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use std::{path::Path, str::FromStr};
use crate::{
parser::{lexer::Lexer, parser},
simplified_representation::emitter::SrEmitter,
Error, FieldList, TransitionList,
};
#[derive(Debug, PartialEq, Default)]
/// The `Contract` struct represents a parsed contract in Rust, including its name, initialization
/// parameters, fields, and transitions.
pub struct Contract {
/// Name of the parsed contract
pub name: String,
/// List of parameters needed to deploy the contract.
pub init_params: FieldList,
/// List of the contract's fields.
pub fields: FieldList,
/// List of the contract's transitions.
pub transitions: TransitionList,
}
impl FromStr for Contract {
type Err = Error;
/// Parse a Contract from a string slice
/// # Example
/// ```
/// use std::{error::Error, path::PathBuf};
/// use scilla_parser::{Contract, Field, FieldList, Transition, TransitionList, Type};
/// let contract_path = PathBuf::from("tests/contracts/chainid.scilla");
/// let contract_str = include_str!("../tests/contracts/chainid.scilla");
/// let contract = contract_str.parse::<Contract>().unwrap();
///
/// assert_eq!(
/// contract,
/// Contract {
/// name: "ChainId".to_string(),
/// fields: FieldList(vec![Field::new("dummy_field", Type::Uint256)]),
/// init_params: FieldList::default(),
/// transitions: TransitionList(vec![Transition::new(
/// "EventChainID",
/// FieldList::default()
/// )])
/// }
/// );
/// ```
fn from_str(contract: &str) -> Result<Self, Self::Err> {
let mut errors = vec![];
let parsed = parser::ProgramParser::new().parse(&mut errors, Lexer::new(contract))?;
let emitter = SrEmitter::default();
emitter.emit(&parsed).map_err(Error::ParseError)
}
}
impl Contract {
/// Parse a contract from a given path.
///
/// # Examples
///
/// ```
/// use std::{error::Error, path::PathBuf};
/// use scilla_parser::{Contract, Field, FieldList, Transition, TransitionList, Type};
/// let contract_path = PathBuf::from("tests/contracts/chainid.scilla");
/// let contract = Contract::parse(&contract_path).unwrap();
///
/// assert_eq!(
/// contract,
/// Contract {
/// name: "ChainId".to_string(),
/// fields: FieldList(vec![Field::new("dummy_field", Type::Uint256)]),
/// init_params: FieldList::default(),
/// transitions: TransitionList(vec![Transition::new(
/// "EventChainID",
/// FieldList::default()
/// )])
/// }
/// );
/// ```
pub fn parse(contract_path: &Path) -> Result<Self, Error> {
std::fs::read_to_string(contract_path)?.parse()
}
}