harn-vm 0.7.56

Async bytecode virtual machine for the Harn programming language
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//! Built-in scenario manifests for the Merge Captain mock-repos
//! playground (#1020). These are the canonical seed manifests checked
//! into `examples/merge_captain/scenarios/` and embedded into the
//! binary via `include_str!` so `harn merge-captain mock init --scenario
//! <name>` works without requiring an examples/ checkout at runtime.

use std::path::Path;

use crate::value::VmError;

use super::manifest::ScenarioManifest;

const THREE_REPO_BASIC: &str =
    include_str!("../../../../../examples/merge_captain/scenarios/three_repo_basic.json");
const SINGLE_GREEN: &str =
    include_str!("../../../../../examples/merge_captain/scenarios/single_green.json");
const FORCE_PUSH_DRILL: &str =
    include_str!("../../../../../examples/merge_captain/scenarios/force_push_drill.json");

pub fn builtin_scenario_names() -> Vec<&'static str> {
    vec!["three_repo_basic", "single_green", "force_push_drill"]
}

pub fn load_builtin(name: &str) -> Result<ScenarioManifest, VmError> {
    let raw = match name {
        "three_repo_basic" => THREE_REPO_BASIC,
        "single_green" => SINGLE_GREEN,
        "force_push_drill" => FORCE_PUSH_DRILL,
        other => {
            return Err(VmError::Runtime(format!(
                "unknown built-in scenario {other:?} (available: {})",
                builtin_scenario_names().join(", ")
            )))
        }
    };
    ScenarioManifest::parse(raw.as_bytes(), Path::new(&format!("<builtin:{name}>")))
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn every_builtin_parses_and_validates() {
        for name in builtin_scenario_names() {
            load_builtin(name).unwrap_or_else(|e| panic!("scenario {name}: {e}"));
        }
    }
}