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feat(nargo): add
nargo execute command (#725)
feat(nargo): add option to save witness to file in execute command
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| use std::path::{Path, PathBuf}; | ||
|
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||
| use acvm::acir::native_types::Witness; | ||
| use acvm::FieldElement; | ||
| use acvm::PartialWitnessGenerator; | ||
| use clap::ArgMatches; | ||
| use noirc_abi::errors::AbiError; | ||
| use noirc_abi::input_parser::{Format, InputValue}; | ||
| use noirc_abi::{Abi, MAIN_RETURN_NAME}; | ||
| use noirc_driver::CompiledProgram; | ||
|
|
||
| use super::{create_named_dir, read_inputs_from_file, write_to_file}; | ||
| use super::{InputMap, WitnessMap}; | ||
| use crate::{ | ||
| constants::{PROVER_INPUT_FILE, TARGET_DIR, WITNESS_EXT}, | ||
| errors::CliError, | ||
| }; | ||
|
|
||
| pub(crate) fn run(args: ArgMatches) -> Result<(), CliError> { | ||
| let args = args.subcommand_matches("execute").unwrap(); | ||
| let witness_name = args.value_of("witness_name"); | ||
| let show_ssa = args.is_present("show-ssa"); | ||
| let allow_warnings = args.is_present("allow-warnings"); | ||
| let (return_value, solved_witness) = execute(show_ssa, allow_warnings)?; | ||
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| println!("Circuit witness successfully solved"); | ||
| if let Some(return_value) = return_value { | ||
| println!("Circuit output: {return_value:?}"); | ||
| } | ||
| if let Some(witness_name) = witness_name { | ||
| let mut witness_dir = std::env::current_dir().unwrap(); | ||
| witness_dir.push(TARGET_DIR); | ||
|
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||
| let witness_path = save_witness_to_dir(solved_witness, witness_name, witness_dir)?; | ||
|
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| println!("Witness saved to {}", witness_path.display()); | ||
| } | ||
| Ok(()) | ||
| } | ||
|
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| /// In Barretenberg, the proof system adds a zero witness in the first index, | ||
| /// So when we add witness values, their index start from 1. | ||
| const WITNESS_OFFSET: u32 = 1; | ||
|
|
||
| fn execute( | ||
| show_ssa: bool, | ||
| allow_warnings: bool, | ||
| ) -> Result<(Option<InputValue>, WitnessMap), CliError> { | ||
| let current_dir = std::env::current_dir().unwrap(); | ||
|
|
||
| let compiled_program = | ||
| super::compile_cmd::compile_circuit(¤t_dir, show_ssa, allow_warnings)?; | ||
|
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| execute_program(current_dir, &compiled_program) | ||
| } | ||
|
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| pub(crate) fn execute_program<P: AsRef<Path>>( | ||
| inputs_dir: P, | ||
| compiled_program: &CompiledProgram, | ||
| ) -> Result<(Option<InputValue>, WitnessMap), CliError> { | ||
| // Parse the initial witness values from Prover.toml | ||
| let witness_map = read_inputs_from_file( | ||
| inputs_dir, | ||
| PROVER_INPUT_FILE, | ||
| Format::Toml, | ||
| compiled_program.abi.as_ref().unwrap().clone(), | ||
| )?; | ||
|
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| // Solve the remaining witnesses | ||
| let solved_witness = solve_witness(compiled_program, &witness_map)?; | ||
|
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| let public_inputs = extract_public_inputs(compiled_program, &solved_witness)?; | ||
| let return_value = public_inputs.get(MAIN_RETURN_NAME).cloned(); | ||
|
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| Ok((return_value, solved_witness)) | ||
| } | ||
|
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||
| pub(crate) fn extract_public_inputs( | ||
| compiled_program: &CompiledProgram, | ||
| solved_witness: &WitnessMap, | ||
| ) -> Result<InputMap, AbiError> { | ||
| let encoded_public_inputs: Vec<FieldElement> = compiled_program | ||
| .circuit | ||
| .public_inputs | ||
| .0 | ||
| .iter() | ||
| .map(|index| solved_witness[index]) | ||
| .collect(); | ||
|
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| let public_abi = compiled_program.abi.as_ref().unwrap().clone().public_abi(); | ||
|
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| public_abi.decode(&encoded_public_inputs) | ||
| } | ||
|
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| pub(crate) fn solve_witness( | ||
| compiled_program: &CompiledProgram, | ||
| input_map: &InputMap, | ||
| ) -> Result<WitnessMap, CliError> { | ||
| let abi = compiled_program.abi.as_ref().unwrap().clone(); | ||
| let mut solved_witness = | ||
| input_map_to_witness_map(abi, input_map).map_err(|error| match error { | ||
| AbiError::UndefinedInput(_) => { | ||
| CliError::Generic(format!("{error} in the {PROVER_INPUT_FILE}.toml file.")) | ||
| } | ||
| _ => CliError::from(error), | ||
| })?; | ||
|
|
||
| let backend = crate::backends::ConcreteBackend; | ||
| backend.solve(&mut solved_witness, compiled_program.circuit.opcodes.clone())?; | ||
|
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| Ok(solved_witness) | ||
| } | ||
|
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||
| /// Given an InputMap and an Abi, produce a WitnessMap | ||
| /// | ||
| /// In particular, this method shows one how to associate values in a Toml/JSON | ||
| /// file with witness indices | ||
| fn input_map_to_witness_map(abi: Abi, input_map: &InputMap) -> Result<WitnessMap, AbiError> { | ||
| // The ABI map is first encoded as a vector of field elements | ||
| let encoded_inputs = abi.encode(input_map, true)?; | ||
|
|
||
| Ok(encoded_inputs | ||
| .into_iter() | ||
| .enumerate() | ||
| .map(|(index, witness_value)| { | ||
| let witness = Witness::new(WITNESS_OFFSET + (index as u32)); | ||
| (witness, witness_value) | ||
| }) | ||
| .collect()) | ||
| } | ||
|
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| pub(crate) fn save_witness_to_dir<P: AsRef<Path>>( | ||
| witness: WitnessMap, | ||
| witness_name: &str, | ||
| witness_dir: P, | ||
| ) -> Result<PathBuf, CliError> { | ||
| let mut witness_path = create_named_dir(witness_dir.as_ref(), "witness"); | ||
| witness_path.push(witness_name); | ||
| witness_path.set_extension(WITNESS_EXT); | ||
|
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| let buf = Witness::to_bytes(&witness); | ||
|
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| write_to_file(buf.as_slice(), &witness_path); | ||
|
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| Ok(witness_path) | ||
| } |
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