merge testnet3

compiler/ast/src/common/identifier.rs

@@ -17,7 +17,7 @@
 use leo_errors::Result;
 use leo_span::{Span, Symbol};
 
-use crate::Node;
+use crate::{simple_node_impl, Node};
 use serde::{
     de::{
         Visitor, {self},
@@ -43,15 +43,7 @@ pub struct Identifier {
     pub span: Span,
 }
 
-impl Node for Identifier {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+simple_node_impl!(Identifier);
 
 impl Identifier {
     /// Constructs a new identifier with `name` and a default span.

compiler/ast/src/expression/binary.rs

@@ -120,12 +120,4 @@ impl fmt::Display for BinaryExpression {
     }
 }
 
-impl Node for BinaryExpression {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(BinaryExpression);

compiler/ast/src/expression/call.rs

@@ -41,12 +41,4 @@ impl fmt::Display for CallExpression {
     }
 }
 
-impl Node for CallExpression {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(CallExpression);

compiler/ast/src/expression/err.rs

@@ -29,12 +29,4 @@ impl fmt::Display for ErrExpression {
     }
 }
 
-impl Node for ErrExpression {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(ErrExpression);

compiler/ast/src/expression/mod.rs

@@ -54,9 +54,9 @@ pub enum Expression {
 }
 
 impl Node for Expression {
-    fn span(&self) -> &Span {
+    fn span(&self) -> Span {
         use Expression::*;
-        match &self {
+        match self {
             Identifier(n) => n.span(),
             Value(n) => n.span(),
             Binary(n) => n.span(),

compiler/ast/src/expression/ternary.rs

@@ -35,12 +35,4 @@ impl fmt::Display for TernaryExpression {
     }
 }
 
-impl Node for TernaryExpression {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(TernaryExpression);

compiler/ast/src/expression/unary.rs

@@ -52,12 +52,4 @@ impl fmt::Display for UnaryExpression {
     }
 }
 
-impl Node for UnaryExpression {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(UnaryExpression);

compiler/ast/src/expression/value.rs

@@ -60,14 +60,14 @@ impl fmt::Display for ValueExpression {
 }
 
 impl Node for ValueExpression {
-    fn span(&self) -> &Span {
+    fn span(&self) -> Span {
         use ValueExpression::*;
         match &self {
-            Address(_, span) | Boolean(_, span) | Field(_, span) | Integer(_, _, span) | String(_, span) => span,
-            Char(character) => &character.span,
+            Address(_, span) | Boolean(_, span) | Field(_, span) | Integer(_, _, span) | String(_, span) => *span,
+            Char(character) => character.span,
             Group(group) => match &**group {
-                GroupValue::Single(_, span) => span,
-                GroupValue::Tuple(tuple) => &tuple.span,
+                GroupValue::Single(_, span) => *span,
+                GroupValue::Tuple(tuple) => tuple.span,
             },
         }
     }

compiler/ast/src/functions/function.rs

@@ -82,12 +82,4 @@ impl fmt::Debug for Function {
     }
 }
 
-impl Node for Function {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(Function);

compiler/ast/src/functions/input/function_input.rs

@@ -87,12 +87,4 @@ impl fmt::Debug for FunctionInputVariable {
     }
 }
 
-impl Node for FunctionInputVariable {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(FunctionInputVariable);

compiler/ast/src/functions/input/input_variable.rs

@@ -70,10 +70,10 @@ impl PartialEq for FunctionInput {
 impl Eq for FunctionInput {}
 
 impl Node for FunctionInput {
-    fn span(&self) -> &Span {
+    fn span(&self) -> Span {
         use FunctionInput::*;
         match self {
-            Variable(variable) => &variable.span,
+            Variable(variable) => variable.span,
         }
     }
 

compiler/ast/src/input/input_value.rs

@@ -38,7 +38,7 @@ impl TryFrom<(Type, Expression)> for InputValue {
                 match (type_, value) {
                     (Type::Address, ValueExpression::Address(value, _)) => Self::Address(value),
                     (Type::Boolean, ValueExpression::Boolean(value, span)) => {
-                        let bool_value = value.parse::<bool>().map_err(|_| ParserError::unexpected_eof(&span))?; // TODO: change error
+                        let bool_value = value.parse::<bool>().map_err(|_| ParserError::unexpected_eof(span))?; // TODO: change error
                         Self::Boolean(bool_value)
                     }
                     (Type::Char, ValueExpression::Char(value)) => Self::Char(value),
@@ -48,7 +48,7 @@ impl TryFrom<(Type, Expression)> for InputValue {
                         if expected == actual {
                             Self::Integer(expected, value)
                         } else {
-                            return Err(InputError::unexpected_type(expected.to_string(), actual, &span).into());
+                            return Err(InputError::unexpected_type(expected.to_string(), actual, span).into());
                         }
                     }
                     (x, y) => {

compiler/ast/src/input/program_input.rs

@@ -35,7 +35,7 @@ impl TryFrom<InputAst> for ProgramInput {
                 sym::registers => &mut registers,
                 _ => {
                     return Err(
-                        InputError::unexpected_section(&["main", "registers"], section.name, &section.span).into(),
+                        InputError::unexpected_section(&["main", "registers"], section.name, section.span).into(),
                     )
                 }
             };

compiler/ast/src/input/program_state.rs

@@ -39,7 +39,7 @@ impl TryFrom<InputAst> for ProgramState {
                 return Err(InputError::unexpected_section(
                     &["state", "record", "state_leaf"],
                     section.name,
-                    &section.span,
+                    section.span,
                 )
                 .into());
             }

compiler/ast/src/node.rs

@@ -21,8 +21,23 @@ pub trait Node:
     std::fmt::Debug + std::fmt::Display + Clone + PartialEq + Eq + serde::Serialize + serde::de::DeserializeOwned
 {
     /// Returns the span of the node.
-    fn span(&self) -> &Span;
+    fn span(&self) -> Span;
 
     /// Sets the span of the node.
     fn set_span(&mut self, span: Span);
 }
+
+#[macro_export]
+macro_rules! simple_node_impl {
+    ($ty:ty) => {
+        impl Node for $ty {
+            fn span(&self) -> Span {
+                self.span
+            }
+
+            fn set_span(&mut self, span: Span) {
+                self.span = span;
+            }
+        }
+    };
+}

compiler/ast/src/passes/reconstructing_director.rs

@@ -206,7 +206,7 @@ impl<R: ReconstructingReducer> ReconstructingDirector<R> {
 
     pub fn reduce_iteration(&mut self, iteration: &IterationStatement) -> Result<IterationStatement> {
         let variable = self.reduce_identifier(&iteration.variable)?;
-        let type_ = self.reduce_type(&iteration.type_, iteration.span())?;
+        let type_ = self.reduce_type(&iteration.type_, &iteration.span())?;
         let start = self.reduce_expression(&iteration.start)?;
         let stop = self.reduce_expression(&iteration.stop)?;
         let block = self.reduce_block(&iteration.block)?;
@@ -227,13 +227,13 @@ impl<R: ReconstructingReducer> ReconstructingDirector<R> {
                 let formatted = ConsoleArgs {
                     string: args.string.clone(),
                     parameters,
-                    span: args.span.clone(),
+                    span: args.span,
                 };
 
                 match &console_function_call.function {
                     ConsoleFunction::Error(_) => ConsoleFunction::Error(formatted),
                     ConsoleFunction::Log(_) => ConsoleFunction::Log(formatted),
-                    _ => return Err(AstError::impossible_console_assert_call(&args.span).into()),
+                    _ => return Err(AstError::impossible_console_assert_call(args.span).into()),
                 }
             }
         };

compiler/ast/src/passes/reconstructing_reducer.rs

@@ -43,7 +43,7 @@ pub trait ReconstructingReducer {
     fn reduce_identifier(&mut self, identifier: &Identifier) -> Result<Identifier> {
         Ok(Identifier {
             name: identifier.name,
-            span: identifier.span.clone(),
+            span: identifier.span,
         })
     }
 
@@ -51,7 +51,7 @@ pub trait ReconstructingReducer {
         Ok(GroupTuple {
             x: group_tuple.x.clone(),
             y: group_tuple.y.clone(),
-            span: group_tuple.span.clone(),
+            span: group_tuple.span,
         })
     }
 
@@ -60,10 +60,7 @@ pub trait ReconstructingReducer {
     }
 
     fn reduce_string(&mut self, string: &[Char], span: &Span) -> Result<Expression> {
-        Ok(Expression::Value(ValueExpression::String(
-            string.to_vec(),
-            span.clone(),
-        )))
+        Ok(Expression::Value(ValueExpression::String(string.to_vec(), *span)))
     }
 
     fn reduce_value(&mut self, _value: &ValueExpression, new: Expression) -> Result<Expression> {
@@ -81,7 +78,7 @@ pub trait ReconstructingReducer {
             left: Box::new(left),
             right: Box::new(right),
             op,
-            span: binary.span.clone(),
+            span: binary.span,
         })
     }
 
@@ -94,7 +91,7 @@ pub trait ReconstructingReducer {
         Ok(UnaryExpression {
             inner: Box::new(inner),
             op,
-            span: unary.span.clone(),
+            span: unary.span,
         })
     }
 
@@ -109,7 +106,7 @@ pub trait ReconstructingReducer {
             condition: Box::new(condition),
             if_true: Box::new(if_true),
             if_false: Box::new(if_false),
-            span: ternary.span.clone(),
+            span: ternary.span,
         })
     }
 
@@ -122,7 +119,7 @@ pub trait ReconstructingReducer {
         Ok(CallExpression {
             function: Box::new(function),
             arguments,
-            span: call.span.clone(),
+            span: call.span,
         })
     }
 
@@ -134,7 +131,7 @@ pub trait ReconstructingReducer {
     fn reduce_return(&mut self, return_statement: &ReturnStatement, expression: Expression) -> Result<ReturnStatement> {
         Ok(ReturnStatement {
             expression,
-            span: return_statement.span.clone(),
+            span: return_statement.span,
         })
     }
 
@@ -142,7 +139,7 @@ pub trait ReconstructingReducer {
         Ok(VariableName {
             mutable: variable_name.mutable,
             identifier,
-            span: variable_name.span.clone(),
+            span: variable_name.span,
         })
     }
 
@@ -158,7 +155,7 @@ pub trait ReconstructingReducer {
             variable_names,
             type_,
             value,
-            span: definition.span.clone(),
+            span: definition.span,
         })
     }
 
@@ -175,7 +172,7 @@ pub trait ReconstructingReducer {
         Ok(Assignee {
             identifier,
             accesses,
-            span: assignee.span.clone(),
+            span: assignee.span,
         })
     }
 
@@ -189,7 +186,7 @@ pub trait ReconstructingReducer {
             operation: assign.operation,
             assignee,
             value,
-            span: assign.span.clone(),
+            span: assign.span,
         })
     }
 
@@ -204,7 +201,7 @@ pub trait ReconstructingReducer {
             condition,
             block,
             next: statement.map(|statement| Box::new(statement)),
-            span: conditional.span.clone(),
+            span: conditional.span,
         })
     }
 
@@ -224,14 +221,14 @@ pub trait ReconstructingReducer {
             stop,
             inclusive: iteration.inclusive,
             block,
-            span: iteration.span.clone(),
+            span: iteration.span,
         })
     }
 
     fn reduce_console(&mut self, console: &ConsoleStatement, function: ConsoleFunction) -> Result<ConsoleStatement> {
         Ok(ConsoleStatement {
             function,
-            span: console.span.clone(),
+            span: console.span,
         })
     }
 
@@ -242,14 +239,14 @@ pub trait ReconstructingReducer {
     ) -> Result<ExpressionStatement> {
         Ok(ExpressionStatement {
             expression,
-            span: expression_statement.span.clone(),
+            span: expression_statement.span,
         })
     }
 
     fn reduce_block(&mut self, block: &Block, statements: Vec<Statement>) -> Result<Block> {
         Ok(Block {
             statements,
-            span: block.span.clone(),
+            span: block.span,
         })
     }
 
@@ -278,7 +275,7 @@ pub trait ReconstructingReducer {
             identifier,
             variable.mode(),
             type_,
-            variable.span.clone(),
+            variable.span,
         ))
     }
 
@@ -305,7 +302,7 @@ pub trait ReconstructingReducer {
             output,
             block,
             core_mapping: function.core_mapping.clone(),
-            span: function.span.clone(),
+            span: function.span,
         })
     }
 }

compiler/ast/src/statements/assign/mod.rs

@@ -100,12 +100,4 @@ impl fmt::Display for AssignStatement {
     }
 }
 
-impl Node for AssignStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(AssignStatement);

compiler/ast/src/statements/block.rs

@@ -43,12 +43,4 @@ impl fmt::Display for Block {
     }
 }
 
-impl Node for Block {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(Block);

compiler/ast/src/statements/conditional.rs

@@ -43,12 +43,4 @@ impl fmt::Display for ConditionalStatement {
     }
 }
 
-impl Node for ConditionalStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(ConditionalStatement);

compiler/ast/src/statements/console/console_args.rs

@@ -46,12 +46,4 @@ impl fmt::Display for ConsoleArgs {
     }
 }
 
-impl Node for ConsoleArgs {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(ConsoleArgs);

compiler/ast/src/statements/console/console_function.rs

@@ -45,10 +45,10 @@ impl fmt::Display for ConsoleFunction {
 }
 
 impl Node for ConsoleFunction {
-    fn span(&self) -> &Span {
+    fn span(&self) -> Span {
         match self {
             ConsoleFunction::Assert(assert) => assert.span(),
-            ConsoleFunction::Error(formatted) | ConsoleFunction::Log(formatted) => &formatted.span,
+            ConsoleFunction::Error(formatted) | ConsoleFunction::Log(formatted) => formatted.span,
         }
     }
 

compiler/ast/src/statements/console/console_statement.rs

@@ -41,12 +41,4 @@ impl fmt::Debug for ConsoleStatement {
     }
 }
 
-impl Node for ConsoleStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(ConsoleStatement);

compiler/ast/src/statements/definition/mod.rs

@@ -64,12 +64,4 @@ impl fmt::Display for DefinitionStatement {
     }
 }
 
-impl Node for DefinitionStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(DefinitionStatement);

compiler/ast/src/statements/definition/variable_name.rs

@@ -37,12 +37,4 @@ impl fmt::Display for VariableName {
     }
 }
 
-impl Node for VariableName {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(VariableName);

compiler/ast/src/statements/expression.rs

@@ -35,12 +35,4 @@ impl fmt::Display for ExpressionStatement {
     }
 }
 
-impl Node for ExpressionStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(ExpressionStatement);

compiler/ast/src/statements/iteration.rs

@@ -51,12 +51,4 @@ impl fmt::Display for IterationStatement {
     }
 }
 
-impl Node for IterationStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(IterationStatement);

compiler/ast/src/statements/return_statement.rs

@@ -35,12 +35,4 @@ impl fmt::Display for ReturnStatement {
     }
 }
 
-impl Node for ReturnStatement {
-    fn span(&self) -> &Span {
-        &self.span
-    }
-
-    fn set_span(&mut self, span: Span) {
-        self.span = span;
-    }
-}
+crate::simple_node_impl!(ReturnStatement);

compiler/ast/src/statements/statement.rs

@@ -59,9 +59,9 @@ impl fmt::Display for Statement {
 }
 
 impl Node for Statement {
-    fn span(&self) -> &Span {
+    fn span(&self) -> Span {
         use Statement::*;
-        match &self {
+        match self {
             Return(n) => n.span(),
             Definition(n) => n.span(),
             Assign(n) => n.span(),

compiler/compiler/Cargo.toml

@@ -37,7 +37,7 @@ version = "1.5.3"
 [dependencies.sha2]
 version = "0.10"
 
-[dev-dependencies.leo-span]
+[dependencies.leo-span]
 path = "../../leo/span"
 version = "1.5.3"
 

compiler/compiler/src/lib.rs

@@ -31,6 +31,8 @@ use leo_errors::emitter::Handler;
 use leo_errors::{CompilerError, Result};
 pub use leo_passes::SymbolTable;
 use leo_passes::*;
+use leo_span::source_map::FileName;
+use leo_span::symbol::with_session_globals;
 
 use sha2::{Digest, Sha256};
 use std::fs;
@@ -77,13 +79,12 @@ impl<'a> Compiler<'a> {
     }
 
     // Parses and stores a program file content from a string, constructs a syntax tree, and generates a program.
-    pub fn parse_program_from_string(&mut self, program_string: &str) -> Result<()> {
+    pub fn parse_program_from_string(&mut self, program_string: &str, name: FileName) -> Result<()> {
+        // Register the source (`program_string`) in the source map.
+        let prg_sf = with_session_globals(|s| s.source_map.new_source(program_string, name));
+
         // Use the parser to construct the abstract syntax tree (ast).
-        let ast: leo_ast::Ast = leo_parser::parse_ast(
-            self.handler,
-            self.main_file_path.to_str().unwrap_or_default(),
-            program_string,
-        )?;
+        let ast: leo_ast::Ast = leo_parser::parse_ast(self.handler, &prg_sf.src, prg_sf.start_pos)?;
         // Write the AST snapshot post parsing.
         ast.to_json_file_without_keys(self.output_directory.clone(), "initial_ast.json", &["span"])?;
 
@@ -96,31 +97,24 @@ impl<'a> Compiler<'a> {
     pub fn parse_program(&mut self) -> Result<()> {
         // Load the program file.
         let program_string = fs::read_to_string(&self.main_file_path)
-            .map_err(|e| CompilerError::file_read_error(self.main_file_path.clone(), e))?;
+            .map_err(|e| CompilerError::file_read_error(&self.main_file_path, e))?;
 
-        self.parse_program_from_string(&program_string)
-    }
-
-    /// Parses and stores the input file, constructs a syntax tree, and generates a program input.
-    pub fn parse_input_from_string(&mut self, input_file_path: PathBuf, input_string: &str) -> Result<()> {
-        let input_ast =
-            leo_parser::parse_input(self.handler, input_file_path.to_str().unwrap_or_default(), input_string)?;
-        input_ast.to_json_file_without_keys(self.output_directory.clone(), "inital_input_ast.json", &["span"])?;
-
-        self.input_ast = Some(input_ast);
-        Ok(())
+        self.parse_program_from_string(&program_string, FileName::Real(self.main_file_path.clone()))
     }
 
     /// Parses and stores the input file, constructs a syntax tree, and generates a program input.
     pub fn parse_input(&mut self, input_file_path: PathBuf) -> Result<()> {
-        // Load the input file if it exists.
         if input_file_path.exists() {
-            let input_string = fs::read_to_string(&input_file_path)
-                .map_err(|e| CompilerError::file_read_error(input_file_path.clone(), e))?;
+            // Load the input file into the source map.
+            let input_sf = with_session_globals(|s| s.source_map.load_file(&input_file_path))
+                .map_err(|e| CompilerError::file_read_error(&input_file_path, e))?;
 
-            self.parse_input_from_string(input_file_path, &input_string)?;
+            // Parse and serialize it.
+            let input_ast = leo_parser::parse_input(self.handler, &input_sf.src, input_sf.start_pos)?;
+            input_ast.to_json_file_without_keys(self.output_directory.clone(), "inital_input_ast.json", &["span"])?;
+
+            self.input_ast = Some(input_ast);
         }
-
         Ok(())
     }
 

compiler/compiler/src/test.rs

@@ -28,7 +28,7 @@ use leo_errors::{
     LeoError, LeoWarning,
 };
 use leo_passes::SymbolTable;
-use leo_span::symbol::create_session_if_not_set_then;
+use leo_span::{source_map::FileName, symbol::create_session_if_not_set_then};
 use leo_test_framework::{
     runner::{Namespace, ParseType, Runner},
     Test,
@@ -48,8 +48,9 @@ fn parse_program<'a>(
     program_string: &str,
     cwd: Option<PathBuf>,
 ) -> Result<Compiler<'a>, LeoError> {
-    let mut compiler = new_compiler(handler, cwd.unwrap_or_else(|| "compiler-test".into()));
-    compiler.parse_program_from_string(program_string)?;
+    let mut compiler = new_compiler(handler, cwd.clone().unwrap_or_else(|| "compiler-test".into()));
+    let name = cwd.map_or_else(|| FileName::Custom("compiler-test".into()), FileName::Real);
+    compiler.parse_program_from_string(program_string, name)?;
 
     Ok(compiler)
 }

compiler/parser/benches/leo_ast.rs

@@ -16,14 +16,15 @@
 
 use leo_ast::Ast;
 use leo_errors::emitter::Handler;
-use leo_span::symbol::create_session_if_not_set_then;
+use leo_span::{source_map::FileName, symbol::create_session_if_not_set_then};
 
 use criterion::{criterion_group, criterion_main, Criterion};
 use std::time::Duration;
 
 fn parse_ast(path: &str, input: &str) -> Ast {
-    create_session_if_not_set_then(|_| {
-        leo_parser::parse_ast(&Handler::default(), path, input).expect("failed to parse benchmark")
+    create_session_if_not_set_then(|s| {
+        let sf = s.source_map.new_source(input, FileName::Custom(path.into()));
+        leo_parser::parse_ast(&Handler::default(), &sf.src, sf.start_pos).expect("failed to parse benchmark")
     })
 }
 
@@ -34,6 +35,8 @@ macro_rules! bench {
                 concat!("./", $file_name, ".leo"),
                 include_str!(concat!("./", $file_name, ".leo"),),
             );
+            // TODO(Centril): This benchmark seems like it actually does nothing
+            // but take a reference to `&ast`, which should be optimized out?
             c.bench_function(concat!("Ast::", $file_name), |b| b.iter(|| &ast));
         }
     };

compiler/parser/examples/input_parser.rs

@@ -44,11 +44,14 @@ struct Opt {
 
 fn main() -> Result<(), String> {
     let opt = Opt::from_args();
-    let input_string = fs::read_to_string(&opt.input_path).expect("failed to open an input file");
-    let input_tree = create_session_if_not_set_then(|_| {
+    let input_tree = create_session_if_not_set_then(|s| {
+        let input_string = s
+            .source_map
+            .load_file(&opt.input_path)
+            .expect("failed to open an input file");
+
         Handler::with(|handler| {
-            let input =
-                leo_parser::parse_program_inputs(handler, input_string.clone(), opt.input_path.to_str().unwrap())?;
+            let input = leo_parser::parse_program_inputs(handler, &input_string.src, input_string.start_pos)?;
             input.to_json_string()
         })
         .map_err(|e| e.to_string())

compiler/parser/examples/parser.rs

@@ -42,12 +42,12 @@ struct Opt {
 
 fn main() -> Result<(), String> {
     let opt = Opt::from_args();
-    let code = fs::read_to_string(&opt.input_path).expect("failed to open file");
-
     // Parses the Leo file constructing an ast which is then serialized.
-    let serialized_leo_tree = create_session_if_not_set_then(|_| {
+    let serialized_leo_tree = create_session_if_not_set_then(|s| {
+        let code = s.source_map.load_file(&opt.input_path).expect("failed to open file");
+
         Handler::with(|h| {
-            let ast = leo_parser::parse_ast(h, opt.input_path.to_str().unwrap(), &code)?;
+            let ast = leo_parser::parse_ast(h, &code.src, code.start_pos)?;
             let json = Ast::to_json_string(&ast)?;
             println!("{}", json);
             Ok(json)

compiler/parser/src/lib.rs

@@ -23,6 +23,7 @@
 #![doc = include_str!("../README.md")]
 
 pub(crate) mod tokenizer;
+use leo_span::span::BytePos;
 pub use tokenizer::KEYWORD_TOKENS;
 pub(crate) use tokenizer::*;
 
@@ -37,18 +38,13 @@ use leo_errors::Result;
 mod test;
 
 /// Creates a new AST from a given file path and source code text.
-pub fn parse_ast<T: AsRef<str>, Y: AsRef<str>>(handler: &Handler, path: T, source: Y) -> Result<Ast> {
-    Ok(Ast::new(parser::parse(handler, path.as_ref(), source.as_ref())?))
+pub fn parse_ast(handler: &Handler, source: &str, start_pos: BytePos) -> Result<Ast> {
+    Ok(Ast::new(parser::parse(handler, source, start_pos)?))
 }
 
 /// Parses program inputs from from the input file path and state file path
-pub fn parse_program_inputs<T: AsRef<str>, Y: AsRef<str>>(
-    handler: &Handler,
-    input_string: T,
-    input_path: Y,
-) -> Result<Input> {
-    let program_input: ProgramInput =
-        parser::parse_input(handler, input_path.as_ref(), input_string.as_ref())?.try_into()?;
+pub fn parse_program_inputs(handler: &Handler, input_string: &str, start_pos: BytePos) -> Result<Input> {
+    let program_input: ProgramInput = parser::parse_input(handler, input_string, start_pos)?.try_into()?;
 
     Ok(Input {
         program_input,

compiler/parser/src/parser/context.rs

@@ -39,11 +39,14 @@ pub struct ParserContext<'a> {
     pub(crate) prev_token: SpannedToken,
     /// true if parsing an expression for if and loop statements -- means circuit inits are not legal
     pub(crate) disallow_circuit_construction: bool,
-    /// HACK(Centril): Place to store a dummy EOF.
-    /// Exists to appease borrow checker for now.
-    dummy_eof: SpannedToken,
 }
 
+/// Dummy span used to appease borrow checker.
+const DUMMY_EOF: SpannedToken = SpannedToken {
+    token: Token::Eof,
+    span: Span::dummy(),
+};
+
 impl<'a> ParserContext<'a> {
     /// Returns a new [`ParserContext`] type given a vector of tokens.
     pub fn new(handler: &'a Handler, mut tokens: Vec<SpannedToken>) -> Self {
@@ -53,14 +56,9 @@ impl<'a> ParserContext<'a> {
         tokens.reverse();
 
         let token = SpannedToken::dummy();
-        let dummy_eof = SpannedToken {
-            token: Token::Eof,
-            span: token.span.clone(),
-        };
         let mut p = Self {
             handler,
             disallow_circuit_construction: false,
-            dummy_eof,
             prev_token: token.clone(),
             token,
             tokens,
@@ -80,9 +78,9 @@ impl<'a> ParserContext<'a> {
         }
 
         // Extract next token, or `Eof` if there was none.
-        let next_token = self.tokens.pop().unwrap_or_else(|| SpannedToken {
+        let next_token = self.tokens.pop().unwrap_or(SpannedToken {
             token: Token::Eof,
-            span: self.token.span.clone(),
+            span: self.token.span,
         });
 
         // Set the new token.
@@ -108,11 +106,11 @@ impl<'a> ParserContext<'a> {
         }
 
         let idx = match self.tokens.len().checked_sub(dist) {
-            None => return looker(&self.dummy_eof),
+            None => return looker(&DUMMY_EOF),
             Some(idx) => idx,
         };
 
-        looker(self.tokens.get(idx).unwrap_or(&self.dummy_eof))
+        looker(self.tokens.get(idx).unwrap_or(&DUMMY_EOF))
     }
 
     /// Emit the error `err`.
@@ -132,7 +130,7 @@ impl<'a> ParserContext<'a> {
 
     /// At the previous token, return and make an identifier with `name`.
     fn mk_ident_prev(&self, name: Symbol) -> Identifier {
-        let span = self.prev_token.span.clone();
+        let span = self.prev_token.span;
         Identifier { name, span }
     }
 
@@ -161,7 +159,7 @@ impl<'a> ParserContext<'a> {
     /// Expects an [`Identifier`], or errors.
     pub fn expect_ident(&mut self) -> Result<Identifier> {
         self.eat_identifier()
-            .ok_or_else(|| ParserError::unexpected_str(&self.token.token, "ident", &self.token.span).into())
+            .ok_or_else(|| ParserError::unexpected_str(&self.token.token, "ident", self.token.span).into())
     }
 
     /// Returns a reference to the next token if it is a [`GroupCoordinate`], or [None] if
@@ -170,11 +168,11 @@ impl<'a> ParserContext<'a> {
         let (advanced, gc) = self.look_ahead(*dist, |t0| match &t0.token {
             Token::Add => Some((1, GroupCoordinate::SignHigh)),
             Token::Minus => self.look_ahead(*dist + 1, |t1| match &t1.token {
-                Token::Int(value) => Some((2, GroupCoordinate::Number(format!("-{}", value), t1.span.clone()))),
+                Token::Int(value) => Some((2, GroupCoordinate::Number(format!("-{}", value), t1.span))),
                 _ => Some((1, GroupCoordinate::SignLow)),
             }),
             Token::Underscore => Some((1, GroupCoordinate::Inferred)),
-            Token::Int(value) => Some((1, GroupCoordinate::Number(value.clone(), t0.span.clone()))),
+            Token::Int(value) => Some((1, GroupCoordinate::Number(value.clone(), t0.span))),
             _ => None,
         })?;
         *dist += advanced;
@@ -200,7 +198,7 @@ impl<'a> ParserContext<'a> {
         let mut dist = 1; // 0th is `(` so 1st is first gc's start.
         let first_gc = self.peek_group_coordinate(&mut dist)?;
 
-        let check_ahead = |d, token: &_| self.look_ahead(d, |t| (&t.token == token).then(|| t.span.clone()));
+        let check_ahead = |d, token: &_| self.look_ahead(d, |t| (&t.token == token).then(|| t.span));
 
         // Peek at `,`.
         check_ahead(dist, &Token::Comma)?;
@@ -228,7 +226,7 @@ impl<'a> ParserContext<'a> {
             self.bump();
         }
 
-        if let Err(e) = assert_no_whitespace(&right_paren_span, &end_span, &format!("({},{})", gt.x, gt.y), "group") {
+        if let Err(e) = assert_no_whitespace(right_paren_span, end_span, &format!("({},{})", gt.x, gt.y), "group") {
             return Some(Err(e));
         }
 
@@ -252,13 +250,13 @@ impl<'a> ParserContext<'a> {
 
     /// Returns an unexpected error at the current token.
     fn unexpected<T>(&self, expected: impl Display) -> Result<T> {
-        Err(ParserError::unexpected(&self.token.token, expected, &self.token.span).into())
+        Err(ParserError::unexpected(&self.token.token, expected, self.token.span).into())
     }
 
     /// Eats the expected `token`, or errors.
     pub fn expect(&mut self, token: &Token) -> Result<Span> {
         if self.eat(token) {
-            Ok(self.prev_token.span.clone())
+            Ok(self.prev_token.span)
         } else {
             self.unexpected(token)
         }
@@ -267,7 +265,7 @@ impl<'a> ParserContext<'a> {
     /// Eats one of the expected `tokens`, or errors.
     pub fn expect_any(&mut self, tokens: &[Token]) -> Result<Span> {
         if self.eat_any(tokens) {
-            Ok(self.prev_token.span.clone())
+            Ok(self.prev_token.span)
         } else {
             self.unexpected(tokens.iter().map(|x| format!("'{}'", x)).collect::<Vec<_>>().join(", "))
         }

compiler/parser/src/parser/expression.rs

@@ -205,12 +205,12 @@ impl ParserContext<'_> {
                 Token::Minus => UnaryOperation::Negate,
                 _ => unreachable!("parse_unary_expression_ shouldn't produce this"),
             };
-            ops.push((operation, self.prev_token.span.clone()));
+            ops.push((operation, self.prev_token.span));
         }
         let mut inner = self.parse_postfix_expression()?;
         for (op, op_span) in ops.into_iter().rev() {
             inner = Expression::Unary(UnaryExpression {
-                span: &op_span + inner.span(),
+                span: op_span + inner.span(),
                 op,
                 inner: Box::new(inner),
             });
@@ -230,7 +230,7 @@ impl ParserContext<'_> {
         loop {
             if self.eat(&Token::Dot) {
                 let curr = &self.token;
-                return Err(ParserError::unexpected_str(&curr.token, "int or ident", &curr.span).into());
+                return Err(ParserError::unexpected_str(&curr.token, "int or ident", curr.span).into());
             }
 
             if !self.check(&Token::LeftParen) {
@@ -239,7 +239,7 @@ impl ParserContext<'_> {
 
             let (arguments, _, span) = self.parse_paren_comma_list(|p| p.parse_expression().map(Some))?;
             expr = Expression::Call(CallExpression {
-                span: expr.span() + &span,
+                span: expr.span() + span,
                 function: Box::new(expr),
                 arguments,
             });
@@ -261,7 +261,7 @@ impl ParserContext<'_> {
         if !trailing && tuple.len() == 1 {
             Ok(tuple.remove(0))
         } else {
-            Err(ParserError::unexpected("A tuple expression.", "A valid expression.", &span).into())
+            Err(ParserError::unexpected("A tuple expression.", "A valid expression.", span).into())
         }
     }
 
@@ -282,9 +282,9 @@ impl ParserContext<'_> {
 
         Ok(match token {
             Token::Int(value) => {
-                let suffix_span = self.token.span.clone();
-                let full_span = &span + &suffix_span;
-                let assert_no_whitespace = |x| assert_no_whitespace(&span, &suffix_span, &value, x);
+                let suffix_span = self.token.span;
+                let full_span = span + suffix_span;
+                let assert_no_whitespace = |x| assert_no_whitespace(span, suffix_span, &value, x);
                 match self.eat_any(INT_TYPES).then(|| &self.prev_token.token) {
                     // Literal followed by `field`, e.g., `42field`.
                     Some(Token::Field) => {
@@ -302,7 +302,7 @@ impl ParserContext<'_> {
                         let int_ty = Self::token_to_int_type(suffix).expect("unknown int type token");
                         Expression::Value(ValueExpression::Integer(int_ty, value, full_span))
                     }
-                    None => return Err(ParserError::implicit_values_not_allowed(value, &span).into()),
+                    None => return Err(ParserError::implicit_values_not_allowed(value, span).into()),
                 }
             }
             Token::True => Expression::Value(ValueExpression::Boolean("true".into(), span)),
@@ -323,7 +323,7 @@ impl ParserContext<'_> {
                 span,
             }),
             token => {
-                return Err(ParserError::unexpected_str(token, "expression", &span).into());
+                return Err(ParserError::unexpected_str(token, "expression", span).into());
             }
         })
     }

compiler/parser/src/parser/file.rs

@@ -26,7 +26,7 @@ impl ParserContext<'_> {
 
         while self.has_next() {
             match &self.token.token {
-                Token::Ident(sym::test) => return Err(ParserError::test_function(&self.token.span).into()),
+                Token::Ident(sym::test) => return Err(ParserError::test_function(self.token.span).into()),
                 // Const functions share the first token with the global Const.
                 Token::Const if self.peek_is_function() => {
                     let (id, function) = self.parse_function_declaration()?;
@@ -54,17 +54,17 @@ impl ParserContext<'_> {
                 .map(|x| format!("'{}'", x))
                 .collect::<Vec<_>>()
                 .join(", "),
-            &token.span,
+            token.span,
         )
     }
 
     /// Returns a [`ParamMode`] AST node if the next tokens represent a function parameter mode.
     pub fn parse_function_parameter_mode(&mut self) -> Result<ParamMode> {
-        let public = self.eat(&Token::Public).then(|| self.prev_token.span.clone());
-        let constant = self.eat(&Token::Constant).then(|| self.prev_token.span.clone());
-        let const_ = self.eat(&Token::Const).then(|| self.prev_token.span.clone());
+        let public = self.eat(&Token::Public).then(|| self.prev_token.span);
+        let constant = self.eat(&Token::Constant).then(|| self.prev_token.span);
+        let const_ = self.eat(&Token::Const).then(|| self.prev_token.span);
 
-        if let Some(span) = &const_ {
+        if let Some(span) = const_ {
             self.emit_warning(ParserWarning::const_parameter_or_input(span));
         }
 
@@ -74,10 +74,10 @@ impl ParserContext<'_> {
             (None, None, None) => Ok(ParamMode::Private),
             (Some(_), None, None) => Ok(ParamMode::Public),
             (Some(m1), Some(m2), None) | (Some(m1), None, Some(m2)) | (None, Some(m1), Some(m2)) => {
-                Err(ParserError::inputs_multiple_variable_types_specified(&(m1 + m2)).into())
+                Err(ParserError::inputs_multiple_variable_types_specified(m1 + m2).into())
             }
             (Some(m1), Some(m2), Some(m3)) => {
-                Err(ParserError::inputs_multiple_variable_types_specified(&(m1 + m2 + m3)).into())
+                Err(ParserError::inputs_multiple_variable_types_specified(m1 + m2 + m3).into())
             }
         }
     }
@@ -90,7 +90,7 @@ impl ParserContext<'_> {
         let name = self.expect_ident()?;
 
         if let Some(mutable) = &mutable {
-            self.emit_err(ParserError::mut_function_input(&(&mutable.span + &name.span)));
+            self.emit_err(ParserError::mut_function_input(mutable.span + name.span));
         }
 
         self.expect(&Token::Colon)?;
@@ -126,7 +126,7 @@ impl ParserContext<'_> {
                 identifier: name,
                 input: inputs,
                 output,
-                span: start + block.span.clone(),
+                span: start + block.span,
                 block,
                 core_mapping: <_>::default(),
             },

compiler/parser/src/parser/input.rs

@@ -27,7 +27,7 @@ impl ParserContext<'_> {
             if self.check(&Token::LeftSquare) {
                 sections.push(self.parse_section()?);
             } else {
-                return Err(ParserError::unexpected_token(self.token.token.clone(), &self.token.span).into());
+                return Err(ParserError::unexpected_token(self.token.token.clone(), self.token.span).into());
             }
         }
 

compiler/parser/src/parser/mod.rs

@@ -27,6 +27,7 @@ use leo_errors::{ParserError, Result};
 use leo_span::Span;
 
 use indexmap::IndexMap;
+use leo_span::span::BytePos;
 use std::unreachable;
 
 mod context;
@@ -38,27 +39,25 @@ pub mod input;
 pub mod statement;
 pub mod type_;
 
-pub(crate) fn assert_no_whitespace(left_span: &Span, right_span: &Span, left: &str, right: &str) -> Result<()> {
-    if left_span.col_stop != right_span.col_start {
-        let mut error_span = left_span + right_span;
-        error_span.col_start = left_span.col_stop - 1;
-        error_span.col_stop = right_span.col_start - 1;
-        return Err(ParserError::unexpected_whitespace(left, right, &error_span).into());
+pub(crate) fn assert_no_whitespace(left_span: Span, right_span: Span, left: &str, right: &str) -> Result<()> {
+    if left_span.hi != right_span.lo {
+        let error_span = Span::new(left_span.hi, right_span.lo); // The span between them.
+        return Err(ParserError::unexpected_whitespace(left, right, error_span).into());
     }
 
     Ok(())
 }
 
 /// Creates a new program from a given file path and source code text.
-pub fn parse(handler: &Handler, path: &str, source: &str) -> Result<Program> {
-    let mut tokens = ParserContext::new(handler, crate::tokenize(path, source)?);
+pub fn parse(handler: &Handler, source: &str, start_pos: BytePos) -> Result<Program> {
+    let mut tokens = ParserContext::new(handler, crate::tokenize(source, start_pos)?);
 
     tokens.parse_program()
 }
 
 /// Parses an input file at the given file `path` and `source` code text.
-pub fn parse_input<T: AsRef<str>, Y: AsRef<str>>(handler: &Handler, path: T, source: Y) -> Result<InputAst> {
-    let mut tokens = ParserContext::new(handler, crate::tokenize(path.as_ref(), source.as_ref())?);
+pub fn parse_input(handler: &Handler, source: &str, start_pos: BytePos) -> Result<InputAst> {
+    let mut tokens = ParserContext::new(handler, crate::tokenize(source, start_pos)?);
 
     tokens.parse_input()
 }

compiler/parser/src/parser/statement.rs

@@ -27,19 +27,16 @@ impl ParserContext<'_> {
     pub fn construct_assignee_access(expr: Expression, _accesses: &mut [AssigneeAccess]) -> Result<Identifier> {
         match expr {
             Expression::Identifier(id) => Ok(id),
-            _ => return Err(ParserError::invalid_assignment_target(expr.span()).into()),
+            _ => Err(ParserError::invalid_assignment_target(expr.span()).into()),
         }
     }
 
     /// Returns an [`Assignee`] AST node from the given [`Expression`] AST node with accesses.
     pub fn construct_assignee(expr: Expression) -> Result<Assignee> {
-        let expr_span = expr.span().clone();
         let mut accesses = Vec::new();
-        let identifier = Self::construct_assignee_access(expr, &mut accesses)?;
-
         Ok(Assignee {
-            span: expr_span,
-            identifier,
+            span: expr.span(),
+            identifier: Self::construct_assignee_access(expr, &mut accesses)?,
             accesses,
         })
     }
@@ -66,7 +63,7 @@ impl ParserContext<'_> {
             let assignee = Self::construct_assignee(expr)?;
             self.expect(&Token::Semicolon)?;
             Ok(Statement::Assign(Box::new(AssignStatement {
-                span: &assignee.span + value.span(),
+                span: assignee.span + value.span(),
                 assignee,
                 // Currently only `=` so this is alright.
                 operation: AssignOperation::Assign,
@@ -75,7 +72,7 @@ impl ParserContext<'_> {
         } else {
             self.expect(&Token::Semicolon)?;
             Ok(Statement::Expression(ExpressionStatement {
-                span: expr.span().clone(),
+                span: expr.span(),
                 expression: expr,
             }))
         }
@@ -89,7 +86,7 @@ impl ParserContext<'_> {
         loop {
             if self.eat(&Token::RightCurly) {
                 return Ok(Block {
-                    span: &start + &self.prev_token.span,
+                    span: start + self.prev_token.span,
                     statements,
                 });
             }
@@ -103,7 +100,7 @@ impl ParserContext<'_> {
         let start = self.expect(&Token::Return)?;
         let expression = self.parse_expression()?;
         self.expect(&Token::Semicolon)?;
-        let span = &start + expression.span();
+        let span = start + expression.span();
         Ok(ReturnStatement { span, expression })
     }
 
@@ -125,7 +122,7 @@ impl ParserContext<'_> {
         };
 
         Ok(ConditionalStatement {
-            span: &start + next.as_ref().map(|x| x.span()).unwrap_or(&body.span),
+            span: start + next.as_ref().map(|x| x.span()).unwrap_or(body.span),
             condition: expr,
             block: body,
             next,
@@ -151,7 +148,7 @@ impl ParserContext<'_> {
         let block = self.parse_block()?;
 
         Ok(IterationStatement {
-            span: start_span + block.span.clone(),
+            span: start_span + block.span,
             variable: ident,
             type_: type_.0,
             start,
@@ -171,7 +168,7 @@ impl ParserContext<'_> {
                 string = Some(match token {
                     Token::StringLit(chars) => chars,
                     _ => {
-                        p.emit_err(ParserError::unexpected_str(token, "formatted string", &span));
+                        p.emit_err(ParserError::unexpected_str(token, "formatted string", span));
                         Vec::new()
                     }
                 });
@@ -207,7 +204,7 @@ impl ParserContext<'_> {
                 self.emit_err(ParserError::unexpected_ident(
                     x,
                     &["assert", "error", "log"],
-                    &function.span,
+                    function.span,
                 ));
                 ConsoleFunction::Log(self.parse_console_args()?)
             }
@@ -215,21 +212,21 @@ impl ParserContext<'_> {
         self.expect(&Token::Semicolon)?;
 
         Ok(ConsoleStatement {
-            span: &keyword + function.span(),
+            span: keyword + function.span(),
             function,
         })
     }
 
     /// Returns a [`VariableName`] AST node if the next tokens represent a variable name with
     /// valid keywords.
-    pub fn parse_variable_name(&mut self, decl_ty: Declare, span: &Span) -> Result<VariableName> {
+    pub fn parse_variable_name(&mut self, decl_ty: Declare, span: Span) -> Result<VariableName> {
         if self.eat(&Token::Mut) {
-            self.emit_err(ParserError::let_mut_statement(&(&self.prev_token.span + span)));
+            self.emit_err(ParserError::let_mut_statement(self.prev_token.span + span));
         }
 
         let name = self.expect_ident()?;
         Ok(VariableName {
-            span: name.span.clone(),
+            span: name.span,
             mutable: matches!(decl_ty, Declare::Let),
             identifier: name,
         })
@@ -238,7 +235,7 @@ impl ParserContext<'_> {
     /// Returns a [`DefinitionStatement`] AST node if the next tokens represent a definition statement.
     pub fn parse_definition_statement(&mut self) -> Result<DefinitionStatement> {
         self.expect_any(&[Token::Let, Token::Const])?;
-        let decl_span = self.prev_token.span.clone();
+        let decl_span = self.prev_token.span;
         let decl_type = match &self.prev_token.token {
             Token::Let => Declare::Let,
             Token::Const => Declare::Const,
@@ -247,7 +244,7 @@ impl ParserContext<'_> {
         // Parse variable names.
         let variable_names = if self.peek_is_left_par() {
             let vars = self
-                .parse_paren_comma_list(|p| p.parse_variable_name(decl_type, &decl_span).map(Some))
+                .parse_paren_comma_list(|p| p.parse_variable_name(decl_type, decl_span).map(Some))
                 .map(|(vars, ..)| vars)?;
 
             if vars.len() == 1 {
@@ -256,7 +253,7 @@ impl ParserContext<'_> {
 
             vars
         } else {
-            vec![self.parse_variable_name(decl_type, &decl_span)?]
+            vec![self.parse_variable_name(decl_type, decl_span)?]
         };
 
         self.expect(&Token::Colon)?;
@@ -267,7 +264,7 @@ impl ParserContext<'_> {
         self.expect(&Token::Semicolon)?;
 
         Ok(DefinitionStatement {
-            span: &decl_span + expr.span(),
+            span: decl_span + expr.span(),
             declaration_type: decl_type,
             variable_names,
             type_: type_.0,

compiler/parser/src/test.rs

@@ -17,7 +17,11 @@
 use crate::{tokenizer, ParserContext, SpannedToken};
 use leo_ast::{Expression, ExpressionStatement, Statement, ValueExpression};
 use leo_errors::{emitter::Handler, LeoError};
-use leo_span::{symbol::create_session_if_not_set_then, Span};
+use leo_span::{
+    source_map::FileName,
+    symbol::{create_session_if_not_set_then, SessionGlobals},
+    Span,
+};
 use leo_test_framework::{
     runner::{Namespace, ParseType, Runner},
     Test,
@@ -34,9 +38,8 @@ impl Namespace for TokenNamespace {
     }
 
     fn run_test(&self, test: Test) -> Result<Value, String> {
-        create_session_if_not_set_then(|_| {
-            tokenizer::tokenize("test", &test.content)
-                .map(|tokens| {
+        create_session_if_not_set_then(|s| {
+            tokenize(test, s).map(|tokens| {
                 Value::String(
                     tokens
                         .into_iter()
@@ -45,7 +48,6 @@ impl Namespace for TokenNamespace {
                         .join(","),
                 )
             })
-                .map_err(|x| x.to_string())
         })
     }
 }
@@ -76,8 +78,9 @@ fn with_handler<T>(
     Ok(parsed)
 }
 
-fn tokenize(test: Test) -> Result<Vec<SpannedToken>, String> {
-    tokenizer::tokenize("test", &test.content).map_err(|x| x.to_string())
+fn tokenize(test: Test, s: &SessionGlobals) -> Result<Vec<SpannedToken>, String> {
+    let sf = s.source_map.new_source(&test.content, FileName::Custom("test".into()));
+    tokenizer::tokenize(&sf.src, sf.start_pos).map_err(|x| x.to_string())
 }
 
 fn all_are_comments(tokens: &[SpannedToken]) -> bool {
@@ -98,8 +101,8 @@ impl Namespace for ParseExpressionNamespace {
     }
 
     fn run_test(&self, test: Test) -> Result<Value, String> {
-        create_session_if_not_set_then(|_| {
-            let tokenizer = tokenize(test)?;
+        create_session_if_not_set_then(|s| {
+            let tokenizer = tokenize(test, s)?;
             if all_are_comments(&tokenizer) {
                 return Ok(yaml_or_fail(""));
             }
@@ -116,8 +119,8 @@ impl Namespace for ParseStatementNamespace {
     }
 
     fn run_test(&self, test: Test) -> Result<Value, String> {
-        create_session_if_not_set_then(|_| {
-            let tokenizer = tokenize(test)?;
+        create_session_if_not_set_then(|s| {
+            let tokenizer = tokenize(test, s)?;
             if all_are_comments(&tokenizer) {
                 return Ok(yaml_or_fail(Statement::Expression(ExpressionStatement {
                     expression: Expression::Value(ValueExpression::String(Vec::new(), Default::default())),
@@ -137,7 +140,7 @@ impl Namespace for ParseNamespace {
     }
 
     fn run_test(&self, test: Test) -> Result<Value, String> {
-        create_session_if_not_set_then(|_| with_handler(tokenize(test)?, |p| p.parse_program()).map(yaml_or_fail))
+        create_session_if_not_set_then(|s| with_handler(tokenize(test, s)?, |p| p.parse_program()).map(yaml_or_fail))
     }
 }
 
@@ -193,8 +196,8 @@ impl Namespace for SerializeNamespace {
     }
 
     fn run_test(&self, test: Test) -> Result<Value, String> {
-        create_session_if_not_set_then(|_| {
-            let tokenizer = tokenize(test)?;
+        create_session_if_not_set_then(|s| {
+            let tokenizer = tokenize(test, s)?;
             let parsed = with_handler(tokenizer, |p| p.parse_program())?;
 
             let mut json = serde_json::to_value(parsed).expect("failed to convert to json value");
@@ -214,7 +217,7 @@ impl Namespace for InputNamespace {
     }
 
     fn run_test(&self, test: Test) -> Result<Value, String> {
-        create_session_if_not_set_then(|_| with_handler(tokenize(test)?, |p| p.parse_input()).map(yaml_or_fail))
+        create_session_if_not_set_then(|s| with_handler(tokenize(test, s)?, |p| p.parse_input()).map(yaml_or_fail))
     }
 }
 

compiler/parser/src/tokenizer/lexer.rs

@@ -449,7 +449,7 @@ pub struct SpannedToken {
 
 impl SpannedToken {
     /// Returns a dummy token at a dummy span.
-    pub fn dummy() -> Self {
+    pub const fn dummy() -> Self {
         Self {
             token: Token::Question,
             span: Span::dummy(),

compiler/parser/src/tokenizer/mod.rs

@@ -21,7 +21,6 @@
 
 pub(crate) mod token;
 use std::iter;
-use std::sync::Arc;
 
 pub use self::token::KEYWORD_TOKENS;
 pub(crate) use self::token::*;
@@ -30,78 +29,38 @@ pub(crate) mod lexer;
 pub(crate) use self::lexer::*;
 
 use leo_errors::{ParserError, Result};
-use leo_span::Span;
+use leo_span::{
+    span::{BytePos, Pos},
+    Span,
+};
 
 /// Creates a new vector of spanned tokens from a given file path and source code text.
-pub(crate) fn tokenize(path: &str, input: &str) -> Result<Vec<SpannedToken>> {
-    tokenize_iter(path, input).collect()
+pub(crate) fn tokenize(input: &str, start_pos: BytePos) -> Result<Vec<SpannedToken>> {
+    tokenize_iter(input, start_pos).collect()
 }
 
-/// Yields spanned tokens from a given file path and source code text.
-pub(crate) fn tokenize_iter<'a>(path: &'a str, input: &'a str) -> impl 'a + Iterator<Item = Result<SpannedToken>> {
-    let path = Arc::new(path.to_string());
+/// Yields spanned tokens from the given source code text.
+///
+/// The `lo` byte position determines where spans will start.
+pub(crate) fn tokenize_iter(input: &str, mut lo: BytePos) -> impl '_ + Iterator<Item = Result<SpannedToken>> {
     let mut index = 0usize;
-    let mut line_no = 1usize;
-    let mut line_start = 0usize;
     iter::from_fn(move || {
         while input.len() > index {
-            let token = match Token::eat(&input[index..]) {
+            let (token_len, token) = match Token::eat(&input[index..]) {
                 Err(e) => return Some(Err(e)),
                 Ok(t) => t,
             };
+            index += token_len;
+
+            let span = Span::new(lo, lo + BytePos::from_usize(token_len));
+            lo = span.hi;
 
             match token {
-                (token_len, Token::WhiteSpace) => {
-                    let bytes = input.as_bytes();
-                    if bytes[index] == 0x000D && matches!(bytes.get(index + 1), Some(0x000A)) {
-                        // Check carriage return followed by newline.
-                        line_no += 1;
-                        line_start = index + token_len + 1;
-                        index += token_len;
-                    } else if matches!(bytes[index], 0x000A | 0x000D) {
-                        // Check new-line or carriage-return
-                        line_no += 1;
-                        line_start = index + token_len;
-                    }
-                    index += token_len;
-                }
-                (token_len, token) => {
-                    let mut span = Span::new(
-                        line_no,
-                        line_no,
-                        index - line_start + 1,
-                        index - line_start + token_len + 1,
-                        path.clone(),
-                        input[line_start
-                            ..input[line_start..]
-                                .find('\n')
-                                .map(|i| i + line_start)
-                                .unwrap_or(input.len())]
-                            .to_string(),
-                    );
-                    match &token {
-                        Token::CommentLine(_) => {
-                            line_no += 1;
-                            line_start = index + token_len;
-                        }
-                        Token::CommentBlock(block) => {
-                            let line_ct = block.chars().filter(|x| *x == '\n').count();
-                            line_no += line_ct;
-                            if line_ct > 0 {
-                                let last_line_index = block.rfind('\n').unwrap();
-                                line_start = index + last_line_index + 1;
-                                span.col_stop = index + token_len - line_start + 1;
-                            }
-                            span.line_stop = line_no;
-                        }
-                        Token::AddressLit(address) if !check_address(address) => {
-                            return Some(Err(ParserError::invalid_address_lit(address, &span).into()));
-                        }
-                        _ => (),
-                    }
-                    index += token_len;
-                    return Some(Ok(SpannedToken { token, span }));
+                Token::WhiteSpace => continue,
+                Token::AddressLit(address) if !check_address(&address) => {
+                    return Some(Err(ParserError::invalid_address_lit(address, span).into()));
                 }
+                _ => return Some(Ok(SpannedToken { token, span })),
             }
         }
 
@@ -112,14 +71,12 @@ pub(crate) fn tokenize_iter<'a>(path: &'a str, input: &'a str) -> impl 'a + Iter
 #[cfg(test)]
 mod tests {
     use super::*;
-    use leo_span::symbol::create_session_if_not_set_then;
+    use leo_span::{source_map::FileName, symbol::create_session_if_not_set_then};
 
     #[test]
     fn test_tokenizer() {
-        create_session_if_not_set_then(|_| {
-            let tokens = tokenize(
-                "test_path",
-                r#"
+        create_session_if_not_set_then(|s| {
+            let raw = r#"
     'a'
     '😭'
     "test"
@@ -194,9 +151,9 @@ mod tests {
     ?
     // test
     /* test */
-        //"#,
-            )
-            .unwrap();
+    //"#;
+            let sf = s.source_map.new_source(raw, FileName::Custom("test".into()));
+            let tokens = tokenize(&sf.src, sf.start_pos).unwrap();
             let mut output = String::new();
             for SpannedToken { token, .. } in tokens.iter() {
                 output += &format!("{} ", token);
@@ -212,7 +169,7 @@ mod tests {
 
     #[test]
     fn test_spans() {
-        create_session_if_not_set_then(|_| {
+        create_session_if_not_set_then(|s| {
             let raw = r#"
 ppp            test
             // test
@@ -223,7 +180,10 @@ ppp            test
             test */
             test
             "#;
-            let tokens = tokenize("test_path", raw).unwrap();
+
+            let sm = &s.source_map;
+            let sf = sm.new_source(raw, FileName::Custom("test".into()));
+            let tokens = tokenize(&sf.src, sf.start_pos).unwrap();
             let mut line_indicies = vec![0];
             for (i, c) in raw.chars().enumerate() {
                 if c == '\n' {
@@ -231,11 +191,7 @@ ppp            test
                 }
             }
             for token in tokens.iter() {
-                let token_raw = token.token.to_string();
-                let start = line_indicies.get(token.span.line_start - 1).unwrap();
-                let stop = line_indicies.get(token.span.line_stop - 1).unwrap();
-                let original = &raw[*start + token.span.col_start - 1..*stop + token.span.col_stop - 1];
-                assert_eq!(original, &token_raw);
+                assert_eq!(token.token.to_string(), sm.contents_of_span(token.span).unwrap());
             }
         })
     }

compiler/passes/src/symbol_table/table.rs

@@ -37,7 +37,7 @@ pub struct SymbolTable<'a> {
 impl<'a> SymbolTable<'a> {
     pub fn check_shadowing(&self, symbol: &Symbol) -> Result<()> {
         if let Some(function) = self.functions.get(symbol) {
-            Err(AstError::shadowed_function(symbol, &function.span).into())
+            Err(AstError::shadowed_function(symbol, function.span).into())
         } else {
             self.variables.check_shadowing(symbol)?;
             Ok(())

compiler/passes/src/symbol_table/variable_symbol.rs

@@ -41,7 +41,7 @@ impl Display for Declaration {
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct VariableSymbol<'a> {
     pub type_: &'a Type,
-    pub span: &'a Span,
+    pub span: Span,
     pub declaration: Declaration,
 }
 

compiler/passes/src/type_checker/check_expressions.rs

@@ -39,7 +39,7 @@ fn return_incorrect_type(t1: Option<Type>, t2: Option<Type>, expected: Option<Ty
 }
 
 impl<'a> TypeChecker<'a> {
-    pub(crate) fn compare_expr_type(&mut self, expr: &Expression, expected: Option<Type>, span: &Span) -> Option<Type> {
+    pub(crate) fn compare_expr_type(&mut self, expr: &Expression, expected: Option<Type>, span: Span) -> Option<Type> {
         match expr {
             Expression::Identifier(ident) => {
                 if let Some(var) = self.symbol_table.lookup_variable(&ident.name) {

compiler/passes/src/type_checker/check_statements.rs

@@ -73,7 +73,7 @@ impl<'a> StatementVisitor<'a> for TypeChecker<'a> {
             Some(var.type_.clone())
         } else {
             self.handler.emit_err(
-                TypeCheckerError::unknown_sym("variable", &input.assignee.identifier.name, &input.assignee.span).into(),
+                TypeCheckerError::unknown_sym("variable", &input.assignee.identifier.name, input.assignee.span).into(),
             );
 
             None

compiler/passes/src/type_checker/checker.rs

@@ -79,7 +79,7 @@ impl<'a> TypeChecker<'a> {
         }
     }
 
-    pub(crate) fn assert_type(&self, type_: Type, expected: Option<Type>, span: &Span) -> Type {
+    pub(crate) fn assert_type(&self, type_: Type, expected: Option<Type>, span: Span) -> Type {
         if let Some(expected) = expected {
             if type_ != expected {
                 self.handler
@@ -90,7 +90,7 @@ impl<'a> TypeChecker<'a> {
         type_
     }
 
-    pub(crate) fn assert_one_of_types(&self, type_: Option<Type>, expected: &[Type], span: &Span) -> Option<Type> {
+    pub(crate) fn assert_one_of_types(&self, type_: Option<Type>, expected: &[Type], span: Span) -> Option<Type> {
         if let Some(type_) = type_.clone() {
             for t in expected.iter() {
                 if &type_ == t {
@@ -111,15 +111,15 @@ impl<'a> TypeChecker<'a> {
         type_
     }
 
-    pub(crate) fn assert_arith_type(&self, type_: Option<Type>, span: &Span) -> Option<Type> {
+    pub(crate) fn assert_arith_type(&self, type_: Option<Type>, span: Span) -> Option<Type> {
         self.assert_one_of_types(type_, ARITHMETIC_TYPES, span)
     }
 
-    pub(crate) fn assert_field_or_int_type(&self, type_: Option<Type>, span: &Span) -> Option<Type> {
+    pub(crate) fn assert_field_or_int_type(&self, type_: Option<Type>, span: Span) -> Option<Type> {
         self.assert_one_of_types(type_, FIELD_AND_INT_TYPES, span)
     }
 
-    pub(crate) fn assert_int_type(&self, type_: Option<Type>, span: &Span) -> Option<Type> {
+    pub(crate) fn assert_int_type(&self, type_: Option<Type>, span: Span) -> Option<Type> {
         self.assert_one_of_types(type_, INT_TYPES, span)
     }
 }

leo/errors/src/common/backtraced.rs

@@ -20,6 +20,7 @@ use backtrace::Backtrace;
 use color_backtrace::{BacktracePrinter, Verbosity};
 use colored::Colorize;
 use derivative::Derivative;
+use leo_span::source_map::is_not_test_framework;
 
 /// The indent for an error message.
 pub(crate) const INDENT: &str = "    ";
@@ -120,12 +121,7 @@ impl fmt::Display for Backtraced {
         let message = format!("{kind} [{code}]: {message}", message = self.message,);
 
         // To avoid the color enabling characters for comparison with test expectations.
-        if std::env::var("LEO_TESTFRAMEWORK")
-            .unwrap_or_default()
-            .trim()
-            .to_owned()
-            .is_empty()
-        {
+        if is_not_test_framework() {
             if self.error {
                 write!(f, "{}", message.bold().red())?;
             } else {

leo/errors/src/common/formatted.rs

@@ -16,7 +16,7 @@
 
 use crate::{Backtraced, INDENT};
 
-use leo_span::Span;
+use leo_span::{source_map::SpanLocation, symbol::with_session_globals, Span};
 
 use backtrace::Backtrace;
 use color_backtrace::{BacktracePrinter, Verbosity};
@@ -50,14 +50,14 @@ impl Formatted {
         code_identifier: i8,
         type_: String,
         error: bool,
-        span: &Span,
+        span: Span,
         backtrace: Backtrace,
     ) -> Self
     where
         S: ToString,
     {
         Self {
-            span: span.clone(),
+            span,
             backtrace: Backtraced::new_from_backtrace(
                 message.to_string(),
                 help,
@@ -107,7 +107,18 @@ impl fmt::Display for Formatted {
             underline
         };
 
-        let underlined = underline(self.span.col_start, self.span.col_stop);
+        let (loc, contents) = with_session_globals(|s| {
+            (
+                s.source_map
+                    .span_to_location(self.span)
+                    .unwrap_or_else(SpanLocation::dummy),
+                s.source_map
+                    .line_contents_of_span(self.span)
+                    .unwrap_or_else(|| "<contents unavailable>".to_owned()),
+            )
+        });
+
+        let underlined = underline(loc.col_start, loc.col_stop);
 
         let (kind, code) = if self.backtrace.error {
             ("Error", self.error_code())
@@ -138,17 +149,17 @@ impl fmt::Display for Formatted {
             "\n{indent     }--> {path}:{line_start}:{start}\n\
             {indent     } |\n",
             indent = INDENT,
-            path = &*self.span.path,
-            line_start = self.span.line_start,
-            start = self.span.col_start,
+            path = &loc.source_file.name,
+            line_start = loc.line_start,
+            start = loc.col_start,
         )?;
 
-        for (line_no, line) in self.span.content.lines().enumerate() {
+        for (line_no, line) in contents.lines().enumerate() {
             writeln!(
                 f,
                 "{line_no:width$} | {text}",
                 width = INDENT.len(),
-                line_no = self.span.line_start + line_no,
+                line_no = loc.line_start + line_no,
                 text = line,
             )?;
         }

leo/errors/src/common/macros.rs

@@ -96,7 +96,7 @@ macro_rules! create_messages {
         // Formatted errors always takes a span.
         $(#[$error_func_docs])*
         // Expands additional arguments for the error defining function.
-        pub fn $name($($arg_names: $arg_types,)* span: &leo_span::Span) -> Self {
+        pub fn $name($($arg_names: $arg_types,)* span: leo_span::Span) -> Self {
             Self::Formatted(
                 Formatted::new_from_span(
                     $message,

leo/errors/src/emitter/mod.rs

@@ -265,7 +265,7 @@ impl Handler {
 mod tests {
     use super::*;
     use crate::ParserError;
-    use leo_span::Span;
+    use leo_span::{symbol::create_session_if_not_set_then, Span};
 
     #[test]
     fn fresh_no_errors() {
@@ -276,28 +276,30 @@ mod tests {
 
     #[test]
     fn buffer_works() {
+        create_session_if_not_set_then(|_| {
             let count_err = |s: String| s.lines().filter(|l| l.contains("Error")).count();
 
             let res: Result<(), _> = Handler::with(|h| {
                 let s = Span::default();
                 assert_eq!(h.err_count(), 0);
-            h.emit_err(ParserError::invalid_import_list(&s).into());
+                h.emit_err(ParserError::invalid_import_list(s).into());
                 assert_eq!(h.err_count(), 1);
-            h.emit_err(ParserError::unexpected_eof(&s).into());
+                h.emit_err(ParserError::unexpected_eof(s).into());
                 assert_eq!(h.err_count(), 2);
-            Err(ParserError::spread_in_array_init(&s).into())
+                Err(ParserError::spread_in_array_init(s).into())
             });
 
             assert_eq!(count_err(res.unwrap_err().to_string()), 3);
 
             let res: Result<(), _> = Handler::with(|h| {
                 let s = Span::default();
-            h.emit_err(ParserError::invalid_import_list(&s).into());
-            h.emit_err(ParserError::unexpected_eof(&s).into());
+                h.emit_err(ParserError::invalid_import_list(s).into());
+                h.emit_err(ParserError::unexpected_eof(s).into());
                 Ok(())
             });
             assert_eq!(count_err(res.unwrap_err().to_string()), 2);
 
             let () = Handler::with(|_| Ok(())).unwrap();
+        })
     }
 }

leo/span/Cargo.toml

@@ -18,16 +18,8 @@ license = "GPL-3.0"
 edition = "2021"
 rust-version = "1.56.1"
 
-[dependencies.fxhash]
-version = "0.2.1"
-
-[dependencies.indexmap]
-version = "1.8"
-features = ["serde"]
-
-[dependencies.serde]
-version = "1.0.133"
-features = [ "derive", "rc" ]
-
-[dependencies.scoped-tls]
-version = "1.0.0"
+[dependencies]
+fxhash = "0.2.1"
+indexmap = { version = "1.8", features = ["serde"] }
+serde = { version = "1.0.133", features = [ "derive", "rc" ] }
+scoped-tls = { version = "1.0.0" }

leo/span/src/lib.rs

@@ -23,3 +23,5 @@ pub mod span;
 pub use span::Span;
 
 pub mod span_json;
+
+pub mod source_map;

leo/span/src/source_map.rs

@@ -0,0 +1,441 @@
+use crate::span::{BytePos, CharPos, Pos, Span};
+use std::{
+    cell::RefCell,
+    fmt, fs, io,
+    path::{Path, PathBuf},
+    rc::Rc,
+};
+
+/// The source map containing all recorded sources,
+/// methods to register new ones,
+/// and methods to query about spans in relation to recorded sources.
+#[derive(Default)]
+pub struct SourceMap {
+    /// The actual source map data.
+    inner: RefCell<SourceMapInner>,
+}
+
+/// Actual data of the source map.
+/// We use this setup for purposes of interior mutability.
+#[derive(Default)]
+struct SourceMapInner {
+    /// The address space below this value is currently used by the files in the source map.
+    used_address_space: u32,
+
+    /// All the source files recorded thus far.
+    ///
+    /// The list is append-only with mappings from the start byte position
+    /// for fast lookup from a `Span` to its `SourceFile`.
+    source_files: Vec<Rc<SourceFile>>,
+}
+
+impl SourceMap {
+    /// Loads the given `path` and returns a `SourceFile` for it.
+    pub fn load_file(&self, path: &Path) -> io::Result<Rc<SourceFile>> {
+        Ok(self.new_source(&fs::read_to_string(path)?, FileName::Real(path.to_owned())))
+    }
+
+    /// Registers `source` under the given file `name`, returning a `SourceFile` back.
+    pub fn new_source(&self, source: &str, name: FileName) -> Rc<SourceFile> {
+        let len = u32::try_from(source.len()).unwrap();
+        let mut inner = self.inner.borrow_mut();
+        let start_pos = inner.try_allocate_address_space(len).unwrap();
+        let source_file = Rc::new(SourceFile::new(name, source.to_owned(), start_pos));
+        inner.source_files.push(source_file.clone());
+        source_file
+    }
+
+    /// Find the index for the source file containing `pos`.
+    fn find_source_file_index(&self, pos: BytePos) -> Option<usize> {
+        self.inner
+            .borrow()
+            .source_files
+            .binary_search_by_key(&pos, |file| file.start_pos)
+            .map_or_else(|p| p.checked_sub(1), Some)
+    }
+
+    /// Find the source file containing `pos`.
+    fn find_source_file(&self, pos: BytePos) -> Option<Rc<SourceFile>> {
+        Some(self.inner.borrow().source_files[self.find_source_file_index(pos)?].clone())
+    }
+
+    /// Finds line column info about a given `pos`.
+    fn find_line_col(&self, pos: BytePos) -> Option<LineCol> {
+        let source_file = self.find_source_file(pos)?;
+        let (line, col) = source_file.lookup_file_pos(pos);
+        Some(LineCol { source_file, line, col })
+    }
+
+    /// Retrives the location (source file, line, col) on the given span.
+    pub fn span_to_location(&self, sp: Span) -> Option<SpanLocation> {
+        let lo = self.find_line_col(sp.lo)?;
+        let hi = self.find_line_col(sp.hi)?;
+        Some(SpanLocation {
+            source_file: lo.source_file,
+            line_start: lo.line,
+            line_stop: hi.line,
+            col_start: lo.col.to_usize() + 1,
+            col_stop: hi.col.to_usize() + 1,
+        })
+    }
+
+    /// Returns a displayable representation of the `span` as a string.
+    pub fn span_to_string(&self, span: Span) -> String {
+        let loc = match self.span_to_location(span) {
+            None => return "no-location".to_string(),
+            Some(l) => l,
+        };
+
+        if loc.line_start == loc.line_stop {
+            format!("{}:{}-{}", loc.line_start, loc.col_start, loc.col_stop)
+        } else {
+            format!(
+                "{}:{}-{}:{}",
+                loc.line_start, loc.col_start, loc.line_stop, loc.col_stop
+            )
+        }
+    }
+
+    /// Returns the source contents that is spanned by `span`.
+    pub fn contents_of_span(&self, span: Span) -> Option<String> {
+        let begin = self.find_source_file(span.lo)?;
+        let end = self.find_source_file(span.hi)?;
+        assert_eq!(begin.start_pos, end.start_pos);
+        Some(begin.contents_of_span(span))
+    }
+
+    /// Returns the source contents of the lines that `span` is within.
+    ///
+    /// That is, if the span refers to `x = 4` in the source code:
+    ///
+    /// > ```text
+    /// > // Line 1
+    /// > let x
+    /// >     = 4;
+    /// > // Line 4
+    /// > ```
+    ///
+    /// then the contents on lines 2 and 3 are returned.
+    pub fn line_contents_of_span(&self, span: Span) -> Option<String> {
+        let begin = self.find_source_file(span.lo)?;
+        let end = self.find_source_file(span.hi)?;
+        assert_eq!(begin.start_pos, end.start_pos);
+
+        let idx_lo = begin.lookup_line(span.lo).unwrap_or(0);
+        let idx_hi = begin.lookup_line(span.hi).unwrap_or(0) + 1;
+        let lo_line_pos = begin.lines[idx_lo];
+        let hi_line_pos = if idx_hi < begin.lines.len() {
+            begin.lines[idx_hi]
+        } else {
+            begin.end_pos
+        };
+        Some(begin.contents_of_span(Span::new(lo_line_pos, hi_line_pos)))
+    }
+}
+
+impl SourceMapInner {
+    /// Attempt reserving address space for `size` number of bytes.
+    fn try_allocate_address_space(&mut self, size: u32) -> Option<BytePos> {
+        let current = self.used_address_space;
+        // By adding one, we can distinguish between files, even when they are empty.
+        self.used_address_space = current.checked_add(size)?.checked_add(1)?;
+        Some(BytePos(current))
+    }
+}
+
+/// A file name.
+///
+/// For now it's simply a wrapper around `PathBuf`,
+/// but may become more complicated in the future.
+#[derive(Clone)]
+pub enum FileName {
+    /// A real file.
+    Real(PathBuf),
+    /// Any sort of description for a source.
+    Custom(String),
+}
+
+impl fmt::Display for FileName {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::Real(x) if is_not_test_framework() => x.display().fmt(f),
+            Self::Real(_) => Ok(()),
+            Self::Custom(x) => f.write_str(x),
+        }
+    }
+}
+
+/// Is the env var `LEO_TESTFRAMEWORK` not enabled?
+pub fn is_not_test_framework() -> bool {
+    std::env::var("LEO_TESTFRAMEWORK")
+        .unwrap_or_default()
+        .trim()
+        .to_owned()
+        .is_empty()
+}
+
+/// A single source in the [`SourceMap`].
+pub struct SourceFile {
+    /// The name of the file that the source came from.
+    pub name: FileName,
+    /// The complete source code.
+    pub src: String,
+    /// The start position of this source in the `SourceMap`.
+    pub start_pos: BytePos,
+    /// The end position of this source in the `SourceMap`.
+    pub end_pos: BytePos,
+    /// Locations of line beginnings in the source code.
+    lines: Vec<BytePos>,
+    /// Locations of multi-byte characters in the source code.
+    multibyte_chars: Vec<MultiByteChar>,
+}
+
+impl SourceFile {
+    /// Creates a new `SourceMap` given the file `name`,
+    /// source contents, and the `start_pos`ition.
+    ///
+    /// This position is used for analysis purposes.
+    fn new(name: FileName, mut src: String, start_pos: BytePos) -> Self {
+        normalize_src(&mut src);
+        let end_pos = start_pos + BytePos::from_usize(src.len());
+        let (lines, multibyte_chars) = analyze_source_file(&src, start_pos);
+        Self {
+            name,
+            src,
+            start_pos,
+            end_pos,
+            lines,
+            multibyte_chars,
+        }
+    }
+
+    /// Converts an absolute `BytePos` to a `CharPos` relative to the `SourceFile`.
+    fn bytepos_to_file_charpos(&self, bpos: BytePos) -> CharPos {
+        // The number of extra bytes due to multibyte chars in the `SourceFile`.
+        let mut total_extra_bytes = 0;
+
+        for mbc in self.multibyte_chars.iter() {
+            if mbc.pos < bpos {
+                // Every character is at least one byte, so we only
+                // count the actual extra bytes.
+                total_extra_bytes += mbc.bytes as u32 - 1;
+                // We should never see a byte position in the middle of a
+                // character.
+                assert!(bpos.to_u32() >= mbc.pos.to_u32() + mbc.bytes as u32);
+            } else {
+                break;
+            }
+        }
+
+        assert!(self.start_pos.to_u32() + total_extra_bytes <= bpos.to_u32());
+        CharPos(bpos.to_usize() - self.start_pos.to_usize() - total_extra_bytes as usize)
+    }
+
+    /// Finds the line containing the given position. The return value is the
+    /// index into the `lines` array of this `SourceFile`, not the 1-based line
+    /// number. If the source_file is empty or the position is located before the
+    /// first line, `None` is returned.
+    fn lookup_line(&self, pos: BytePos) -> Option<usize> {
+        match self.lines.binary_search(&pos) {
+            Ok(idx) => Some(idx),
+            Err(0) => None,
+            Err(idx) => Some(idx - 1),
+        }
+    }
+
+    /// Looks up the file's (1-based) line number and (0-based `CharPos`) column offset, for a
+    /// given `BytePos`.
+    fn lookup_file_pos(&self, pos: BytePos) -> (usize, CharPos) {
+        let chpos = self.bytepos_to_file_charpos(pos);
+        match self.lookup_line(pos) {
+            Some(a) => {
+                let line = a + 1; // Line numbers start at 1
+                let linebpos = self.lines[a];
+                let linechpos = self.bytepos_to_file_charpos(linebpos);
+                let col = chpos - linechpos;
+                assert!(chpos >= linechpos);
+                (line, col)
+            }
+            None => (0, chpos),
+        }
+    }
+
+    /// Returns contents of a `span` assumed to be within the given file.
+    fn contents_of_span(&self, span: Span) -> String {
+        let begin_pos = self.bytepos_to_file_charpos(span.lo).to_usize();
+        let end_pos = self.bytepos_to_file_charpos(span.hi).to_usize();
+        String::from_utf8_lossy(&self.src.as_bytes()[begin_pos..end_pos]).into_owned()
+    }
+}
+
+/// Detailed information on a `Span`.
+pub struct SpanLocation {
+    pub source_file: Rc<SourceFile>,
+    pub line_start: usize,
+    pub line_stop: usize,
+    pub col_start: usize,
+    pub col_stop: usize,
+}
+
+impl SpanLocation {
+    /// Returns a dummy location.
+    pub fn dummy() -> Self {
+        let dummy = "<dummy>".to_owned();
+        let span = Span::dummy();
+        Self {
+            source_file: Rc::new(SourceFile {
+                name: FileName::Custom(dummy.clone()),
+                src: dummy,
+                start_pos: span.lo,
+                end_pos: span.hi,
+                lines: Vec::new(),
+                multibyte_chars: Vec::new(),
+            }),
+            line_start: 0,
+            line_stop: 0,
+            col_start: 0,
+            col_stop: 0,
+        }
+    }
+}
+
+/// File / Line / Column information on a `BytePos`.
+pub struct LineCol {
+    /// Information on the original source.
+    pub source_file: Rc<SourceFile>,
+    /// The 1-based line number.
+    pub line: usize,
+    /// The (0-based) column offset into the line.
+    pub col: CharPos,
+}
+
+/// Normalizes the source code and records the normalizations.
+fn normalize_src(src: &mut String) {
+    remove_bom(src);
+    normalize_newlines(src);
+}
+
+/// Removes UTF-8 BOM, if any.
+fn remove_bom(src: &mut String) {
+    if src.starts_with('\u{feff}') {
+        src.drain(..3);
+    }
+}
+
+/// Replaces `\r\n` with `\n` in-place in `src`.
+///
+/// Returns error if there's a lone `\r` in the string.
+fn normalize_newlines(src: &mut String) {
+    if !src.as_bytes().contains(&b'\r') {
+        return;
+    }
+
+    // We replace `\r\n` with `\n` in-place, which doesn't break utf-8 encoding.
+    // While we *can* call `as_mut_vec` and do surgery on the live string
+    // directly, let's rather steal the contents of `src`. This makes the code
+    // safe even if a panic occurs.
+
+    let mut buf = std::mem::take(src).into_bytes();
+    let mut gap_len = 0;
+    let mut tail = buf.as_mut_slice();
+    loop {
+        let idx = match find_crlf(&tail[gap_len..]) {
+            None => tail.len(),
+            Some(idx) => idx + gap_len,
+        };
+        tail.copy_within(gap_len..idx, 0);
+        tail = &mut tail[idx - gap_len..];
+        if tail.len() == gap_len {
+            break;
+        }
+        gap_len += 1;
+    }
+
+    // Account for removed `\r`.
+    // After `set_len`, `buf` is guaranteed to contain utf-8 again.
+    let new_len = buf.len() - gap_len;
+    unsafe {
+        buf.set_len(new_len);
+        *src = String::from_utf8_unchecked(buf);
+    }
+
+    fn find_crlf(src: &[u8]) -> Option<usize> {
+        let mut search_idx = 0;
+        while let Some(idx) = find_cr(&src[search_idx..]) {
+            if src[search_idx..].get(idx + 1) != Some(&b'\n') {
+                search_idx += idx + 1;
+                continue;
+            }
+            return Some(search_idx + idx);
+        }
+        None
+    }
+
+    fn find_cr(src: &[u8]) -> Option<usize> {
+        src.iter().position(|&b| b == b'\r')
+    }
+}
+
+/// Identifies an offset of a multi-byte character in a `SourceFile`.
+#[derive(Copy, Clone, Eq, PartialEq, Debug)]
+struct MultiByteChar {
+    /// The absolute offset of the character in the `SourceMap`.
+    pub pos: BytePos,
+    /// The number of bytes, `>= 2`.
+    pub bytes: u8,
+}
+
+/// Finds all newlines, multi-byte characters, and non-narrow characters in a
+/// SourceFile.
+///
+/// This function will use an SSE2 enhanced implementation if hardware support
+/// is detected at runtime.
+fn analyze_source_file(src: &str, source_file_start_pos: BytePos) -> (Vec<BytePos>, Vec<MultiByteChar>) {
+    let mut lines = vec![source_file_start_pos];
+    let mut multi_byte_chars = vec![];
+
+    let mut i = 0;
+    let src_bytes = src.as_bytes();
+
+    while i < src.len() {
+        // SAFETY: We verified that i < src.len().
+        let i_usize = i as usize;
+        let byte = unsafe { *src_bytes.get_unchecked(i_usize) };
+
+        // How much to advance to get to the next UTF-8 char in the string.
+        let mut char_len = 1;
+
+        let pos = BytePos::from_usize(i) + source_file_start_pos;
+
+        if let b'\n' = byte {
+            lines.push(pos + BytePos(1));
+        } else if byte >= 127 {
+            // The slow path:
+            // This is either ASCII control character "DEL" or the beginning of
+            // a multibyte char. Just decode to `char`.
+            let c = (&src[i..]).chars().next().unwrap();
+            char_len = c.len_utf8();
+
+            if char_len > 1 {
+                assert!((2..=4).contains(&char_len));
+                let bytes = char_len as u8;
+                let mbc = MultiByteChar { pos, bytes };
+                multi_byte_chars.push(mbc);
+            }
+        }
+
+        i += char_len;
+    }
+
+    // The code above optimistically registers a new line *after* each \n it encounters.
+    // If that point is already outside the source_file, remove it again.
+    if let Some(&last_line_start) = lines.last() {
+        let source_file_end = source_file_start_pos + BytePos::from_usize(src.len());
+        assert!(source_file_end >= last_line_start);
+        if last_line_start == source_file_end {
+            lines.pop();
+        }
+    }
+
+    (lines, multi_byte_chars)
+}

leo/span/src/span.rs

@@ -16,103 +16,47 @@
 
 //! Defines the `Span` type used to track where code comes from.
 
-use std::{fmt, sync::Arc, usize};
+use core::ops::{Add, Sub};
+use serde::{Deserialize, Serialize};
+use std::{fmt, usize};
 
-use serde::ser::{Serialize, SerializeStruct, Serializer};
-use serde::Deserialize;
+use crate::symbol::with_session_globals;
 
 /// The span type which tracks where formatted errors originate from in a Leo file.
 /// This is used in many spots throughout the rest of the Leo crates.
-#[derive(Clone, Debug, Default, Deserialize, Eq, Hash, PartialEq)]
+#[derive(Copy, Clone, Debug, Default, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Span {
-    // TODO(Centril): All of could be optimized to just `{ lo: u32, hi: u32 }`,
-    // i.e. 8 bytes by indexing into a global source map of all files concatenated.
-    // That would also give us `Copy` which is quite nice!
-    /// The line number where the error started.
-    pub line_start: usize,
-    /// The line number where the error stopped.
-    pub line_stop: usize,
-    /// The column number where the error started.
-    pub col_start: usize,
-    /// The column number where the error stopped.
-    pub col_stop: usize,
-    /// The path to the Leo file containing the error.
-    pub path: Arc<String>,
-    /// The content of the line(s) that the span is found on.
-    pub content: String,
+    /// The start position of the span.
+    pub lo: BytePos,
+    /// The end position of the span.
+    /// The length is simply `end - start`.
+    pub hi: BytePos,
 }
 
 impl Span {
-    /// Generate a new span from:
-    /// - Where the Leo line starts.
-    /// - Where the Leo line stops.
-    /// - Where the Leo column starts.
-    /// - Where the Leo column stops.
-    /// - The path to the Leo file.
-    /// - The content of those specified bounds.
-    pub fn new(
-        line_start: usize,
-        line_stop: usize,
-        col_start: usize,
-        col_stop: usize,
-        path: Arc<String>,
-        content: String,
-    ) -> Self {
-        Self {
-            line_start,
-            line_stop,
-            col_start,
-            col_stop,
-            path,
-            content,
-        }
+    /// Generate a new span from the `start`ing and `end`ing positions.
+    pub fn new(start: BytePos, end: BytePos) -> Self {
+        Self { lo: start, hi: end }
     }
 
     /// Generates a dummy span with all defaults.
     /// Should only be used in temporary situations.
-    pub fn dummy() -> Self {
-        Self::new(0, 0, 0, 0, <_>::default(), <_>::default())
+    pub const fn dummy() -> Self {
+        Self {
+            lo: BytePos(0),
+            hi: BytePos(0),
         }
     }
 
-impl Serialize for Span {
-    /// Custom serialization for testing purposes.
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let mut state = serializer.serialize_struct("Color", 3)?;
-        state.serialize_field("line_start", &self.line_start)?;
-        state.serialize_field("line_stop", &self.line_stop)?;
-        state.serialize_field("col_start", &self.col_start)?;
-        state.serialize_field("col_stop", &self.col_stop)?;
-        // This is for testing purposes since the tests are run on a variety of OSes.
-        if std::env::var("LEO_TESTFRAMEWORK")
-            .unwrap_or_default()
-            .trim()
-            .to_owned()
-            .is_empty()
-        {
-            state.serialize_field("path", &self.path)?;
-        } else {
-            state.serialize_field("path", "")?;
-        }
-        state.serialize_field("content", &self.content)?;
-        state.end()
+    /// Is the span a dummy?
+    pub fn is_dummy(&self) -> bool {
+        self == &Self::dummy()
     }
 }
 
 impl fmt::Display for Span {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        if self.line_start == self.line_stop {
-            write!(f, "{}:{}-{}", self.line_start, self.col_start, self.col_stop)
-        } else {
-            write!(
-                f,
-                "{}:{}-{}:{}",
-                self.line_start, self.col_start, self.line_stop, self.col_stop
-            )
-        }
+        with_session_globals(|s| write!(f, "{}", s.source_map.span_to_string(*self)))
     }
 }
 
@@ -120,69 +64,95 @@ impl std::ops::Add for &Span {
     type Output = Span;
 
     fn add(self, other: &Span) -> Span {
-        self.clone() + other.clone()
+        *self + *other
     }
 }
 
 impl std::ops::Add for Span {
     type Output = Self;
 
-    #[allow(clippy::comparison_chain)]
     fn add(self, other: Self) -> Self {
-        if self.line_start == other.line_stop {
-            Span {
-                line_start: self.line_start,
-                line_stop: self.line_stop,
-                col_start: self.col_start.min(other.col_start),
-                col_stop: self.col_stop.max(other.col_stop),
-                path: self.path,
-                content: self.content,
-            }
-        } else {
-            let mut new_content = vec![];
-            let self_lines = self.content.lines().collect::<Vec<_>>();
-            let other_lines = other.content.lines().collect::<Vec<_>>();
-            for line in self.line_start.min(other.line_start)..self.line_stop.max(other.line_stop) + 1 {
-                if line >= self.line_start && line <= self.line_stop {
-                    new_content.push(
-                        self_lines
-                            .get(line - self.line_start)
-                            .copied()
-                            .unwrap_or_default()
-                            .to_string(),
-                    );
-                } else if line >= other.line_start && line <= other.line_stop {
-                    new_content.push(
-                        other_lines
-                            .get(line - other.line_start)
-                            .copied()
-                            .unwrap_or_default()
-                            .to_string(),
-                    );
-                } else if new_content.last().map(|x| *x != "...").unwrap_or(true) {
-                    new_content.push(format!("{:<1$}...", " ", other.col_start + 4));
+        let lo = self.lo.min(other.lo);
+        let hi = self.hi.max(other.hi);
+        Self::new(lo, hi)
     }
 }
-            let new_content = new_content.join("\n");
-            if self.line_start < other.line_stop {
-                Span {
-                    line_start: self.line_start,
-                    line_stop: other.line_stop,
-                    col_start: self.col_start,
-                    col_stop: other.col_stop,
-                    path: self.path,
-                    content: new_content,
+
+// _____________________________________________________________________________
+// Pos, BytePos, CharPos
+//
+
+pub trait Pos {
+    fn from_usize(n: usize) -> Self;
+    fn to_usize(&self) -> usize;
+    fn from_u32(n: u32) -> Self;
+    fn to_u32(&self) -> u32;
 }
-            } else {
-                Span {
-                    line_start: other.line_start,
-                    line_stop: self.line_stop,
-                    col_start: other.col_start,
-                    col_stop: self.col_stop,
-                    path: self.path,
-                    content: new_content,
+
+macro_rules! impl_pos {
+    (
+        $(
+            $(#[$attr:meta])*
+            $vis:vis struct $ident:ident($inner_vis:vis $inner_ty:ty);
+        )*
+    ) => {
+        $(
+            $(#[$attr])*
+            $vis struct $ident($inner_vis $inner_ty);
+
+            impl Pos for $ident {
+                #[inline(always)]
+                fn from_usize(n: usize) -> $ident {
+                    $ident(n as $inner_ty)
+                }
+
+                #[inline(always)]
+                fn to_usize(&self) -> usize {
+                    self.0 as usize
+                }
+
+                #[inline(always)]
+                fn from_u32(n: u32) -> $ident {
+                    $ident(n as $inner_ty)
+                }
+
+                #[inline(always)]
+                fn to_u32(&self) -> u32 {
+                    self.0 as u32
                 }
             }
+
+            impl Add for $ident {
+                type Output = $ident;
+
+                #[inline(always)]
+                fn add(self, rhs: $ident) -> $ident {
+                    $ident(self.0 + rhs.0)
                 }
             }
+
+            impl Sub for $ident {
+                type Output = $ident;
+
+                #[inline(always)]
+                fn sub(self, rhs: $ident) -> $ident {
+                    $ident(self.0 - rhs.0)
+                }
+            }
+        )*
+    };
+}
+
+impl_pos! {
+    /// A byte offset.
+    #[derive(Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord, Debug, Serialize, Deserialize, Default)]
+    pub struct BytePos(pub u32);
+
+    /// A character offset.
+    ///
+    /// Because of multibyte UTF-8 characters,
+    /// a byte offset is not equivalent to a character offset.
+    /// The [`SourceMap`] will convert [`BytePos`] values to `CharPos` values as necessary.
+    #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
+    pub struct CharPos(pub usize);
 }

leo/span/src/symbol.rs

@@ -15,6 +15,7 @@
 // along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
 
 use crate::dropless::DroplessArena;
+use crate::source_map::SourceMap;
 
 use core::cmp::PartialEq;
 use core::convert::AsRef;
@@ -287,12 +288,15 @@ impl fmt::Display for SymbolStr {
 pub struct SessionGlobals {
     /// The interner for `Symbol`s used in the compiler.
     symbol_interner: Interner,
+    /// The source map used in the compiler.
+    pub source_map: SourceMap,
 }
 
 impl SessionGlobals {
     fn new() -> Self {
         Self {
             symbol_interner: Interner::prefilled(),
+            source_map: SourceMap::default(),
         }
     }
 }

tests/expectations/compiler/compiler/address/branch.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: bbe973798ab14152165455260924a0de60131d31da32d2e223228954365dc609
-    initial_ast: fa5f2ab70ae04bbd7684fc630de6cd5d6d85e791ccf9f06e65b7ae6a03e2ec48
+      - initial_input_ast: c7315faf1ac3ceeb90260e64e4a411a27a8aa732892a64c15f49e81adf464beb
+    initial_ast: b80eed2960509f11bce6294687558fb7b907f1d83455287f944dfa981ebe1ec8
     symbol_table: 9d42b1d8f167826635e5169bc3a50c14f722fba8e5ce2480fbde3b8cf2e75237

tests/expectations/compiler/compiler/address/equal.leo.out

@@ -3,7 +3,7 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 98da6a76f2370e9311042851dde02ebaa4e64528d9461a5e722858f394d25f93
-      - initial_input_ast: 85307a4f16278d38b746d321756e41c3cf48bbb2dc5bad2f0e9a7b8c4dd2541e
-    initial_ast: 998b6e02af1be3c649cecd0129810b237f33289b801d24a90c38260561cc0318
+      - initial_input_ast: dc6b4b00185dd6c1f2b83a1bfae619c1d6e3f68ac0f1d3d87ae3bd0ed5caf083
+      - initial_input_ast: 73a38568160c3d2be402043d04ccdc2290abe27647bc81c4bd50367834c206cf
+    initial_ast: 6514080a9452d6e193510250dec3b87081e0741d05cc59ca456f2b2f3f36ec72
     symbol_table: 7ec407fabcae0eeef889009b8ba99beac3d18b2d79cc49e7760261d80bd59728

tests/expectations/compiler/compiler/address/ternary.leo.out

@@ -3,7 +3,7 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 98da6a76f2370e9311042851dde02ebaa4e64528d9461a5e722858f394d25f93
-      - initial_input_ast: 85307a4f16278d38b746d321756e41c3cf48bbb2dc5bad2f0e9a7b8c4dd2541e
-    initial_ast: c1865cfe898ea72b3f411b63364f3643ad452860c6d1db92e843f2c61094eec9
+      - initial_input_ast: b6371958e735320861c84ed514f258ae8a9858b34615364b2f9ebbaa2aaadd8c
+      - initial_input_ast: d384cfea1a36220e9ea4e246ece89d8fffa320f90aeeb85660bc445ab62a0829
+    initial_ast: 7085f8bf0a01a4fd7b73b5e3fc1c2c812d0cd459a5b6ea85791fc3c01118c7a0
     symbol_table: 5a12f141aef86a7a00b86650e23cfd9af657d6f418df7b1ee9eab06714305d31

tests/expectations/compiler/compiler/boolean/and.leo.out

@@ -3,9 +3,9 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 51b03881ad0ef3af7d105c163071fb69fb38048bea44c4bc380fd17367ce94e0
-      - initial_input_ast: 59b58754cc7667404c6bba5d90a9e53b7f9f36b6d7c9783e5b88d12728127e66
-      - initial_input_ast: 55ff7a9a3f210ea871c438a89f07da6c54ca1b8129e7344593017d22305297b4
-      - initial_input_ast: c89564770d1984e4e8c0c17c6c50b66b4a5d4ade85899562f506afc22e50496d
-    initial_ast: 30050aaa080b73f03ccc9a5fda9bdb9fcba0aea90171b8cdf39c50c5eb8ac7ab
+      - initial_input_ast: e6457724e4c3bb27eca30df861f711f962ac47fb0e7d0b9dc959be0feaeb7763
+      - initial_input_ast: c8d27a86795a6d56815a681066b7f462f5476be6d56ec910b74d90c60d8b3cc9
+      - initial_input_ast: 4ff2fb01e2d10a59bf4fcd1ed3b510c6860167dbd3bd4d099c6b8a78d2a767af
+      - initial_input_ast: 96ddbb84cba723df65571d6537a303189e6274389593980996fd7ee50eab996e
+    initial_ast: e17f5c2d253ffc1e8e3389253f89feca418b429eb912840a21172d63d117c7ec
     symbol_table: f36863240edb9fb5fb852c212a9ae1db491ee8243d0469fc155592964595e7d0

tests/expectations/compiler/compiler/boolean/conditional.leo.out

@@ -3,9 +3,9 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 51b03881ad0ef3af7d105c163071fb69fb38048bea44c4bc380fd17367ce94e0
-      - initial_input_ast: 59b58754cc7667404c6bba5d90a9e53b7f9f36b6d7c9783e5b88d12728127e66
-      - initial_input_ast: 55ff7a9a3f210ea871c438a89f07da6c54ca1b8129e7344593017d22305297b4
-      - initial_input_ast: c89564770d1984e4e8c0c17c6c50b66b4a5d4ade85899562f506afc22e50496d
-    initial_ast: 73e2d3f95cac34a231f20df1de3c53fd08ae3d9e604ee28557c1098299e8170c
+      - initial_input_ast: e7e9fd77647ac56ed68e547bfb8d0c767313030072a510ec138027ffb62fc368
+      - initial_input_ast: e43c024d6fad8a7a04672fa318936703a4798699283f7b66d9383d52acc104a0
+      - initial_input_ast: 695d879ad212b23fb3e91fae782c701c5f0469bbcaabdcfc6e5dcadc5b7e6c9a
+      - initial_input_ast: 390e951d2b90cf150acd9bc6eeeffbc3a8d7af3ce3781f14ebdce3f1054de4c8
+    initial_ast: adb3d21c4da2e7538a95ba689373f870d370001c8fb60e38a96ed6e6cf87ae6c
     symbol_table: 4fd4e476609947028fbffe357ffb9d962e96c30a9abe3677d75675ae37b12587

tests/expectations/compiler/compiler/boolean/equal.leo.out

@@ -3,9 +3,9 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 51b03881ad0ef3af7d105c163071fb69fb38048bea44c4bc380fd17367ce94e0
-      - initial_input_ast: 59b58754cc7667404c6bba5d90a9e53b7f9f36b6d7c9783e5b88d12728127e66
-      - initial_input_ast: 55ff7a9a3f210ea871c438a89f07da6c54ca1b8129e7344593017d22305297b4
-      - initial_input_ast: c89564770d1984e4e8c0c17c6c50b66b4a5d4ade85899562f506afc22e50496d
-    initial_ast: 3c8d1d820525dc4e77214dfa0628a8fb73890ee1b90cfd443a4a736e6506bbad
+      - initial_input_ast: e6457724e4c3bb27eca30df861f711f962ac47fb0e7d0b9dc959be0feaeb7763
+      - initial_input_ast: c8d27a86795a6d56815a681066b7f462f5476be6d56ec910b74d90c60d8b3cc9
+      - initial_input_ast: 4ff2fb01e2d10a59bf4fcd1ed3b510c6860167dbd3bd4d099c6b8a78d2a767af
+      - initial_input_ast: 96ddbb84cba723df65571d6537a303189e6274389593980996fd7ee50eab996e
+    initial_ast: 487ec91d706447fafcff6e448723fa41dd02e6d8ea1b3b8670460ef9a7931c90
     symbol_table: c8dd46774e298ef70fc87f89ecb8b5f23f63b1f2401f337fc97ad83b54e85871

tests/expectations/compiler/compiler/boolean/not_equal.leo.out

@@ -3,9 +3,9 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 51b03881ad0ef3af7d105c163071fb69fb38048bea44c4bc380fd17367ce94e0
-      - initial_input_ast: 59b58754cc7667404c6bba5d90a9e53b7f9f36b6d7c9783e5b88d12728127e66
-      - initial_input_ast: 55ff7a9a3f210ea871c438a89f07da6c54ca1b8129e7344593017d22305297b4
-      - initial_input_ast: c89564770d1984e4e8c0c17c6c50b66b4a5d4ade85899562f506afc22e50496d
-    initial_ast: f94ce8212b4164b85de34920f7da472033fbafe03e8e1d00a0ec7f9bae692b6c
+      - initial_input_ast: e6457724e4c3bb27eca30df861f711f962ac47fb0e7d0b9dc959be0feaeb7763
+      - initial_input_ast: c8d27a86795a6d56815a681066b7f462f5476be6d56ec910b74d90c60d8b3cc9
+      - initial_input_ast: 4ff2fb01e2d10a59bf4fcd1ed3b510c6860167dbd3bd4d099c6b8a78d2a767af
+      - initial_input_ast: 96ddbb84cba723df65571d6537a303189e6274389593980996fd7ee50eab996e
+    initial_ast: 4c24b2ad645f55d42b011b1173fc756330dfa1df4734c2c3275ff53a364ba28c
     symbol_table: 8ed9a73e996562abfe75837cfbf2103a4d9213291298206f4f63a7dac808cbc1

tests/expectations/compiler/compiler/boolean/or.leo.out

@@ -3,9 +3,9 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 51b03881ad0ef3af7d105c163071fb69fb38048bea44c4bc380fd17367ce94e0
-      - initial_input_ast: 59b58754cc7667404c6bba5d90a9e53b7f9f36b6d7c9783e5b88d12728127e66
-      - initial_input_ast: 55ff7a9a3f210ea871c438a89f07da6c54ca1b8129e7344593017d22305297b4
-      - initial_input_ast: c89564770d1984e4e8c0c17c6c50b66b4a5d4ade85899562f506afc22e50496d
-    initial_ast: ceac1c88ce7915eb171fef59cf7788b1d83cb53d313e0325b4b6e7ca7c0b0eea
+      - initial_input_ast: e6457724e4c3bb27eca30df861f711f962ac47fb0e7d0b9dc959be0feaeb7763
+      - initial_input_ast: c8d27a86795a6d56815a681066b7f462f5476be6d56ec910b74d90c60d8b3cc9
+      - initial_input_ast: 4ff2fb01e2d10a59bf4fcd1ed3b510c6860167dbd3bd4d099c6b8a78d2a767af
+      - initial_input_ast: 96ddbb84cba723df65571d6537a303189e6274389593980996fd7ee50eab996e
+    initial_ast: 69f7732147079d749ad863cb4442be4722f1b7eb16f26b7f972beed0d006044c
     symbol_table: 91630eda77eaf1e355744e663ceba26a0c3f860d3f69e8e46b03f5464d16950f

tests/expectations/compiler/compiler/char/neq.leo.out

@@ -3,20 +3,20 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: c5014ebe0b04ecf0cfca9befc3cad1725daf451b4a926741ef909fe396007891
-      - initial_input_ast: e754ce377bf760178cf72cf8b0e1597c94eb833bf18e3524c99cd86c6ac4b003
-      - initial_input_ast: ff9ecea579f37e0abbac30d7065f5293b0bf8affc53cfd627e0e1e43227e9b27
-      - initial_input_ast: 72a3e3befe5feac1a922a42ce7fa7f1bc495eeeab43b3be86df09db770c93e73
-      - initial_input_ast: 45237feb75335b96d98682c743ededad68167fcc6ad151eca3caa55b1625b647
-      - initial_input_ast: c14a6deb2a1f0f60320260b189fea801ee942e3e44e0d6334067d6d7972eb4be
-      - initial_input_ast: 38431bcff38b26387d2f41af68d2a6e22d184be6d44dbcdc6e5eda62ae822d40
-      - initial_input_ast: 767918cd56f1bc8a9c6b64cc0e92dab97698e500588a0cf480e0b5838e7067f0
-      - initial_input_ast: c7ba648f22d3b30d4f62a1093a2dcab8def815aa9f7083ee4fe9236dd63b1c0e
-      - initial_input_ast: d6acd30374e64196b072f5a1c68ba379cce1eb5e866afac4acd98643f68d1c03
-      - initial_input_ast: 2aa446f52a535b7918039280d90d098deea58ae0d84445dd31a8c66f05f52449
-      - initial_input_ast: 69a6b4dcd3e363cce68ccdae93f77ead9319af6886aecf775a09a0ed535bb02b
-      - initial_input_ast: c2f4b8b92cb0ee71de7fd532b483c2fb2c9ebcc8a59249a763fc30d05eb5d38e
-      - initial_input_ast: 9196de328711651e75edb7ffba6b85b37ca468d509b0e96e6b5271d6d0785949
-      - initial_input_ast: 012468d79c66ea8de1b7357678f0dd4f12a4188b384ed38696934add946dc72f
-    initial_ast: 5ee529ed9657976f562ba09ffbd0c642283ac523a4ed4df18520a26b3769e408
+      - initial_input_ast: 1a59d72ff9c08c97f0faa7d32e701487abce48630c3da2ec76dee451ed806c3b
+      - initial_input_ast: 8c79c9fa5fa8422d837bd092a848293d1772fdc97b80c7394146fc759768c868
+      - initial_input_ast: cbf3cfc28c6c396dd5dd24ec3cb59121d2d6615feb4aa9a452ea310248dfb238
+      - initial_input_ast: 8a914ea590d1b978e7f0da8feeebcbe195e925a20424fe0a6611b2115b072c90
+      - initial_input_ast: f37e2792fd64626a0270041c37d587d4929ac2afe6b3b9a576c3ec400271f0db
+      - initial_input_ast: d9a2bd44fa3b8e850b79be10ab046af8d61b5e781cc991250969555eaccf9d23
+      - initial_input_ast: c10a3ffcb8bbbaaa3028e8037fc183214933291d5ecf8ec0354df1b27a83c99a
+      - initial_input_ast: 32628105ebaaed3207a26402f2f7a5075f2d7d865d51e56f2e8f0bade905058c
+      - initial_input_ast: 2bc88f79d4b48e6321c08ba4a6cfeb2a7363b238d79b3a558dbc4383c14a3ebc
+      - initial_input_ast: 5d6794f9c9406df4df4673433c806588bb9ed72992bb58cc62fa63a3a872e153
+      - initial_input_ast: 833c67bb4946711a01be5f564905d83eaf4c4fbc72ff77599ff3b8dd5a5c8691
+      - initial_input_ast: 2a4441d425a2e35c929d92256601e3713c870ef3c9c6206dccb238e42be532cb
+      - initial_input_ast: 3edf030ed195c3ab8278af07fa1592314e2e3f9ad1e6c0ca3e27856be5e6f72c
+      - initial_input_ast: f3dcb662ae0facb7afdd7cee9416261a48d37baa8a4d5d7f09d81e4621b53f3f
+      - initial_input_ast: aebc549a2d2d87e1cca5e6d814b1b6dfdc4c32bb21045ad967bc67978a8ef871
+    initial_ast: 8c9ec5e2c1544bc45c6d4dd9f21caa3121c2ba61c44fb66d8148883460b20820
     symbol_table: cf3569155d9961e6cab441ea9a60f5c92d2b18e6cd2ecaa64b1529d1774d3585

tests/expectations/compiler/compiler/char/out.leo.out

@@ -3,20 +3,20 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: c5014ebe0b04ecf0cfca9befc3cad1725daf451b4a926741ef909fe396007891
-      - initial_input_ast: e754ce377bf760178cf72cf8b0e1597c94eb833bf18e3524c99cd86c6ac4b003
-      - initial_input_ast: ff9ecea579f37e0abbac30d7065f5293b0bf8affc53cfd627e0e1e43227e9b27
-      - initial_input_ast: 72a3e3befe5feac1a922a42ce7fa7f1bc495eeeab43b3be86df09db770c93e73
-      - initial_input_ast: 45237feb75335b96d98682c743ededad68167fcc6ad151eca3caa55b1625b647
-      - initial_input_ast: c14a6deb2a1f0f60320260b189fea801ee942e3e44e0d6334067d6d7972eb4be
-      - initial_input_ast: 38431bcff38b26387d2f41af68d2a6e22d184be6d44dbcdc6e5eda62ae822d40
-      - initial_input_ast: 767918cd56f1bc8a9c6b64cc0e92dab97698e500588a0cf480e0b5838e7067f0
-      - initial_input_ast: c7ba648f22d3b30d4f62a1093a2dcab8def815aa9f7083ee4fe9236dd63b1c0e
-      - initial_input_ast: d6acd30374e64196b072f5a1c68ba379cce1eb5e866afac4acd98643f68d1c03
-      - initial_input_ast: 2aa446f52a535b7918039280d90d098deea58ae0d84445dd31a8c66f05f52449
-      - initial_input_ast: 69a6b4dcd3e363cce68ccdae93f77ead9319af6886aecf775a09a0ed535bb02b
-      - initial_input_ast: c2f4b8b92cb0ee71de7fd532b483c2fb2c9ebcc8a59249a763fc30d05eb5d38e
-      - initial_input_ast: 9196de328711651e75edb7ffba6b85b37ca468d509b0e96e6b5271d6d0785949
-      - initial_input_ast: 012468d79c66ea8de1b7357678f0dd4f12a4188b384ed38696934add946dc72f
-    initial_ast: 3965395dcb477379853989110bf621aefc6a052ee39e06b9e1d15dbe0f0de184
+      - initial_input_ast: 44e0b05b0da70ab554408e1fa7a8578282522b358320cde13231c2136e4df5b1
+      - initial_input_ast: fa8ef1a0d3743224c55ca78079611c87374266313d2254c5b18a99443e038d51
+      - initial_input_ast: 6aa65f48c47c0a70326ee6034a46c38ed25116b02b748827fde3a4a46cb9cb95
+      - initial_input_ast: de106cf7de15ce9b35d00a97dccf6b90077303e8bfcec568d65352107c2a81f8
+      - initial_input_ast: a6badf7eba50a21d6ebc1c82eb70cd4081e37680dd8d4b597ea04192ccbf4e5a
+      - initial_input_ast: 72e2f6ef3f3cb3135dbb46dd1c5808c206cfa762a708a8d5483b6bc2958a33ba
+      - initial_input_ast: 0a5209868d802596f6094912deb7adaef5f21e0ee269eeaa3a661d403a64701e
+      - initial_input_ast: be71fcee4adbb8c7de279825c5fd87d8c55597a97f57f9af28d88e3f51781c79
+      - initial_input_ast: 55aae45600898144d628c1211e2de07794ce4784eef21a6b978aa064d3fa89f4
+      - initial_input_ast: 8f73004838aee69e847d99ab0b284d99c61a8283b91227e1dd890994220da8e1
+      - initial_input_ast: 6de398471c245e863855e68b0b672bcda53467f638ccf2ded60930a930f3de25
+      - initial_input_ast: 1d22c4edd4f3fec707b8cb6e60bf57b4e278913fbb6c15c4fa2bce0e318de232
+      - initial_input_ast: 7642187a32f44ae4d5743ae8f46bb669937490ff926c46cf8af8b36b5bc747c5
+      - initial_input_ast: 4d7b20c6c94064e08e0f19b0f45cbdd740f668fefcafd361865226c5af087440
+      - initial_input_ast: 9de9e1877e523f5aa44d019bba11e7bb58ad1f9952aae3254908e8b151b3ae55
+    initial_ast: 526f77f4386ed6b5dd40f7e352f48e43c04655123bf329dbed9f6dadd43a4963
     symbol_table: 1cad55eef598e4d05af7c5f88119636a2e6d23d81213bbaad908d66a32906780

tests/expectations/compiler/compiler/console/assert.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 204a90b23ba88927aabdc72aed02effa556d73742caf7d370527f79f0b30f621
-    initial_ast: 10539810602f7b65e0ac424d7e92b4565c965fdbe139b267f5fd4aae4c67d470
+      - initial_input_ast: 9698e866b0330be095c65ca93f17ed5fe3d31c61d5622eaf54c774d79d3b6950
+    initial_ast: d771cc51e9c822faf8cb1ca6f80d19c22379ac37c9ae9e357010e79029c6baf2
     symbol_table: f8c971e501487f7a368a50fd1941c3fb70684b041478fe615a91f088796e301b

tests/expectations/compiler/compiler/console/conditional_assert.leo.out

@@ -3,7 +3,7 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 204a90b23ba88927aabdc72aed02effa556d73742caf7d370527f79f0b30f621
-      - initial_input_ast: cbc36a842b21e80aee167b65bd1a59861d59a43e27915b785410f032ae19a570
-    initial_ast: 1e37339f631e947b4f85cf4f43ba4c1a26439ab565dc559f27c4923afc3ef34a
+      - initial_input_ast: e9253dc5764d8870dc6842860993ce0b2495925b3bdb18891b7c4aa67fe0a81d
+      - initial_input_ast: 3153e33ab1630d74ad221b5ce6d5e50c17fb86d91a2aae4ce67b46fec12c1ef4
+    initial_ast: 8fdb85c9c133687f89fe5c2ca9b177a4a777269eab425f9008ab330cce85542e
     symbol_table: f4e056be00b25dfd854a5be8197aeb205436bb0ee11cfe06701531ea086e038c

tests/expectations/compiler/compiler/console/error.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 38e6b369397fcf11fa921808be61baf33a705d4509bc15a46ec69e1a0aaa5031
-    initial_ast: d1d00796ff928991e5c898877a2f6e540dc744807d696b3b14af935e380eafb4
+      - initial_input_ast: 6b9e5227fdce9f916cd2398ea85c2d7e7b2f7d706bfa730b8cd1acdeb3f168cd
+    initial_ast: e3b69d0b4355afd331edf8c572b64746bc763a714626043a9edc8eba42b08ec8
     symbol_table: d46f6eb98259f34d32a60788aa178efa34166bcc6ba1058e2ff5f8327a129b9c

tests/expectations/compiler/compiler/console/log.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 38e6b369397fcf11fa921808be61baf33a705d4509bc15a46ec69e1a0aaa5031
-    initial_ast: a2e9492d07dd4600eb79386662e4fd1f56b5c95fe4b05ef149a346e1b935f908
+      - initial_input_ast: 89959164cbf734ac0d261c7459b9c1214eb2f4b3ab9ec57a0b22db487d6537e4
+    initial_ast: cb79b9db64a7e92b85706e517b586b4fe9cd591850e7130cc7bfad6dd92b4d3f
     symbol_table: 559484bc163178bf54b169f5dd573167771566aa993055b6a28f0c1a759339bc

tests/expectations/compiler/compiler/console/log_conditional.leo.out

@@ -3,7 +3,7 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: b9ca1f9e4746ba9f99375205e309b977a522109054d058039197767b39fa6833
-      - initial_input_ast: 398a847f3f6c8826a10942c856b67d9acf37a51bf4ec9109be549b24b2dfff94
-    initial_ast: a80b061288d4070d42ab6f4b37404004faab51e8a58cd301632c88bf940e9630
+      - initial_input_ast: 4132cf36ac66f6b23e249f81b5c2aafa58e4e5e945920cc29752edc5d6d8057f
+      - initial_input_ast: 586ed72429932a1aafcd0f8eed983a4babff8eada9c028b88bbeef24dab1cbc0
+    initial_ast: 0360f7fba87784c290f73693b81ca1b71e3259794f0fb3d3cbe39cc143e92d82
     symbol_table: 560afbb790df70bfc770d5c2f966428a37baf94a5c0f5312ad445456d33a2cd9

tests/expectations/compiler/compiler/console/log_input.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 38e6b369397fcf11fa921808be61baf33a705d4509bc15a46ec69e1a0aaa5031
-    initial_ast: fd62f417968d0212bd96f8069d2afafeb1f6f44e3270d1b729687cb82d882a12
+      - initial_input_ast: 5411bd17943bb0aa7b0bb27e8b38f57fd27f06f2080b13a32eee50c53de66f6c
+    initial_ast: ab02de15b37b07d52d385468d72b03f8f9ecff3c9f130b8a3985be326f9f6edf
     symbol_table: 720c2aafae77c261ed1640d4080f9a73657638baa30e54a5e10e2323b6f6eca0

tests/expectations/compiler/compiler/console/log_parameter.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 38e6b369397fcf11fa921808be61baf33a705d4509bc15a46ec69e1a0aaa5031
-    initial_ast: d95ed89ada21401d204e86326c24904a1155dce3b2c9189741152f2b0c0d2f2b
+      - initial_input_ast: 18e8a4118829470d3150268bbf8d298954e1f566ea2d42ed9f3660dc25c23fcc
+    initial_ast: 4fa505d3542f2df2abcdbbf7d487ff65e1e311366fc2eaee286f8ba253876883
     symbol_table: e5159343ab03573032873783b28058a482dd401d534a0d3af03790a5286ba470

tests/expectations/compiler/compiler/console/log_parameter_many.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 38e6b369397fcf11fa921808be61baf33a705d4509bc15a46ec69e1a0aaa5031
-    initial_ast: 916cd6ab87496b67555c23de086a4a309a9a7630c4d1e198f04d3eb591fabecf
+      - initial_input_ast: caa45de3b412d749048b9be732a4593f3094c671701093103f580817a741acbb
+    initial_ast: 8dc13a9cb4d48b8a5e33d4e16a3071869a6ac7034962af5baf8f5f19a2b218dd
     symbol_table: 757bb967973b87466c01be1a9dc78d30701964e0d234e0e65d1bbcbd3072370f

tests/expectations/compiler/compiler/definition/out_of_order.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3674d8249023145121ff35eb4d9e59b0ce79cda7e17f9f98b5dbaa6ba4f80cf2
-    initial_ast: ea05e8a68b86c5cd7189870b309bb5a4107dd6f84c9ccd359aacbfee82045242
+      - initial_input_ast: 4a7171bfd4cb5b69729e26e4c6b0915f261d3f51b2937d8de5009069f56abfc1
+    initial_ast: 8b6fdc73a1397af850bcb47a623f82ff773919308fec52eeb890c8b4a2e686e7
     symbol_table: 66779461e33acc9c5c732509637db91bd72aff3e9dae6aee0c137d0537446878

tests/expectations/compiler/compiler/field/add.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: e0c7874ac5b43acb60bfb111cfafba0b5151b202f86c459913a9d4dd8ca151b0
+      - initial_input_ast: 770cad45d17364fd3acd19fb67c66ea8f58ea54c5c42386d1a0fe02f241e9f2b
+    initial_ast: 5c6f3087ccb1ce8c559638d4a4308a784a1a69735fd3a4cbd7eccdcb6b76aeb7
     symbol_table: d666098c1c0d7c670730cfa6548d47fa89d9a1dd33642f8021b0622f9abc0e5e

tests/expectations/compiler/compiler/field/div.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: 149443378c6b75f71b33ad90306cf4b01616284ddfa2136fc19fe41e23c73178
+      - initial_input_ast: 3b1682d80f44da8eb1ea0d1236b5b9be15f7d4792fe7f31139a4362b2952d6a0
+    initial_ast: cda0e01cadbcd6488f11d1a79fd9e4d132560ff75dad986cb4502d74f3e464be
     symbol_table: 38cbfecf35fb5189618a9767d3245d02e133d59ce2a0fc0f3aba37a8fa14fe8e

tests/expectations/compiler/compiler/field/eq.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: 51eba8b00503b23218feec128cda498464acd2a9459fc717795d4137495a9820
+      - initial_input_ast: 1d6d705c0d5363431af8b58173f1061d4315c4ffe9ae175d6dd1c7ea2a01488f
+    initial_ast: fa376065aea93f4819afe923b978fd8addc4565c13b33cef8416cdd599f331b2
     symbol_table: 0879cd6e4cc609ecdbdfc87ff0f08b4f3ae54367e0a1c02116304eb1411d2c23

tests/expectations/compiler/compiler/field/field.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: d8d9ee6d763397372e62451e15980cde07796859d8ce319e4de5955d310f0cf6
+      - initial_input_ast: ccecfe74d5a1f89e892c982f5bf5bb59e094ade3b745b615ab1dcdc31b43dcd7
+    initial_ast: 15c31493b92dfe33d788f1259cc4208e47b050ed23a78febaf1611a89bea18a1
     symbol_table: 879c99134415a9bae5a26b0d2dccfab01b9374218b810853c86bcf36a76d979c

tests/expectations/compiler/compiler/field/mul.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: d95922ca56dfdffdea1e8c9668d67b17755ca66ff1c5387f034ecfb2ba961df6
+      - initial_input_ast: 770cad45d17364fd3acd19fb67c66ea8f58ea54c5c42386d1a0fe02f241e9f2b
+    initial_ast: 85b903cc00f43ea3e7c890d66ac568daded94a6c215028ef28d454e42bd6a25a
     symbol_table: 47782aad84b54a835bead341b6113b471712ddd6d19005040d16c5d199a0920a

tests/expectations/compiler/compiler/field/negate.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: 31535a250bbc7eaedc9a40720b2668544615862297f229f633f51b3311d0ac0e
+      - initial_input_ast: a2440344211fa1dec9858bba8ae80c44b17dcf10d6d75bf639bd9019de97a843
+    initial_ast: f0f1be1e9efbb5455c0188bb7e646379eb2094914382378767d90d2deecb533b
     symbol_table: e20aa1c0f5d1b64b310c0e6d6bb306713f8696f092d080eab4031eacc0dcb798

tests/expectations/compiler/compiler/field/pow_signed.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: 7b7c0226a27a7655fd6e4780fdfcf5d2bc923d2aa48585954b47b8cd852bc998
+      - initial_input_ast: 195a6921720db473ae0b5093da0353391308e0e31a698e5ef105127e94113ff6
+    initial_ast: 66e17dd0b33e9a4f2e4312c5d6605a5d63e5bdf537df5f08f1a2fdc30f24c3f5
     symbol_table: c04c06d2f689387637bac27fff30cdaa87ec9b49fc03e1fe56b1e04029b6f925

tests/expectations/compiler/compiler/field/pow_unsigned.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: 586028215ccf26abab187d6bff25c5dd332f1397be5474c468ca1411abec89a0
+      - initial_input_ast: 195a6921720db473ae0b5093da0353391308e0e31a698e5ef105127e94113ff6
+    initial_ast: b4e5d9d62d4ed1e5f963b0d957c9be73b8ebe09e749d1658396672ea7d938454
     symbol_table: 5527b2434b61b94d365ba1e8bd1c2173b9feef5aa21c99440920259fb7df2052

tests/expectations/compiler/compiler/field/sub.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: a9df57a8047f8562e1c08ac89cc25997590cb3759d7cc930714de57e8ac30624
+      - initial_input_ast: 3b1682d80f44da8eb1ea0d1236b5b9be15f7d4792fe7f31139a4362b2952d6a0
+    initial_ast: fa1fdad66c8c909e5820c04faa4709ef8c13d92933bf2d310202293b6851ac01
     symbol_table: f601b6a1652f79ac2853737ecf09f4e5f23c05873e2bb3967137a7b2b0085b04

tests/expectations/compiler/compiler/field/ternary.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 3a50bcc0c4416f93de77861848ac00cd1b40e17f4c023ab3faea0fc0c332f148
-    initial_ast: 3cec4b6f5256f2e9299abbc632cc999d268bfaad48790abeb6efaad6f8081b2f
+      - initial_input_ast: c3b606138d1dc5f4dc541ddc113fb7d6e07cad4cbd1f382fcc0f9b8517077448
+    initial_ast: 3bf00992729530c37d6bd18b45096638d49ae243d31d52d633f065844f2523a4
     symbol_table: 5bb0a34e488683807eef29093f204fb2f1cfe8da3c2e2370d61e427a109a2d4a

tests/expectations/compiler/compiler/function/conditional_return.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: 26679d48a4f878012c9f9cacccf9d2d1ef568126030a21abf74a5a4d8e5116d4
-    initial_ast: cc14440f67a0aecc81bc6e1aac0b5571fa1b9937af6ff3dde20addfce27be9e4
+      - initial_input_ast: 138147dfed32a1089f1d6a4ce19ef4f5278dcdbc2012c432ab460bc0601aaa11
+    initial_ast: 8ab7c0eefb3da8ee71f77391565e5d0ee349e690d8cb6f8d8cda9e6582b9d3c5
     symbol_table: 577abb859b2f33b9e81c5e94c82b559601f44025143fa7a6757561b47e78efa5

tests/expectations/compiler/compiler/function/duplicate_definition_fail.leo.out

@@ -2,4 +2,4 @@
 namespace: Compile
 expectation: Fail
 outputs:
-  - "Error [EAST0372014]: function `main` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function main(y: bool) -> bool {\n   4 |      ...\n   5 |      ...\n   6 | }\n     | ^\nError [EAST0372014]: function `main` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function main(y: bool) -> bool {\n   4 |      ...\n   5 |      ...\n   6 | }\n     | ^"
+  - "Error [EAST0372014]: function `main` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function main(y: bool) -> bool {\n   4 |     console.log(\"{}\", 1u8);\n   5 |     return y;\n   6 | }\n     | ^\nError [EAST0372014]: function `main` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function main(y: bool) -> bool {\n   4 |     console.log(\"{}\", 1u8);\n   5 |     return y;\n   6 | }\n     | ^"

tests/expectations/compiler/compiler/function/iteration.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: e518f4721bb7a7b6c63e380710a5a8cf4e489ccf66461bf9a68dc4b369e16445
-    initial_ast: d350d059ac4c8b9d1ed1ea39e7345770d9587f8c77ca9f9a5debb1d6ef41038c
+      - initial_input_ast: 78b65cde248c05f4abfe2d3cf794fbd44de082303631db7e3002aa724099fee1
+    initial_ast: b9c41b81bba799989ce6abcae9ea82f5ba0564a66709c675db033456ac1ef862
     symbol_table: 6754c028b1d3793f022a7da93be8510a6844da8a2e45f5dcaa9566252e418ee2

tests/expectations/compiler/compiler/function/iteration_repeated.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: e518f4721bb7a7b6c63e380710a5a8cf4e489ccf66461bf9a68dc4b369e16445
-    initial_ast: 58d1ae0bbcc2c4cf4fa16dc074a64a7a0c4bedef9b0a4230968211edf9b81b26
+      - initial_input_ast: 14d0aff05a3b8673ac44d18a969bd03157e19a724ebe2b6e805fdc82aa1e070d
+    initial_ast: 7266dc80dc8dc35c544868574e0c7654debd2e16f791a9a5ce711685950219a1
     symbol_table: c45d23aa877641cbf1853709cc103d389f3e3105b5c873f8bb90c3a0c48bd2ff

tests/expectations/compiler/compiler/function/repeated.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: e518f4721bb7a7b6c63e380710a5a8cf4e489ccf66461bf9a68dc4b369e16445
-    initial_ast: 0bc692fc558896d4c90a4826d54ed1c6d41ce578ee930c3546d1d9d4169b4844
+      - initial_input_ast: 5b2906e1b93966fe1b141bb06b4aa45f7a6e60ae0c0895b96cf870eb246e98b4
+    initial_ast: 07480168f37e751b264e4de7e4ef66cea4db7fb1893de65accc9d1da3435f917
     symbol_table: 7c82d098d4b483b968c5b928f68a4a6f040bf961bbf5192bf323ddabbe592da8

tests/expectations/compiler/compiler/function/return.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: e518f4721bb7a7b6c63e380710a5a8cf4e489ccf66461bf9a68dc4b369e16445
-    initial_ast: 8e4af69e677c1eb3afc851864e57fc88768d97bbfbd96b1680b263ba3a24ed98
+      - initial_input_ast: 1ee96076151487dc5e1988331d53506585dd380909cbeab8c32d3f6e6913456d
+    initial_ast: c45cde3ccb382a43e8920b48605cbd571b113a699bfa53adfc986e7ce3ab46eb
     symbol_table: 8bddbedba52c66dc7a86530a2df470eb3222992c10b75842431a82afc7e936d4

tests/expectations/compiler/compiler/function/shadow_function_with_input_fail.leo.out

@@ -2,4 +2,4 @@
 namespace: Compile
 expectation: Fail
 outputs:
-  - "Error [EAST0372014]: function `hi` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function hi() -> u8 {\n   4 |      ...\n   5 | }\n     | ^\nError [EAST0372014]: function `hi` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function hi() -> u8 {\n   4 |      ...\n   5 | }\n     | ^"
+  - "Error [EAST0372014]: function `hi` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function hi() -> u8 {\n   4 |     return 0u8;\n   5 | }\n     | ^\nError [EAST0372014]: function `hi` shadowed\n    --> compiler-test:3:1\n     |\n   3 | function hi() -> u8 {\n   4 |     return 0u8;\n   5 | }\n     | ^"

tests/expectations/compiler/compiler/group/add.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: ee823464d3be14662261697b47c73a67a47c47558987333869ea6e72d6e34ebf
-    initial_ast: 9be3781304a8515dd1a5e35ce3a23574d3b73d5403a46dbd33bb698c7f5f235a
+      - initial_input_ast: f4e1b23f37abb9bcb386ddfd37ee066395d8e84f8ace0f4eb467264131e89fb0
+    initial_ast: 526ba2fdb0342e958bc77572fab3680301af8e1f576a462bb7d94a348fa5f45e
     symbol_table: b10964224747af7f8ba12f1b3c0dfa228842b3e08b9b82d785b71def31387144

tests/expectations/compiler/compiler/group/assert_eq.leo.out

@@ -3,6 +3,6 @@ namespace: Compile
 expectation: Pass
 outputs:
   - output:
-      - initial_input_ast: ecd9a5086d5d85f1794e023ff6c06e68cc0b4ae67e3f9abc88cd1354ed8fdfad
-    initial_ast: bd47ab2f7c4c1013c5d401a6e1d6af4f28117203c9decaf9864cb0cc7806efaf
+      - initial_input_ast: a183384b085186e92efdf0ccd221ba0f3de6e75cffc5610ed583ccd95aa4adcb
+    initial_ast: bdee31d5ffcb2f4a27fb4b9deb14fea6a514d72323d827a0c0f8f44cd96aa4b6
     symbol_table: 584d3ba9f7908f1b2e0c918710e78d0a483c12aa3f4644edada2eac31ac689ca

tests/expectations/compiler/compiler/group/both_sign_high.leo.out

@@ -4,5 +4,5 @@ expectation: Pass
 outputs:
   - output:
       - initial_input_ast: no input
-    initial_ast: 640119c4e45f3df44391fe0e08e45a44dfac3a996610e10590666400ceebaff8
+    initial_ast: a5068b93a19a2a1062918085bd20112cf08451b84508236869220df920fefb0a
     symbol_table: 9a61702119ebc681917d7cb7e40ecafa00354849326bf1182635f27a28da35e9

tests/expectations/compiler/compiler/group/both_sign_inferred.leo.out

@@ -4,5 +4,5 @@ expectation: Pass
 outputs:
   - output:
       - initial_input_ast: no input
-    initial_ast: d1df1007245f08ea1398244ba810f689c018c288a85307aabb1632a6a8044de4
+    initial_ast: 11ac6a7372ddf4362cd7eb5a1823c0393db61def4f16c7f6185c4048462e3846
     symbol_table: e4a96223c049893c904a90f24d069592b33fc137de0f4816cf92089e63663693

tests/expectations/compiler/compiler/group/both_sign_low.leo.out

@@ -4,5 +4,5 @@ expectation: Pass
 outputs:
   - output:
       - initial_input_ast: no input
-    initial_ast: 36e2dac16d3b386145e585988c6dbd41890556deaa10e6776d0bb2e5de8654e3
+    initial_ast: cae7822867b84b0eaedc184a5f5824b45b5a9f2fa3d3262f463b89fd2932de33
     symbol_table: 1817d91b99941ddc2590c6a2777ad8f7d4ba26a8b2a3baa3932f1a08eb540206