Hyperledger Solang Solidity 解析器

这个crate是Hyperledger Solang的一部分。它包含了用于Solidity的解析器，包括Solang用于Solana和Polkadot使用的方言。

此解析器与Ethereum Solidity v0.8.22 兼容。

solang-parser 仍处于 0.*.* 版本，因此可能会随时出现破坏性更改。如果您必须依赖于 solang-parser，我们建议锁定到特定版本，即 =0.y.z。

use solang_parser::{pt::{SourceUnitPart, ContractPart}, parse};

let (tree, comments) = parse(r#"
contract flipper {
    bool private value;

    /// Constructor that initializes the `bool` value to the given `init_value`.
    constructor(bool initvalue) {
        value = initvalue;
    }

    /// A message that can be called on instantiated contracts.
    /// This one flips the value of the stored `bool` from `true`
    /// to `false` and vice versa.
    function flip() public {
        value = !value;
    }

    /// Simply returns the current value of our `bool`.
    function get() public view returns (bool) {
        return value;
    }
}
"#, 0).unwrap();

for part in &tree.0 {
    match part {
        SourceUnitPart::ContractDefinition(def) => {
            println!("found contract {:?}", def.name);
            for part in &def.parts {
                match part {
                    ContractPart::VariableDefinition(def) => {
                        println!("variable {:?}", def.name);
                    }
                    ContractPart::FunctionDefinition(def) => {
                        println!("function {:?}", def.name);
                    }
                    _ => (),
                }
            }
        }
        _ => (),
    }
}