mirror of
https://github.com/AleoHQ/leo.git
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101 lines
3.4 KiB
Rust
101 lines
3.4 KiB
Rust
//! Compiles a Leo program from a file path.
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use crate::{ast, errors::CompilerError, ParameterValue, Program, ResolvedProgram, ResolvedValue};
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use snarkos_errors::gadgets::SynthesisError;
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use snarkos_models::{
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curves::{Field, PrimeField},
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gadgets::r1cs::{ConstraintSynthesizer, ConstraintSystem},
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};
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use from_pest::FromPest;
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use sha2::{Digest, Sha256};
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use std::{fs, marker::PhantomData, path::PathBuf};
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#[derive(Clone)]
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pub struct Compiler<F: Field + PrimeField> {
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package_name: String,
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main_file_path: PathBuf,
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program: Program<F>,
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parameters: Vec<Option<ParameterValue<F>>>,
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output: Option<ResolvedValue<F>>,
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_engine: PhantomData<F>,
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}
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impl<F: Field + PrimeField> Compiler<F> {
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pub fn init(package_name: String, main_file_path: PathBuf) -> Self {
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Self {
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package_name,
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main_file_path,
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program: Program::new(),
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parameters: vec![],
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output: None,
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_engine: PhantomData,
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}
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}
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pub fn checksum(&self) -> Result<String, CompilerError> {
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// Read in the main file as string
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let unparsed_file = fs::read_to_string(&self.main_file_path)
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.map_err(|_| CompilerError::FileReadError(self.main_file_path.clone()))?;
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// Hash the file contents
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let mut hasher = Sha256::new();
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hasher.input(unparsed_file.as_bytes());
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let hash = hasher.result();
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Ok(hex::encode(hash))
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}
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// pub fn compile(&self) -> Result<ast::File, CompilerError> {
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// // Read in the main file as string
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// let unparsed_file = fs::read_to_string(&self.main_file_path).map_err(|_| CompilerError::FileReadError(self.main_file_path.clone()))?;
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//
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// // Parse the file using leo.pest
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// let mut file = ast::parse(&unparsed_file).map_err(|_| CompilerError::FileParsingError)?;
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//
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// // Build the abstract syntax tree
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// let syntax_tree = ast::File::from_pest(&mut file).map_err(|_| CompilerError::SyntaxTreeError)?;
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// log::debug!("{:#?}", syntax_tree);
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//
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// Ok(syntax_tree)
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// }
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pub fn evaluate_program<CS: ConstraintSystem<F>>(&mut self) -> Result<(), CompilerError> {
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// Read in the main file as string
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let unparsed_file = fs::read_to_string(&self.main_file_path)
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.map_err(|_| CompilerError::FileReadError(self.main_file_path.clone()))?;
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// Parse the file using leo.pest
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let mut file = ast::parse(&unparsed_file).map_err(|_| CompilerError::FileParsingError)?;
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// Build the abstract syntax tree
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let syntax_tree =
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ast::File::from_pest(&mut file).map_err(|_| CompilerError::SyntaxTreeError)?;
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log::debug!("{:#?}", syntax_tree);
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// Build program from abstract syntax tree
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let package_name = self.package_name.clone();
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self.program = Program::<F>::from(syntax_tree, package_name);
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self.parameters = vec![None; self.program.num_parameters];
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log::debug!("Compilation complete\n{:#?}", self.program);
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Ok(())
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}
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}
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impl<F: Field + PrimeField> ConstraintSynthesizer<F> for Compiler<F> {
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fn generate_constraints<CS: ConstraintSystem<F>>(
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self,
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cs: &mut CS,
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) -> Result<(), SynthesisError> {
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let _res = ResolvedProgram::generate_constraints(cs, self.program, self.parameters);
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// Write results to file or something
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Ok(())
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}
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}
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