Files
pikuma_ps1/scripts/passes/annotation.lua
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2026-07-11 19:53:12 -04:00

453 lines
19 KiB
Lua

--- passes/annotation.lua — Atom-annotation DSL validator.
---
--- Validates `MipsAtom_(name) atom_info(atom_bind(Binds_X), atom_reads(...), atom_writes(...)) { ... }` declarations in source files.
--- Also reads: `Binds_*` struct declarations (`typedef Struct_(Binds_X) { ... };`)
---
--- Source scanning: done ONCE upstream by `duffle.scan_source()` (ps1_meta.lua pre-scans each source and stashes the result in `src.scan`).
---
--- Writes:
--- - `<ctx.out_root>/<dir_basename>.errors.h` — one per module, with `#error` directives on findings (the C compile will surface the error)
--- - The annotations.txt report is rendered by `passes/report.lua` from the per-module results stashed in `ctx.flags._annot_results`
---
--- **Conventions**: tabs (1/level), EmmyLua annotations, no regex, Lua 5.3 compatible
-- Bootstrap: same as entry scripts. See `ps1_meta.lua` for the rationale.
-- Bootstrap: load `scripts/duffle_paths.lua` (sets package.path + package.cpath).
-- Uses `debug.getinfo` to find this file's own directory, so it works
-- both standalone and when require'd from the orchestrator.
-- Bootstrap: load `duffle_paths.lua` via `debug.getinfo(1, "S").source` (works both standalone + when require'd).
-- duffle_paths.lua sets package.path then returns `require("duffle")` at the bottom, so the dofile value IS the duffle module.
local _bootstrap_dir = debug.getinfo(1, "S").source:match("^@?(.*[/\\])") or "./"
local duffle = dofile(_bootstrap_dir .. "../duffle_paths.lua")
local write_file = duffle.write_file
local ensure_dir = duffle.ensure_dir
-- Domain tables (single source of truth in duffle.lua).
local WAVE_CONTEXT_REGS = duffle.WAVE_CONTEXT_REGS
local function is_wave_context_reg(n) return WAVE_CONTEXT_REGS[n] ~= nil end
-- ════════════════════════════════════════════════════════════════════════════
-- Type declarations
-- ════════════════════════════════════════════════════════════════════════════
--- @class SourceFile
--- @field path string -- absolute path to the source file
--- @field text string -- the full source text
--- @field dir string -- the directory containing the source
--- @field basename string -- filename without extension
--- @field scan table -- pre-scanned SourceScan payload (from duffle.scan_source)
--- @class PassCtx
--- @field sources SourceFile[]
--- @field metadata_path string
--- @field shared table
--- @field shared.word_counts table<string, integer>
--- @field out_root string
--- @field project_root string
--- @field upstream table<string, table>
--- @field flags table
--- @field flags._annot_results table[] -- stashed by annotation pass; consumed by report.lua
--- @field dry_run boolean
--- @field verbose boolean
--- @class PassResult
--- @field outputs table[]
--- @field errors table[]
--- @field warnings table[]
--- @class AtomAnnotation
--- @field line integer -- source line of the atom_info call
--- @field macro string -- the macro name (always "atom_info" in the new shape)
--- @field name string -- the atom name
--- @field kind string -- always "info"
--- @field binds string|nil -- Binds_X name if any
--- @field reads string[] -- R_* names (read targets)
--- @field writes string[] -- R_* names (write targets)
--- @field errors string[]|nil -- parse-time errors from scan_source (atom_info body malformed)
--- @class Finding
--- @field line integer -- source line (or 0 for pass-level)
--- @field msg string -- finding message
--- @class Findings
--- @field errors Finding[]
--- @field warnings Finding[]
--- @field info Finding[]
--- @class PipeCtx
--- @field atom_index table<string, AtomAnnotation> -- name -> AtomAnnotation (only kind=="atom")
--- @field binds_index table<string, BindsStruct> -- name -> BindsStruct
--- @field annot_counts table<string, integer> -- name -> annotation count (for unique_annotation check)
--- @class AnnotatedResult
--- @field atoms AtomEntry[]
--- @field annots AtomAnnotation[]
--- @field macros MacroEntry[]
--- @field binds BindsEntry[]
--- @field errors Finding[]
--- @field warnings Finding[]
--- @field info Finding[]
-- ════════════════════════════════════════════════════════════════════════════
-- Per-check functions (the CHECK_RULES table's payload)
-- ════════════════════════════════════════════════════════════════════════════
--
-- Each check has a uniform `append_to_findings` shape (errors[] / warnings[] / info[]).
-- The dispatcher in `validate()` decides which findings list each check writes to — by convention,
-- "existence" checks (declaration must exist, struct must exist) write errors[]; "shape" checks
-- (writes/reads must be wave-context) write warnings[]. The `macro_word_drift` check writes
-- both errors[] (missing/mismatch) and info[] (match).
--- Check: every annotated atom must have a matching MipsAtom_(name) declaration.
--- @param a AtomAnnotation
--- @param pipe_ctx PipeCtx
--- @param findings Findings
local function check_atom_decl_exists(a, pipe_ctx, findings)
if not pipe_ctx.atom_index[a.name] then
findings.errors[#findings.errors + 1] = {
line = a.line,
msg = string.format("annotation for '%s' has no matching MipsAtom_(%s) { ... }", a.name, a.name),
}
end
end
--- Check: every atom may have AT MOST ONE annotation.
--- Post-loop: needs full-corpus `annot_counts` from pipe_ctx.
--- @param pipe_ctx PipeCtx
--- @param findings Findings
local function check_unique_annotation(pipe_ctx, findings)
for name, n in pairs(pipe_ctx.annot_counts) do
if n > 1 then
findings.errors[#findings.errors + 1] = {
line = pipe_ctx.atom_index[name] and pipe_ctx.atom_index[name].line or 0,
msg = string.format("MipsAtom_(%s) has %d annotations (expected at most 1)", name, n),
}
end
end
end
--- Check: BIND atoms must reference a real Binds_* struct.
--- Demoted from error to warning (2026-07-10): the same condition is now caught by passes/static_analysis.lua's
--- check_abi_handoff() as an error. Emitting a warning here keeps the annotation pass from being stop-on-error
--- for the common test-fixture case, while still surfacing the issue in the report.
--- The static-analysis report remains the source of truth for build-stopping errors.
--- @param a AtomAnnotation
--- @param pipe_ctx PipeCtx
--- @param findings Findings
local function check_binds_struct_exists(a, pipe_ctx, findings)
if not a.binds then return end
if pipe_ctx.binds_index[a.binds] then return end
findings.warnings[#findings.warnings + 1] = {
line = a.line,
msg = string.format("'%s' binds '%s' but no Struct_(%s) { ... } "
.. "declaration found (also flagged as an error by check_abi_handoff in the static-analysis pass)"
, a.name, a.binds, a.binds),
}
end
--- Check: Binds_* struct fields must correspond to known wave-context registers.
--- Also checks that all `atom_writes(...)` entries are wave-context registers.
--- @param a AtomAnnotation
--- @param pipe_ctx PipeCtx
--- @param findings Findings
local function check_binds_field_wave_context(a, pipe_ctx, findings)
if not (a.binds and pipe_ctx.binds_index[a.binds]) then return end
local bs = pipe_ctx.binds_index[a.binds]
for _, f in ipairs(bs.fields) do
local candidate = "R_" .. f.name
if not is_wave_context_reg(candidate) then
findings.warnings[#findings.warnings + 1] = {
line = bs.line,
msg = string.format("%s field '%s' doesn't match a known wave-context register (candidate '%s')", a.binds, f.name, candidate),
}
end
end
for _, w in ipairs(a.writes) do
if not is_wave_context_reg(w) then
findings.warnings[#findings.warnings + 1] = {
line = a.line,
msg = string.format("%s writes '%s' which is not a known wave-context register", a.name, w),
}
end
end
end
--- Check: atom_reads(...) entries should be wave-context registers (or R_TapePtr for rbind).
--- @param a AtomAnnotation
--- @param pipe_ctx PipeCtx
--- @param findings Findings
local function check_reads_wave_context(a, pipe_ctx, findings)
for _, r in ipairs(a.reads) do
if not is_wave_context_reg(r) and r ~= "R_TapePtr" then
findings.warnings[#findings.warnings + 1] = {
line = a.line,
msg = string.format("atom '%s' reads '%s' which is not a known wave-context register", a.name, r),
}
end
end
end
--- Check: TAPE_WORDS(mac_X, N) ↔ WORD_COUNT(mac_X, N) drift.
--- Three outcomes: missing (error), mismatch (error), match (info).
--- @param m MacroEntry
--- @param wc table<string, integer> -- the shared word-count table (from ctx.shared.word_counts)
--- @param findings Findings
local function check_macro_word_drift(m, wc, findings)
local declared = wc[m.name]
if not declared then
findings.errors[#findings.errors + 1] = {
line = m.line,
msg = string.format("TAPE_WORDS(%s, %d) but '%s' is not in metadata.h", m.name, m.words, m.name),
}
return
end
if declared ~= m.words then
findings.errors[#findings.errors + 1] = {
line = m.line,
msg = string.format("DRIFT: TAPE_WORDS(%s, %d) but metadata.h declares WORD_COUNT(%s, %d)", m.name, m.words, m.name, declared),
}
return
end
findings.info[#findings.info + 1] = {
line = m.line,
msg = string.format("OK: %s = %d words", m.name, m.words),
}
end
-- ════════════════════════════════════════════════════════════════════════════
-- CHECK_RULES — data-driven check dispatch (the plex pattern)
-- ════════════════════════════════════════════════════════════════════════════
--
-- Each rule entry picks one of three "shapes" of dispatch:
-- per_annot(annot, pipe_ctx, findings) — runs once per AtomAnnotation
-- post(pipe_ctx, findings) — runs once after all per_annot calls complete (full-corpus aggregation)
-- per_macro(macro, wc, findings) — runs once per TAPE_WORDS / _Pragma macro declaration
--
-- Adding a new check = 1 row here + 1 function above. The `validate()` dispatch loop never needs editing.
local CHECK_RULES = {
{ name = "atom_decl_exists", per_annot = check_atom_decl_exists },
{ name = "binds_struct_exists", per_annot = check_binds_struct_exists },
{ name = "binds_field_wave_context", per_annot = check_binds_field_wave_context },
{ name = "reads_wave_context", per_annot = check_reads_wave_context },
{ name = "unique_annotation", post = check_unique_annotation },
{ name = "macro_word_drift", per_macro = check_macro_word_drift },
}
-- ════════════════════════════════════════════════════════════════════════════
-- Validation
-- ════════════════════════════════════════════════════════════════════════════
--
-- Pure check: read from src.scan, run validations, emit findings.
-- No source walking; no parsing. The scan was done once upstream.
--- Validate one source against its pre-scanned SourceScan payload.
--- @param ctx PassCtx
--- @param src SourceFile
--- @return AnnotatedResult
local function validate(ctx, src)
local scan = src.scan
-- Project the pre-scanned atoms to the AtomEntry shape this pass needs.
local atoms = {}
for _, a in ipairs(scan.atoms) do
if a.kind == "atom" then
atoms[#atoms + 1] = { line = a.line, name = a.raw_name }
end
end
-- Project the pre-scanned atom_infos to AtomAnnotation shape.
local annots = {}
for _, info in ipairs(scan.atom_infos) do
annots[#annots + 1] = {
line = info.info_line,
macro = "atom_info",
name = info.atom_name,
kind = "info",
binds = info.binds,
reads = info.reads or {},
writes = info.writes or {},
errors = info.errors,
}
end
-- Build pipe_ctx (Fleury: expose structure). Pre-compute everything the per-check functions need.
-- Single source of truth for atom / binds / annotation-count lookups.
local pipe_ctx = {
atom_index = {},
binds_index = {},
annot_counts = {},
}
for _, a in ipairs(atoms) do pipe_ctx.atom_index [a.name] = a end
for _, b in ipairs(scan.binds) do pipe_ctx.binds_index[b.name] = b end
for _, a in ipairs(annots) do
if a.name then
pipe_ctx.annot_counts[a.name] = (pipe_ctx.annot_counts[a.name] or 0) + 1
end
end
-- Findings live in a single struct with three lists (errors / warnings / info).
-- Each check writes to the list appropriate for its severity.
local findings = { errors = {}, warnings = {}, info = {} }
-- Propagate parse-time errors from scan_source's atom_info parsing.
-- These are errors found in the atom_info(...) body itself (e.g., malformed args).
-- They are pre-existing in the scan payload — we just lift them into our findings list.
for _, a in ipairs(annots) do
if a.errors then
for _, msg in ipairs(a.errors) do
findings.errors[#findings.errors + 1] = {
line = a.line,
msg = string.format("'%s': %s", a.name, msg),
}
end
end
end
-- THE per-annotation pipeline. ONE loop. CHECK_RULES dispatches per_annot rules.
for _, a in ipairs(annots) do
for _, rule in ipairs(CHECK_RULES) do
if rule.per_annot then rule.per_annot(a, pipe_ctx, findings) end
end
end
-- Post-loop rules (one-shot checks that need full-corpus aggregation in pipe_ctx).
for _, rule in ipairs(CHECK_RULES) do
if rule.post then rule.post(pipe_ctx, findings) end
end
-- Per-macro rules (TAPE_WORDS vs WORD_COUNT drift).
local wc = ctx.shared.word_counts
for _, m in ipairs(scan.macros) do
for _, rule in ipairs(CHECK_RULES) do
if rule.per_macro then rule.per_macro(m, wc, findings) end
end
end
-- Information summary (always emitted).
findings.info[#findings.info + 1] = {
line = 0,
msg = string.format("scanned: %d atom(s), %d annotation(s), %d macro-word-decl(s), %d binds struct(s)",
#atoms, #annots, #scan.macros, #scan.binds),
}
return {
atoms = atoms,
annots = annots,
macros = scan.macros,
binds = scan.binds,
errors = findings.errors,
warnings = findings.warnings,
info = findings.info,
}
end
-- ════════════════════════════════════════════════════════════════════════════
-- Per-DIRECTORY (per-module) output: errors.h + annotations.txt
-- ════════════════════════════════════════════════════════════════════════════
--- Render `<dir_basename>.errors.h` with `#error` directives for every error found across all sources in the directory.
--- Empty directories (no errors, no atoms) produce no file.
local function emit_module_errors_h(ctx, dir_basename, atoms_count, errors, sources)
if ctx.dry_run then return nil end
if atoms_count == 0 and #errors == 0 then
return nil
end
local out_path = ctx.out_root .. "/" .. dir_basename .. ".errors.h"
local lines = {
"// Auto-generated by ps1_meta.lua (passes/annotation.lua) — DO NOT EDIT",
string.format("// Module: %s Sources: %d", dir_basename, #sources),
"#pragma once",
"",
}
if #errors == 0 then
lines[#lines + 1] = "// annotation pass OK"
else
for _, e in ipairs(errors) do
local src_tag = ""
if e.source then
local src_name = e.source:match("([^/\\]+)$") or e.source
src_tag = src_name .. ": "
end
lines[#lines + 1] = string.format('#error "%s%s (line %d)"', src_tag, e.msg, e.line)
end
end
ensure_dir(ctx.out_root)
write_file(out_path, table.concat(lines, "\n") .. "\n")
return out_path
end
--- Stash aggregated per-module results for the report pass to consume.
local function emit_module_annotations_stub(ctx, dir, dir_basename, atoms_count)
ctx.flags = ctx.flags or {}
ctx.flags._annot_results = ctx.flags._annot_results or {}
ctx.flags._annot_results[#ctx.flags._annot_results + 1] = {
dir = dir,
dir_basename = dir_basename,
atoms_count = atoms_count,
}
end
-- ════════════════════════════════════════════════════════════════════════════
-- M.run — orchestrator entry
-- ════════════════════════════════════════════════════════════════════════════
--- @class M
local M = {}
-- Expose `validate` for downstream passes (e.g. report.lua) that need to re-render the per-source results into a per-MODULE report.
M.validate = validate
--- @param ctx PassCtx
--- @return PassResult
function M.run(ctx)
local outputs = {}
local errors = {}
local warnings = {}
-- Per-DIRECTORY (per-module) aggregation. Group sources by `src.dir`,
-- validate every source in the dir, then emit ONE errors.h per dir.
-- `ctx.by_dir` is pre-computed in build_ctx (shared across all passes).
local by_dir = ctx.by_dir or duffle.group_sources_by_dir(ctx.sources)
for dir, dir_sources in pairs(by_dir) do
local dir_basename = dir:match("([^/\\]+)$") or dir
local dir_atoms = 0
local dir_errors = {}
local dir_warnings = {}
-- Per-source validate() results, cached for the report pass (it reads from this instead of re-validating each source).
ctx.flags = ctx.flags or {}
ctx.flags._annot_source_results = ctx.flags._annot_source_results or {}
for _, src in ipairs(dir_sources) do
local result = validate(ctx, src)
result.source = src.path -- tag for downstream rendering
ctx.flags._annot_source_results[src.path] = result -- stash so report.lua reads from cache instead of re-running validate()
dir_atoms = dir_atoms + #result.atoms
for _, e in ipairs(result.errors) do
dir_errors[#dir_errors + 1] = { line = e.line, msg = e.msg, source = src.path }
errors [#errors + 1] = { line = e.line, msg = e.msg }
end
for _, w in ipairs(result.warnings) do
dir_warnings[#dir_warnings + 1] = { line = w.line, msg = w.msg }
warnings [#warnings + 1] = { line = w.line, msg = w.msg }
end
end
local err_path = emit_module_errors_h(ctx, dir_basename, dir_atoms, dir_errors, dir_sources)
if err_path then
table.insert(outputs, { errors_h = err_path })
end
emit_module_annotations_stub(ctx, dir, dir_basename, dir_atoms)
end
return { outputs = outputs, errors = errors, warnings = warnings }
end
return M