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feat: add idrisiser Idris2 proof wrappers for A2ML parser
Adds idrisiser.toml manifest and type-sig interface definitions for the A2ML parser, type system, and renderer round-trip. Generates Idris2 dependent-type modules (A2ml.Verified.*), a Zig FFI bridge, and build artefacts proving parse totality, TrustLevel ordering, and round-trip correctness. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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‎generated/idrisiser/a2ml_rs_verified.ipkg‎

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-- Auto-generated by idrisiser for project: a2ml-rs
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package a2ml_rs_verified
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sourcedir = "idris2"
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modules = A2ml.Verified.document_parser, A2ml.Verified.document_types, A2ml.Verified.round_trip
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opts = "--total"

‎generated/idrisiser/build.sh‎

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#!/usr/bin/env bash
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# SPDX-License-Identifier: PMPL-1.0-or-later
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# Auto-generated by idrisiser — build script for: a2ml-rs
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set -euo pipefail
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echo "=== idrisiser Build: a2ml-rs ==="
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echo "[1/3] Compiling Idris2 proofs..."
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idris2 --build a2ml_rs_verified.ipkg --codegen chez
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echo "[2/3] Compiling Zig FFI bridge..."
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zig build-obj -O ReleaseFast zig/a2ml_rs_ffi.zig -femit-bin=a2ml_rs_ffi.o
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echo "[3/3] Linking..."
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# Link the Idris2 runtime + Zig FFI into a shared library
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# zig build-lib -O ReleaseFast a2ml_rs_ffi.o -o liba2ml_rs_verified
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echo "=== Build complete ==="
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echo "Idris2 proofs compiled and verified."

‎generated/idrisiser/idris2/A2ml/Verified/document_parser.idr‎

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-- SPDX-License-Identifier: PMPL-1.0-or-later
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-- Auto-generated by idrisiser — do not edit manually.
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-- Interface: document-parser (type-sig)
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-- Source: idrisiser/parser.tsig
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-- Regenerate with: idrisiser generate
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||| Formally verified wrapper for interface: document-parser
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|||
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||| This module provides dependent-type proofs that:
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||| - All functions are total (cover all inputs, terminate)
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||| - Preconditions are checked before every call
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||| - Postconditions hold after every call
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||| - Invariants are preserved across all operations
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module A2ml.Verified.document_parser
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import Data.So
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import Data.Vect
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import Data.Nat
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%default total
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-- ================================================================
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-- Contract Types
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-- ================================================================
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||| Result of calling `parse`
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public export
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data parseResult : Type where
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parseOk : Result Document A2mlError -> parseResult
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parseErr : String -> parseResult
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||| Parameters for `parse`
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public export
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record parseParams where
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constructor MkparseParams
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arg0 : String
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||| Preconditions for `parse`
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public export
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parsePre : parseParams -> Bool
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parsePre params =
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-- Input string is valid UTF-8
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-- Fenced code blocks are terminated before end-of-input
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-- Every @directive line has a non-empty name after the @ sigil
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-- Every !attest block supplies identity, role, and trust fields
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True -- precondition witnesses generated here
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||| Postconditions for `parse`
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public export
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parsePost : Result Document A2mlError -> Bool
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parsePost result =
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-- Ok(doc) implies doc.blocks is a well-formed sequence with no internal inconsistency
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-- Ok(doc) with any !attest block implies doc.attestations is non-empty
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-- Err(_) is returned for every malformed input (no silent data loss)
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-- parse returns Ok for the empty string without panicking
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True -- postcondition witnesses generated here
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||| Result of calling `parse_file`
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public export
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data parse_fileResult : Type where
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parse_fileOk : Result Document A2mlError -> parse_fileResult
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parse_fileErr : String -> parse_fileResult
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||| Parameters for `parse_file`
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public export
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record parse_fileParams where
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constructor Mkparse_fileParams
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arg0 : Path
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||| Preconditions for `parse_file`
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public export
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parse_filePre : parse_fileParams -> Bool
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parse_filePre params =
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-- Input string is valid UTF-8
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-- Fenced code blocks are terminated before end-of-input
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-- Every @directive line has a non-empty name after the @ sigil
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-- Every !attest block supplies identity, role, and trust fields
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True -- precondition witnesses generated here
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||| Postconditions for `parse_file`
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public export
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parse_filePost : Result Document A2mlError -> Bool
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parse_filePost result =
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-- Ok(doc) implies doc.blocks is a well-formed sequence with no internal inconsistency
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-- Ok(doc) with any !attest block implies doc.attestations is non-empty
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-- Err(_) is returned for every malformed input (no silent data loss)
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-- parse returns Ok for the empty string without panicking
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True -- postcondition witnesses generated here
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||| Result of calling `parse_inlines`
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public export
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data parse_inlinesResult : Type where
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parse_inlinesOk : List Inline -> parse_inlinesResult
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parse_inlinesErr : String -> parse_inlinesResult
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||| Parameters for `parse_inlines`
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public export
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record parse_inlinesParams where
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constructor Mkparse_inlinesParams
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arg0 : String
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||| Preconditions for `parse_inlines`
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public export
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parse_inlinesPre : parse_inlinesParams -> Bool
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parse_inlinesPre params =
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-- Input string is valid UTF-8
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-- Fenced code blocks are terminated before end-of-input
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-- Every @directive line has a non-empty name after the @ sigil
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-- Every !attest block supplies identity, role, and trust fields
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True -- precondition witnesses generated here
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||| Postconditions for `parse_inlines`
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public export
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parse_inlinesPost : List Inline -> Bool
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parse_inlinesPost result =
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-- Ok(doc) implies doc.blocks is a well-formed sequence with no internal inconsistency
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-- Ok(doc) with any !attest block implies doc.attestations is non-empty
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-- Err(_) is returned for every malformed input (no silent data loss)
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-- parse returns Ok for the empty string without panicking
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True -- postcondition witnesses generated here
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-- ================================================================
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-- Proof Obligations
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-- ================================================================
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||| Proof that `parse` is total (covers all inputs)
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public export
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data parseTotal : Type where
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IsparseTotal : parseTotal
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||| Proof that preconditions hold for given parameters
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public export
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data parsePreSatisfied : (params : parseParams) -> Type where
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parsePreOk : So (parsePre params) -> parsePreSatisfied params
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||| Proof that postconditions hold for a given result
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public export
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data parsePostSatisfied : (result : Result Document A2mlError) -> Type where
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parsePostOk : So (parsePost result) -> parsePostSatisfied result
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||| Proof that serialise/deserialise round-trips for `parse` results
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public export
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data parseRoundTrip : Type where
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parseRoundTripOk : parseRoundTrip
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||| Proof that `parse_file` is total (covers all inputs)
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public export
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data parse_fileTotal : Type where
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Isparse_fileTotal : parse_fileTotal
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||| Proof that preconditions hold for given parameters
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public export
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data parse_filePreSatisfied : (params : parse_fileParams) -> Type where
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parse_filePreOk : So (parse_filePre params) -> parse_filePreSatisfied params
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||| Proof that postconditions hold for a given result
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public export
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data parse_filePostSatisfied : (result : Result Document A2mlError) -> Type where
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parse_filePostOk : So (parse_filePost result) -> parse_filePostSatisfied result
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||| Proof that serialise/deserialise round-trips for `parse_file` results
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public export
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data parse_fileRoundTrip : Type where
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parse_fileRoundTripOk : parse_fileRoundTrip
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||| Proof that `parse_inlines` is total (covers all inputs)
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public export
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data parse_inlinesTotal : Type where
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Isparse_inlinesTotal : parse_inlinesTotal
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||| Proof that preconditions hold for given parameters
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public export
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data parse_inlinesPreSatisfied : (params : parse_inlinesParams) -> Type where
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parse_inlinesPreOk : So (parse_inlinesPre params) -> parse_inlinesPreSatisfied params
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||| Proof that postconditions hold for a given result
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public export
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data parse_inlinesPostSatisfied : (result : List Inline) -> Type where
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parse_inlinesPostOk : So (parse_inlinesPost result) -> parse_inlinesPostSatisfied result
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||| Proof that serialise/deserialise round-trips for `parse_inlines` results
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public export
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data parse_inlinesRoundTrip : Type where
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parse_inlinesRoundTripOk : parse_inlinesRoundTrip
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-- ================================================================
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-- FFI Declarations (implemented in Zig bridge)
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-- ================================================================
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export
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%foreign "C:document_parser_parse, libdocument_parser_verified"
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prim__parse : Bits64 -> PrimIO Bits32
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export
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%foreign "C:document_parser_parse_file, libdocument_parser_verified"
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prim__parse_file : Bits64 -> PrimIO Bits32
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export
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%foreign "C:document_parser_parse_inlines, libdocument_parser_verified"
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prim__parse_inlines : Bits64 -> PrimIO Bits32
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-- ================================================================
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-- Safe Wrappers (enforce contracts at the type level)
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-- ================================================================
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||| Safe wrapper for `parse` with contract enforcement.
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export
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parse : (params : parseParams) -> {auto prf : parsePreSatisfied params} -> IO (Either String Result Document A2mlError)
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parse params = do
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rc <- primIO (prim__parse params.arg0)
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if rc == 0
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then pure (Right ())
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else pure (Left "Error in parse")
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||| Safe wrapper for `parse_file` with contract enforcement.
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export
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parse_file : (params : parse_fileParams) -> {auto prf : parse_filePreSatisfied params} -> IO (Either String Result Document A2mlError)
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parse_file params = do
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rc <- primIO (prim__parse_file params.arg0)
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if rc == 0
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then pure (Right ())
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else pure (Left "Error in parse_file")
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||| Safe wrapper for `parse_inlines` with contract enforcement.
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export
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parse_inlines : (params : parse_inlinesParams) -> {auto prf : parse_inlinesPreSatisfied params} -> IO (Either String List Inline)
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parse_inlines params = do
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rc <- primIO (prim__parse_inlines params.arg0)
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if rc == 0
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then pure (Right ())
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else pure (Left "Error in parse_inlines")
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-- ================================================================
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-- Verification
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-- ================================================================
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||| Witness that all proof obligations for this interface are met.
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public export
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data AllProofsComplete : Type where
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MkAllProofsComplete :
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parseTotal ->
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parse_fileTotal ->
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parse_inlinesTotal ->
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AllProofsComplete
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||| Verification entry point.
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export
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verify : IO ()
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verify = putStrLn "All proofs verified."

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