apollo_infra_utils 0.18.0-dev.0

Infrastructure utility.
Documentation 
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use serde::{Deserialize, Serialize};

use crate::cairo_compiler_version::CAIRO1_COMPILER_VERSION;

/// Objects for simple deserialization of `Cargo.toml`, to fetch the Cairo1 compiler version.
/// The compiler itself isn't actually a dependency, so we compile by using the version of the
/// `cairo-lang-casm` crate.
/// The choice of this crate is arbitrary, as all compiler crate dependencies should have the
/// same version.
/// Deserializes:
/// """
/// ...
/// [workspace.dependencies]
/// ...
/// cairo-lang-casm = VERSION
/// ...
/// """
/// where `VERSION` can be a simple "x.y.z" version string or an object with a "version" field.
#[derive(Debug, Serialize, Deserialize)]
#[serde(untagged)]
enum DependencyValue {
    // cairo-lang-casm = "x.y.z".
    String(String),
    // cairo-lang-casm = { version = "x.y.z", .. }.
    Object { version: String },
}

#[derive(Debug, Serialize, Deserialize)]
struct CairoLangCasmDependency {
    #[serde(rename = "cairo-lang-casm")]
    cairo_lang_casm: DependencyValue,
}

#[derive(Debug, Serialize, Deserialize)]
struct WorkspaceFields {
    dependencies: CairoLangCasmDependency,
}

#[derive(Debug, Serialize, Deserialize)]
struct CargoToml {
    workspace: WorkspaceFields,
}

#[test]
fn test_current_compiler_version() {
    let cargo_toml: CargoToml = toml::from_str(include_str!("../../../Cargo.toml")).unwrap();
    let actual_version = match cargo_toml.workspace.dependencies.cairo_lang_casm {
        DependencyValue::String(version) | DependencyValue::Object { version } => {
            version.trim_start_matches("=").to_string()
        }
    };
    assert_eq!(CAIRO1_COMPILER_VERSION, actual_version);
}