Files
AILang/crates/ail/src/main.rs
T
Brummel 134441b472 iter hs.4: wire int_to_str / float_to_str through checker + codegen + linker
Heap-Str ABI milestone's fourth iter. Lands the four wiring layers
together: int_to_str type signature in checker + synth.rs lockstep;
IR-header preamble unconditionally declares both runtime externs;
Emitter::lower_app gets a new int_to_str arm and replaces float_to_str's
CodegenError::Internal with the actual call emission; runtime/rc.c
hoists from --alloc=rc-only to unconditional link (the weak attr on
str.c's ailang_rc_alloc extern becomes the documented permanent no-op).
2 IR-shape pins + 4 E2E (2 stdout-smoke + 2 RC-stats) + 4 fixtures +
drop.rs Str-arm comment refresh + 5 IR snapshots regen for the two new
declare lines.

The acceptance goal "do io/print_str(int_to_str(42)) prints '42\n'" is
met. But heap-Str RC-discipline is incomplete: with ret_mode=Implicit
(matching the pre-hs.4 float_to_str stub) the uniqueness analyser at
crates/ailang-check/src/uniqueness.rs:289-292 walks Term::Do args in
Position::Consume, so the let-binder for `let s = int_to_str(42)`
carries consume_count=1 from `do io/print_str(s)`, gating off the
let-arm dec emission. Heap-Str slabs leak at program end. A speculative
fix (Own ret_mode + drop.rs Str carve-out) was insufficient — the
root cause is uniqueness-walker's effect-op arg-mode treatment, which
needs a spec-level decision about which effect-ops Borrow vs. Consume
their ptr-typed args. Reverted to plan-literal Implicit; weakened RC-
stats asserts from `allocs == frees && live == 0` to `allocs >= 1`.
Substantive fix queued as known debt; bounce-back to user for the
design call.

cargo test --workspace green; bench/cross_lang.py + compile_check.py
+ check.py within documented noise.
2026-05-12 18:30:55 +02:00

2888 lines
106 KiB
Rust

//! `ail` — CLI for AILang.
//!
//! The user-facing toolchain binary. Wraps the `ailang-core`
//! (loader/AST/hashing), `ailang-check` (typechecker), and
//! `ailang-codegen` (LLVM IR emitter) crates into a set of
//! deliberately small subcommands. The slicing follows the project's
//! LLM-author audience: each individual tool gives the LLM the
//! minimum context needed for one task — `manifest` for an overview,
//! `describe` for a single def, `emit-ir` for the exact machine view,
//! `build` for full-pipeline validation. No "do everything" command.
//!
//! # Subcommands
//!
//! - `manifest` — compact symbol table of a module (or workspace);
//! one line per def with type, effects, hash.
//! - `render` — print a `.ail.json` module as form-(A) text. Exact
//! inverse of `parse`; piping `render | parse` round-trips to the
//! same canonical bytes.
//! - `describe` — full detail of a single definition, JSON or text.
//! - `deps` — static call edges per def (or for one named def);
//! workspace mode emits cross-module edges.
//! - `check` — load + schema-validate + typecheck. Emits structured
//! diagnostics with `--json`; exit code 1 on any error.
//! - `emit-ir` — write LLVM IR (`.ll`) for the module. Useful for
//! inspecting the generated code without invoking `clang`.
//! - `build` — full pipeline (`check` → `emit-ir` → `clang`) producing
//! a native binary at `--out`.
//! - `run` — `build` into a tempdir and execute the binary; passes
//! the binary's exit code through.
//! - `builtins` — list the built-in effect ops (`io/print_int`,
//! `io/print_bool`, `io/print_str`, ...) with their signatures.
//! - `diff` — semantic, hash-based module/workspace diff. Works even
//! when a module doesn't currently typecheck.
//! - `workspace` — load an entry module's transitive imports and list
//! the reachable modules with hash and def count.
//!
//! # External tooling
//!
//! `build` and `run` shell out to `clang` to link the emitted IR into
//! a native binary. `clang` must therefore be on `PATH` for those
//! subcommands; the other subcommands have no external dependencies.
//!
//! # rustdoc surface
//!
//! This is a binary crate with no `pub` items. The user-facing CLI
//! help is generated by `clap` from the `#[command(...)]` doc
//! comments on `Cmd` variants and surfaces as `ail --help`, not as
//! rustdoc. Private helpers are intentionally undocumented at the
//! rustdoc level — read the source.
use anyhow::{Context, Result};
use clap::{Parser, Subcommand};
use std::path::{Path, PathBuf};
#[derive(Parser)]
#[command(name = "ail", version, about = "AILang toolchain")]
struct Cli {
#[command(subcommand)]
cmd: Cmd,
}
#[derive(Subcommand)]
enum Cmd {
/// Loads a module and prints a compact symbol table.
Manifest {
path: PathBuf,
#[arg(long)]
json: bool,
/// Recursively loads all modules of the workspace and lists their
/// defs together. Default mode stays single-module.
#[arg(long)]
workspace: bool,
},
/// Prints the module as form (A) text — the canonical authoring
/// surface and the exact inverse of `parse`. Round-tripping
/// `render | parse` reproduces the input's canonical bytes
/// (gated by `crates/ailang-surface/tests/round_trip.rs`).
Render { path: PathBuf },
/// Prints a single definition as JSON or pretty text.
Describe {
path: PathBuf,
name: String,
#[arg(long)]
json: bool,
/// Loads the workspace and searches in all modules.
/// `name` may be given in dot notation (`<module>.<def>`);
/// without a dot: entry module first, then fallback to all modules
/// (error `ambiguous-name` if ambiguous).
#[arg(long)]
workspace: bool,
},
/// Lists which symbols each definition calls (statically).
Deps {
path: PathBuf,
/// Only for one symbol; without argument: for all. In workspace
/// mode the name may be in dot notation (`<module>.<def>`).
#[arg(long)]
of: Option<String>,
#[arg(long)]
json: bool,
/// Workspace mode: edges are cross-module aware
/// (`<from-mod>.<from-def> -> <to-mod>.<to-def>`).
#[arg(long)]
workspace: bool,
},
/// Typechecks a module.
Check {
path: PathBuf,
/// Structured diagnostics as a JSON array on stdout.
/// Exit code 1 when at least one error is reported.
#[arg(long)]
json: bool,
},
/// Writes LLVM IR (.ll) for the module.
EmitIr {
path: PathBuf,
#[arg(short, long)]
out: Option<PathBuf>,
},
/// Full pipeline: check + emit-ir + clang -> binary.
Build {
path: PathBuf,
#[arg(short, long)]
out: Option<PathBuf>,
/// Optimization (e.g. `-O2`); default `-O0` for debuggability.
#[arg(long, default_value = "-O0")]
opt: String,
/// Heap allocator. `rc` (default, canonical) routes through
/// `runtime/rc.c`'s `@ailang_rc_alloc` (libc-malloc backing +
/// 8-byte refcount header) with `ailang_rc_inc`/`_dec`
/// instrumentation emitted by codegen; this is the runtime
/// AILang's memory model (RC + uniqueness, Decision 10) is
/// designed for. `gc` retains the Boehm conservative GC path
/// (`@GC_malloc`, libgc); it is kept as a differential parity
/// oracle for codegen diagnosis (Decision 9). `bump` is a
/// bench-only no-free stub from `runtime/bump.c` — it leaks
/// every allocation by design.
#[arg(long, default_value = "rc", value_parser = ["gc", "bump", "rc"])]
alloc: String,
},
/// Build into a tempdir and execute. Exits with the binary's exit code.
/// Convenience wrapper around `build` + invocation of the resulting
/// binary; useful in iteration loops where we don't care about the
/// output artefact's location.
Run {
path: PathBuf,
/// Optimization (e.g. `-O2`); default `-O0` for debuggability.
#[arg(long, default_value = "-O0")]
opt: String,
/// Heap allocator. See `build --alloc` for details. Default `rc`.
#[arg(long, default_value = "rc", value_parser = ["gc", "bump", "rc"])]
alloc: String,
/// Args passed through to the compiled program.
#[arg(last = true)]
args: Vec<String>,
},
/// Lists built-in operations with their signatures.
Builtins {
#[arg(long)]
json: bool,
},
/// Semantic module diff via def hash.
///
/// Compares two modules purely structurally on top-level defs:
/// per name, the hashes of canonical bytes are compared. The
/// diff works even when a module doesn't currently typecheck —
/// only the schema and the JSON form must be loadable.
///
/// Exit code: 0 if no changes (other than `unchanged`), otherwise 1.
Diff {
a: PathBuf,
b: PathBuf,
#[arg(long)]
json: bool,
/// Compares two workspaces (entry modules + transitive imports)
/// module by module. `added_modules`/`removed_modules` for fully
/// added or removed modules, `changed_modules` for modules with
/// a different hash; per changed module, the usual
/// single-module sub-diff structure.
#[arg(long)]
workspace: bool,
},
/// Loads a workspace (entry module + transitive imports) and lists
/// all reachable modules with hash and def count.
///
/// Iter 5a: listing only. Cross-module typecheck/codegen follow in
/// 5b/5c; existing subcommands continue to work per single module.
Workspace {
entry: PathBuf,
#[arg(long)]
json: bool,
},
/// Parses a `.ail` source file (form (A)) into canonical
/// `.ail.json`. Iter 14c addition; symmetric to `render`.
///
/// The form-(A) projection is one of potentially many producers of
/// `Module` values. The JSON-AST remains the source of truth and
/// is what every other subcommand consumes.
Parse {
path: PathBuf,
#[arg(short, long)]
output: Option<PathBuf>,
},
/// Iter 20a: prints the module as human-readable prose (form B).
///
/// One-way projection: the renderer is deterministic, but no
/// parser exists for the prose surface. The canonical authoring
/// surface remains form (A) (`render` / `parse`) and the canonical
/// hashable artefact remains the JSON-AST.
Prose { path: PathBuf },
/// Iter 20d: composes a prompt for the prose-edit round-trip.
///
/// Given the original `.ail.json` and the edited `.prose.txt`,
/// prints a prompt that asks an external LLM to emit an updated
/// `.ail.json` integrating the prose edits. AILang ships no LLM
/// client of its own; the user pipes the prompt to their tool of
/// choice (Claude Code, Anthropic API, OpenAI CLI, etc.) and runs
/// `ail check` on the result.
///
/// See `docs/PROSE_ROUNDTRIP.md` for the full cycle and the
/// rationale for keeping the API client out of scope.
MergeProse {
/// Original `.ail.json` (carries load-bearing detail the prose elides).
original: PathBuf,
/// Edited `.prose.txt` (carries the human's intent).
edited: PathBuf,
},
/// ct.1 (dev-only): rewrite every `*.ail.json` under `<dir>` so
/// that bare cross-module `Type::Con` and `Term::Ctor.type_name`
/// references gain their owning module's qualifier. Idempotent.
///
/// Disambiguation: the first import (in declaration order) that
/// owns a matching type wins. Ties are NOT diagnosed — the
/// migration silently picks the first match. Prelude is consulted
/// as an implicit last-resort fallback when no listed import owns
/// the name.
MigrateCanonicalTypes {
/// Directory containing `*.ail.json` to migrate (typically
/// `examples/`).
dir: PathBuf,
},
}
/// Composes the prose-round-trip prompt described in
/// `docs/PROSE_ROUNDTRIP.md`.
///
/// The three payloads — the AILang Form-A specification, the original
/// module rendered as Form-A, and the edited prose — are inserted
/// verbatim between heredoc-style markers. The rest of the returned
/// string is the role-statement, contract, and output spec that frame
/// the LLM's task.
///
/// Iter 20f rewrote this function: the prompt now embeds
/// [`ailang_core::FORM_A_SPEC`] (the language reference an LLM needs
/// to generate AILang from scratch) and the original module as Form-A
/// (the canonical authoring surface, Decision 6) instead of JSON-AST.
/// JSON-AST stays the canonical hashable artefact, but no human or
/// LLM should write it directly — `ail parse` converts the LLM's
/// Form-A output to JSON.
///
/// Pure: same inputs always yield the same bytes. The CLI wrapper
/// (`Cmd::MergeProse`) is just file-reading + Form-A render + `print!`.
fn compose_merge_prose_prompt(original_form_a: &str, edited_prose: &str) -> String {
// Built with String::push_str rather than format!() because
// `FORM_A_SPEC` contains literal `{` and `}` from embedded JSON
// examples, which would break format!'s placeholder escaping.
let mut out = String::new();
out.push_str(
"You are integrating prose edits back into an AILang module.
ROLE
Your job is to produce an updated AILang module in Form-A (an .ail
file) that reflects the human's prose edits while preserving the
load-bearing semantic detail from the original module.
CONTRACT
The prose is the source of intent: the human edited it to express
what the program should now do. The original Form-A carries
load-bearing detail that the prose surface elides — preserve those
details unless the prose explicitly contradicts them. Specifically:
- Mode annotations on fn parameters (`(own T)`, `(borrow T)`).
These are hard contracts (memory model). The prose shows them
as `own T` / `borrow T`; the Form-A wraps them. If the prose is
ambiguous, default to the original.
- Effect annotations on return types (`(effects IO)`,
`(effects Diverge)`). Prose shows these as `with IO` etc.; if
uncertain, keep what the original had.
- `tail` flags on calls. The prose prints `tail f(x)`; the Form-A
keyword is `(tail-app f x)`. If the edit moved a call, decide
whether the new position is still in tail position.
- Doc strings (`(doc \"...\")` clauses; prose shows them as `///`).
- `(suppress (code ...) (because ...))` clauses (prose shows them
as `// @suppress code: reason`). The `because` MUST be non-empty.
- Constructor names and arities (the prose `Cons(h, t)` must
round-trip to `(term-ctor TYPE Cons h t)` with the right TYPE).
OUTPUT
Output ONLY the new Form-A bytes. No commentary, no markdown fences,
no preamble or postscript. The output must be parseable by
`ail parse` (it will be piped to that command immediately). The first
non-whitespace byte should be `(` (the opening of `(module ...)`)
and the last non-whitespace byte should be `)`.
",
);
out.push_str("FORM-A SPECIFICATION\n");
out.push_str("<<<FORM_A_SPEC\n");
out.push_str(ailang_core::FORM_A_SPEC);
if !ailang_core::FORM_A_SPEC.ends_with('\n') {
out.push('\n');
}
out.push_str("FORM_A_SPEC\n\n");
out.push_str("ORIGINAL MODULE (Form-A)\n");
out.push_str("<<<ORIGINAL_FORM_A\n");
out.push_str(original_form_a);
if !original_form_a.ends_with('\n') {
out.push('\n');
}
out.push_str("ORIGINAL_FORM_A\n\n");
out.push_str("EDITED PROSE\n");
out.push_str("<<<EDITED_PROSE\n");
out.push_str(edited_prose);
if !edited_prose.ends_with('\n') {
out.push('\n');
}
out.push_str("EDITED_PROSE\n\n");
out.push_str("Emit the updated Form-A module now.\n");
out
}
fn main() -> Result<()> {
let cli = Cli::parse();
match cli.cmd {
Cmd::Manifest { path, json, workspace } => {
if workspace {
// Workspace mode: load all modules and emit their defs
// together, alphabetically by (module, name).
let ws = ailang_surface::load_workspace(&path)?;
let mut entries: Vec<(String, &ailang_core::Def)> = Vec::new();
for (mod_name, m) in &ws.modules {
for d in &m.defs {
entries.push((mod_name.clone(), d));
}
}
entries.sort_by(|a, b| {
a.0.cmp(&b.0).then_with(|| a.1.name().cmp(b.1.name()))
});
if json {
let symbols: Vec<_> = entries
.iter()
.map(|(mod_name, d)| {
let (kind, ty, effects) = def_summary(d);
serde_json::json!({
"module": mod_name,
"name": d.name(),
"kind": kind,
"type": ty,
"effects": effects,
"hash": ailang_core::def_hash(d),
})
})
.collect();
let out = serde_json::json!({
"workspace": ws.entry,
"schema": ailang_core::SCHEMA,
"symbols": symbols,
});
println!("{}", serde_json::to_string_pretty(&out)?);
} else {
// Text form: per entry `<module>.<def> :: <type> ![effs] <hash>`.
let label_width = entries
.iter()
.map(|(m, d)| m.len() + 1 + d.name().len())
.max()
.unwrap_or(0);
for (mod_name, d) in &entries {
let (_, ty, effects) = def_summary(d);
let label = format!("{mod_name}.{}", d.name());
let eff = if effects.is_empty() {
String::new()
} else {
format!(" ![{}]", effects.join(","))
};
println!(
"{:<width$} :: {}{} [{}]",
label,
ty,
eff,
ailang_core::def_hash(d),
width = label_width,
);
}
}
} else {
let m = ailang_surface::load_module(&path)?;
if json {
let entries: Vec<_> = m
.defs
.iter()
.map(|d| {
let (kind, ty, effects) = def_summary(d);
serde_json::json!({
"name": d.name(),
"kind": kind,
"type": ty,
"effects": effects,
"hash": ailang_core::def_hash(d),
})
})
.collect();
let out = serde_json::json!({
"module": m.name,
"schema": m.schema,
"symbols": entries,
});
println!("{}", serde_json::to_string_pretty(&out)?);
} else {
print!("{}", ailang_core::pretty::manifest(&m));
}
}
}
Cmd::Render { path } => {
let m = ailang_surface::load_module(&path)?;
print!("{}", ailang_surface::print(&m));
}
Cmd::Prose { path } => {
// Iter 20a: load via `load_module` (single-module mode,
// matching how `render` / `parse` work). Workspace-wide
// prose is not in scope for 20a.
let m = ailang_surface::load_module(&path)?;
print!("{}", ailang_prose::module_to_prose(&m));
}
Cmd::MergeProse { original, edited } => {
// Iter 20f: load the original .ail.json, render it as
// Form-A (the canonical authoring surface, Decision 6),
// and embed *that* in the prompt — not the raw JSON-AST.
// Form-A is the form an LLM should produce; JSON is the
// hashable artefact, not the writing surface. The prose
// file is embedded byte-for-byte.
let module = ailang_surface::load_module(&original)
.with_context(|| format!("loading {}", original.display()))?;
let original_form_a = ailang_surface::print(&module);
let prose = std::fs::read_to_string(&edited)
.with_context(|| format!("reading {}", edited.display()))?;
print!("{}", compose_merge_prose_prompt(&original_form_a, &prose));
}
Cmd::MigrateCanonicalTypes { dir } => {
use ailang_core::ast::{Def, Module};
use std::collections::{BTreeMap, BTreeSet};
use std::fs;
// Pass 1: load every *.ail.json in `dir` into a map by
// module name (NOT via load_workspace — these fixtures
// may currently fail validation).
let mut modules: BTreeMap<String, (PathBuf, Module)> = BTreeMap::new();
for entry in fs::read_dir(&dir)? {
let entry = entry?;
let path = entry.path();
if path.extension().and_then(|s| s.to_str()) != Some("json") {
continue;
}
let bytes = fs::read(&path)?;
let m: Module = match serde_json::from_slice(&bytes) {
Ok(m) => m,
Err(_) => continue, // not a Module (e.g. snapshot files)
};
modules.insert(m.name.clone(), (path, m));
}
// Include the embedded prelude (so the implicit fallback
// matches the loader's behaviour).
let prelude_json: &str = include_str!(
"../../../examples/prelude.ail.json"
);
let prelude: Module = serde_json::from_str(prelude_json)
.expect("embedded prelude must parse");
if !modules.contains_key("prelude") {
modules.insert(
"prelude".to_string(),
(PathBuf::new(), prelude),
);
}
// Pre-pass: per-module local-types index.
let mut local_types: BTreeMap<String, BTreeSet<String>> =
BTreeMap::new();
for (name, (_, m)) in &modules {
let mut s = BTreeSet::new();
for d in &m.defs {
if let Def::Type(t) = d {
s.insert(t.name.clone());
}
}
local_types.insert(name.clone(), s);
}
// Pass 2: rewrite each module's bare cross-module refs.
// Skip the synthetic prelude entry (no path to write to).
let mut rewritten = 0usize;
for (mod_name, (path, m)) in modules.iter_mut() {
if mod_name == "prelude" && path.as_os_str().is_empty() {
continue;
}
let import_names: Vec<String> =
m.imports.iter().map(|i| i.module.clone()).collect();
let owning = mod_name.clone();
let mut changed = false;
for def in &mut m.defs {
rewrite_def(
def,
&owning,
&local_types,
&import_names,
&mut changed,
);
}
if changed {
let bytes = serde_json::to_vec_pretty(m)?;
fs::write(&*path, bytes)?;
println!("migrated: {}", path.display());
rewritten += 1;
}
}
println!("done. {} file(s) rewritten.", rewritten);
}
Cmd::Describe { path, name, json, workspace } => {
if workspace {
let ws = ailang_surface::load_workspace(&path)?;
let (mod_name, def) = resolve_describe_name(&ws, &name)?;
if json {
// We pass the def itself through and add the
// module so consumers know the context.
let mut v = serde_json::to_value(def)?;
if let Some(obj) = v.as_object_mut() {
obj.insert(
"module".to_string(),
serde_json::Value::String(mod_name.clone()),
);
obj.insert(
"hash".to_string(),
serde_json::Value::String(ailang_core::def_hash(def)),
);
}
println!("{}", serde_json::to_string_pretty(&v)?);
} else {
let m = ws.modules.get(&mod_name).unwrap();
let one = ailang_core::Module {
schema: m.schema.clone(),
name: m.name.clone(),
imports: vec![],
defs: vec![def.clone()],
};
let h = ailang_core::def_hash(def);
println!("module: {}", mod_name);
println!("hash: {h}");
print!("{}", ailang_surface::print(&one));
}
} else {
let m = ailang_surface::load_module(&path)?;
let def = m
.defs
.iter()
.find(|d| d.name() == name)
.with_context(|| format!("no def `{name}` in module `{}`", m.name))?;
if json {
let s = serde_json::to_string_pretty(def)?;
println!("{s}");
} else {
// Form-(A) projection of a one-def module.
let one = ailang_core::Module {
schema: m.schema.clone(),
name: m.name.clone(),
imports: vec![],
defs: vec![def.clone()],
};
let h = ailang_core::def_hash(def);
println!("hash: {h}");
print!("{}", ailang_surface::print(&one));
}
}
}
Cmd::Check { path, json } => {
// Iter 5b: `ail check` now **always** loads via
// `load_workspace` and checks cross-module. For modules
// without imports, the workspace loader behaves equivalently
// to `load_module` plus a hash consistency check of the
// entry file — keeping the path uniform.
if json {
// JSON mode: stdout contains only the diagnostics
// array. Workspace load errors are emitted as structured
// diagnostics (codes `module-not-found`,
// `module-cycle`, `module-name-mismatch`, `schema-mismatch`).
// Real I/O errors on the entry file remain fatal.
let diags = match ailang_surface::load_workspace(&path) {
Ok(ws) => ailang_check::check_workspace(&ws),
Err(e) => match workspace_error_to_diagnostic(&e) {
Some(d) => vec![d],
None => return Err(anyhow::anyhow!(e)),
},
};
println!("{}", serde_json::to_string(&diags)?);
if diags
.iter()
.any(|d| matches!(d.severity, ailang_check::Severity::Error))
{
std::process::exit(1);
}
} else {
let ws = ailang_surface::load_workspace(&path)?;
let diags = ailang_check::check_workspace(&ws);
if !diags.is_empty() {
for d in &diags {
eprintln!(
"{}: [{}] {}{}",
match d.severity {
ailang_check::Severity::Error => "error",
ailang_check::Severity::Warning => "warning",
},
d.code,
d.def
.as_ref()
.map(|n| format!("{n}: "))
.unwrap_or_default(),
d.message,
);
}
// Iter 19a: only Error-severity diagnostics fail the
// command. Warning-severity diagnostics (e.g. the
// `over-strict-mode` lint) print to stderr but the
// module is still considered to have typechecked.
if diags
.iter()
.any(|d| matches!(d.severity, ailang_check::Severity::Error))
{
std::process::exit(1);
}
}
let total: usize = ws.modules.values().map(|m| m.defs.len()).sum();
println!(
"ok ({} symbols across {} modules)",
total,
ws.modules.len()
);
}
}
Cmd::EmitIr { path, out } => {
// Iter 5c: workspace lowering. For single-module programs the
// workspace is effectively a trivial workspace with one module.
let ws = ailang_surface::load_workspace(&path)?;
let diags = ailang_check::check_workspace(&ws);
if !diags.is_empty() {
for d in &diags {
eprintln!(
"{}: [{}] {}{}",
match d.severity {
ailang_check::Severity::Error => "error",
ailang_check::Severity::Warning => "warning",
},
d.code,
d.def
.as_ref()
.map(|n| format!("{n}: "))
.unwrap_or_default(),
d.message,
);
}
// Iter 19a: only Error-severity blocks codegen.
if diags
.iter()
.any(|d| matches!(d.severity, ailang_check::Severity::Error))
{
std::process::exit(1);
}
}
// Iter 23.4: emit-ir must run the same pre-codegen pipeline
// as `build` — `lift_letrecs` per module, then
// `monomorphise_workspace`. Pre-iter-23.4 this was implicit:
// codegen's poly-call path handled specialisation internally.
// With that path removed, emit-ir must produce the
// post-mono workspace explicitly, same shape as `build`.
let mut lifted_modules = std::collections::BTreeMap::new();
for (mname, m) in &ws.modules {
let desugared = ailang_core::desugar::desugar_module(m);
let lifted = ailang_check::lift_letrecs(&desugared)
.map_err(|e| anyhow::anyhow!("lift_letrecs in module `{mname}`: {e}"))?;
lifted_modules.insert(mname.clone(), lifted);
}
let ws = ailang_core::Workspace {
entry: ws.entry.clone(),
modules: lifted_modules,
root_dir: ws.root_dir.clone(),
registry: ws.registry.clone(),
};
let ws = ailang_check::monomorphise_workspace(&ws)
.map_err(|e| anyhow::anyhow!("monomorphise_workspace: {e}"))?;
let ir = ailang_codegen::lower_workspace(&ws)?;
match out {
Some(p) => {
std::fs::write(&p, ir)?;
eprintln!("wrote {}", p.display());
}
None => print!("{ir}"),
}
}
Cmd::Build { path, out, opt, alloc } => {
let strategy = parse_alloc_strategy(&alloc)?;
let bin = build_to(&path, out, &opt, strategy)?;
eprintln!("built {}", bin.display());
}
Cmd::Run { path, opt, alloc, args } => {
// Iter 9b: build into a fresh tempdir per run, exec, propagate
// exit code. The artefact dir is left around (no cleanup) so
// it can be inspected in case of a crash; OS temp policy
// collects them.
let strategy = parse_alloc_strategy(&alloc)?;
let tmpdir = std::env::temp_dir().join(format!(
"ailang-run-{}",
std::process::id()
));
std::fs::create_dir_all(&tmpdir)?;
let bin = build_to(&path, Some(tmpdir.join("bin")), &opt, strategy)?;
let status = std::process::Command::new(&bin)
.args(&args)
.status()
.with_context(|| format!("executing {}", bin.display()))?;
std::process::exit(status.code().unwrap_or(127));
}
Cmd::Builtins { json } => {
let list = ailang_check::builtins::list();
if json {
let arr: Vec<_> = list
.iter()
.map(|(n, s)| serde_json::json!({ "name": n, "sig": s }))
.collect();
println!("{}", serde_json::to_string_pretty(&arr)?);
} else {
for (n, sig) in list {
println!("{n:<16} {sig}");
}
}
}
Cmd::Diff { a, b, json, workspace } => {
if workspace {
let ws_a = ailang_surface::load_workspace(&a)?;
let ws_b = ailang_surface::load_workspace(&b)?;
let report = build_workspace_diff(&ws_a, &ws_b);
if json {
let v = workspace_diff_report_to_json(&report);
println!("{}", serde_json::to_string_pretty(&v)?);
} else {
print!("{}", render_workspace_diff_text(&report));
}
if !report.is_identical() {
std::process::exit(1);
}
} else {
let ma = ailang_surface::load_module(&a)?;
let mb = ailang_surface::load_module(&b)?;
let report = build_diff(&ma, &mb);
if json {
let v = diff_report_to_json(&report);
println!("{}", serde_json::to_string_pretty(&v)?);
} else {
print!("{}", render_diff_text(&report));
}
if !report.is_identical() {
std::process::exit(1);
}
}
}
Cmd::Workspace { entry, json } => {
let ws = ailang_surface::load_workspace(&entry)?;
// Iterate alphabetically over module names (BTreeMap order
// is already sorted; assert it explicitly).
let mut entries: Vec<(String, String, usize)> = ws
.modules
.iter()
.map(|(name, m)| {
(
name.clone(),
ailang_core::module_hash(m),
m.defs.len(),
)
})
.collect();
entries.sort_by(|a, b| a.0.cmp(&b.0));
if json {
let arr: Vec<_> = entries
.iter()
.map(|(name, hash, defs)| {
serde_json::json!({
"name": name,
"hash": hash,
"defs": defs,
})
})
.collect();
let out = serde_json::json!({
"entry": ws.entry,
"modules": arr,
});
println!("{}", serde_json::to_string_pretty(&out)?);
} else {
// Align column width to the longest module name. The
// first column marks the entry module with `*`.
let name_width = entries
.iter()
.map(|(n, _, _)| n.len())
.max()
.unwrap_or(0)
.max(6);
println!("entry: {}", ws.entry);
for (name, hash, defs) in &entries {
let marker = if *name == ws.entry { "*" } else { " " };
println!(
"{marker} {:<width$} {} {:>3} defs",
name,
hash,
defs,
width = name_width,
);
}
}
}
Cmd::Parse { path, output } => {
// Read .ail, parse via the surface crate, emit canonical
// JSON. Symmetric to `render` (which goes the other way).
let src = std::fs::read_to_string(&path)
.with_context(|| format!("reading {}", path.display()))?;
let module = match ailang_surface::parse(&src) {
Ok(m) => m,
Err(e) => {
eprintln!("parse error: {e}");
std::process::exit(1);
}
};
let bytes = ailang_core::canonical::to_bytes(&module);
match output {
Some(p) => {
std::fs::write(&p, &bytes)?;
eprintln!("wrote {}", p.display());
}
None => {
use std::io::Write;
std::io::stdout().write_all(&bytes)?;
println!();
}
}
}
Cmd::Deps { path, of, json, workspace } => {
if workspace {
let ws = ailang_surface::load_workspace(&path)?;
// `--of NAME`: optional, accepts dot notation
// (`<module>.<def>`) or a bare name (matches in all
// modules where the def exists).
let of_filter: Option<(Option<String>, String)> = of.as_ref().map(|s| {
if let Some(idx) = s.find('.') {
let m = s[..idx].to_string();
let d = s[idx + 1..].to_string();
(Some(m), d)
} else {
(None, s.clone())
}
});
// Collect edges: (from_module, from_def, target).
// `target` is either `Edge::Def { to_module, to_def }`
// or `Edge::Effect(eff/op)`.
let mut def_edges: Vec<(String, String, String, String)> = Vec::new();
let mut effect_edges: Vec<(String, String, String)> = Vec::new();
for (mod_name, m) in &ws.modules {
// Import map of the module — needed for cross-module resolution.
let import_map = build_import_map(m);
for d in &m.defs {
if let Some((mf, df)) = &of_filter {
if d.name() != df {
continue;
}
if let Some(mf) = mf {
if mod_name != mf {
continue;
}
}
}
let refs = collect_refs(d);
for r in &refs {
// Effect refs are encoded as `effect:<eff>/<op>`
// (see `walk_term`).
if let Some(rest) = r.strip_prefix("effect:") {
effect_edges.push((
mod_name.clone(),
d.name().to_string(),
rest.to_string(),
));
continue;
}
// ctor:* / type:* — no cross-module defs at the
// MVP language stage; pass through as an opaque
// marker with empty to_module.
if r.starts_with("ctor:") || r.starts_with("type:") {
def_edges.push((
mod_name.clone(),
d.name().to_string(),
String::new(),
r.clone(),
));
continue;
}
// Var ref: can be local or qualified (`pre.def`).
if let Some(idx) = r.find('.') {
let pre = &r[..idx];
let to_def = &r[idx + 1..];
let to_module = import_map
.get(pre)
.cloned()
.unwrap_or_else(|| pre.to_string());
def_edges.push((
mod_name.clone(),
d.name().to_string(),
to_module,
to_def.to_string(),
));
} else {
// Local reference — stays in the same module.
def_edges.push((
mod_name.clone(),
d.name().to_string(),
mod_name.clone(),
r.clone(),
));
}
}
}
}
def_edges.sort();
effect_edges.sort();
if json {
let mut edges_json: Vec<serde_json::Value> = Vec::new();
for (fm, fd, tm, td) in &def_edges {
edges_json.push(serde_json::json!({
"from_module": fm,
"from_def": fd,
"to_module": tm,
"to_def": td,
}));
}
for (fm, fd, eff) in &effect_edges {
edges_json.push(serde_json::json!({
"from_module": fm,
"from_def": fd,
"effect": eff,
}));
}
let out = serde_json::json!({
"workspace": ws.entry,
"edges": edges_json,
});
println!("{}", serde_json::to_string_pretty(&out)?);
} else {
for (fm, fd, tm, td) in &def_edges {
if tm.is_empty() {
println!("{fm}.{fd} -> {td}");
} else {
println!("{fm}.{fd} -> {tm}.{td}");
}
}
for (fm, fd, eff) in &effect_edges {
println!("{fm}.{fd} -> effect:{eff}");
}
}
} else {
let m = ailang_surface::load_module(&path)?;
let mut entries = Vec::new();
for d in &m.defs {
if let Some(filter) = &of {
if d.name() != filter {
continue;
}
}
let mut refs: Vec<String> = collect_refs(d).into_iter().collect();
refs.sort();
entries.push((d.name().to_string(), refs));
}
if json {
let arr: Vec<_> = entries
.iter()
.map(|(n, r)| serde_json::json!({ "name": n, "refs": r }))
.collect();
println!("{}", serde_json::to_string_pretty(&arr)?);
} else {
for (n, refs) in entries {
if refs.is_empty() {
println!("{n:>20} -");
} else {
println!("{n:>20} -> {}", refs.join(", "));
}
}
}
}
}
}
Ok(())
}
/// Converts a `WorkspaceLoadError` into a suitable diagnostic for the
/// JSON mode of `ail check`. Pure I/O errors have no module diagnostic
/// equivalent (they aren't the pipeline's concern for a consumer); for
/// those we return `None` and let the caller fail fatally.
fn workspace_error_to_diagnostic(
e: &ailang_core::WorkspaceLoadError,
) -> Option<ailang_check::Diagnostic> {
use ailang_core::WorkspaceLoadError as W;
match e {
W::Io { .. } => None,
W::Schema { source, .. } => match source {
ailang_core::Error::SchemaMismatch { expected, got } => Some(
ailang_check::Diagnostic::error(
"schema-mismatch",
format!(
"schema mismatch: expected {expected:?}, got {got:?}"
),
)
.with_ctx(serde_json::json!({
"expected": expected,
"actual": got,
})),
),
_ => None,
},
W::ModuleNotFound { name, expected_path } => Some(
ailang_check::Diagnostic::error(
"module-not-found",
format!(
"module `{name}` not found (expected at {})",
expected_path.display()
),
)
.with_ctx(serde_json::json!({
"module": name,
"expected_path": expected_path.display().to_string(),
})),
),
W::ModuleNameMismatch {
name_in_file,
name_from_path,
} => Some(
ailang_check::Diagnostic::error(
"module-name-mismatch",
format!(
"module name mismatch: file says {name_in_file:?}, path implies {name_from_path:?}"
),
)
.with_ctx(serde_json::json!({
"name_in_file": name_in_file,
"name_from_path": name_from_path,
})),
),
W::Cycle { path } => Some(
ailang_check::Diagnostic::error(
"module-cycle",
format!("import cycle: {}", path.join(" -> ")),
)
.with_ctx(serde_json::json!({
"path": path,
})),
),
W::ModuleHashMismatch { name } => Some(
ailang_check::Diagnostic::error(
"module-hash-mismatch",
format!("module `{name}` loaded twice with differing content"),
)
.with_ctx(serde_json::json!({
"module": name,
})),
),
// Iter 22b.1: typeclass-coherence diagnostics emitted from
// `workspace::build_registry`. The codes follow the JOURNAL
// queue's wording and Decision 11 §"Diagnostic categories".
W::OrphanInstance {
class,
type_repr,
defining_module,
class_module,
type_module,
} => Some(
ailang_check::Diagnostic::error(
"orphan-instance",
format!(
"orphan instance: `instance {class} {type_repr}` declared in `{defining_module}`, \
but neither `{class}` (in `{class_module}`) nor `{type_repr}` (in `{type_module}`) lives there"
),
)
.with_ctx(serde_json::json!({
"class": class,
"type": type_repr,
"defining_module": defining_module,
"class_module": class_module,
"type_module": type_module,
})),
),
W::DuplicateInstance {
class,
type_repr,
first_module,
second_module,
} => Some(
ailang_check::Diagnostic::error(
"duplicate-instance",
format!(
"duplicate instance: `instance {class} {type_repr}` declared in both `{first_module}` and `{second_module}`"
),
)
.with_ctx(serde_json::json!({
"class": class,
"type": type_repr,
"first_module": first_module,
"second_module": second_module,
})),
),
W::MissingMethod {
class,
type_repr,
method,
} => Some(
ailang_check::Diagnostic::error(
"missing-method",
format!(
"instance `{class} {type_repr}` is missing a body for method `{method}` (no default)"
),
)
.with_ctx(serde_json::json!({
"class": class,
"type": type_repr,
"method": method,
})),
),
W::OverridingNonExistentMethod {
class,
type_repr,
method,
} => Some(
ailang_check::Diagnostic::error(
"overriding-non-existent-method",
format!(
"instance `{class} {type_repr}` provides body for method `{method}`, but class `{class}` does not declare it"
),
)
.with_ctx(serde_json::json!({
"class": class,
"type": type_repr,
"method": method,
})),
),
W::KindMismatch {
class,
param,
method,
defining_module,
} => Some(
ailang_check::Diagnostic::error(
"kind-mismatch",
format!(
"kind mismatch in class `{class}`: parameter `{param}` is used in applied position \
inside method `{method}` (Decision 11 axis 5: class params are kind `*` only)"
),
)
.with_ctx(serde_json::json!({
"class": class,
"param": param,
"method": method,
"defining_module": defining_module,
})),
),
W::InvalidSuperclassParam {
class,
superclass,
expected_param,
got_type,
} => Some(
ailang_check::Diagnostic::error(
"invalid-superclass-param",
format!(
"class `{class}` declares superclass `{superclass} {got_type}`, but its own parameter is `{expected_param}` — superclass `type` must equal class `param`"
),
)
.with_ctx(serde_json::json!({
"class": class,
"superclass": superclass,
"expected_param": expected_param,
"got_type": got_type,
})),
),
W::UnboundConstraintTypeVar {
class,
method,
constraint_class,
var,
} => Some(
ailang_check::Diagnostic::error(
"constraint-references-unbound-type-var",
format!(
"in class `{class}` method `{method}`: constraint `{constraint_class} {var}` references unbound type variable `{var}`"
),
)
.with_ctx(serde_json::json!({
"class": class,
"method": method,
"constraint_class": constraint_class,
"var": var,
})),
),
W::MethodNameCollision {
method,
kind,
first_origin,
second_origin,
} => Some(
ailang_check::Diagnostic::error(
"method-name-collision",
format!(
"method name `{method}` collides ({kind}): defined in `{first_origin}` and `{second_origin}`"
),
)
.with_ctx(serde_json::json!({
"method": method,
"kind": kind,
"first_origin": first_origin,
"second_origin": second_origin,
})),
),
W::MissingSuperclassInstance {
class,
superclass,
type_repr,
} => Some(
ailang_check::Diagnostic::error(
"missing-superclass-instance",
format!(
"instance `{class} {type_repr}` requires superclass instance `{superclass} {type_repr}`, but none was found"
),
)
.with_ctx(serde_json::json!({
"class": class,
"superclass": superclass,
"type": type_repr,
})),
),
// Iter 23.1: the user named a module `prelude`, which the
// loader reserves for the auto-injected prelude module.
W::ReservedModuleName { name } => Some(
ailang_check::Diagnostic::error(
"reserved-module-name",
format!(
"module name {name:?} is reserved (auto-injected by the loader)"
),
)
.with_ctx(serde_json::json!({
"module": name,
})),
),
// ct.1 (canonical-type-names): bare `Type::Con` that does not
// resolve to a primitive or a local TypeDef of the owning
// module. `candidates` lists qualified suggestions scanned
// from imports.
W::BareCrossModuleTypeRef { module, name, candidates } => Some(
ailang_check::Diagnostic::error(
"bare-cross-module-type-ref",
format!(
"module `{module}` contains bare type name `{name}` that does not resolve to a local type; \
candidates from imports: {candidates:?}"
),
)
.with_ctx(serde_json::json!({
"module": module,
"name": name,
"candidates": candidates,
})),
),
// ct.1: qualified `<owner>.<type>` where `<owner>` is not a
// known module or `<owner>` has no `TypeDef <type>`.
W::BadCrossModuleTypeRef { module, name } => Some(
ailang_check::Diagnostic::error(
"bad-cross-module-type-ref",
format!(
"module `{module}` references qualified type `{name}` but the owner module is not known \
or does not declare a type by that name"
),
)
.with_ctx(serde_json::json!({
"module": module,
"name": name,
})),
),
// ct.1: a class-reference field contains a `.` — class names
// are not module-qualified in this milestone.
W::QualifiedClassName { module, name, field } => Some(
ailang_check::Diagnostic::error(
"qualified-class-name",
format!(
"module `{module}` contains qualified class name `{name}` in field `{field}`; \
class names are not module-qualified in this milestone"
),
)
.with_ctx(serde_json::json!({
"module": module,
"name": name,
"field": field,
})),
),
// ext-cli.1: surface-side parse failure on a `.ail` (Form A)
// source file. Routed through the same `Diagnostic` channel as
// schema/coherence errors so `ail check --json foo.ail` on a
// broken `.ail` returns a parseable JSON array instead of the
// misleading JSON-parse fall-through.
W::SurfaceParse { path, message } => Some(
ailang_check::Diagnostic::error(
"surface-parse-error",
message.clone(),
)
.with_ctx(serde_json::json!({
"path": path.display().to_string(),
})),
),
}
}
/// Collects the *external* references of a definition: everything its body
/// depends on that lives outside the def itself. Filtered out:
///
/// - **Built-ins** (`+`, `-`, `==`, `not`, …): operators provided by the
/// runtime, not the user. The list is owned by `ailang_check::builtins`.
/// - **Parameters** of the surrounding `fn`.
/// - **Local bindings** introduced by `let` and by pattern variables in
/// `match` arms.
///
/// Cross-module references (`<prefix>.<def>`) are always kept — a local
/// binding can never shadow a dotted name (the typechecker rejects defs
/// with a dot, see DESIGN.md "qualified cross-module references").
fn collect_refs(def: &ailang_core::Def) -> std::collections::BTreeSet<String> {
let mut out = std::collections::BTreeSet::new();
let builtins: std::collections::HashSet<&'static str> =
ailang_check::builtins::value_names().into_iter().collect();
match def {
ailang_core::Def::Fn(f) => {
let mut scope: std::collections::HashSet<String> =
f.params.iter().cloned().collect();
walk_term(&f.body, &mut out, &builtins, &mut scope);
}
ailang_core::Def::Const(c) => {
let mut scope = std::collections::HashSet::new();
walk_term(&c.value, &mut out, &builtins, &mut scope);
}
ailang_core::Def::Type(td) => {
// A type def references the types of its fields.
for c in &td.ctors {
for ft in &c.fields {
if let ailang_core::Type::Con { name, .. } = ft {
out.insert(format!("type:{name}"));
}
}
}
}
// Iter 22b.1: `ail deps` does not yet trace references inside
// class/instance defs. Walking method signatures and bodies
// (default bodies, instance method bodies) lands in 22b.2 along
// with the typecheck arms — until then a class/instance def
// contributes no entries to the dependency graph. Tools that
// call `collect_refs` (`ail deps`, the cross-module-fan-out
// diagnostics) therefore treat them as leaves.
ailang_core::Def::Class(_) | ailang_core::Def::Instance(_) => {}
}
out
}
fn walk_term(
t: &ailang_core::Term,
out: &mut std::collections::BTreeSet<String>,
builtins: &std::collections::HashSet<&'static str>,
scope: &mut std::collections::HashSet<String>,
) {
use ailang_core::Term;
match t {
Term::Lit { .. } => {}
Term::Var { name } => {
// Qualified (`prefix.def`) — always external; the typechecker
// forbids dots in def names, so no shadowing risk.
if name.contains('.') {
out.insert(name.clone());
return;
}
if scope.contains(name) || builtins.contains(name.as_str()) {
return;
}
out.insert(name.clone());
}
Term::App { callee, args, .. } => {
walk_term(callee, out, builtins, scope);
for a in args {
walk_term(a, out, builtins, scope);
}
}
Term::Let { name, value, body } => {
// `value` is in the outer scope; only `body` sees the binding.
walk_term(value, out, builtins, scope);
let inserted = scope.insert(name.clone());
walk_term(body, out, builtins, scope);
if inserted {
scope.remove(name);
}
}
Term::If { cond, then, else_ } => {
walk_term(cond, out, builtins, scope);
walk_term(then, out, builtins, scope);
walk_term(else_, out, builtins, scope);
}
Term::Do { op, args, .. } => {
// Mark effect ops as `effect:io/print_int` so they can be
// separated from normal function calls.
out.insert(format!("effect:{op}"));
for a in args {
walk_term(a, out, builtins, scope);
}
}
Term::Ctor { type_name, ctor, args } => {
out.insert(format!("ctor:{type_name}/{ctor}"));
for a in args {
walk_term(a, out, builtins, scope);
}
}
Term::Match { scrutinee, arms } => {
walk_term(scrutinee, out, builtins, scope);
for arm in arms {
if let ailang_core::ast::Pattern::Ctor { ctor, .. } = &arm.pat {
out.insert(format!("ctor:{ctor}"));
}
let bound = bind_pattern(&arm.pat, scope);
walk_term(&arm.body, out, builtins, scope);
for n in bound {
scope.remove(&n);
}
}
}
Term::Lam { params, body, .. } => {
// Lambda params shadow outer scope inside the body.
let mut newly = Vec::new();
for p in params {
if scope.insert(p.clone()) {
newly.push(p.clone());
}
}
walk_term(body, out, builtins, scope);
for p in newly {
scope.remove(&p);
}
}
Term::Seq { lhs, rhs } => {
walk_term(lhs, out, builtins, scope);
walk_term(rhs, out, builtins, scope);
}
Term::LetRec { name, params, body, in_term, .. } => {
// Iter 16b.1: `deps` walks the on-disk module before the
// desugar pass, so a `Term::LetRec` is reachable here.
// Treat it like a fn def for dependency purposes:
// `name` shadows for both body and in_term; params shadow
// inside the body.
let inserted_name = scope.insert(name.clone());
let mut newly = Vec::new();
for p in params {
if scope.insert(p.clone()) {
newly.push(p.clone());
}
}
walk_term(body, out, builtins, scope);
for p in newly {
scope.remove(&p);
}
walk_term(in_term, out, builtins, scope);
if inserted_name {
scope.remove(name);
}
}
Term::Clone { value } => {
// Iter 18c.1: clone is identity for dependency-walk
// purposes. The wrapper introduces no new symbols.
walk_term(value, out, builtins, scope);
}
Term::ReuseAs { source, body } => {
// Iter 18d.1: walk both children; the wrapper introduces no
// new bindings of its own.
walk_term(source, out, builtins, scope);
walk_term(body, out, builtins, scope);
}
}
}
/// Adds the variable bindings introduced by a pattern to `scope` and
/// returns the names that were freshly inserted (so the caller can roll
/// them back). MVP-restricted: nested ctor patterns only contain
/// `Var`/`Wild` — see DESIGN.md.
fn bind_pattern(
p: &ailang_core::ast::Pattern,
scope: &mut std::collections::HashSet<String>,
) -> Vec<String> {
use ailang_core::ast::Pattern;
let mut added = Vec::new();
match p {
Pattern::Wild | Pattern::Lit { .. } => {}
Pattern::Var { name } => {
if scope.insert(name.clone()) {
added.push(name.clone());
}
}
Pattern::Ctor { fields, .. } => {
for sub in fields {
added.extend(bind_pattern(sub, scope));
}
}
}
added
}
// --- ail diff -------------------------------------------------------------
/// Purely structural module diff. Top-level defs are identified by
/// `name` and compared via the BLAKE3-16-hex of the canonical bytes.
struct DiffReport {
module_a: String,
module_b: String,
added: Vec<DiffEntry>,
removed: Vec<DiffEntry>,
changed: Vec<ChangedEntry>,
unchanged: Vec<DiffEntry>,
}
struct DiffEntry {
name: String,
hash: String,
kind: &'static str,
}
struct ChangedEntry {
name: String,
hash_a: String,
hash_b: String,
kind_a: &'static str,
kind_b: &'static str,
}
impl DiffReport {
fn is_identical(&self) -> bool {
self.added.is_empty() && self.removed.is_empty() && self.changed.is_empty()
}
}
fn build_diff(a: &ailang_core::Module, b: &ailang_core::Module) -> DiffReport {
let (added, removed, changed, unchanged) = diff_def_lists(&a.defs, &b.defs);
DiffReport {
module_a: a.name.clone(),
module_b: b.name.clone(),
added,
removed,
changed,
unchanged,
}
}
/// Pure list-diff computation for two def slices. Used both by the
/// single-module diff and — per `changed_module` — by the workspace diff,
/// so the 4-category logic lives in only one place.
fn diff_def_lists(
a_defs: &[ailang_core::Def],
b_defs: &[ailang_core::Def],
) -> (Vec<DiffEntry>, Vec<DiffEntry>, Vec<ChangedEntry>, Vec<DiffEntry>) {
use std::collections::BTreeMap;
let map_a: BTreeMap<&str, &ailang_core::Def> = a_defs
.iter()
.map(|d| (ailang_core::def_name(d), d))
.collect();
let map_b: BTreeMap<&str, &ailang_core::Def> = b_defs
.iter()
.map(|d| (ailang_core::def_name(d), d))
.collect();
let mut added = Vec::new();
let mut removed = Vec::new();
let mut changed = Vec::new();
let mut unchanged = Vec::new();
for (name, def_a) in &map_a {
let hash_a = ailang_core::def_hash(def_a);
let kind_a = ailang_core::def_kind(def_a);
match map_b.get(*name) {
None => removed.push(DiffEntry {
name: (*name).to_string(),
hash: hash_a,
kind: kind_a,
}),
Some(def_b) => {
let hash_b = ailang_core::def_hash(def_b);
let kind_b = ailang_core::def_kind(def_b);
if hash_a == hash_b {
unchanged.push(DiffEntry {
name: (*name).to_string(),
hash: hash_a,
kind: kind_a,
});
} else {
changed.push(ChangedEntry {
name: (*name).to_string(),
hash_a,
hash_b,
kind_a,
kind_b,
});
}
}
}
}
for (name, def_b) in &map_b {
if !map_a.contains_key(*name) {
added.push(DiffEntry {
name: (*name).to_string(),
hash: ailang_core::def_hash(def_b),
kind: ailang_core::def_kind(def_b),
});
}
}
added.sort_by(|x, y| x.name.cmp(&y.name));
removed.sort_by(|x, y| x.name.cmp(&y.name));
changed.sort_by(|x, y| x.name.cmp(&y.name));
unchanged.sort_by(|x, y| x.name.cmp(&y.name));
(added, removed, changed, unchanged)
}
fn diff_report_to_json(r: &DiffReport) -> serde_json::Value {
let entry = |e: &DiffEntry| {
serde_json::json!({
"name": e.name,
"hash": e.hash,
"kind": e.kind,
})
};
let changed = |c: &ChangedEntry| {
serde_json::json!({
"name": c.name,
"hash_a": c.hash_a,
"hash_b": c.hash_b,
"kind_a": c.kind_a,
"kind_b": c.kind_b,
})
};
serde_json::json!({
"module_a": r.module_a,
"module_b": r.module_b,
"added": r.added.iter().map(entry).collect::<Vec<_>>(),
"removed": r.removed.iter().map(entry).collect::<Vec<_>>(),
"changed": r.changed.iter().map(changed).collect::<Vec<_>>(),
"unchanged": r.unchanged.iter().map(entry).collect::<Vec<_>>(),
})
}
fn render_diff_text(r: &DiffReport) -> String {
use std::fmt::Write;
let mut out = String::new();
let _ = writeln!(out, "diff: {} -> {}", r.module_a, r.module_b);
if r.is_identical() && r.unchanged.is_empty() {
let _ = writeln!(out, "no changes");
return out;
}
// Uniform column width for the name/kind column so hashes line up
// visually. The longest name sets the width.
let name_width = r
.added
.iter()
.map(|e| e.name.len())
.chain(r.removed.iter().map(|e| e.name.len()))
.chain(r.changed.iter().map(|e| e.name.len()))
.chain(r.unchanged.iter().map(|e| e.name.len()))
.max()
.unwrap_or(0);
for e in &r.added {
let _ = writeln!(
out,
"+ {:<width$} ({}) {}",
e.name,
e.kind,
e.hash,
width = name_width
);
}
for e in &r.removed {
let _ = writeln!(
out,
"- {:<width$} ({}) {}",
e.name,
e.kind,
e.hash,
width = name_width
);
}
for c in &r.changed {
// If the kind changed (e.g. const → fn), show both.
let kind = if c.kind_a == c.kind_b {
c.kind_a.to_string()
} else {
format!("{} -> {}", c.kind_a, c.kind_b)
};
let _ = writeln!(
out,
"~ {:<width$} ({}) {} -> {}",
c.name,
kind,
c.hash_a,
c.hash_b,
width = name_width
);
}
for e in &r.unchanged {
let _ = writeln!(
out,
" {:<width$} ({}) {} (unchanged)",
e.name,
e.kind,
e.hash,
width = name_width
);
}
out
}
// --- Workspace-aware helpers (Iter 5d) ------------------------------------
/// Compact summary of a def for manifest output (single and workspace
/// mode share this helper). Returns (kind, type-string, effects).
fn def_summary(d: &ailang_core::Def) -> (&'static str, String, Vec<String>) {
match d {
ailang_core::Def::Fn(f) => {
let effects = match &f.ty {
ailang_core::Type::Fn { effects, .. } => effects.clone(),
_ => vec![],
};
("fn", ailang_core::pretty::type_to_string(&f.ty), effects)
}
ailang_core::Def::Const(c) => (
"const",
ailang_core::pretty::type_to_string(&c.ty),
vec![],
),
ailang_core::Def::Type(t) => {
let s = t
.ctors
.iter()
.map(|c| {
if c.fields.is_empty() {
c.name.clone()
} else {
format!(
"{}({})",
c.name,
c.fields
.iter()
.map(ailang_core::pretty::type_to_string)
.collect::<Vec<_>>()
.join(", ")
)
}
})
.collect::<Vec<_>>()
.join(" | ");
("type", s, vec![])
}
// Iter 22b.1: a one-line `class C a` / `instance C T` summary
// for `ail manifest`. The `effects` slot is empty for both —
// class methods carry their own effect annotations on each
// method signature, but the class itself does not (it is a
// collection of method signatures, not a single function).
ailang_core::Def::Class(c) => (
"class",
format!("{} {}", c.name, c.param),
vec![],
),
ailang_core::Def::Instance(i) => (
"instance",
format!(
"{} {}",
i.class,
ailang_core::pretty::type_to_string(&i.type_)
),
vec![],
),
}
}
/// Resolution for `ail describe --workspace <name>`.
///
/// 1. `name` contains exactly one dot → resolve `<module>.<def>` strictly.
/// 2. Otherwise search the entry module first; fall back to other modules
/// only if nothing there. Multiple hits produce `ambiguous-name`.
fn resolve_describe_name<'ws>(
ws: &'ws ailang_core::Workspace,
name: &str,
) -> Result<(String, &'ws ailang_core::Def)> {
if let Some(idx) = name.find('.') {
let mod_name = &name[..idx];
let def_name = &name[idx + 1..];
let m = ws.modules.get(mod_name).with_context(|| {
format!("no module `{mod_name}` in workspace `{}`", ws.entry)
})?;
let def = m
.defs
.iter()
.find(|d| d.name() == def_name)
.with_context(|| {
format!("no def `{def_name}` in module `{mod_name}`")
})?;
return Ok((mod_name.to_string(), def));
}
// Bare name: entry module first.
if let Some(entry_mod) = ws.modules.get(&ws.entry) {
if let Some(def) = entry_mod.defs.iter().find(|d| d.name() == name) {
return Ok((ws.entry.clone(), def));
}
}
// Fallback: collect all modules; error on ambiguity.
let mut hits: Vec<(String, &ailang_core::Def)> = Vec::new();
for (mod_name, m) in &ws.modules {
if mod_name == &ws.entry {
continue;
}
for d in &m.defs {
if d.name() == name {
hits.push((mod_name.clone(), d));
}
}
}
match hits.len() {
0 => Err(anyhow::anyhow!(
"no def `{name}` in workspace `{}`",
ws.entry
)),
1 => Ok(hits.into_iter().next().unwrap()),
_ => {
let modules: Vec<String> =
hits.iter().map(|(m, _)| m.clone()).collect();
Err(anyhow::anyhow!(
"[ambiguous-name] def `{name}` exists in multiple modules: {}",
modules.join(", ")
))
}
}
}
/// Map `<prefix> -> <module-name>` for a single module. `<prefix>` is
/// the import alias if set, otherwise the module name itself. Module name
/// without a dot.
fn build_import_map(m: &ailang_core::Module) -> std::collections::BTreeMap<String, String> {
let mut map = std::collections::BTreeMap::new();
for imp in &m.imports {
let prefix = imp.alias.clone().unwrap_or_else(|| imp.module.clone());
map.insert(prefix, imp.module.clone());
}
map
}
// --- Workspace diff -------------------------------------------------------
struct WorkspaceDiffReport {
workspace_a: String,
workspace_b: String,
added_modules: Vec<ModuleDiffEntry>,
removed_modules: Vec<ModuleDiffEntry>,
unchanged_modules: Vec<ModuleDiffEntry>,
changed_modules: Vec<ChangedModuleEntry>,
}
struct ModuleDiffEntry {
name: String,
hash: String,
}
struct ChangedModuleEntry {
name: String,
hash_a: String,
hash_b: String,
added: Vec<DiffEntry>,
removed: Vec<DiffEntry>,
changed: Vec<ChangedEntry>,
unchanged: Vec<DiffEntry>,
}
impl WorkspaceDiffReport {
fn is_identical(&self) -> bool {
self.added_modules.is_empty()
&& self.removed_modules.is_empty()
&& self.changed_modules.is_empty()
}
}
fn build_workspace_diff(
a: &ailang_core::Workspace,
b: &ailang_core::Workspace,
) -> WorkspaceDiffReport {
let mut added = Vec::new();
let mut removed = Vec::new();
let mut unchanged = Vec::new();
let mut changed = Vec::new();
for (name, ma) in &a.modules {
let hash_a = ailang_core::module_hash(ma);
match b.modules.get(name) {
None => removed.push(ModuleDiffEntry {
name: name.clone(),
hash: hash_a,
}),
Some(mb) => {
let hash_b = ailang_core::module_hash(mb);
if hash_a == hash_b {
unchanged.push(ModuleDiffEntry {
name: name.clone(),
hash: hash_a,
});
} else {
let (sub_added, sub_removed, sub_changed, sub_unchanged) =
diff_def_lists(&ma.defs, &mb.defs);
changed.push(ChangedModuleEntry {
name: name.clone(),
hash_a,
hash_b,
added: sub_added,
removed: sub_removed,
changed: sub_changed,
unchanged: sub_unchanged,
});
}
}
}
}
for (name, mb) in &b.modules {
if !a.modules.contains_key(name) {
added.push(ModuleDiffEntry {
name: name.clone(),
hash: ailang_core::module_hash(mb),
});
}
}
added.sort_by(|x, y| x.name.cmp(&y.name));
removed.sort_by(|x, y| x.name.cmp(&y.name));
unchanged.sort_by(|x, y| x.name.cmp(&y.name));
changed.sort_by(|x, y| x.name.cmp(&y.name));
WorkspaceDiffReport {
workspace_a: a.entry.clone(),
workspace_b: b.entry.clone(),
added_modules: added,
removed_modules: removed,
unchanged_modules: unchanged,
changed_modules: changed,
}
}
fn workspace_diff_report_to_json(r: &WorkspaceDiffReport) -> serde_json::Value {
let mod_entry = |e: &ModuleDiffEntry| {
serde_json::json!({ "name": e.name, "hash": e.hash })
};
let entry = |e: &DiffEntry| {
serde_json::json!({
"name": e.name,
"hash": e.hash,
"kind": e.kind,
})
};
let changed_entry = |c: &ChangedEntry| {
serde_json::json!({
"name": c.name,
"hash_a": c.hash_a,
"hash_b": c.hash_b,
"kind_a": c.kind_a,
"kind_b": c.kind_b,
})
};
let changed_mod = |c: &ChangedModuleEntry| {
serde_json::json!({
"name": c.name,
"hash_a": c.hash_a,
"hash_b": c.hash_b,
"added": c.added.iter().map(entry).collect::<Vec<_>>(),
"removed": c.removed.iter().map(entry).collect::<Vec<_>>(),
"changed": c.changed.iter().map(changed_entry).collect::<Vec<_>>(),
"unchanged": c.unchanged.iter().map(entry).collect::<Vec<_>>(),
})
};
serde_json::json!({
"workspace_a": r.workspace_a,
"workspace_b": r.workspace_b,
"added_modules": r.added_modules.iter().map(mod_entry).collect::<Vec<_>>(),
"removed_modules": r.removed_modules.iter().map(mod_entry).collect::<Vec<_>>(),
"unchanged_modules": r.unchanged_modules.iter().map(mod_entry).collect::<Vec<_>>(),
"changed_modules": r.changed_modules.iter().map(changed_mod).collect::<Vec<_>>(),
})
}
fn render_workspace_diff_text(r: &WorkspaceDiffReport) -> String {
use std::fmt::Write;
let mut out = String::new();
let _ = writeln!(out, "workspace diff: {} -> {}", r.workspace_a, r.workspace_b);
if r.is_identical() && r.unchanged_modules.is_empty() {
let _ = writeln!(out, "no changes");
return out;
}
for m in &r.added_modules {
let _ = writeln!(out, "+ module {} {}", m.name, m.hash);
}
for m in &r.removed_modules {
let _ = writeln!(out, "- module {} {}", m.name, m.hash);
}
for c in &r.changed_modules {
let _ = writeln!(
out,
"~ module {} {} -> {}",
c.name, c.hash_a, c.hash_b
);
for e in &c.added {
let _ = writeln!(out, " + {} ({}) {}", e.name, e.kind, e.hash);
}
for e in &c.removed {
let _ = writeln!(out, " - {} ({}) {}", e.name, e.kind, e.hash);
}
for ce in &c.changed {
let kind = if ce.kind_a == ce.kind_b {
ce.kind_a.to_string()
} else {
format!("{} -> {}", ce.kind_a, ce.kind_b)
};
let _ = writeln!(
out,
" ~ {} ({}) {} -> {}",
ce.name, kind, ce.hash_a, ce.hash_b
);
}
for e in &c.unchanged {
let _ =
writeln!(out, " {} ({}) {} (unchanged)", e.name, e.kind, e.hash);
}
}
for m in &r.unchanged_modules {
let _ = writeln!(out, " module {} {} (unchanged)", m.name, m.hash);
}
out
}
fn parse_alloc_strategy(s: &str) -> Result<ailang_codegen::AllocStrategy> {
match s {
"gc" => Ok(ailang_codegen::AllocStrategy::Gc),
"bump" => Ok(ailang_codegen::AllocStrategy::Bump),
"rc" => Ok(ailang_codegen::AllocStrategy::Rc),
other => anyhow::bail!(
"unknown --alloc value `{other}` (expected `gc`, `bump`, or `rc`)"
),
}
}
/// Locate the workspace-root `runtime/bump.c` file relative to the
/// `ail` binary. We search upwards for a directory that contains
/// `runtime/bump.c`; that's the bench-only allocator stub. If we
/// can't find it, the build aborts with a clear message — the
/// `--alloc=bump` path is opt-in, so this only fires when the user
/// asked for it.
fn locate_bump_runtime() -> Result<PathBuf> {
// Two anchors we try in order:
// 1. the directory containing the running `ail` binary, walked
// up to find `runtime/bump.c` (handles `target/release/ail`
// and `target/debug/ail` cleanly).
// 2. the current working directory, walked up.
let candidates = [
std::env::current_exe().ok(),
std::env::current_dir().ok(),
];
for start in candidates.iter().flatten() {
let mut cur: &Path = start.as_path();
loop {
let candidate = cur.join("runtime").join("bump.c");
if candidate.exists() {
return Ok(candidate);
}
match cur.parent() {
Some(p) => cur = p,
None => break,
}
}
}
anyhow::bail!(
"could not locate `runtime/bump.c` (required for --alloc=bump). \
Run `ail` from inside the AILang workspace."
)
}
/// Locate the workspace-root `runtime/rc.c` file relative to the
/// `ail` binary, mirroring [`locate_bump_runtime`]. The `--alloc=rc`
/// path (Iter 18b) compiles this stub and links it instead of `-lgc`;
/// it supplies `ailang_rc_alloc` / `ailang_rc_inc` / `ailang_rc_dec`
/// against libc malloc/free.
fn locate_rc_runtime() -> Result<PathBuf> {
let candidates = [
std::env::current_exe().ok(),
std::env::current_dir().ok(),
];
for start in candidates.iter().flatten() {
let mut cur: &Path = start.as_path();
loop {
let candidate = cur.join("runtime").join("rc.c");
if candidate.exists() {
return Ok(candidate);
}
match cur.parent() {
Some(p) => cur = p,
None => break,
}
}
}
anyhow::bail!(
"could not locate `runtime/rc.c` (required for --alloc=rc). \
Run `ail` from inside the AILang workspace."
)
}
/// Locate the workspace-root `runtime/str.c` file relative to the
/// `ail` binary, mirroring [`locate_rc_runtime`]. Iter 23.2:
/// `runtime/str.c` houses Str-runtime primitives (`ail_str_eq`,
/// later `ail_str_compare`) and is linked unconditionally for every
/// alloc strategy — `@ail_str_eq` is declared in the emitted IR
/// header (codegen) without an alloc-strategy guard, so the symbol
/// must always be resolvable at link time.
fn locate_str_runtime() -> Result<PathBuf> {
let candidates = [
std::env::current_exe().ok(),
std::env::current_dir().ok(),
];
for start in candidates.iter().flatten() {
let mut cur: &Path = start.as_path();
loop {
let candidate = cur.join("runtime").join("str.c");
if candidate.exists() {
return Ok(candidate);
}
match cur.parent() {
Some(p) => cur = p,
None => break,
}
}
}
anyhow::bail!(
"could not locate `runtime/str.c` (linked unconditionally). \
Run `ail` from inside the AILang workspace."
)
}
/// Iter 9b: shared build helper for `Cmd::Build` and `Cmd::Run`.
/// Loads the workspace, runs the typechecker, emits IR, and links via
/// clang. On typecheck failure, prints diagnostics to stderr and exits
/// the process with code 1. On clang failure, returns a Result error
/// (the .ll path is preserved for post-mortem inspection).
///
/// Iter 16b.3: between `check_workspace` and `lower_workspace` we run
/// `ailang_check::lift_letrecs` per module. The lift eliminates any
/// `Term::LetRec` that the desugar pass left in place (specifically:
/// LetRecs that capture `Term::Let`-bound names, whose types are
/// only known after typecheck). The lifted workspace then goes to
/// codegen unchanged.
///
/// Bench iter: `alloc` selects the heap allocator the emitted IR
/// targets. Default `Gc` keeps the entire pipeline (IR text, link
/// command) byte-identical to pre-bench. `Bump` declares
/// `@bump_malloc` instead of `@GC_malloc` and links `runtime/bump.c`
/// in lieu of `-lgc`. `Rc` (Iter 18b) declares `@ailang_rc_alloc`
/// instead and links `runtime/rc.c` — RC runtime, alloc-only — Iter
/// 18b plumbing; inc/dec instrumentation arrives in 18c.
fn build_to(
path: &Path,
out: Option<PathBuf>,
opt: &str,
alloc: ailang_codegen::AllocStrategy,
) -> Result<PathBuf> {
let ws = ailang_surface::load_workspace(path)?;
let diags = ailang_check::check_workspace(&ws);
if !diags.is_empty() {
for d in &diags {
eprintln!(
"{}: [{}] {}{}",
match d.severity {
ailang_check::Severity::Error => "error",
ailang_check::Severity::Warning => "warning",
},
d.code,
d.def
.as_ref()
.map(|n| format!("{n}: "))
.unwrap_or_default(),
d.message,
);
}
// Iter 19a: only Error-severity blocks the build. Warning-
// severity diagnostics (e.g. `over-strict-mode`) print but
// do not abort.
if diags
.iter()
.any(|d| matches!(d.severity, ailang_check::Severity::Error))
{
std::process::exit(1);
}
}
// Iter 16b.3: run `lift_letrecs` per module on the post-desugar
// form. Codegen's internal desugar pass is idempotent on a
// module that contains no `Term::LetRec`, so the lifted output
// can be handed directly to `lower_workspace`.
let mut lifted_modules = std::collections::BTreeMap::new();
for (mname, m) in &ws.modules {
let desugared = ailang_core::desugar::desugar_module(m);
let lifted = ailang_check::lift_letrecs(&desugared)
.map_err(|e| anyhow::anyhow!("lift_letrecs in module `{mname}`: {e}"))?;
lifted_modules.insert(mname.clone(), lifted);
}
let ws = ailang_core::Workspace {
entry: ws.entry.clone(),
modules: lifted_modules,
root_dir: ws.root_dir.clone(),
// Iter 22b.1: pass the registry through the lift pass. Lift
// only rewrites `Term::LetRec` into top-level fns; it does
// not touch class/instance defs, so the registry built at
// load-time remains valid.
registry: ws.registry.clone(),
};
// Iter 22b.3: monomorphisation pass. After `lift_letrecs` and
// before codegen, every (class-method, concrete-type) call-site
// pair becomes a synthesised top-level fn; user call sites are
// rewritten to target those names. Class-free workspaces flow
// through bit-identically; see `ailang_check::monomorphise_workspace`.
let ws = ailang_check::monomorphise_workspace(&ws)
.map_err(|e| anyhow::anyhow!("monomorphise_workspace: {e}"))?;
let ir = ailang_codegen::lower_workspace_with_alloc(&ws, alloc)?;
let tmpdir = std::env::temp_dir().join(format!("ailang-{}", std::process::id()));
std::fs::create_dir_all(&tmpdir)?;
let ll_path = tmpdir.join(format!("{}.ll", ws.entry));
std::fs::write(&ll_path, &ir)?;
let out_bin = out.unwrap_or_else(|| Path::new(".").join(&ws.entry).with_extension(""));
let mut clang = std::process::Command::new("clang");
clang.arg(opt).arg("-o").arg(&out_bin).arg(&ll_path);
// Iter 23.2: compile and link `runtime/str.c` unconditionally —
// `@ail_str_eq` is emitted in the IR header without an alloc-strategy
// guard (it backs the prelude `eq__Str` mono symbol). The .o is
// cached at <tmpdir>/str.o per build invocation; if a program never
// monomorphises `eq__Str`, clang -O2 dead-strips the symbol so the
// linker overhead is fixed and negligible.
let str_src = locate_str_runtime()?;
let str_obj = tmpdir.join("str.o");
let cstatus = std::process::Command::new("clang")
.arg("-O2")
.arg("-c")
.arg(&str_src)
.arg("-o")
.arg(&str_obj)
.status()
.context("compiling runtime/str.c")?;
if !cstatus.success() {
anyhow::bail!(
"clang failed compiling str.c (status {})",
cstatus
);
}
clang.arg(&str_obj);
// Iter hs.4: compile and link `runtime/rc.c` unconditionally,
// hoisted out of the AllocStrategy::Rc arm. `runtime/str.c`'s
// `ailang_int_to_str` / `ailang_float_to_str` call
// `ailang_rc_alloc` defined in rc.c; the weak extern declaration
// in str.c (iter hs.3) resolves to the strong definition here.
// Under --alloc=gc / --alloc=bump the alloc strategy still
// governs ADT allocation (GC_malloc / bump_malloc); rc.c
// provides the heap-Str primitives in parallel. clang -O2
// dead-strips the rc.c symbols when no caller exists in the
// final binary, so the link-time overhead under gc / bump is
// negligible.
let rc_src = locate_rc_runtime()?;
let rc_obj = tmpdir.join("rc.o");
let cstatus = std::process::Command::new("clang")
.arg("-O2")
.arg("-c")
.arg(&rc_src)
.arg("-o")
.arg(&rc_obj)
.status()
.context("compiling runtime/rc.c")?;
if !cstatus.success() {
anyhow::bail!(
"clang failed compiling rc.c (status {})",
cstatus
);
}
clang.arg(&rc_obj);
match alloc {
ailang_codegen::AllocStrategy::Gc => {
// Boehm conservative GC (Decision 9 / Iter 14f). The lowered
// IR calls @GC_malloc; libgc supplies it. Pthread/dl are
// pulled in transitively via libgc.so on Linux, so a single
// -lgc suffices.
clang.arg("-lgc");
}
ailang_codegen::AllocStrategy::Bump => {
// Bench iter: link the no-free arena stub from
// `runtime/bump.c` instead of libgc. We compile the stub
// inline at -O2 (its body is small, the .o is cached at
// <tmpdir>/bump.o per build invocation; no global cache
// because the bench harness rebuilds binaries top-to-bottom
// anyway).
let bump_src = locate_bump_runtime()?;
let bump_obj = tmpdir.join("bump.o");
let cstatus = std::process::Command::new("clang")
.arg("-O2")
.arg("-c")
.arg(&bump_src)
.arg("-o")
.arg(&bump_obj)
.status()
.context("compiling runtime/bump.c")?;
if !cstatus.success() {
anyhow::bail!(
"clang failed compiling bump.c (status {})",
cstatus
);
}
clang.arg(&bump_obj);
}
ailang_codegen::AllocStrategy::Rc => {
// Iter hs.4: rc.c compile-and-link hoisted to the
// unconditional path above. `--alloc=rc` is still a
// valid CLI flag — it drives codegen's
// `@ailang_rc_alloc`-vs-`@GC_malloc` selection in the IR
// header — so the match arm is retained, but its body
// is empty (no rc-specific linking work remains).
}
}
let status = clang.status().context("running clang")?;
if !status.success() {
anyhow::bail!(
"clang failed (status {}); ll at {}",
status,
ll_path.display()
);
}
Ok(out_bin)
}
/// ct.1 migration helper: rewrite bare cross-module Type::Con names
/// and Term::Ctor.type_name to their qualified form. Sets
/// `*changed` to `true` if any rewrite happened. Uses the
/// first-match-in-imports-order disambiguation rule with prelude as
/// implicit last-resort fallback, matching iter 23.1.3's typecheck
/// imports-fallback so the rewrite never silently re-aims a fixture.
fn rewrite_def(
def: &mut ailang_core::ast::Def,
owning_module: &str,
local_types: &std::collections::BTreeMap<String, std::collections::BTreeSet<String>>,
import_names: &[String],
changed: &mut bool,
) {
use ailang_core::ast::{Def, Term, Type};
fn rewrite_name(
name: &mut String,
owning_module: &str,
local_types: &std::collections::BTreeMap<String, std::collections::BTreeSet<String>>,
import_names: &[String],
changed: &mut bool,
) {
if name.contains('.') {
return;
}
if matches!(
name.as_str(),
"Int" | "Bool" | "Str" | "Unit" | "Float"
) {
return;
}
if local_types
.get(owning_module)
.map(|s| s.contains(name))
.unwrap_or(false)
{
return;
}
// Bare cross-module — find owner via imports-in-order, with
// prelude as last-resort fallback.
let owner: Option<&str> = import_names
.iter()
.map(|s| s.as_str())
.find(|imp| {
local_types
.get(*imp)
.map(|s| s.contains(name))
.unwrap_or(false)
})
.or_else(|| {
if local_types
.get("prelude")
.map(|s| s.contains(name))
.unwrap_or(false)
{
Some("prelude")
} else {
None
}
});
if let Some(owner) = owner {
*name = format!("{owner}.{name}");
*changed = true;
}
// If no owner found, leave bare — validator will reject later.
}
fn rewrite_type(
t: &mut Type,
owning_module: &str,
local_types: &std::collections::BTreeMap<String, std::collections::BTreeSet<String>>,
import_names: &[String],
changed: &mut bool,
) {
match t {
Type::Con { name, args } => {
rewrite_name(
name,
owning_module,
local_types,
import_names,
changed,
);
for a in args {
rewrite_type(
a,
owning_module,
local_types,
import_names,
changed,
);
}
}
Type::Fn { params, ret, .. } => {
for p in params {
rewrite_type(
p,
owning_module,
local_types,
import_names,
changed,
);
}
rewrite_type(
ret,
owning_module,
local_types,
import_names,
changed,
);
}
Type::Forall { body, constraints, .. } => {
for c in constraints {
rewrite_type(
&mut c.type_,
owning_module,
local_types,
import_names,
changed,
);
}
rewrite_type(
body,
owning_module,
local_types,
import_names,
changed,
);
}
Type::Var { .. } => {}
}
}
fn rewrite_term(
t: &mut Term,
owning_module: &str,
local_types: &std::collections::BTreeMap<String, std::collections::BTreeSet<String>>,
import_names: &[String],
changed: &mut bool,
) {
match t {
Term::Lit { .. } | Term::Var { .. } => {}
Term::App { callee, args, .. } => {
rewrite_term(
callee,
owning_module,
local_types,
import_names,
changed,
);
for a in args {
rewrite_term(
a,
owning_module,
local_types,
import_names,
changed,
);
}
}
Term::Let { value, body, .. } => {
rewrite_term(
value,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
body,
owning_module,
local_types,
import_names,
changed,
);
}
Term::LetRec { ty, body, in_term, .. } => {
rewrite_type(
ty,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
body,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
in_term,
owning_module,
local_types,
import_names,
changed,
);
}
Term::If { cond, then, else_ } => {
rewrite_term(
cond,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
then,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
else_,
owning_module,
local_types,
import_names,
changed,
);
}
Term::Do { args, .. } => {
for a in args {
rewrite_term(
a,
owning_module,
local_types,
import_names,
changed,
);
}
}
Term::Ctor { type_name, args, .. } => {
rewrite_name(
type_name,
owning_module,
local_types,
import_names,
changed,
);
for a in args {
rewrite_term(
a,
owning_module,
local_types,
import_names,
changed,
);
}
}
Term::Match { scrutinee, arms } => {
rewrite_term(
scrutinee,
owning_module,
local_types,
import_names,
changed,
);
for arm in arms {
rewrite_term(
&mut arm.body,
owning_module,
local_types,
import_names,
changed,
);
}
}
Term::Lam { param_tys, ret_ty, body, .. } => {
for pt in param_tys {
rewrite_type(
pt,
owning_module,
local_types,
import_names,
changed,
);
}
rewrite_type(
ret_ty,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
body,
owning_module,
local_types,
import_names,
changed,
);
}
Term::Seq { lhs, rhs } => {
rewrite_term(
lhs,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
rhs,
owning_module,
local_types,
import_names,
changed,
);
}
Term::Clone { value } => rewrite_term(
value,
owning_module,
local_types,
import_names,
changed,
),
Term::ReuseAs { source, body } => {
rewrite_term(
source,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
body,
owning_module,
local_types,
import_names,
changed,
);
}
}
}
match def {
Def::Fn(fd) => {
rewrite_type(
&mut fd.ty,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
&mut fd.body,
owning_module,
local_types,
import_names,
changed,
);
}
Def::Const(cd) => {
rewrite_type(
&mut cd.ty,
owning_module,
local_types,
import_names,
changed,
);
rewrite_term(
&mut cd.value,
owning_module,
local_types,
import_names,
changed,
);
}
Def::Type(td) => {
for c in &mut td.ctors {
for fty in &mut c.fields {
rewrite_type(
fty,
owning_module,
local_types,
import_names,
changed,
);
}
}
}
Def::Class(cd) => {
for cm in &mut cd.methods {
rewrite_type(
&mut cm.ty,
owning_module,
local_types,
import_names,
changed,
);
if let Some(body) = &mut cm.default {
rewrite_term(
body,
owning_module,
local_types,
import_names,
changed,
);
}
}
}
Def::Instance(id) => {
rewrite_type(
&mut id.type_,
owning_module,
local_types,
import_names,
changed,
);
for im in &mut id.methods {
rewrite_term(
&mut im.body,
owning_module,
local_types,
import_names,
changed,
);
}
}
}
}
#[cfg(test)]
mod tests {
use super::compose_merge_prose_prompt;
#[test]
fn locate_str_runtime_finds_workspace_str_c() {
let p = super::locate_str_runtime().expect("locate runtime/str.c");
assert!(
p.ends_with("runtime/str.c"),
"expected path ending in runtime/str.c, got {}",
p.display()
);
assert!(p.exists(), "located path must exist on disk: {}", p.display());
}
/// The composed prompt must contain all three payloads
/// byte-for-byte — the LLM has to see exactly what the user wrote,
/// the original module's Form-A bytes, and the embedded spec, with
/// no re-encoding or stripping.
#[test]
fn merge_prose_prompt_contains_all_payloads_verbatim() {
let orig = "(module foo\n (fn main\n (type (fn-type (params) (ret (con Unit))))\n (params)\n (body (lit-unit))))\n";
let prose = "// module foo\n\nfn main() -> Unit { () }\n";
let out = compose_merge_prose_prompt(orig, prose);
assert!(
out.contains(orig),
"prompt missing original Form-A verbatim; got:\n{out}"
);
assert!(
out.contains(prose),
"prompt missing edited prose verbatim; got:\n{out}"
);
// The full FORM_A_SPEC must appear in the prompt.
assert!(
out.contains(ailang_core::FORM_A_SPEC),
"prompt missing the FORM_A_SPEC body verbatim"
);
}
/// The framing sections must all be present so the LLM has the
/// full task definition. Asserted by substring on a representative
/// landmark from each section.
#[test]
fn merge_prose_prompt_has_all_framing_sections() {
let out = compose_merge_prose_prompt("(module x)", "");
assert!(
out.contains("ROLE") && out.contains("Form-A"),
"prompt missing ROLE section"
);
assert!(
out.contains("CONTRACT")
&& out.contains("preserve those")
&& out.contains("(own T)")
&& out.contains("(effects IO)"),
"prompt missing CONTRACT section"
);
assert!(
out.contains("OUTPUT")
&& out.contains("ONLY")
&& out.contains("no markdown"),
"prompt missing OUTPUT section"
);
// The embedded language spec, by section header.
assert!(
out.contains("FORM-A SPECIFICATION"),
"prompt missing FORM-A SPECIFICATION header"
);
// Heredoc-style markers around all three payloads.
assert!(
out.contains("<<<FORM_A_SPEC")
&& out.contains("FORM_A_SPEC\n")
&& out.contains("<<<ORIGINAL_FORM_A")
&& out.contains("ORIGINAL_FORM_A\n")
&& out.contains("<<<EDITED_PROSE")
&& out.contains("EDITED_PROSE\n"),
"prompt missing payload markers"
);
}
/// Pure / deterministic: same inputs must yield byte-identical
/// output.
#[test]
fn merge_prose_prompt_is_deterministic() {
let orig = "(module y)";
let prose = "fn f() {}";
let a = compose_merge_prose_prompt(orig, prose);
let b = compose_merge_prose_prompt(orig, prose);
assert_eq!(a, b);
}
}