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add unique namespaces to statement gadget calls

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This commit is contained in:
collin 2020-06-22 13:11:01 -07:00
parent 9f27d22486
commit cff3be9d01
5 changed files with 125 additions and 51 deletions
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24
compiler/src/constraints/boolean.rs
View File

@ -20,6 +20,21 @@ pub(crate) fn new_bool_constant(string: String, span: Span) -> Result<Boolean, B
Ok(Boolean::constant(boolean))
}
pub(crate) fn allocate_bool<F: Field + PrimeField, CS: ConstraintSystem<F>>(
cs: &mut CS,
name: String,
option: Option<bool>,
span: Span,
) -> Result<Boolean, BooleanError> {
let boolean_name = format!("{}: bool", name);
let boolean_name_unique = format!("`{}` {}:{}", boolean_name, span.line, span.start);
Boolean::alloc(cs.ns(|| boolean_name_unique), || {
option.ok_or(SynthesisError::AssignmentMissing)
})
.map_err(|_| BooleanError::missing_boolean(boolean_name, span))
}
pub(crate) fn bool_from_input<F: Field + PrimeField, G: GroupType<F>, CS: ConstraintSystem<F>>(
cs: &mut CS,
name: String,
@ -27,7 +42,7 @@ pub(crate) fn bool_from_input<F: Field + PrimeField, G: GroupType<F>, CS: Constr
span: Span,
) -> Result<ConstrainedValue<F, G>, BooleanError> {
// Check that the input value is the correct type
let bool_value = match input_value {
let option = match input_value {
Some(input) => {
if let InputValue::Boolean(bool) = input {
Some(bool)
@ -38,12 +53,7 @@ pub(crate) fn bool_from_input<F: Field + PrimeField, G: GroupType<F>, CS: Constr
None => None,
};
let boolean_name = format!("{}: bool", name);
let boolean_name_unique = format!("`{}` {}:{}", boolean_name, span.line, span.start);
let number = Boolean::alloc(cs.ns(|| boolean_name_unique), || {
bool_value.ok_or(SynthesisError::AssignmentMissing)
})
.map_err(|_| BooleanError::missing_boolean(boolean_name, span))?;
let number = allocate_bool(cs, name, option, span)?;
Ok(ConstrainedValue::Boolean(number))
}

26
compiler/src/constraints/field.rs
View File

@ -9,6 +9,21 @@ use snarkos_models::{
gadgets::{r1cs::ConstraintSystem, utilities::alloc::AllocGadget},
};
pub(crate) fn allocate_field<F: Field + PrimeField, CS: ConstraintSystem<F>>(
cs: &mut CS,
name: String,
option: Option<String>,
span: Span,
) -> Result<FieldType<F>, FieldError> {
let field_name = format!("{}: field", name);
let field_name_unique = format!("`{}` {}:{}", field_name, span.line, span.start);
FieldType::alloc(cs.ns(|| field_name_unique), || {
option.ok_or(SynthesisError::AssignmentMissing)
})
.map_err(|_| FieldError::missing_field(field_name, span))
}
pub(crate) fn field_from_input<F: Field + PrimeField, G: GroupType<F>, CS: ConstraintSystem<F>>(
cs: &mut CS,
name: String,
@ -16,7 +31,7 @@ pub(crate) fn field_from_input<F: Field + PrimeField, G: GroupType<F>, CS: Const
span: Span,
) -> Result<ConstrainedValue<F, G>, FieldError> {
// Check that the parameter value is the correct type
let field_option = match input_value {
let option = match input_value {
Some(input) => {
if let InputValue::Field(string) = input {
Some(string)
@ -27,12 +42,7 @@ pub(crate) fn field_from_input<F: Field + PrimeField, G: GroupType<F>, CS: Const
None => None,
};
let field_name = format!("{}: field", name);
let field_name_unique = format!("`{}` {}:{}", field_name, span.line, span.start);
let field_value = FieldType::alloc(cs.ns(|| field_name_unique), || {
field_option.ok_or(SynthesisError::AssignmentMissing)
})
.map_err(|_| FieldError::missing_field(field_name, span))?;
let field = allocate_field(cs, name, option, span)?;
Ok(ConstrainedValue::Field(field_value))
Ok(ConstrainedValue::Field(field))
}

26
compiler/src/constraints/group.rs
View File

@ -7,6 +7,21 @@ use snarkos_models::{
gadgets::r1cs::ConstraintSystem,
};
pub(crate) fn allocate_group<F: Field + PrimeField, G: GroupType<F>, CS: ConstraintSystem<F>>(
cs: &mut CS,
name: String,
option: Option<String>,
span: Span,
) -> Result<G, GroupError> {
let group_name = format!("{}: group", name);
let group_name_unique = format!("`{}` {}:{}", group_name, span.line, span.start);
G::alloc(cs.ns(|| group_name_unique), || {
option.ok_or(SynthesisError::AssignmentMissing)
})
.map_err(|_| GroupError::missing_group(group_name, span))
}
pub(crate) fn group_from_input<F: Field + PrimeField, G: GroupType<F>, CS: ConstraintSystem<F>>(
cs: &mut CS,
name: String,
@ -14,7 +29,7 @@ pub(crate) fn group_from_input<F: Field + PrimeField, G: GroupType<F>, CS: Const
span: Span,
) -> Result<ConstrainedValue<F, G>, GroupError> {
// Check that the parameter value is the correct type
let group_option = match input_value {
let option = match input_value {
Some(input) => {
if let InputValue::Group(string) = input {
Some(string)
@ -25,12 +40,7 @@ pub(crate) fn group_from_input<F: Field + PrimeField, G: GroupType<F>, CS: Const
None => None,
};
let group_name = format!("{}: group", name);
let group_name_unique = format!("`{}` {}:{}", group_name, span.line, span.start);
let group_value = G::alloc(cs.ns(|| group_name_unique), || {
group_option.ok_or(SynthesisError::AssignmentMissing)
})
.map_err(|_| GroupError::missing_group(group_name, span))?;
let group = allocate_group(cs, name, option, span)?;
Ok(ConstrainedValue::Group(group_value))
Ok(ConstrainedValue::Group(group))
}

75
compiler/src/constraints/statement.rs
View File

@ -76,10 +76,17 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
ConstrainedValue::Array(old) => {
new_value.resolve_type(&vec![old[index].to_type()], span.clone())?;
let selected_value =
ConstrainedValue::conditionally_select(cs, &condition, &new_value, &old[index]).map_err(
|_| StatementError::select_fail(new_value.to_string(), old[index].to_string(), span),
)?;
let mut unique_namespace =
cs.ns(|| format!("select {} {}:{}", new_value.to_string(), span.line, span.start));
let selected_value = ConstrainedValue::conditionally_select(
&mut unique_namespace,
&condition,
&new_value,
&old[index],
)
.map_err(|_| {
StatementError::select_fail(new_value.to_string(), old[index].to_string(), span)
})?;
old[index] = selected_value;
}
@ -107,8 +114,12 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
}
_ => return Err(StatementError::array_assign_range(span)),
};
let selected_array = ConstrainedValue::conditionally_select(cs, &condition, &new_array, old_array)
.map_err(|_| StatementError::select_fail(new_array.to_string(), old_array.to_string(), span))?;
let mut unique_namespace =
cs.ns(|| format!("select {} {}:{}", new_array.to_string(), span.line, span.start));
let selected_array =
ConstrainedValue::conditionally_select(&mut unique_namespace, &condition, &new_array, old_array)
.map_err(|_| StatementError::select_fail(new_array.to_string(), old_array.to_string(), span))?;
*old_array = selected_array;
}
}
@ -146,10 +157,17 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
_ => {
new_value.resolve_type(&vec![object.1.to_type()], span.clone())?;
let selected_value =
ConstrainedValue::conditionally_select(cs, &condition, &new_value, &object.1).map_err(
|_| StatementError::select_fail(new_value.to_string(), object.1.to_string(), span),
)?;
let mut unique_namespace =
cs.ns(|| format!("select {} {}:{}", new_value.to_string(), span.line, span.start));
let selected_value = ConstrainedValue::conditionally_select(
&mut unique_namespace,
&condition,
&new_value,
&object.1,
)
.map_err(|_| {
StatementError::select_fail(new_value.to_string(), object.1.to_string(), span)
})?;
object.1 = selected_value.to_owned();
}
@ -185,9 +203,14 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
Assignee::Identifier(_identifier) => {
let condition = indicator.unwrap_or(Boolean::Constant(true));
let old_value = self.get_mutable_assignee(variable_name.clone(), span.clone())?;
new_value.resolve_type(&vec![old_value.to_type()], span.clone())?;
let selected_value = ConstrainedValue::conditionally_select(cs, &condition, &new_value, old_value)
.map_err(|_| StatementError::select_fail(new_value.to_string(), old_value.to_string(), span))?;
let mut unique_namespace =
cs.ns(|| format!("select {} {}:{}", new_value.to_string(), span.line, span.start));
let selected_value =
ConstrainedValue::conditionally_select(&mut unique_namespace, &condition, &new_value, old_value)
.map_err(|_| StatementError::select_fail(new_value.to_string(), old_value.to_string(), span))?;
*old_value = selected_value;
@ -391,9 +414,9 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
value => return Err(StatementError::conditional_boolean(value.to_string(), span)),
};
// Determine nested branch selection
// Determine nested branch 1 selection
let branch_1_indicator = Boolean::and(
&mut cs.ns(|| format!("statement branch 1 indicator {}", statement_string)),
&mut cs.ns(|| format!("branch indicator 1 {} {}:{}", statement_string, span.line, span.start)),
&outer_indicator,
&inner_indicator,
)?;
@ -408,13 +431,14 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
return_types.clone(),
)?;
// Execute branch 2
// Determine nested branch 2 selection
let branch_2_indicator = Boolean::and(
&mut cs.ns(|| format!("statement branch 2 indicator {}", statement_string)),
&mut cs.ns(|| format!("branch indicator 2 {} {}:{}", statement_string, span.line, span.start)),
&outer_indicator,
&inner_indicator.not(),
)?;
// Execute branch 2
match statement.next {
Some(next) => match next {
ConditionalNestedOrEndStatement::Nested(nested) => self.enforce_conditional_statement(
@ -435,7 +459,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
return_types,
),
},
None => Ok(None), // this is an if with no else, have to pass statements.conditional down to next statements somehow
None => Ok(None),
}
}
@ -450,7 +474,7 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
stop: Integer,
statements: Vec<Statement>,
return_types: Vec<Type>,
_span: Span,
span: Span,
) -> Result<Option<ConstrainedValue<F, G>>, StatementError> {
let mut res = None;
@ -463,11 +487,11 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
ConstrainedValue::Integer(Integer::U32(UInt32::constant(i as u32))),
);
cs.ns(|| format!("loop {} = {}", index.to_string(), i));
let mut unique_namespace = cs.ns(|| format!("for loop iteration {} {}:{}", i, span.line, span.start));
// Evaluate statements and possibly return early
if let Some(early_return) = self.evaluate_branch(
cs,
&mut unique_namespace,
file_scope.clone(),
function_scope.clone(),
indicator,
@ -491,7 +515,16 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedProgram<F, G> {
span: Span,
) -> Result<(), StatementError> {
let condition = indicator.unwrap_or(Boolean::Constant(true));
let result = left.conditional_enforce_equal(cs, right, &condition);
let unique_namespace = cs.ns(|| {
format!(
"assert {} == {} {}:{}",
left.to_string(),
right.to_string(),
span.line,
span.start
)
});
let result = left.conditional_enforce_equal(unique_namespace, right, &condition);
Ok(result.map_err(|_| StatementError::assertion_failed(left.to_string(), right.to_string(), span))?)
}

25
compiler/src/constraints/value.rs
View File

@ -1,6 +1,14 @@
//! The in memory stored value for a defined name in a resolved Leo program.
use crate::{errors::ValueError, new_bool_constant, FieldType, GroupType};
use crate::{
allocate_bool,
allocate_field,
allocate_group,
errors::ValueError,
new_bool_constant,
FieldType,
GroupType,
};
use leo_types::{Circuit, Function, Identifier, Integer, Span, Type};
use snarkos_errors::gadgets::SynthesisError;
@ -8,7 +16,7 @@ use snarkos_models::{
curves::{Field, PrimeField},
gadgets::{
r1cs::ConstraintSystem,
utilities::{alloc::AllocGadget, boolean::Boolean, eq::ConditionalEqGadget, select::CondSelectGadget},
utilities::{boolean::Boolean, eq::ConditionalEqGadget, select::CondSelectGadget},
},
};
use std::fmt;
@ -104,25 +112,28 @@ impl<F: Field + PrimeField, G: GroupType<F>> ConstrainedValue<F, G> {
// allocated values
ConstrainedValue::Boolean(boolean) => {
let option = boolean.get_value();
let name = option.map(|b| b.to_string()).unwrap_or(format!("[allocated]"));
*boolean = Boolean::alloc(cs, || option.ok_or(SynthesisError::AssignmentMissing))?;
*boolean = allocate_bool(&mut cs, name, option, span)?;
}
ConstrainedValue::Integer(integer) => {
let integer_type = integer.get_type();
let option = integer.get_value();
let name = format!("clone {}", integer);
let name = option.map(|n| n.to_string()).unwrap_or(format!("[allocated]"));
*integer = Integer::allocate_type(&mut cs, integer_type, name, option, span)?;
}
ConstrainedValue::Field(field) => {
let option = field.get_value().map(|v| format!("{}", v));
let name = option.clone().map(|f| f.to_string()).unwrap_or(format!("[allocated]"));
*field = FieldType::alloc(cs, || option.ok_or(SynthesisError::AssignmentMissing))?;
*field = allocate_field(&mut cs, name, option, span)?;
}
ConstrainedValue::Group(group) => {
let string = format!("{}", group); // may need to implement u256 -> decimal formatting
let name = format!("{}", group); // may need to implement u256 -> decimal formatting
let option = Some(name.clone());
*group = G::alloc(cs, || Ok(string))?;
*group = allocate_group(&mut cs, name, option, span)?;
}
// value wrappers
ConstrainedValue::Array(array) => {