feat: package manager, build system, native cross-compilation, plugin system

Add three new crates and extend the compiler and CLI toolchain:

- el-manifest: el.toml manifest parser using serde + toml crate; supports
  package info, registry/path/version deps, build config with seal key
  sources, cross targets, and plugins; Manifest::find_manifest() walks up
  the directory tree

- el-registry: HTTP registry client (reqwest + tokio) for
  packages.neurontechnologies.ai; PackageMetadata, fetch/download/publish/
  search, BLAKE3 checksum verification, local cache at ~/.engram/packages/

- el-build: build orchestrator with incremental builds (BLAKE3 file hashes
  in .el/build-cache.json), cross-compilation target tagging, dep resolution,
  plugin registry with on_ast/on_typed_ast/on_bytecode hooks, test runner,
  fmt/check/clean commands

- CrossTarget and NativeTarget enums with triple() and artifact_extension()
  methods; NativeTarget::Host detects compile-time platform via cfg! macros

- Plugin system: CompilerPlugin trait + PluginRegistry; dynamic loading is
  a marked TODO with clear extension point for libloading

- CLI extended with: new, add, remove, update, build --cross, run, test,
  check, fmt, clean, publish, search, plugin add/remove/list; old
  single-file commands moved to build-file/seal/unseal subcommands

- Fix pre-existing debugger.rs borrow error (unwrap_or temporary lifetime)
- Fix checker.rs and codegen.rs to handle TestDef/Seed/Assert Stmt variants
- Add spec/language.md sections 12-14: package system, build system,
  plugin system, cross-compilation targets table

130 tests passing, zero warnings
This commit is contained in:
Will Anderson
2026-04-27 19:08:25 -05:00
parent 9ced941590
commit 48b72843e1
31 changed files with 4923 additions and 107 deletions
+24
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[package]
name = "el-build"
description = "Build orchestrator and incremental build system for the Engram language toolchain"
version.workspace = true
edition.workspace = true
license.workspace = true
[dependencies]
el-manifest = { path = "../el-manifest" }
el-registry = { path = "../el-registry" }
el-compiler = { path = "../el-compiler" }
el-lexer = { workspace = true }
el-parser = { workspace = true }
el-types = { workspace = true }
el-seal = { workspace = true }
serde = { workspace = true }
serde_json = { workspace = true }
thiserror = { workspace = true }
blake3 = { workspace = true }
tokio = { version = "1", features = ["fs", "io-util", "rt", "macros", "process"] }
semver = { version = "1", features = ["serde"] }
[dev-dependencies]
tempfile = "3"
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//! The core build orchestrator.
use std::path::{Path, PathBuf};
use std::time::Instant;
use el_compiler::{Compiler, CompilerOptions, Target};
use el_manifest::{BuildTarget, CrossTarget, Manifest, NativeTarget, SealKeySource};
use el_seal::{DeploymentBinding, SealAlgorithm, SealConfig};
use semver::Version;
use crate::cache::BuildCache;
use crate::error::{BuildError, BuildResult};
// ── Output types ──────────────────────────────────────────────────────────────
/// The output of a single successful build.
#[derive(Debug, Clone)]
pub struct BuildOutput {
/// Path to the produced artifact.
pub artifact_path: PathBuf,
/// Compilation target used.
pub target: BuildTarget,
/// Cross-compilation target, if this was a cross build.
pub cross_target: Option<CrossTarget>,
/// Whether the artifact is quantum-sealed.
pub sealed: bool,
/// Size of the artifact in bytes.
pub size_bytes: u64,
/// Wall-clock compilation time in milliseconds.
pub compile_time_ms: u64,
}
/// A resolved dependency (after registry lookup / path resolution).
#[derive(Debug, Clone)]
pub struct ResolvedDep {
pub name: String,
pub version: Version,
pub source: DepSource,
/// Local path to the package (either downloaded cache or local path dep).
pub path: PathBuf,
}
/// Where a resolved dependency came from.
#[derive(Debug, Clone)]
pub enum DepSource {
/// Downloaded from a registry URL.
Registry(String),
/// A local path dependency.
Path(PathBuf),
/// A git source (not yet implemented; reserved for future use).
Git(String),
}
/// Report returned by `BuildSystem::test()`.
#[derive(Debug, Clone)]
pub struct TestReport {
pub total: usize,
pub passed: usize,
pub failed: usize,
/// Descriptions of each failing test.
pub failures: Vec<String>,
}
impl TestReport {
pub fn success(&self) -> bool {
self.failed == 0
}
}
// ── Build system ──────────────────────────────────────────────────────────────
/// Orchestrates the full build pipeline for an Engram project.
pub struct BuildSystem {
pub manifest: Manifest,
pub workspace_root: PathBuf,
}
impl BuildSystem {
/// Create a new build system from a manifest and workspace root path.
pub fn new(manifest: Manifest, workspace_root: PathBuf) -> Self {
Self { manifest, workspace_root }
}
/// Load from a manifest file, setting the workspace root to the manifest's directory.
pub fn from_manifest_file(manifest_path: &Path) -> BuildResult<Self> {
let manifest = Manifest::from_file(manifest_path)?;
let workspace_root = manifest_path
.parent()
.unwrap_or(manifest_path)
.to_path_buf();
Ok(Self { manifest, workspace_root })
}
// ── Build ─────────────────────────────────────────────────────────────────
/// Full build: resolve deps (skipped for now — no live registry), compile, produce artifact.
///
/// `target` overrides the manifest's `[build].target` setting.
pub async fn build(&self, target: Option<BuildTarget>) -> BuildResult<BuildOutput> {
let effective_target = target.unwrap_or(self.manifest.build.target.clone());
self.build_for_target(&effective_target, None).await
}
/// Build for all cross-compilation targets declared in `[cross]`.
pub async fn build_all_targets(
&self,
) -> BuildResult<Vec<(CrossTarget, BuildOutput)>> {
let mut results = Vec::new();
for cross_target in &self.manifest.cross.targets {
let build_target = self.manifest.build.target.clone();
let output = self.build_for_target(&build_target, Some(cross_target)).await?;
results.push((cross_target.clone(), output));
}
Ok(results)
}
async fn build_for_target(
&self,
build_target: &BuildTarget,
cross_target: Option<&CrossTarget>,
) -> BuildResult<BuildOutput> {
let start = Instant::now();
// Locate entry point
let entry = self.workspace_root.join(&self.manifest.build.entry);
if !entry.exists() {
return Err(BuildError::EntryNotFound(entry.display().to_string()));
}
// Check incremental cache
let mut cache = BuildCache::load(&self.workspace_root);
let rel_entry = self
.manifest
.build
.entry
.to_string_lossy()
.to_string();
let current_hash = BuildCache::hash_file(&entry)?;
let is_cached = cache.is_up_to_date(&rel_entry, &current_hash);
// Build output path
let output_dir = self.workspace_root.join(&self.manifest.build.output);
std::fs::create_dir_all(&output_dir)?;
let artifact_name = artifact_name(
&self.manifest.package.name,
build_target,
cross_target,
);
let artifact_path = output_dir.join(&artifact_name);
if is_cached && artifact_path.exists() {
let size_bytes = std::fs::metadata(&artifact_path)?.len();
return Ok(BuildOutput {
artifact_path,
target: build_target.clone(),
cross_target: cross_target.cloned(),
sealed: matches!(build_target, BuildTarget::Prod),
size_bytes,
compile_time_ms: start.elapsed().as_millis() as u64,
});
}
// Read source
let source = std::fs::read_to_string(&entry)?;
// Build seal config for prod builds
let seal_config = self.build_seal_config()?;
// Compile
let compiler_target = match build_target {
BuildTarget::Debug => Target::Debug,
BuildTarget::Release => Target::Release,
BuildTarget::Prod => Target::Prod,
};
let opts = CompilerOptions {
target: compiler_target,
output_path: artifact_path.clone(),
source_path: entry.clone(),
engram_db_path: None,
seal_config,
};
let output = Compiler::compile(&source, opts)?;
// Emit diagnostics
for diag in &output.diagnostics {
eprintln!("warning: {diag}");
}
// Write artifact
std::fs::write(&artifact_path, &output.artifact)?;
// Annotate artifact with cross-target triple (stub — in LLVM backend this
// selects the code generation target).
if let Some(ct) = cross_target {
let native = NativeTarget::from_cross(ct);
let annotation_path = artifact_path.with_extension("target");
std::fs::write(&annotation_path, native.triple())?;
}
// Update cache
cache.record(&rel_entry, &current_hash);
cache.save(&self.workspace_root)?;
let size_bytes = std::fs::metadata(&artifact_path)?.len();
let compile_time_ms = start.elapsed().as_millis() as u64;
Ok(BuildOutput {
artifact_path,
target: build_target.clone(),
cross_target: cross_target.cloned(),
sealed: output.sealed,
size_bytes,
compile_time_ms,
})
}
// ── Dependencies ──────────────────────────────────────────────────────────
/// Resolve and download all registry dependencies.
pub async fn resolve_deps(&self) -> BuildResult<Vec<ResolvedDep>> {
let mut resolved = Vec::new();
for (name, dep) in &self.manifest.dependencies {
match dep {
el_manifest::Dependency::Path(path) => {
let abs_path = if path.is_absolute() {
path.clone()
} else {
self.workspace_root.join(path)
};
resolved.push(ResolvedDep {
name: name.clone(),
version: Version::new(0, 0, 0),
source: DepSource::Path(abs_path.clone()),
path: abs_path,
});
}
el_manifest::Dependency::VersionReq(_req) => {
// In a live environment this would call the registry.
// For now, record the dep with the local cache path.
let cache_base = el_registry::cache_dir().join(name);
resolved.push(ResolvedDep {
name: name.clone(),
version: Version::new(0, 0, 0), // placeholder until registry is live
source: DepSource::Registry(
el_registry::DEFAULT_REGISTRY_URL.to_string(),
),
path: cache_base,
});
}
el_manifest::Dependency::Registry { version: _version, registry } => {
let cache_base = el_registry::cache_dir().join(name);
resolved.push(ResolvedDep {
name: name.clone(),
version: Version::new(0, 0, 0),
source: DepSource::Registry(registry.clone()),
path: cache_base,
});
}
}
}
Ok(resolved)
}
// ── Test ──────────────────────────────────────────────────────────────────
/// Discover and run all test files.
pub async fn test(&self) -> BuildResult<TestReport> {
let src_root = self.workspace_root.join("src");
crate::test_runner::run_tests(&src_root, &self.workspace_root).await
}
// ── Format ────────────────────────────────────────────────────────────────
/// Format all source files (stub — delegates to `el-fmt` plugin when available).
pub fn fmt(&self) -> BuildResult<()> {
let sources = BuildCache::collect_sources(&self.workspace_root.join("src"));
for file in &sources {
// TODO: invoke el-fmt plugin or built-in formatter.
let _ = file;
}
println!("fmt: {} source file(s) checked", sources.len());
Ok(())
}
// ── Check ─────────────────────────────────────────────────────────────────
/// Type-check source files without producing artifacts.
pub fn check(&self) -> BuildResult<Vec<String>> {
let entry = self.workspace_root.join(&self.manifest.build.entry);
if !entry.exists() {
return Err(BuildError::EntryNotFound(entry.display().to_string()));
}
let source = std::fs::read_to_string(&entry)?;
let tokens = el_lexer::tokenize(&source)
.map_err(|e| el_compiler::CompileError::Lex(e))?;
let program = el_parser::parse(tokens, source.clone())
.map_err(|e| el_compiler::CompileError::Parse(e))?;
let mut checker = el_types::TypeChecker::with_builtins();
let diags = checker.check(&program);
Ok(diags.iter().map(|d| d.message.clone()).collect())
}
// ── Clean ─────────────────────────────────────────────────────────────────
/// Remove build artifacts and the build cache.
pub fn clean(&self) -> BuildResult<()> {
let output_dir = self.workspace_root.join(&self.manifest.build.output);
if output_dir.exists() {
std::fs::remove_dir_all(&output_dir)?;
}
let cache_dir = self.workspace_root.join(".el");
if cache_dir.exists() {
std::fs::remove_dir_all(&cache_dir)?;
}
println!("clean: removed build artifacts and cache");
Ok(())
}
// ── Helpers ───────────────────────────────────────────────────────────────
fn build_seal_config(&self) -> BuildResult<SealConfig> {
let binding = match &self.manifest.build.seal_key {
Some(SealKeySource::EnvVar(var)) => DeploymentBinding::EnvironmentKey(var.clone()),
Some(SealKeySource::File(_)) | Some(SealKeySource::Literal(_)) => {
// For file/literal keys, fall back to machine fingerprint in prod.
DeploymentBinding::None
}
None => DeploymentBinding::None,
};
Ok(SealConfig {
algorithm: SealAlgorithm::Aes256Gcm,
deployment_binding: binding,
})
}
}
fn artifact_name(
pkg_name: &str,
build_target: &BuildTarget,
cross_target: Option<&CrossTarget>,
) -> String {
let ext = match (build_target, cross_target) {
(BuildTarget::Prod, _) => ".sealed",
(_, Some(CrossTarget::Wasm32)) => ".wasm",
_ => ".elc",
};
if let Some(ct) = cross_target {
format!("{pkg_name}-{ct}{ext}")
} else {
format!("{pkg_name}{ext}")
}
}
// ── Tests ─────────────────────────────────────────────────────────────────────
#[cfg(test)]
mod tests {
use super::*;
use el_manifest::{BuildConfig, CrossConfig, PackageInfo};
use semver::Version;
use std::collections::HashMap;
use tempfile::TempDir;
fn temp_dir() -> TempDir {
tempfile::TempDir::new().unwrap()
}
fn simple_manifest(dir: &Path) -> Manifest {
Manifest {
package: PackageInfo {
name: "test-pkg".to_string(),
version: Version::new(0, 1, 0),
description: None,
authors: vec![],
license: None,
edition: "2026".to_string(),
},
dependencies: HashMap::new(),
dev_dependencies: HashMap::new(),
build: BuildConfig {
target: BuildTarget::Debug,
entry: PathBuf::from("src/main.el"),
output: PathBuf::from("dist/"),
seal_key: None,
},
cross: CrossConfig { targets: vec![] },
plugins: HashMap::new(),
}
}
#[tokio::test]
async fn test_build_debug() {
let dir = temp_dir();
// Create entry file
let src = dir.path().join("src");
std::fs::create_dir(&src).unwrap();
std::fs::write(src.join("main.el"), b"let x: Int = 42").unwrap();
let manifest = simple_manifest(dir.path());
let bs = BuildSystem::new(manifest, dir.path().to_path_buf());
let output = bs.build(None).await.unwrap();
assert!(output.artifact_path.exists());
assert!(!output.sealed);
assert_eq!(output.target, BuildTarget::Debug);
assert!(output.size_bytes > 0);
}
#[tokio::test]
async fn test_build_incremental_skips_rebuild() {
let dir = temp_dir();
let src = dir.path().join("src");
std::fs::create_dir(&src).unwrap();
std::fs::write(src.join("main.el"), b"let x: Int = 1").unwrap();
let manifest = simple_manifest(dir.path());
let bs = BuildSystem::new(manifest, dir.path().to_path_buf());
let out1 = bs.build(None).await.unwrap();
let t1 = out1.compile_time_ms;
let out2 = bs.build(None).await.unwrap();
// Second build should be very fast (cache hit)
assert_eq!(out1.artifact_path, out2.artifact_path);
}
#[tokio::test]
async fn test_build_missing_entry_errors() {
let dir = temp_dir();
let manifest = simple_manifest(dir.path());
let bs = BuildSystem::new(manifest, dir.path().to_path_buf());
let err = bs.build(None).await.unwrap_err();
assert!(matches!(err, BuildError::EntryNotFound(_)));
}
#[tokio::test]
async fn test_clean() {
let dir = temp_dir();
let src = dir.path().join("src");
std::fs::create_dir(&src).unwrap();
std::fs::write(src.join("main.el"), b"let x = 1").unwrap();
let manifest = simple_manifest(dir.path());
let bs = BuildSystem::new(manifest, dir.path().to_path_buf());
bs.build(None).await.unwrap();
bs.clean().unwrap();
let dist = dir.path().join("dist");
assert!(!dist.exists());
}
#[tokio::test]
async fn test_resolve_path_dep() {
let dir = temp_dir();
let mut manifest = simple_manifest(dir.path());
manifest.dependencies.insert(
"local-lib".to_string(),
el_manifest::Dependency::Path(PathBuf::from("../local-lib")),
);
let bs = BuildSystem::new(manifest, dir.path().to_path_buf());
let deps = bs.resolve_deps().await.unwrap();
assert_eq!(deps.len(), 1);
assert_eq!(deps[0].name, "local-lib");
assert!(matches!(deps[0].source, DepSource::Path(_)));
}
#[test]
fn test_artifact_name_debug() {
let name = artifact_name("my-pkg", &BuildTarget::Debug, None);
assert_eq!(name, "my-pkg.elc");
}
#[test]
fn test_artifact_name_prod() {
let name = artifact_name("my-pkg", &BuildTarget::Prod, None);
assert_eq!(name, "my-pkg.sealed");
}
#[test]
fn test_artifact_name_wasm_cross() {
let name = artifact_name("my-pkg", &BuildTarget::Debug, Some(&CrossTarget::Wasm32));
assert_eq!(name, "my-pkg-wasm32.wasm");
}
#[test]
fn test_artifact_name_linux_cross() {
let name = artifact_name("my-pkg", &BuildTarget::Release, Some(&CrossTarget::X86_64Linux));
assert_eq!(name, "my-pkg-x86_64-linux.elc");
}
}
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//! Incremental build cache.
//!
//! Stores BLAKE3 hashes of source files in `.el/build-cache.json` so the
//! build system can skip recompiling files that haven't changed.
use std::collections::HashMap;
use std::path::{Path, PathBuf};
use serde::{Deserialize, Serialize};
/// The on-disk structure of the build cache.
#[derive(Debug, Default, Clone, Serialize, Deserialize)]
pub struct BuildCache {
/// Map of file path (relative to workspace root) → BLAKE3 hex hash.
pub file_hashes: HashMap<String, String>,
}
impl BuildCache {
/// Load the build cache from `.el/build-cache.json`.
///
/// Returns an empty cache if the file doesn't exist yet.
pub fn load(workspace_root: &Path) -> Self {
let path = cache_path(workspace_root);
if !path.exists() {
return Self::default();
}
let text = std::fs::read_to_string(&path).unwrap_or_default();
serde_json::from_str(&text).unwrap_or_default()
}
/// Persist the cache back to disk.
pub fn save(&self, workspace_root: &Path) -> Result<(), std::io::Error> {
let path = cache_path(workspace_root);
if let Some(parent) = path.parent() {
std::fs::create_dir_all(parent)?;
}
let json = serde_json::to_string_pretty(self)?;
std::fs::write(&path, json)
}
/// Hash a single file and return the BLAKE3 hex string.
pub fn hash_file(path: &Path) -> Result<String, std::io::Error> {
let bytes = std::fs::read(path)?;
Ok(hex_encode(blake3::hash(&bytes).as_bytes()))
}
/// Returns `true` if the file's current hash matches the cached hash.
pub fn is_up_to_date(&self, rel_path: &str, current_hash: &str) -> bool {
self.file_hashes
.get(rel_path)
.map(|cached| cached == current_hash)
.unwrap_or(false)
}
/// Update the cached hash for a file.
pub fn record(&mut self, rel_path: impl Into<String>, hash: impl Into<String>) {
self.file_hashes.insert(rel_path.into(), hash.into());
}
/// Collect all `.el` source files under a directory recursively.
pub fn collect_sources(root: &Path) -> Vec<PathBuf> {
let mut sources = Vec::new();
collect_el_files(root, &mut sources);
sources.sort();
sources
}
}
fn cache_path(workspace_root: &Path) -> PathBuf {
workspace_root.join(".el").join("build-cache.json")
}
fn collect_el_files(dir: &Path, out: &mut Vec<PathBuf>) {
let Ok(entries) = std::fs::read_dir(dir) else {
return;
};
for entry in entries.flatten() {
let path = entry.path();
if path.is_dir() {
// Skip hidden dirs and build outputs
let name = path.file_name().unwrap_or_default().to_string_lossy();
if name.starts_with('.') || name == "dist" || name == "target" {
continue;
}
collect_el_files(&path, out);
} else if path.extension().map(|e| e == "el").unwrap_or(false) {
out.push(path);
}
}
}
fn hex_encode(bytes: &[u8]) -> String {
bytes.iter().map(|b| format!("{b:02x}")).collect()
}
// ── Tests ─────────────────────────────────────────────────────────────────────
#[cfg(test)]
mod tests {
use super::*;
use std::io::Write;
use tempfile::TempDir;
fn temp_dir() -> TempDir {
tempfile::TempDir::new().unwrap()
}
#[test]
fn test_cache_empty_by_default() {
let dir = temp_dir();
let cache = BuildCache::load(dir.path());
assert!(cache.file_hashes.is_empty());
}
#[test]
fn test_cache_save_and_load() {
let dir = temp_dir();
let mut cache = BuildCache::default();
cache.record("src/main.el", "abc123");
cache.save(dir.path()).unwrap();
let loaded = BuildCache::load(dir.path());
assert_eq!(loaded.file_hashes.get("src/main.el").map(|s| s.as_str()), Some("abc123"));
}
#[test]
fn test_is_up_to_date() {
let mut cache = BuildCache::default();
cache.record("src/main.el", "deadbeef");
assert!(cache.is_up_to_date("src/main.el", "deadbeef"));
assert!(!cache.is_up_to_date("src/main.el", "different"));
assert!(!cache.is_up_to_date("src/other.el", "deadbeef"));
}
#[test]
fn test_hash_file() {
let dir = temp_dir();
let path = dir.path().join("test.el");
std::fs::write(&path, b"let x = 1").unwrap();
let hash1 = BuildCache::hash_file(&path).unwrap();
let hash2 = BuildCache::hash_file(&path).unwrap();
assert_eq!(hash1, hash2); // deterministic
std::fs::write(&path, b"let x = 2").unwrap();
let hash3 = BuildCache::hash_file(&path).unwrap();
assert_ne!(hash1, hash3); // different content → different hash
}
#[test]
fn test_collect_sources() {
let dir = temp_dir();
let src = dir.path().join("src");
std::fs::create_dir(&src).unwrap();
std::fs::write(src.join("main.el"), b"fn main() {}").unwrap();
std::fs::write(src.join("lib.el"), b"fn helper() {}").unwrap();
std::fs::write(src.join("README.md"), b"# README").unwrap();
let sources = BuildCache::collect_sources(dir.path());
assert_eq!(sources.len(), 2);
assert!(sources.iter().any(|p| p.file_name().unwrap() == "main.el"));
assert!(sources.iter().any(|p| p.file_name().unwrap() == "lib.el"));
}
}
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//! Build system error types.
use thiserror::Error;
#[derive(Debug, Error)]
pub enum BuildError {
#[error("io error: {0}")]
Io(#[from] std::io::Error),
#[error("manifest error: {0}")]
Manifest(#[from] el_manifest::ManifestError),
#[error("registry error: {0}")]
Registry(#[from] el_registry::RegistryError),
#[error("compile error: {0}")]
Compile(#[from] el_compiler::CompileError),
#[error("json error: {0}")]
Json(#[from] serde_json::Error),
#[error("plugin error: {0}")]
Plugin(#[from] crate::plugin::PluginError),
#[error("entry point not found: {0}")]
EntryNotFound(String),
#[error("build failed: {0}")]
BuildFailed(String),
#[error("test failed: {count} test(s) failed")]
TestsFailed { count: usize },
}
pub type BuildResult<T> = Result<T, BuildError>;
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//! el-build — Build orchestrator for the Engram language toolchain.
//!
//! Reads `el.toml`, resolves dependencies, compiles source files, and produces
//! artifacts. Supports incremental builds via BLAKE3 file hashes stored in
//! `.el/build-cache.json`.
//!
//! # Usage
//! ```rust,no_run
//! use el_build::BuildSystem;
//! use el_manifest::Manifest;
//!
//! # async fn example() -> Result<(), Box<dyn std::error::Error>> {
//! let manifest = Manifest::from_file(std::path::Path::new("el.toml"))?;
//! let bs = BuildSystem::new(manifest, std::env::current_dir()?);
//! let output = bs.build(None).await?;
//! println!("artifact: {}", output.artifact_path.display());
//! # Ok(())
//! # }
//! ```
mod build;
mod cache;
mod error;
mod plugin;
mod test_runner;
pub use build::{BuildOutput, BuildSystem, DepSource, ResolvedDep, TestReport};
pub use cache::BuildCache;
pub use error::{BuildError, BuildResult};
pub use plugin::{CompilerPlugin, PluginError, PluginRegistry};
+275
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@@ -0,0 +1,275 @@
//! Compiler plugin system.
//!
//! Plugins are Rust dynamic libraries (`.dylib` / `.so`) that implement the
//! [`CompilerPlugin`] trait. They are loaded at compile time and receive hooks
//! at each stage of the compilation pipeline.
//!
//! # Lifecycle hooks
//! 1. `on_ast` — called after parsing, before type checking
//! 2. `on_typed_ast` — called after type checking, before codegen
//! 3. `on_bytecode` — called after codegen, before sealing
//!
//! # Writing a plugin
//! ```rust,ignore
//! use el_build::CompilerPlugin;
//! use el_parser::Program;
//! use el_types::TypeEnv;
//!
//! pub struct MyPlugin;
//!
//! impl CompilerPlugin for MyPlugin {
//! fn name(&self) -> &str { "my-plugin" }
//! fn version(&self) -> &str { "0.1.0" }
//! fn on_ast(&self, _program: &mut Program) -> Result<(), el_build::PluginError> { Ok(()) }
//! fn on_typed_ast(&self, _program: &Program, _types: &TypeEnv) -> Result<(), el_build::PluginError> { Ok(()) }
//! fn on_bytecode(&self, _bytecode: &mut Vec<u8>) -> Result<(), el_build::PluginError> { Ok(()) }
//! }
//! ```
use std::path::Path;
use thiserror::Error;
use el_manifest::Manifest;
// ── Error ─────────────────────────────────────────────────────────────────────
#[derive(Debug, Error)]
pub enum PluginError {
#[error("plugin '{name}' ast hook failed: {reason}")]
AstHookFailed { name: String, reason: String },
#[error("plugin '{name}' typed-ast hook failed: {reason}")]
TypedAstHookFailed { name: String, reason: String },
#[error("plugin '{name}' bytecode hook failed: {reason}")]
BytecodeHookFailed { name: String, reason: String },
#[error("plugin '{name}' not found in {dir}")]
NotFound { name: String, dir: String },
#[error("plugin loading is not supported on this platform")]
PlatformUnsupported,
}
// ── Plugin trait ──────────────────────────────────────────────────────────────
/// The interface that all compiler plugins must implement.
///
/// Plugins receive three optional hooks during compilation. Each hook may
/// mutate the data it receives (AST, bytecode) or read it for analysis.
pub trait CompilerPlugin: Send + Sync {
/// The plugin's canonical name (matches its key in `el.toml [plugins]`).
fn name(&self) -> &str;
/// The plugin's version string.
fn version(&self) -> &str;
/// Called after parsing, before type checking.
///
/// Implementations may add synthetic AST nodes, remove nodes, or
/// record observations. Mutation is allowed.
fn on_ast(&self, program: &mut el_parser::Program) -> Result<(), PluginError>;
/// Called after type checking, before code generation.
///
/// The AST is immutable at this stage. Implementations may inspect the
/// resolved types for documentation generation, linting, etc.
fn on_typed_ast(
&self,
program: &el_parser::Program,
types: &el_types::TypeEnv,
) -> Result<(), PluginError>;
/// Called after code generation, before sealing.
///
/// Implementations may inspect or transform the raw bytecode bytes.
fn on_bytecode(&self, bytecode: &mut Vec<u8>) -> Result<(), PluginError>;
}
// ── Registry ──────────────────────────────────────────────────────────────────
/// A registry of loaded compiler plugins.
pub struct PluginRegistry {
plugins: Vec<Box<dyn CompilerPlugin>>,
}
impl PluginRegistry {
/// Create an empty registry.
pub fn new() -> Self {
Self {
plugins: Vec::new(),
}
}
/// Register a plugin directly (used in tests and for built-in plugins).
pub fn register(&mut self, plugin: Box<dyn CompilerPlugin>) {
self.plugins.push(plugin);
}
/// Load all plugins listed in the manifest's `[plugins]` section.
///
/// Plugins are expected to be `.dylib` (macOS) / `.so` (Linux) files
/// in `plugin_dir`. Dynamic loading is marked as a TODO — for now, this
/// is a no-op stub that validates the plugin manifest entries.
pub fn load_from_manifest(
&mut self,
manifest: &Manifest,
plugin_dir: &Path,
) -> Result<(), PluginError> {
for (name, _version) in &manifest.plugins {
// TODO(LLVM backend): use `libloading` crate to dlopen the .dylib/.so,
// look up the `engram_plugin_init` symbol, call it, and register the
// returned Box<dyn CompilerPlugin>.
//
// Extension point:
// let lib = unsafe { libloading::Library::new(dylib_path) }?;
// let init: Symbol<fn() -> Box<dyn CompilerPlugin>> =
// unsafe { lib.get(b"engram_plugin_init") }?;
// self.plugins.push(init());
let dylib_name = if cfg!(target_os = "macos") {
format!("lib{name}.dylib")
} else if cfg!(target_os = "windows") {
format!("{name}.dll")
} else {
format!("lib{name}.so")
};
let dylib_path = plugin_dir.join(&dylib_name);
if !dylib_path.exists() {
// Not treating missing plugins as fatal during the stub phase.
// In production, this would be an error.
eprintln!(
"warning: plugin '{name}' not found at {} (dynamic loading is a TODO)",
dylib_path.display()
);
}
}
Ok(())
}
/// Run the `on_ast` hook for all registered plugins.
pub fn run_ast_hooks(&self, program: &mut el_parser::Program) -> Result<(), PluginError> {
for plugin in &self.plugins {
plugin.on_ast(program)?;
}
Ok(())
}
/// Run the `on_typed_ast` hook for all registered plugins.
pub fn run_typed_hooks(
&self,
program: &el_parser::Program,
types: &el_types::TypeEnv,
) -> Result<(), PluginError> {
for plugin in &self.plugins {
plugin.on_typed_ast(program, types)?;
}
Ok(())
}
/// Run the `on_bytecode` hook for all registered plugins.
pub fn run_bytecode_hooks(&self, bytecode: &mut Vec<u8>) -> Result<(), PluginError> {
for plugin in &self.plugins {
plugin.on_bytecode(bytecode)?;
}
Ok(())
}
/// Number of plugins currently registered.
pub fn len(&self) -> usize {
self.plugins.len()
}
/// Whether no plugins are registered.
pub fn is_empty(&self) -> bool {
self.plugins.is_empty()
}
}
impl Default for PluginRegistry {
fn default() -> Self {
Self::new()
}
}
// ── Tests ─────────────────────────────────────────────────────────────────────
#[cfg(test)]
mod tests {
use super::*;
/// A no-op test plugin.
struct NopPlugin;
impl CompilerPlugin for NopPlugin {
fn name(&self) -> &str { "nop-plugin" }
fn version(&self) -> &str { "0.1.0" }
fn on_ast(&self, _program: &mut el_parser::Program) -> Result<(), PluginError> { Ok(()) }
fn on_typed_ast(&self, _p: &el_parser::Program, _t: &el_types::TypeEnv) -> Result<(), PluginError> { Ok(()) }
fn on_bytecode(&self, _b: &mut Vec<u8>) -> Result<(), PluginError> { Ok(()) }
}
/// A plugin that appends a byte to the bytecode (to verify mutation).
struct MutatingPlugin;
impl CompilerPlugin for MutatingPlugin {
fn name(&self) -> &str { "mutating-plugin" }
fn version(&self) -> &str { "1.0.0" }
fn on_ast(&self, _program: &mut el_parser::Program) -> Result<(), PluginError> { Ok(()) }
fn on_typed_ast(&self, _p: &el_parser::Program, _t: &el_types::TypeEnv) -> Result<(), PluginError> { Ok(()) }
fn on_bytecode(&self, bytecode: &mut Vec<u8>) -> Result<(), PluginError> {
bytecode.push(0xFF); // marker byte
Ok(())
}
}
#[test]
fn test_empty_registry() {
let reg = PluginRegistry::new();
assert!(reg.is_empty());
assert_eq!(reg.len(), 0);
}
#[test]
fn test_register_plugin() {
let mut reg = PluginRegistry::new();
reg.register(Box::new(NopPlugin));
assert_eq!(reg.len(), 1);
assert!(!reg.is_empty());
}
#[test]
fn test_bytecode_hook_mutates() {
let mut reg = PluginRegistry::new();
reg.register(Box::new(MutatingPlugin));
let mut bytecode = vec![0x01, 0x02, 0x03];
reg.run_bytecode_hooks(&mut bytecode).unwrap();
assert_eq!(bytecode.last(), Some(&0xFF));
assert_eq!(bytecode.len(), 4);
}
#[test]
fn test_multiple_plugins_run_in_order() {
let mut reg = PluginRegistry::new();
reg.register(Box::new(MutatingPlugin));
reg.register(Box::new(MutatingPlugin));
let mut bytecode = vec![0x01];
reg.run_bytecode_hooks(&mut bytecode).unwrap();
// Two MutatingPlugins → two 0xFF bytes appended
assert_eq!(bytecode, vec![0x01, 0xFF, 0xFF]);
}
#[test]
fn test_nop_plugin_hooks_succeed() {
let mut reg = PluginRegistry::new();
reg.register(Box::new(NopPlugin));
let mut bytecode = vec![0x00];
assert!(reg.run_bytecode_hooks(&mut bytecode).is_ok());
assert_eq!(bytecode.len(), 1); // NopPlugin does not mutate
}
}
+95
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@@ -0,0 +1,95 @@
//! Test runner — compiles and runs `*.test.el` / `*_test.el` files.
use std::path::Path;
use crate::build::TestReport;
use crate::error::BuildResult;
/// Discover and run all test files under `src_root`.
///
/// Test files must end in `.test.el` or `_test.el`.
/// This is a stub implementation — in the full toolchain the test files
/// are compiled to debug bytecode and run against the interpreter with
/// assertions captured.
pub async fn run_tests(src_root: &Path, workspace_root: &Path) -> BuildResult<TestReport> {
let test_files = discover_test_files(src_root);
let total = test_files.len();
let mut passed = 0usize;
let mut failed = 0usize;
let mut failures = Vec::new();
for file in &test_files {
let rel = file
.strip_prefix(workspace_root)
.unwrap_or(file)
.display()
.to_string();
let source = match std::fs::read_to_string(file) {
Ok(s) => s,
Err(e) => {
failures.push(format!("{rel}: io error: {e}"));
failed += 1;
continue;
}
};
// Compile to debug bytecode — if compilation fails, test fails.
let opts = el_compiler::CompilerOptions {
target: el_compiler::Target::Debug,
source_path: file.clone(),
..Default::default()
};
match el_compiler::Compiler::compile(&source, opts) {
Ok(output) => {
if output.diagnostics.iter().any(|d| d.contains("error")) {
failures.push(format!("{rel}: compile error"));
failed += 1;
} else {
passed += 1;
}
}
Err(e) => {
failures.push(format!("{rel}: {e}"));
failed += 1;
}
}
}
Ok(TestReport {
total,
passed,
failed,
failures,
})
}
fn discover_test_files(root: &Path) -> Vec<std::path::PathBuf> {
let mut files = Vec::new();
collect_test_files(root, &mut files);
files.sort();
files
}
fn collect_test_files(dir: &Path, out: &mut Vec<std::path::PathBuf>) {
let Ok(entries) = std::fs::read_dir(dir) else {
return;
};
for entry in entries.flatten() {
let path = entry.path();
if path.is_dir() {
let name = path.file_name().unwrap_or_default().to_string_lossy();
if !name.starts_with('.') && name != "dist" && name != "target" {
collect_test_files(&path, out);
}
} else {
let name = path.file_name().unwrap_or_default().to_string_lossy();
if (name.ends_with(".test.el") || name.ends_with("_test.el"))
&& path.extension().map(|e| e == "el").unwrap_or(false)
{
out.push(path);
}
}
}
}
+7 -1
View File
@@ -121,6 +121,9 @@ impl Codegen {
Stmt::TypeDef { .. } | Stmt::EnumDef { .. } => {
// Type and enum definitions are compile-time only; no runtime code.
}
// Test-related statements — skipped during normal compilation.
// The el-test crate walks the AST directly rather than running compiled bytecode.
Stmt::TestDef { .. } | Stmt::Seed(..) | Stmt::Assert(..) => {}
}
Ok(())
}
@@ -327,7 +330,10 @@ fn stmt_span(stmt: &Stmt) -> el_lexer::Span {
| Stmt::Expr(_, span)
| Stmt::FnDef { span, .. }
| Stmt::TypeDef { span, .. }
| Stmt::EnumDef { span, .. } => *span,
| Stmt::EnumDef { span, .. }
| Stmt::TestDef { span, .. }
| Stmt::Seed(_, span)
| Stmt::Assert(_, span) => *span,
}
}
+279
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@@ -0,0 +1,279 @@
//! Step-debugger infrastructure for the Engram VM.
//!
//! The [`Debugger`] is attached to the bytecode interpreter and emits
//! [`DebugEvent`]s as execution proceeds. IDEs and `el debug` consume these
//! events to show variable state, call stack, and current source line.
use std::collections::{HashMap, HashSet};
use crate::bytecode::Value;
/// A single frame on the call stack.
#[derive(Debug, Clone)]
pub struct StackFrame {
pub function_name: String,
pub source_file: String,
pub line: u32,
pub col: u32,
}
/// Controls how the debugger advances through bytecode.
#[derive(Debug, Clone, PartialEq)]
pub enum StepMode {
/// Run freely until the next breakpoint.
Run,
/// Execute exactly one statement, then pause.
StepOver,
/// Step into function calls (pause on first instruction of callee).
StepInto,
/// Run until the current frame returns, then pause.
StepOut,
}
/// An event emitted by the VM when in debug mode.
#[derive(Debug, Clone)]
pub enum DebugEvent {
/// Execution paused at a breakpoint.
Breakpoint {
offset: usize,
frame: StackFrame,
},
/// Execution paused after a single step.
Step {
frame: StackFrame,
locals: HashMap<String, Value>,
},
/// A function returned a value.
Return {
value: Value,
},
/// The VM encountered a runtime error.
Error {
message: String,
frame: StackFrame,
},
}
/// The debugger attached to a running VM instance.
///
/// In debug mode the interpreter queries [`should_pause`] before each
/// instruction. If it returns `true`, execution stops and a [`DebugEvent`]
/// is emitted to the registered handler.
pub struct Debugger {
/// Bytecode offsets at which to pause execution.
pub breakpoints: HashSet<usize>,
/// Current stepping mode.
pub step_mode: StepMode,
/// Simulated call stack (maintained by the interpreter).
pub call_stack: Vec<StackFrame>,
/// Snapshot of local variables at the last pause.
pub locals: HashMap<String, Value>,
/// Events emitted since the last [`drain_events`] call.
events: Vec<DebugEvent>,
}
impl Debugger {
/// Create a new debugger that will break on the very first instruction.
pub fn new() -> Self {
Self {
breakpoints: HashSet::new(),
step_mode: StepMode::StepOver,
call_stack: vec![StackFrame {
function_name: "<top>".into(),
source_file: "<unknown>".into(),
line: 1,
col: 1,
}],
locals: HashMap::new(),
events: Vec::new(),
}
}
/// Add a breakpoint at a bytecode offset.
pub fn add_breakpoint(&mut self, offset: usize) {
self.breakpoints.insert(offset);
}
/// Remove a breakpoint.
pub fn remove_breakpoint(&mut self, offset: usize) {
self.breakpoints.remove(&offset);
}
/// Returns `true` if the debugger should pause at `offset`.
pub fn should_pause(&self, offset: usize) -> bool {
if self.breakpoints.contains(&offset) {
return true;
}
matches!(self.step_mode, StepMode::StepOver | StepMode::StepInto)
}
/// Called by the interpreter when it pauses at `offset`.
pub fn on_pause(&mut self, offset: usize, locals: HashMap<String, Value>) {
self.locals = locals.clone();
let frame = self.current_frame_cloned();
if self.breakpoints.contains(&offset) {
self.events.push(DebugEvent::Breakpoint { offset, frame });
} else {
self.events.push(DebugEvent::Step { frame, locals });
}
}
/// Called when a function is entered.
pub fn push_frame(&mut self, function_name: String, source_file: String) {
self.call_stack.push(StackFrame {
function_name,
source_file,
line: 1,
col: 1,
});
}
/// Called when a function returns.
pub fn pop_frame(&mut self, value: Value) {
self.call_stack.pop();
self.events.push(DebugEvent::Return { value });
}
/// Record a runtime error.
pub fn on_error(&mut self, message: String) {
let frame = self.current_frame_cloned();
self.events.push(DebugEvent::Error { message, frame });
}
/// Update the source position of the top frame.
pub fn update_position(&mut self, line: u32, col: u32) {
if let Some(frame) = self.call_stack.last_mut() {
frame.line = line;
frame.col = col;
}
}
/// Drain and return all queued events.
pub fn drain_events(&mut self) -> Vec<DebugEvent> {
std::mem::take(&mut self.events)
}
/// Current frame clone, or a sentinel if the stack is empty.
fn current_frame_cloned(&self) -> StackFrame {
self.call_stack.last().cloned().unwrap_or_else(|| StackFrame {
function_name: String::new(),
source_file: String::new(),
line: 0,
col: 0,
})
}
}
impl Default for Debugger {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_breakpoint_triggers_pause() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::Run; // not stepping — only breakpoints
dbg.add_breakpoint(5);
assert!(!dbg.should_pause(0));
assert!(!dbg.should_pause(4));
assert!(dbg.should_pause(5));
assert!(!dbg.should_pause(6));
}
#[test]
fn test_step_over_always_pauses() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::StepOver;
assert!(dbg.should_pause(0));
assert!(dbg.should_pause(99));
}
#[test]
fn test_step_into_always_pauses() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::StepInto;
assert!(dbg.should_pause(0));
}
#[test]
fn test_run_mode_no_pause_without_breakpoint() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::Run;
assert!(!dbg.should_pause(42));
}
#[test]
fn test_remove_breakpoint() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::Run;
dbg.add_breakpoint(10);
assert!(dbg.should_pause(10));
dbg.remove_breakpoint(10);
assert!(!dbg.should_pause(10));
}
#[test]
fn test_on_pause_emits_step_event() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::StepOver;
let mut locals = HashMap::new();
locals.insert("x".into(), Value::Int(42));
dbg.on_pause(0, locals.clone());
let events = dbg.drain_events();
assert_eq!(events.len(), 1);
assert!(matches!(events[0], DebugEvent::Step { .. }));
}
#[test]
fn test_on_pause_at_breakpoint_emits_breakpoint_event() {
let mut dbg = Debugger::new();
dbg.step_mode = StepMode::Run;
dbg.add_breakpoint(7);
dbg.on_pause(7, HashMap::new());
let events = dbg.drain_events();
assert_eq!(events.len(), 1);
assert!(matches!(events[0], DebugEvent::Breakpoint { offset: 7, .. }));
}
#[test]
fn test_push_pop_frame() {
let mut dbg = Debugger::new();
dbg.push_frame("my_fn".into(), "test.el".into());
assert_eq!(dbg.call_stack.len(), 2);
assert_eq!(dbg.call_stack[1].function_name, "my_fn");
dbg.pop_frame(Value::Int(0));
assert_eq!(dbg.call_stack.len(), 1);
let events = dbg.drain_events();
assert!(matches!(events[0], DebugEvent::Return { .. }));
}
#[test]
fn test_on_error_emits_error_event() {
let mut dbg = Debugger::new();
dbg.on_error("division by zero".into());
let events = dbg.drain_events();
assert!(matches!(&events[0], DebugEvent::Error { message, .. } if message == "division by zero"));
}
#[test]
fn test_drain_clears_events() {
let mut dbg = Debugger::new();
dbg.on_error("oops".into());
let _ = dbg.drain_events();
let events2 = dbg.drain_events();
assert!(events2.is_empty());
}
#[test]
fn test_update_position() {
let mut dbg = Debugger::new();
dbg.update_position(10, 5);
assert_eq!(dbg.call_stack[0].line, 10);
assert_eq!(dbg.call_stack[0].col, 5);
}
}
+2
View File
@@ -24,10 +24,12 @@
mod bytecode;
mod codegen;
mod compiler;
mod debugger;
mod error;
mod source_map;
pub use bytecode::{Bytecode, Value};
pub use compiler::{CompileOutput, Compiler, CompilerOptions, Target};
pub use debugger::{DebugEvent, Debugger, StackFrame, StepMode};
pub use error::{CompileError, CompileResult};
pub use source_map::SourceMap;
+4
View File
@@ -347,6 +347,10 @@ fn keyword_or_ident(s: String) -> Token {
"else" => Token::Else,
"for" => Token::For,
"in" => Token::In,
"test" => Token::Test,
"seed" => Token::Seed,
"assert" => Token::Assert,
"target" => Token::Target,
"true" => Token::BoolLiteral(true),
"false" => Token::BoolLiteral(false),
_ => Token::Ident(s),
+12
View File
@@ -73,6 +73,14 @@ pub enum Token {
For,
/// `in`
In,
/// `test` — test block definition
Test,
/// `seed` — graph seeding statement inside a test
Seed,
/// `assert` — assertion statement inside a test
Assert,
/// `target` — test target annotation (`target: e2e`)
Target,
/// `true` / `false`
BoolLiteral(bool),
@@ -163,6 +171,10 @@ impl std::fmt::Display for Token {
Token::Else => write!(f, "else"),
Token::For => write!(f, "for"),
Token::In => write!(f, "in"),
Token::Test => write!(f, "test"),
Token::Seed => write!(f, "seed"),
Token::Assert => write!(f, "assert"),
Token::Target => write!(f, "target"),
Token::BoolLiteral(b) => write!(f, "{b}"),
Token::IntLiteral(n) => write!(f, "{n}"),
Token::FloatLiteral(n) => write!(f, "{n}"),
+15
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@@ -0,0 +1,15 @@
[package]
name = "el-manifest"
description = "el.toml manifest parser for the Engram language package system"
version.workspace = true
edition.workspace = true
license.workspace = true
[dependencies]
serde = { workspace = true }
serde_json = { workspace = true }
thiserror = { workspace = true }
toml = "0.8"
semver = { version = "1", features = ["serde"] }
[dev-dependencies]
+39
View File
@@ -0,0 +1,39 @@
//! Manifest error types.
use thiserror::Error;
#[derive(Debug, Error)]
pub enum ManifestError {
#[error("io error: {0}")]
Io(#[from] std::io::Error),
#[error("toml parse error: {0}")]
Toml(#[from] toml::de::Error),
#[error("semver parse error for '{field}': {source}")]
Semver {
field: String,
#[source]
source: semver::Error,
},
#[error("missing required field: {0}")]
MissingField(String),
#[error("invalid value for '{field}': {reason}")]
InvalidValue { field: String, reason: String },
#[error("el.toml not found (searched from {0})")]
NotFound(String),
#[error("invalid cross target '{0}': use x86_64-linux, aarch64-linux, x86_64-macos, aarch64-macos, wasm32")]
InvalidCrossTarget(String),
#[error("invalid build target '{0}': use debug, release, prod")]
InvalidBuildTarget(String),
#[error("invalid seal key source '{0}': use env:VAR, file:path, or literal")]
InvalidSealKeySource(String),
}
pub type ManifestResult<T> = Result<T, ManifestError>;
+28
View File
@@ -0,0 +1,28 @@
//! el-manifest — `el.toml` project manifest parser.
//!
//! Every Engram project has an `el.toml` at its root. This crate defines the
//! manifest data model and parses it from TOML text.
//!
//! # Quick start
//! ```rust
//! use el_manifest::Manifest;
//!
//! let toml = r#"
//! [package]
//! name = "my-service"
//! version = "0.1.0"
//! edition = "2026"
//! "#;
//! let manifest = Manifest::from_str(toml).unwrap();
//! assert_eq!(manifest.package.name, "my-service");
//! ```
mod error;
mod manifest;
mod parse;
pub use error::{ManifestError, ManifestResult};
pub use manifest::{
BuildConfig, BuildTarget, CrossConfig, CrossTarget, Dependency, Manifest, NativeTarget,
PackageInfo, SealKeySource,
};
+378
View File
@@ -0,0 +1,378 @@
//! Core data model for the `el.toml` manifest.
use std::collections::HashMap;
use std::path::PathBuf;
use semver::{Version, VersionReq};
use serde::{Deserialize, Serialize};
// ── Package info ──────────────────────────────────────────────────────────────
/// Metadata about the package itself (`[package]` section).
#[derive(Debug, Clone, PartialEq)]
pub struct PackageInfo {
pub name: String,
pub version: Version,
pub description: Option<String>,
pub authors: Vec<String>,
pub license: Option<String>,
/// Language edition, e.g. "2026".
pub edition: String,
}
// ── Dependencies ──────────────────────────────────────────────────────────────
/// A single dependency specifier.
#[derive(Debug, Clone, PartialEq)]
pub enum Dependency {
/// A bare semver version requirement string (`"1.2"`, `"^0.8.1"`).
VersionReq(VersionReq),
/// A path-local dependency (`{ path = "../some-local" }`).
Path(PathBuf),
/// A registry package with an explicit registry URL.
Registry {
version: VersionReq,
registry: String,
},
}
impl Dependency {
/// Returns the version requirement if this is a registry / version dep.
pub fn version_req(&self) -> Option<&VersionReq> {
match self {
Dependency::VersionReq(req) => Some(req),
Dependency::Registry { version, .. } => Some(version),
Dependency::Path(_) => None,
}
}
/// Returns the local path if this is a path dependency.
pub fn local_path(&self) -> Option<&PathBuf> {
match self {
Dependency::Path(p) => Some(p),
_ => None,
}
}
}
// ── Build config ──────────────────────────────────────────────────────────────
/// The three compilation targets supported by the Engram toolchain.
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum BuildTarget {
Debug,
Release,
Prod,
}
impl BuildTarget {
pub fn as_str(&self) -> &'static str {
match self {
BuildTarget::Debug => "debug",
BuildTarget::Release => "release",
BuildTarget::Prod => "prod",
}
}
}
impl std::fmt::Display for BuildTarget {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.as_str())
}
}
impl std::str::FromStr for BuildTarget {
type Err = crate::ManifestError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"debug" => Ok(BuildTarget::Debug),
"release" => Ok(BuildTarget::Release),
"prod" => Ok(BuildTarget::Prod),
other => Err(crate::ManifestError::InvalidBuildTarget(other.to_string())),
}
}
}
/// Where to read the sealing key from.
#[derive(Debug, Clone, PartialEq)]
pub enum SealKeySource {
/// `env:VAR_NAME` — read from an environment variable at build time.
EnvVar(String),
/// `file:path/to/key` — read raw bytes from a file.
File(PathBuf),
/// A literal key value — for development/testing only.
Literal(String),
}
impl SealKeySource {
/// Parse from the `el.toml` string representation.
pub fn parse(s: &str) -> Result<Self, crate::ManifestError> {
if let Some(var) = s.strip_prefix("env:") {
Ok(SealKeySource::EnvVar(var.to_string()))
} else if let Some(path) = s.strip_prefix("file:") {
Ok(SealKeySource::File(PathBuf::from(path)))
} else if s.is_empty() {
Err(crate::ManifestError::InvalidSealKeySource(s.to_string()))
} else {
Ok(SealKeySource::Literal(s.to_string()))
}
}
/// Resolve the key bytes at runtime.
pub fn resolve(&self) -> Result<Vec<u8>, crate::ManifestError> {
match self {
SealKeySource::EnvVar(var) => {
std::env::var(var)
.map(|v| v.into_bytes())
.map_err(|_| crate::ManifestError::InvalidValue {
field: format!("env:{var}"),
reason: "environment variable not set".to_string(),
})
}
SealKeySource::File(path) => {
std::fs::read(path).map_err(crate::ManifestError::Io)
}
SealKeySource::Literal(s) => Ok(s.as_bytes().to_vec()),
}
}
}
/// The `[build]` section.
#[derive(Debug, Clone, PartialEq)]
pub struct BuildConfig {
pub target: BuildTarget,
pub entry: PathBuf,
pub output: PathBuf,
pub seal_key: Option<SealKeySource>,
}
impl Default for BuildConfig {
fn default() -> Self {
Self {
target: BuildTarget::Debug,
entry: PathBuf::from("src/main.el"),
output: PathBuf::from("dist/"),
seal_key: None,
}
}
}
// ── Cross-compilation ─────────────────────────────────────────────────────────
/// A native target triple for cross-compilation.
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "kebab-case")]
pub enum CrossTarget {
#[serde(rename = "x86_64-linux")]
X86_64Linux,
#[serde(rename = "aarch64-linux")]
Aarch64Linux,
#[serde(rename = "x86_64-macos")]
X86_64Macos,
#[serde(rename = "aarch64-macos")]
Aarch64Macos,
#[serde(rename = "wasm32")]
Wasm32,
}
impl CrossTarget {
/// Parse from the string used in `el.toml`.
pub fn parse(s: &str) -> Result<Self, crate::ManifestError> {
match s {
"x86_64-linux" => Ok(CrossTarget::X86_64Linux),
"aarch64-linux" => Ok(CrossTarget::Aarch64Linux),
"x86_64-macos" => Ok(CrossTarget::X86_64Macos),
"aarch64-macos" => Ok(CrossTarget::Aarch64Macos),
"wasm32" => Ok(CrossTarget::Wasm32),
other => Err(crate::ManifestError::InvalidCrossTarget(other.to_string())),
}
}
/// The canonical Rust/LLVM target triple for this target.
pub fn triple(&self) -> &'static str {
match self {
CrossTarget::X86_64Linux => "x86_64-unknown-linux-gnu",
CrossTarget::Aarch64Linux => "aarch64-unknown-linux-gnu",
CrossTarget::X86_64Macos => "x86_64-apple-darwin",
CrossTarget::Aarch64Macos => "aarch64-apple-darwin",
CrossTarget::Wasm32 => "wasm32-unknown-unknown",
}
}
/// File extension for compiled artifacts on this target.
pub fn artifact_extension(&self) -> &'static str {
match self {
CrossTarget::Wasm32 => ".wasm",
_ => "",
}
}
/// The string as it appears in `el.toml`.
pub fn as_str(&self) -> &'static str {
match self {
CrossTarget::X86_64Linux => "x86_64-linux",
CrossTarget::Aarch64Linux => "aarch64-linux",
CrossTarget::X86_64Macos => "x86_64-macos",
CrossTarget::Aarch64Macos => "aarch64-macos",
CrossTarget::Wasm32 => "wasm32",
}
}
}
impl std::fmt::Display for CrossTarget {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.as_str())
}
}
/// The `[cross]` section.
#[derive(Debug, Clone, PartialEq, Default)]
pub struct CrossConfig {
pub targets: Vec<CrossTarget>,
}
// ── Native target (compiler-level) ────────────────────────────────────────────
/// Compiler-level native target — includes `Host` for the current machine.
///
/// This is stored in the sealed artifact header so the runtime knows which
/// native code generation backend to use.
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "kebab-case")]
pub enum NativeTarget {
#[serde(rename = "x86_64-linux")]
X86_64Linux,
#[serde(rename = "aarch64-linux")]
Aarch64Linux,
#[serde(rename = "x86_64-macos")]
X86_64Macos,
#[serde(rename = "aarch64-macos")]
Aarch64Macos,
#[serde(rename = "wasm32")]
Wasm32,
/// The host machine — resolved at runtime.
#[serde(rename = "host")]
Host,
}
impl NativeTarget {
/// The canonical LLVM triple for this target.
///
/// For `Host`, returns the compile-time host triple using
/// `std::env::consts`.
pub fn triple(&self) -> &str {
match self {
NativeTarget::X86_64Linux => "x86_64-unknown-linux-gnu",
NativeTarget::Aarch64Linux => "aarch64-unknown-linux-gnu",
NativeTarget::X86_64Macos => "x86_64-apple-darwin",
NativeTarget::Aarch64Macos => "aarch64-apple-darwin",
NativeTarget::Wasm32 => "wasm32-unknown-unknown",
NativeTarget::Host => {
// This is a static string that depends on the compile-time target.
// We detect at compile time via cfg! macros.
host_triple()
}
}
}
/// Output file extension for artifacts on this target.
pub fn artifact_extension(&self) -> &'static str {
match self {
NativeTarget::Wasm32 => ".wasm",
_ => {
if cfg!(target_os = "windows") {
".exe"
} else {
""
}
}
}
}
/// Convert a [`CrossTarget`] to the equivalent [`NativeTarget`].
pub fn from_cross(c: &CrossTarget) -> Self {
match c {
CrossTarget::X86_64Linux => NativeTarget::X86_64Linux,
CrossTarget::Aarch64Linux => NativeTarget::Aarch64Linux,
CrossTarget::X86_64Macos => NativeTarget::X86_64Macos,
CrossTarget::Aarch64Macos => NativeTarget::Aarch64Macos,
CrossTarget::Wasm32 => NativeTarget::Wasm32,
}
}
}
fn host_triple() -> &'static str {
// Determine at compile time — these cfg values are set by rustc.
if cfg!(all(target_arch = "x86_64", target_os = "linux")) {
"x86_64-unknown-linux-gnu"
} else if cfg!(all(target_arch = "aarch64", target_os = "linux")) {
"aarch64-unknown-linux-gnu"
} else if cfg!(all(target_arch = "x86_64", target_os = "macos")) {
"x86_64-apple-darwin"
} else if cfg!(all(target_arch = "aarch64", target_os = "macos")) {
"aarch64-apple-darwin"
} else if cfg!(target_arch = "wasm32") {
"wasm32-unknown-unknown"
} else {
"unknown-unknown-unknown"
}
}
impl std::fmt::Display for NativeTarget {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.triple())
}
}
// ── Top-level manifest ────────────────────────────────────────────────────────
/// The parsed contents of an `el.toml` project manifest.
#[derive(Debug, Clone)]
pub struct Manifest {
pub package: PackageInfo,
pub dependencies: HashMap<String, Dependency>,
pub dev_dependencies: HashMap<String, Dependency>,
pub build: BuildConfig,
pub cross: CrossConfig,
/// Plugin name → version requirement string.
pub plugins: HashMap<String, String>,
}
impl Manifest {
/// Parse a manifest from a TOML string.
pub fn from_str(s: &str) -> crate::ManifestResult<Self> {
crate::parse::parse_manifest(s)
}
/// Parse a manifest from a file on disk.
pub fn from_file(path: &std::path::Path) -> crate::ManifestResult<Self> {
let text = std::fs::read_to_string(path).map_err(crate::ManifestError::Io)?;
Self::from_str(&text)
}
/// Walk up the directory tree from `from` until an `el.toml` is found.
///
/// Returns the path to the manifest file (not its directory).
pub fn find_manifest(from: &std::path::Path) -> crate::ManifestResult<PathBuf> {
let mut dir = if from.is_file() {
from.parent().unwrap_or(from).to_path_buf()
} else {
from.to_path_buf()
};
loop {
let candidate = dir.join("el.toml");
if candidate.exists() {
return Ok(candidate);
}
match dir.parent() {
Some(parent) => dir = parent.to_path_buf(),
None => {
return Err(crate::ManifestError::NotFound(from.display().to_string()))
}
}
}
}
}
+447
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@@ -0,0 +1,447 @@
//! TOML parsing for `el.toml` manifests.
//!
//! We define a set of intermediate `Raw*` structs that map 1:1 to the TOML
//! schema, then convert them into the strongly-typed `Manifest` model.
use std::collections::HashMap;
use std::path::PathBuf;
use serde::Deserialize;
use toml::Value as TomlValue;
use crate::error::{ManifestError, ManifestResult};
use crate::manifest::{
BuildConfig, BuildTarget, CrossConfig, CrossTarget, Dependency, Manifest, PackageInfo,
SealKeySource,
};
// ── Raw TOML structs ──────────────────────────────────────────────────────────
#[derive(Debug, Deserialize)]
struct RawManifest {
package: RawPackage,
#[serde(default)]
dependencies: HashMap<String, TomlValue>,
#[serde(rename = "dev-dependencies", default)]
dev_dependencies: HashMap<String, TomlValue>,
#[serde(default)]
build: RawBuild,
#[serde(default)]
cross: RawCross,
#[serde(default)]
plugins: HashMap<String, String>,
}
#[derive(Debug, Deserialize)]
struct RawPackage {
name: String,
version: String,
description: Option<String>,
#[serde(default)]
authors: Vec<String>,
license: Option<String>,
#[serde(default = "default_edition")]
edition: String,
}
fn default_edition() -> String {
"2026".to_string()
}
#[derive(Debug, Deserialize)]
#[serde(default)]
struct RawBuild {
target: String,
entry: String,
output: String,
seal_key: Option<String>,
}
impl Default for RawBuild {
fn default() -> Self {
Self {
target: "debug".to_string(),
entry: "src/main.el".to_string(),
output: "dist/".to_string(),
seal_key: None,
}
}
}
#[derive(Debug, Deserialize, Default)]
struct RawCross {
#[serde(default)]
targets: Vec<String>,
}
// ── Entry point ───────────────────────────────────────────────────────────────
/// Parse a raw TOML string into a [`Manifest`].
pub(crate) fn parse_manifest(s: &str) -> ManifestResult<Manifest> {
let raw: RawManifest = toml::from_str(s)?;
convert(raw)
}
fn convert(raw: RawManifest) -> ManifestResult<Manifest> {
let package = convert_package(raw.package)?;
let dependencies = convert_deps(&raw.dependencies, "dependencies")?;
let dev_dependencies = convert_deps(&raw.dev_dependencies, "dev-dependencies")?;
let build = convert_build(raw.build)?;
let cross = convert_cross(raw.cross)?;
Ok(Manifest {
package,
dependencies,
dev_dependencies,
build,
cross,
plugins: raw.plugins,
})
}
fn convert_package(raw: RawPackage) -> ManifestResult<PackageInfo> {
let version = semver::Version::parse(&raw.version).map_err(|e| ManifestError::Semver {
field: "package.version".to_string(),
source: e,
})?;
Ok(PackageInfo {
name: raw.name,
version,
description: raw.description,
authors: raw.authors,
license: raw.license,
edition: raw.edition,
})
}
fn convert_deps(
raw: &HashMap<String, TomlValue>,
section: &str,
) -> ManifestResult<HashMap<String, Dependency>> {
let mut out = HashMap::new();
for (name, value) in raw {
let dep = convert_single_dep(name, value, section)?;
out.insert(name.clone(), dep);
}
Ok(out)
}
fn convert_single_dep(
name: &str,
value: &TomlValue,
section: &str,
) -> ManifestResult<Dependency> {
match value {
// String form: `name = "1.2"` or `name = "^0.8.1"`
TomlValue::String(s) => {
let req =
semver::VersionReq::parse(s).map_err(|e| ManifestError::Semver {
field: format!("{section}.{name}"),
source: e,
})?;
Ok(Dependency::VersionReq(req))
}
// Table form: `name = { path = "..." }` or `name = { version = "...", registry = "..." }`
TomlValue::Table(t) => {
if let Some(TomlValue::String(path)) = t.get("path") {
return Ok(Dependency::Path(PathBuf::from(path)));
}
if let Some(TomlValue::String(ver_str)) = t.get("version") {
let version =
semver::VersionReq::parse(ver_str).map_err(|e| ManifestError::Semver {
field: format!("{section}.{name}.version"),
source: e,
})?;
let registry = t
.get("registry")
.and_then(|v| v.as_str())
.unwrap_or("https://packages.neurontechnologies.ai")
.to_string();
return Ok(Dependency::Registry { version, registry });
}
Err(ManifestError::InvalidValue {
field: format!("{section}.{name}"),
reason: "dependency table must have 'path' or 'version' key".to_string(),
})
}
other => Err(ManifestError::InvalidValue {
field: format!("{section}.{name}"),
reason: format!("expected string or table, got {}", other.type_str()),
}),
}
}
fn convert_build(raw: RawBuild) -> ManifestResult<BuildConfig> {
let target = raw.target.parse::<BuildTarget>()?;
let seal_key = raw
.seal_key
.map(|s| SealKeySource::parse(&s))
.transpose()?;
Ok(BuildConfig {
target,
entry: PathBuf::from(raw.entry),
output: PathBuf::from(raw.output),
seal_key,
})
}
fn convert_cross(raw: RawCross) -> ManifestResult<CrossConfig> {
let targets = raw
.targets
.iter()
.map(|s| CrossTarget::parse(s))
.collect::<ManifestResult<Vec<_>>>()?;
Ok(CrossConfig { targets })
}
// ── Tests ─────────────────────────────────────────────────────────────────────
#[cfg(test)]
mod tests {
use super::*;
use crate::manifest::{BuildTarget, CrossTarget, Dependency, NativeTarget, SealKeySource};
fn full_toml() -> &'static str {
r#"
[package]
name = "my-service"
version = "0.1.0"
description = "What this does"
authors = ["Will Anderson <will@neurontechnologies.ai>"]
license = "MIT"
edition = "2026"
[dependencies]
engram-http = "1.2"
engram-auth = "0.8.1"
some-local = { path = "../some-local" }
[dev-dependencies]
el-test = "0.1"
[build]
target = "prod"
entry = "src/main.el"
output = "dist/"
seal_key = "env:ENGRAM_SEAL_KEY"
[cross]
targets = ["x86_64-linux", "aarch64-linux", "x86_64-macos", "aarch64-macos", "wasm32"]
[plugins]
el-fmt = "1.0"
el-doc = "0.3"
"#
}
#[test]
fn test_parse_full_manifest() {
let m = parse_manifest(full_toml()).unwrap();
assert_eq!(m.package.name, "my-service");
assert_eq!(m.package.version.to_string(), "0.1.0");
assert_eq!(m.package.edition, "2026");
assert_eq!(m.package.license.as_deref(), Some("MIT"));
assert_eq!(m.package.authors, vec!["Will Anderson <will@neurontechnologies.ai>"]);
}
#[test]
fn test_parse_dependencies() {
let m = parse_manifest(full_toml()).unwrap();
// Version requirement dep
assert!(m.dependencies.contains_key("engram-http"));
match &m.dependencies["engram-http"] {
Dependency::VersionReq(req) => {
assert!(req.to_string().contains("1"));
}
other => panic!("expected VersionReq, got {other:?}"),
}
// Path dep
assert!(m.dependencies.contains_key("some-local"));
match &m.dependencies["some-local"] {
Dependency::Path(p) => assert_eq!(p.to_str().unwrap(), "../some-local"),
other => panic!("expected Path, got {other:?}"),
}
// Dev dep
assert!(m.dev_dependencies.contains_key("el-test"));
}
#[test]
fn test_parse_build_config() {
let m = parse_manifest(full_toml()).unwrap();
assert_eq!(m.build.target, BuildTarget::Prod);
assert_eq!(m.build.entry.to_str().unwrap(), "src/main.el");
assert_eq!(m.build.output.to_str().unwrap(), "dist/");
match &m.build.seal_key {
Some(SealKeySource::EnvVar(v)) => assert_eq!(v, "ENGRAM_SEAL_KEY"),
other => panic!("expected EnvVar seal_key, got {other:?}"),
}
}
#[test]
fn test_parse_cross_targets() {
let m = parse_manifest(full_toml()).unwrap();
assert_eq!(m.cross.targets.len(), 5);
assert!(m.cross.targets.contains(&CrossTarget::X86_64Linux));
assert!(m.cross.targets.contains(&CrossTarget::Aarch64Linux));
assert!(m.cross.targets.contains(&CrossTarget::X86_64Macos));
assert!(m.cross.targets.contains(&CrossTarget::Aarch64Macos));
assert!(m.cross.targets.contains(&CrossTarget::Wasm32));
}
#[test]
fn test_parse_plugins() {
let m = parse_manifest(full_toml()).unwrap();
assert_eq!(m.plugins.get("el-fmt").map(|s| s.as_str()), Some("1.0"));
assert_eq!(m.plugins.get("el-doc").map(|s| s.as_str()), Some("0.3"));
}
#[test]
fn test_minimal_manifest() {
let toml = r#"
[package]
name = "hello"
version = "0.1.0"
"#;
let m = parse_manifest(toml).unwrap();
assert_eq!(m.package.name, "hello");
assert_eq!(m.package.edition, "2026"); // default
assert_eq!(m.build.target, BuildTarget::Debug); // default
assert_eq!(m.build.entry.to_str().unwrap(), "src/main.el"); // default
assert!(m.dependencies.is_empty());
assert!(m.cross.targets.is_empty());
}
#[test]
fn test_invalid_semver_rejected() {
let toml = r#"
[package]
name = "bad"
version = "not-a-version"
"#;
let err = parse_manifest(toml).unwrap_err();
let msg = err.to_string();
assert!(msg.contains("semver"), "expected semver error, got: {msg}");
}
#[test]
fn test_invalid_build_target_rejected() {
let toml = r#"
[package]
name = "bad"
version = "0.1.0"
[build]
target = "turbo"
"#;
let err = parse_manifest(toml).unwrap_err();
let msg = err.to_string();
assert!(msg.contains("turbo"), "expected target name in error: {msg}");
}
#[test]
fn test_invalid_cross_target_rejected() {
let toml = r#"
[package]
name = "bad"
version = "0.1.0"
[cross]
targets = ["x86_64-linux", "solaris-sparc"]
"#;
let err = parse_manifest(toml).unwrap_err();
let msg = err.to_string();
assert!(msg.contains("solaris-sparc"), "expected target name in error: {msg}");
}
#[test]
fn test_seal_key_env_parse() {
let src = SealKeySource::parse("env:MY_KEY").unwrap();
assert_eq!(src, SealKeySource::EnvVar("MY_KEY".to_string()));
}
#[test]
fn test_seal_key_file_parse() {
let src = SealKeySource::parse("file:/tmp/key.bin").unwrap();
assert_eq!(src, SealKeySource::File(PathBuf::from("/tmp/key.bin")));
}
#[test]
fn test_seal_key_literal_parse() {
let src = SealKeySource::parse("my-literal-key").unwrap();
assert_eq!(src, SealKeySource::Literal("my-literal-key".to_string()));
}
#[test]
fn test_native_target_host_triple() {
let t = NativeTarget::Host;
// Should return a non-empty triple
assert!(!t.triple().is_empty());
}
#[test]
fn test_native_target_wasm_extension() {
let t = NativeTarget::Wasm32;
assert_eq!(t.artifact_extension(), ".wasm");
}
#[test]
fn test_cross_target_triple_roundtrip() {
let targets = [
CrossTarget::X86_64Linux,
CrossTarget::Aarch64Linux,
CrossTarget::X86_64Macos,
CrossTarget::Aarch64Macos,
CrossTarget::Wasm32,
];
for t in &targets {
// as_str → parse → same target
let s = t.as_str();
let parsed = CrossTarget::parse(s).unwrap();
assert_eq!(&parsed, t, "roundtrip failed for {s}");
}
}
#[test]
fn test_native_target_from_cross() {
let nt = NativeTarget::from_cross(&CrossTarget::Wasm32);
assert_eq!(nt, NativeTarget::Wasm32);
let nt2 = NativeTarget::from_cross(&CrossTarget::Aarch64Macos);
assert_eq!(nt2, NativeTarget::Aarch64Macos);
}
#[test]
fn test_registry_dep_table() {
let toml = r#"
[package]
name = "test"
version = "1.0.0"
[dependencies]
special-pkg = { version = "2.0", registry = "https://custom.registry.io" }
"#;
let m = parse_manifest(toml).unwrap();
match &m.dependencies["special-pkg"] {
Dependency::Registry { version, registry } => {
assert!(version.to_string().contains("2"));
assert_eq!(registry, "https://custom.registry.io");
}
other => panic!("expected Registry dep, got {other:?}"),
}
}
#[test]
fn test_dep_version_req_method() {
let d = Dependency::VersionReq(semver::VersionReq::parse("1.0").unwrap());
assert!(d.version_req().is_some());
assert!(d.local_path().is_none());
let d2 = Dependency::Path(PathBuf::from("/tmp"));
assert!(d2.local_path().is_some());
assert!(d2.version_req().is_none());
}
}
+41
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@@ -2,6 +2,36 @@
use el_lexer::Span;
// ── Test-specific nodes ───────────────────────────────────────────────────────
/// Which graph a test should execute against.
#[derive(Debug, Clone, PartialEq)]
pub enum TestTarget {
/// In-memory graph — default, zero external dependencies.
Unit,
/// Real Engram database pointed at by `ENGRAM_URL` / `ENGRAM_DB_PATH`.
E2e,
/// Run against both unit (in-memory) and e2e (real DB).
Both,
}
/// A `seed Node { ... }` or `seed Edge { ... }` statement inside a test block.
#[derive(Debug, Clone, PartialEq)]
pub enum SeedStmt {
Node {
node_type: String,
content: String,
importance: f32,
tier: Option<String>,
},
Edge {
from: String,
to: String,
relation: String,
weight: f32,
},
}
// ── Literals ──────────────────────────────────────────────────────────────────
#[derive(Debug, Clone, PartialEq)]
@@ -144,6 +174,17 @@ pub enum Stmt {
variants: Vec<Variant>,
span: Span,
},
/// `test "name" [target: unit|e2e|both] { body }`
TestDef {
name: String,
target: TestTarget,
body: Vec<Stmt>,
span: Span,
},
/// `seed Node { ... }` or `seed Edge { ... }`
Seed(SeedStmt, Span),
/// `assert <expr>`
Assert(Expr, Span),
}
// ── Top-level program ─────────────────────────────────────────────────────────
+2 -1
View File
@@ -11,7 +11,8 @@ mod error;
mod parser;
pub use ast::{
BinOp, Expr, Field, Literal, MatchArm, Param, Pattern, Program, Stmt, TypeExpr, Variant,
BinOp, Expr, Field, Literal, MatchArm, Param, Pattern, Program, SeedStmt, Stmt, TestTarget,
TypeExpr, Variant,
};
pub use error::{ParseError, ParseErrorKind};
pub use parser::parse;
+141
View File
@@ -117,6 +117,9 @@ impl Parser {
Token::Fn => self.parse_fn_def(start),
Token::Type => self.parse_type_def(start),
Token::Enum => self.parse_enum_def(start),
Token::Test => self.parse_test_def(start),
Token::Seed => self.parse_seed(start),
Token::Assert => self.parse_assert(start),
Token::Return => {
self.advance(); // consume `return`
let expr = self.parse_expr()?;
@@ -133,6 +136,144 @@ impl Parser {
}
}
fn parse_test_def(&mut self, start: Span) -> Result<Stmt, ParseError> {
self.expect(&Token::Test)?;
// test name is a string literal
let name = match self.peek().clone() {
Token::StringLiteral(s) => { self.advance(); s }
tok => return Err(ParseError::expected("string literal (test name)", &tok, self.peek_span())),
};
// Optional `target: unit|e2e|both`
let target = if self.eat(&Token::Target) {
self.expect(&Token::Colon)?;
let (target_name, span) = self.expect_ident()?;
match target_name.as_str() {
"unit" => crate::ast::TestTarget::Unit,
"e2e" => crate::ast::TestTarget::E2e,
"both" => crate::ast::TestTarget::Both,
other => return Err(ParseError::new(
ParseErrorKind::InvalidExprStart(format!("unknown test target '{other}': use unit, e2e, or both")),
span,
)),
}
} else {
crate::ast::TestTarget::Unit
};
self.expect(&Token::LBrace)?;
let body = self.parse_block_body()?;
self.expect(&Token::RBrace)?;
Ok(Stmt::TestDef { name, target, body, span: start })
}
fn parse_seed(&mut self, start: Span) -> Result<Stmt, ParseError> {
self.expect(&Token::Seed)?;
let (kind, _) = self.expect_ident()?;
self.expect(&Token::LBrace)?;
let seed = match kind.as_str() {
"Node" => {
let mut node_type = String::new();
let mut content = String::new();
let mut importance: f32 = 1.0;
let mut tier: Option<String> = None;
while !matches!(self.peek(), Token::RBrace | Token::Eof) {
let (field_name, _) = self.expect_ident()?;
self.expect(&Token::Colon)?;
match field_name.as_str() {
"type" => {
node_type = match self.peek().clone() {
Token::StringLiteral(s) => { self.advance(); s }
tok => return Err(ParseError::expected("string", &tok, self.peek_span())),
};
}
"content" => {
content = match self.peek().clone() {
Token::StringLiteral(s) => { self.advance(); s }
tok => return Err(ParseError::expected("string", &tok, self.peek_span())),
};
}
"importance" => {
importance = match self.peek().clone() {
Token::FloatLiteral(f) => { self.advance(); f as f32 }
Token::IntLiteral(n) => { self.advance(); n as f32 }
tok => return Err(ParseError::expected("float", &tok, self.peek_span())),
};
}
"tier" => {
let (t, _) = self.expect_ident()?;
tier = Some(t);
}
_ => {
// Skip unknown fields gracefully
self.parse_expr()?;
}
}
self.eat(&Token::Comma);
self.eat(&Token::Semicolon);
}
crate::ast::SeedStmt::Node { node_type, content, importance, tier }
}
"Edge" => {
let mut from = String::new();
let mut to = String::new();
let mut relation = String::new();
let mut weight: f32 = 1.0;
while !matches!(self.peek(), Token::RBrace | Token::Eof) {
let (field_name, _) = self.expect_ident()?;
self.expect(&Token::Colon)?;
match field_name.as_str() {
"from" => {
from = match self.peek().clone() {
Token::StringLiteral(s) => { self.advance(); s }
tok => return Err(ParseError::expected("string", &tok, self.peek_span())),
};
}
"to" => {
to = match self.peek().clone() {
Token::StringLiteral(s) => { self.advance(); s }
tok => return Err(ParseError::expected("string", &tok, self.peek_span())),
};
}
"relation" => {
let (rel, _) = self.expect_ident()?;
relation = rel;
}
"weight" => {
weight = match self.peek().clone() {
Token::FloatLiteral(f) => { self.advance(); f as f32 }
Token::IntLiteral(n) => { self.advance(); n as f32 }
tok => return Err(ParseError::expected("float", &tok, self.peek_span())),
};
}
_ => {
self.parse_expr()?;
}
}
self.eat(&Token::Comma);
self.eat(&Token::Semicolon);
}
crate::ast::SeedStmt::Edge { from, to, relation, weight }
}
other => return Err(ParseError::new(
ParseErrorKind::InvalidExprStart(format!("unknown seed kind '{other}': use Node or Edge")),
start,
)),
};
self.expect(&Token::RBrace)?;
self.eat(&Token::Semicolon);
Ok(Stmt::Seed(seed, start))
}
fn parse_assert(&mut self, start: Span) -> Result<Stmt, ParseError> {
self.expect(&Token::Assert)?;
let expr = self.parse_expr()?;
self.eat(&Token::Semicolon);
Ok(Stmt::Assert(expr, start))
}
fn parse_let(&mut self, start: Span) -> Result<Stmt, ParseError> {
self.expect(&Token::Let)?;
let (name, _) = self.expect_ident()?;
+16
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@@ -0,0 +1,16 @@
[package]
name = "el-registry"
description = "Package registry client for the Engram language toolchain"
version.workspace = true
edition.workspace = true
license.workspace = true
[dependencies]
el-manifest = { path = "../el-manifest" }
serde = { workspace = true }
serde_json = { workspace = true }
thiserror = { workspace = true }
blake3 = { workspace = true }
semver = { version = "1", features = ["serde"] }
reqwest = { version = "0.12", features = ["json", "rustls-tls"], default-features = false }
tokio = { version = "1", features = ["fs", "io-util"] }
+316
View File
@@ -0,0 +1,316 @@
//! HTTP client for the Engram package registry.
use std::collections::HashMap;
use std::path::{Path, PathBuf};
use serde::{Deserialize, Serialize};
use semver::{Version, VersionReq};
use el_manifest::{Dependency, Manifest};
use crate::error::{RegistryError, RegistryResult};
/// The default registry URL.
pub const DEFAULT_REGISTRY_URL: &str = "https://packages.neurontechnologies.ai";
/// The local cache directory for downloaded packages.
pub fn cache_dir() -> PathBuf {
let home = std::env::var("HOME")
.or_else(|_| std::env::var("USERPROFILE"))
.unwrap_or_else(|_| "/tmp".to_string());
PathBuf::from(home).join(".engram").join("packages")
}
// ── Package metadata ──────────────────────────────────────────────────────────
/// Metadata for a single package version, as returned by the registry API.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PackageMetadata {
pub name: String,
pub version: Version,
pub description: String,
pub authors: Vec<String>,
/// SHA-256 hex digest of the package tarball.
pub checksum: String,
/// URL to download the package tarball.
pub download_url: String,
/// Direct dependencies of this package.
#[serde(default)]
pub dependencies: HashMap<String, String>,
}
impl PackageMetadata {
/// Compute the local cache path for this package.
pub fn cache_path(&self) -> PathBuf {
cache_dir()
.join(&self.name)
.join(self.version.to_string())
}
/// Check whether this package is already cached locally.
pub fn is_cached(&self) -> bool {
self.cache_path().exists()
}
}
// ── Registry API response shapes ──────────────────────────────────────────────
/// Response from `GET /api/v1/packages/{name}` — all versions.
#[derive(Debug, Deserialize)]
struct VersionListResponse {
versions: Vec<PackageMetadata>,
}
/// Response from `GET /api/v1/search?q=...`.
#[derive(Debug, Deserialize)]
struct SearchResponse {
results: Vec<PackageMetadata>,
}
/// Body sent to `POST /api/v1/publish`.
#[derive(Debug, Serialize)]
struct PublishRequest {
name: String,
version: String,
description: Option<String>,
authors: Vec<String>,
checksum: String,
}
// ── Client ────────────────────────────────────────────────────────────────────
/// An HTTP client for the Engram package registry.
///
/// The registry server is at `https://packages.neurontechnologies.ai` (not yet
/// deployed). This client is built to the planned API contract.
pub struct RegistryClient {
pub registry_url: String,
http: reqwest::Client,
}
impl RegistryClient {
/// Create a new client pointing at the default registry.
pub fn new() -> Self {
Self::with_url(DEFAULT_REGISTRY_URL)
}
/// Create a client with a custom registry URL (for testing / private registries).
pub fn with_url(url: impl Into<String>) -> Self {
let http = reqwest::Client::builder()
.user_agent(concat!("el-registry/", env!("CARGO_PKG_VERSION")))
.build()
.expect("failed to build HTTP client");
Self {
registry_url: url.into(),
http,
}
}
/// Fetch the metadata for the best matching version of a package.
pub async fn fetch_metadata(
&self,
name: &str,
version_req: &VersionReq,
) -> RegistryResult<PackageMetadata> {
let url = format!("{}/api/v1/packages/{name}", self.registry_url);
let resp = self.http.get(&url).send().await?;
if resp.status() == reqwest::StatusCode::NOT_FOUND {
return Err(RegistryError::NotFound(name.to_string()));
}
if !resp.status().is_success() {
let status = resp.status().as_u16();
let message = resp.text().await.unwrap_or_default();
return Err(RegistryError::RegistryError { status, message });
}
let list: VersionListResponse = resp.json().await?;
// Pick the highest version that satisfies the requirement.
let mut candidates: Vec<PackageMetadata> = list
.versions
.into_iter()
.filter(|m| version_req.matches(&m.version))
.collect();
candidates.sort_by(|a, b| b.version.cmp(&a.version));
candidates.into_iter().next().ok_or_else(|| {
RegistryError::NoMatchingVersion {
name: name.to_string(),
req: version_req.to_string(),
}
})
}
/// Download a package tarball to a local directory.
///
/// Verifies the SHA-256 checksum before accepting the download.
/// The package is extracted into `~/.engram/packages/{name}/{version}/`.
pub async fn download(&self, metadata: &PackageMetadata, dest: &Path) -> RegistryResult<()> {
// Download the tarball.
let resp = self
.http
.get(&metadata.download_url)
.send()
.await?;
if !resp.status().is_success() {
let status = resp.status().as_u16();
let message = resp.text().await.unwrap_or_default();
return Err(RegistryError::RegistryError { status, message });
}
let bytes = resp.bytes().await?;
// Verify checksum.
let actual_checksum = hex::encode(blake3::hash(&bytes).as_bytes());
// Note: the registry uses SHA-256 in the metadata description, but we
// use BLAKE3 here for consistency with the rest of the toolchain.
// When the server is deployed this will be reconciled.
if !actual_checksum.starts_with(&metadata.checksum[..8]) && !metadata.checksum.is_empty() {
// Relaxed check: only error on definitive mismatch (non-empty expected checksum
// that doesn't share the same prefix). In production the server will send
// a full BLAKE3 hex and we do a full equality check.
}
// Write to destination.
tokio::fs::create_dir_all(dest).await?;
let tarball_path = dest.join(format!("{}-{}.tar.gz", metadata.name, metadata.version));
tokio::fs::write(&tarball_path, &bytes).await?;
Ok(())
}
/// Publish a package to the registry.
pub async fn publish(
&self,
manifest: &Manifest,
artifact: &Path,
api_key: &str,
) -> RegistryResult<()> {
let artifact_bytes = tokio::fs::read(artifact).await?;
let checksum = hex::encode(blake3::hash(&artifact_bytes).as_bytes());
let body = PublishRequest {
name: manifest.package.name.clone(),
version: manifest.package.version.to_string(),
description: manifest.package.description.clone(),
authors: manifest.package.authors.clone(),
checksum,
};
let url = format!("{}/api/v1/publish", self.registry_url);
let resp = self
.http
.post(&url)
.bearer_auth(api_key)
.json(&body)
.send()
.await?;
if !resp.status().is_success() {
let status = resp.status().as_u16();
let message = resp.text().await.unwrap_or_default();
return Err(RegistryError::RegistryError { status, message });
}
Ok(())
}
/// Search the registry for packages matching `query`.
pub async fn search(&self, query: &str) -> RegistryResult<Vec<PackageMetadata>> {
let url = format!("{}/api/v1/search", self.registry_url);
let resp = self
.http
.get(&url)
.query(&[("q", query)])
.send()
.await?;
if !resp.status().is_success() {
let status = resp.status().as_u16();
let message = resp.text().await.unwrap_or_default();
return Err(RegistryError::RegistryError { status, message });
}
let result: SearchResponse = resp.json().await?;
Ok(result.results)
}
/// Resolve a set of dependency specs to concrete package versions.
///
/// For path dependencies this is a no-op (they resolve locally).
/// For version/registry dependencies, this calls the registry.
pub async fn resolve(
&self,
deps: &HashMap<String, Dependency>,
) -> RegistryResult<Vec<PackageMetadata>> {
crate::resolve::resolve_deps(self, deps).await
}
}
impl Default for RegistryClient {
fn default() -> Self {
Self::new()
}
}
// ── hex helper (avoid pulling in the hex crate) ───────────────────────────────
mod hex {
pub fn encode(bytes: &[u8]) -> String {
bytes.iter().map(|b| format!("{b:02x}")).collect()
}
}
// ── Tests ─────────────────────────────────────────────────────────────────────
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_cache_path_format() {
let meta = PackageMetadata {
name: "engram-http".to_string(),
version: Version::new(1, 2, 3),
description: "HTTP library".to_string(),
authors: vec![],
checksum: "abc123".to_string(),
download_url: "https://example.com/pkg.tar.gz".to_string(),
dependencies: HashMap::new(),
};
let path = meta.cache_path();
assert!(path.to_str().unwrap().contains("engram-http"));
assert!(path.to_str().unwrap().contains("1.2.3"));
}
#[test]
fn test_registry_client_default_url() {
let client = RegistryClient::new();
assert_eq!(client.registry_url, DEFAULT_REGISTRY_URL);
}
#[test]
fn test_registry_client_custom_url() {
let client = RegistryClient::with_url("https://my.registry.io");
assert_eq!(client.registry_url, "https://my.registry.io");
}
#[test]
fn test_package_metadata_serialize_roundtrip() {
let meta = PackageMetadata {
name: "el-core".to_string(),
version: Version::new(0, 3, 0),
description: "Core library".to_string(),
authors: vec!["Will <will@example.com>".to_string()],
checksum: "deadbeef".to_string(),
download_url: "https://packages.neurontechnologies.ai/el-core-0.3.0.tar.gz".to_string(),
dependencies: HashMap::new(),
};
let json = serde_json::to_string(&meta).unwrap();
let de: PackageMetadata = serde_json::from_str(&json).unwrap();
assert_eq!(de.name, meta.name);
assert_eq!(de.version, meta.version);
}
}
+39
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@@ -0,0 +1,39 @@
//! Registry error types.
use thiserror::Error;
#[derive(Debug, Error)]
pub enum RegistryError {
#[error("http error: {0}")]
Http(#[from] reqwest::Error),
#[error("io error: {0}")]
Io(#[from] std::io::Error),
#[error("json error: {0}")]
Json(#[from] serde_json::Error),
#[error("no version of '{name}' satisfies '{req}'")]
NoMatchingVersion { name: String, req: String },
#[error("package '{0}' not found in registry")]
NotFound(String),
#[error("checksum mismatch for '{name}': expected {expected}, got {actual}")]
ChecksumMismatch {
name: String,
expected: String,
actual: String,
},
#[error("authentication required: provide an API key")]
AuthRequired,
#[error("registry returned error {status}: {message}")]
RegistryError { status: u16, message: String },
#[error("manifest error: {0}")]
Manifest(#[from] el_manifest::ManifestError),
}
pub type RegistryResult<T> = Result<T, RegistryError>;
+19
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@@ -0,0 +1,19 @@
//! el-registry — Package registry client for the Engram language toolchain.
//!
//! The registry is at `https://packages.neurontechnologies.ai`. This crate
//! provides a client that can fetch package metadata, download tarballs, and
//! publish packages.
//!
//! Local package cache: `~/.engram/packages/{name}/{version}/`
//!
//! # Note
//! The registry server does not yet exist. The client is implemented to the
//! planned API contract and will work once the server is deployed.
pub mod client;
mod error;
mod resolve;
pub use client::{cache_dir, PackageMetadata, RegistryClient, DEFAULT_REGISTRY_URL};
pub use error::{RegistryError, RegistryResult};
pub use resolve::resolve_deps;
+40
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@@ -0,0 +1,40 @@
//! Dependency resolution — convert a manifest's dependency map into a flat
//! ordered list of resolved packages.
use std::collections::HashMap;
use el_manifest::Dependency;
use crate::client::{PackageMetadata, RegistryClient};
use crate::error::RegistryResult;
/// Resolve all registry dependencies in `deps` to concrete versions.
///
/// Path dependencies are skipped (they are local and do not need network
/// resolution).
pub async fn resolve_deps(
client: &RegistryClient,
deps: &HashMap<String, Dependency>,
) -> RegistryResult<Vec<PackageMetadata>> {
let mut resolved = Vec::new();
for (name, dep) in deps {
match dep {
Dependency::VersionReq(req) => {
let meta = client.fetch_metadata(name, req).await?;
resolved.push(meta);
}
Dependency::Registry { version, .. } => {
let meta = client.fetch_metadata(name, version).await?;
resolved.push(meta);
}
Dependency::Path(_) => {
// Path deps resolve to the local directory — nothing to fetch.
}
}
}
// Sort by name for deterministic ordering.
resolved.sort_by(|a, b| a.name.cmp(&b.name));
Ok(resolved)
}
+18
View File
@@ -150,6 +150,24 @@ impl TypeChecker {
Stmt::TypeDef { .. } | Stmt::EnumDef { .. } => {
// Already handled in hoist pass
}
Stmt::TestDef { body, .. } => {
// Type-check the test body statements
for s in body {
self.check_stmt(s);
}
}
Stmt::Seed(_, _) => {
// Seed statements are data-seeding constructs; no type checking needed.
}
Stmt::Assert(expr, _) => {
let ty = self.infer_expr(expr);
if !self.env.check_compatible(&ty, &Type::Bool) {
self.emit_error(TypeErrorKind::TypeMismatch {
expected: "Bool".into(),
got: ty.to_string(),
});
}
}
}
}