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(* SPDX-License-Identifier: AGPL-3.0-or-later *)
(* Copyright © 2021-2024 OCamlPro *)
(* Written by the Owi programmers *)
(** Module providing functions to parse a wasm script from various kind of
inputs. *)
open Syntax
let token_to_string = function
| Text_parser.OFFSET -> "offset"
| UNREACHABLE -> "unreachable"
| TYPE -> "type"
| THEN -> "then"
| TABLE_SIZE -> "table.size"
| TABLE_SET -> "table.set"
| TABLE_INIT -> "table.init"
| TABLE_GROW -> "table.grow"
| TABLE_GET -> "table.get"
| TABLE_FILL -> "table.fill"
| TABLE_COPY -> "table.copy"
| TABLE -> "table"
| SUB -> "sub"
| STRUCT_SET -> "struct.set"
| STRUCT_NEW_CANON_DEFAULT -> "struct.new_canon_default"
| STRUCT_NEW_CANON -> "struct.new_canon"
| STRUCT_GET_S -> "struct.get_s"
| STRUCT_GET -> "struct.get"
| STRUCTREF -> "structref"
| STRUCT -> "struct"
| START -> "start"
| SELECT -> "select"
| RPAR -> ")"
| RETURN_CALL_REF -> "return_call_ref"
| RETURN_CALL_INDIRECT -> "return_call_indirect"
| RETURN_CALL -> "return_call"
| RETURN -> "return"
| RESULT -> "result"
| REGISTER -> "register"
| REF_TEST -> "ref.test"
| REF_STRUCT -> "ref.struct"
| REF_NULL -> "ref.null"
| REF_IS_NULL -> "ref.is_null"
| REF_I31 -> "ref.i31"
| REF_HOST -> "ref.host"
| REF_FUNC -> "ref.func"
| REF_EXTERN -> "ref.extern"
| REF_EQ -> "ref.eq"
| REF_CAST -> "ref.cast"
| REF_AS_NON_NULL -> "ref.as_non_null"
| REF_ARRAY -> "ref.array"
| REF -> "ref"
| REC -> "rec"
| QUOTE -> "quote"
| PARAM -> "param"
| NULL_REF -> "null.ref"
| NULL_FUNC_REF -> "null.func_ref"
| NULL_EXTERN_REF -> "null.extern_ref"
| NULL -> "null"
| NOP -> "nop"
| NONE -> "none"
| NOFUNC -> "nofunc"
| NOEXTERN -> "noextern"
| NAN_CANON -> "nan_canon"
| NAN_ARITH -> "nan_arith"
| MUTABLE -> "mutable"
| MODULE -> "module"
| MEMORY_SIZE -> "memory.size"
| MEMORY_INIT -> "memory.init"
| MEMORY_GROW -> "memory.grow"
| MEMORY_FILL -> "memory.fill"
| MEMORY_COPY -> "memory.copy"
| MEMORY -> "memory"
| LPAR -> "("
| LOOP -> "loop"
| LOCAL_TEE -> "local.tee"
| LOCAL_SET -> "local.set"
| LOCAL_GET -> "local.get"
| LOCAL -> "local"
| ITEM -> "item"
| INVOKE -> "invoke"
| IMPORT -> "import"
| IF -> "if"
| I8 -> "i8"
| I64_XOR -> "i64.xor"
| I64_TRUNC_SAT_F64_U -> "i64.trunc_sat_f64_u"
| I64_TRUNC_SAT_F64_S -> "i64.trunc_sat_f64_s"
| I64_TRUNC_SAT_F32_U -> "i64.trunc_sat_f32_s"
| I64_TRUNC_SAT_F32_S -> "i64.trunc_sat_f32_u"
| I64_TRUNC_F64_U -> "i64.trunc_f64_u"
| I64_TRUNC_F64_S -> "i64.trunc_f64_s"
| I64_TRUNC_F32_U -> "i64.trunc_f32_u"
| I64_TRUNC_F32_S -> "i64.trunc_f32_s"
| I64_SUB -> "i64.sub"
| I64_STORE8 -> "i64.store8"
| I64_STORE32 -> "i64.store32"
| I64_STORE16 -> "i64.store16"
| I64_STORE -> "i64.store"
| I64_SHR_U -> "i64.shr_u"
| I64_SHR_S -> "i64.shr_s"
| I64_SHL -> "i64.shl"
| I64_ROTR -> "i64.rotr"
| I64_ROTL -> "i64.rotl"
| I64_REM_U -> "i64.rem_u"
| I64_REM_S -> "i64.rem_s"
| I64_REINTERPRET_F64 -> "i64.reinterpret_f64"
| I64_REINTERPRET_F32 -> "i64.reinterpret_f32"
| I64_POPCNT -> "i64.popcnt"
| I64_OR -> "i64.or"
| I64_NE -> "i64.ne"
| I64_MUL -> "i64.mul"
| I64_LT_U -> "i64.lt_u"
| I64_LT_S -> "i64.lt_s"
| I64_LOAD8_U -> "i64.load8_u"
| I64_LOAD8_S -> "i64.load32_u"
| I64_LOAD32_U -> "i64.load32_u"
| I64_LOAD32_S -> "i64.load32_s"
| I64_LOAD16_U -> "i64.load16_u"
| I64_LOAD16_S -> "i64.load16_s"
| I64_LOAD -> "i64.load"
| I64_LE_U -> "i64.le_u"
| I64_LE_S -> "i64.le_q"
| I64_GT_U -> "i64.gt_u"
| I64_GT_S -> "i64.gt_s"
| I64_GE_U -> "i64.ge_u"
| I64_GE_S -> "i64.ge_s"
| I64_EXTEND_I32_U -> "i64.extend_i32_u"
| I64_EXTEND_I32_S -> "i64.extend_i32_s"
| I64_EXTEND8_S -> "i64_extend8_s"
| I64_EXTEND32_S -> "i64.extend32_s"
| I64_EXTEND16_S -> "i64.extend16_s"
| I64_EQZ -> "i64.eqz"
| I64_EQ -> "i64.eq"
| I64_DIV_U -> "i64.div_u"
| I64_DIV_S -> "i64.div_s"
| I64_CTZ -> "i64.ctz"
| I64_CONST -> "i64.const"
| I64_CLZ -> "i64.clz"
| I64_AND -> "i64.and"
| I64_ADD -> "i64.add"
| I64 -> "i64"
| I32_XOR -> "i32.xor"
| I32_WRAP_I64 -> "i32.wrap_i64"
| I32_TRUNC_SAT_F64_U -> "i32.trunc_sat_f64_u"
| I32_TRUNC_SAT_F64_S -> "i32.trunc_sat_f64_s"
| I32_TRUNC_SAT_F32_U -> "i32.trunc_sat_f32_u"
| I32_TRUNC_SAT_F32_S -> "i32.trunc_sat_f32_s"
| I32_TRUNC_F64_U -> "i32.trunc_f64_u"
| I32_TRUNC_F64_S -> "i32.trunc_f64_s"
| I32_TRUNC_F32_U -> "i32.trunc_f32_u"
| I32_TRUNC_F32_S -> "i32.trunc_f32_s"
| I32_SUB -> "i32.sub"
| I32_STORE8 -> "i32.store8"
| I32_STORE16 -> "i32.store16"
| I32_STORE -> "i32.store"
| I32_SHR_U -> "i32.shr_u"
| I32_SHR_S -> "i32.shr_s"
| I32_SHL -> "i32.shl"
| I32_ROTR -> "i32.rotr"
| I32_ROTL -> "i32.rotl"
| I32_REM_U -> "i32.rem_u"
| I32_REM_S -> "i32.rem_s"
| I32_REINTERPRET_F64 -> "i32.reinterpret_f64"
| I32_REINTERPRET_F32 -> "i32.reinterpret_f32"
| I32_POPCNT -> "i32.popcnt"
| I32_OR -> "i32.or"
| I32_NE -> "i32.ne"
| I32_MUL -> "i32.mul"
| I32_LT_U -> "i32.lt_u"
| I32_LT_S -> "i32.lt_s"
| I32_LOAD8_U -> "i32.load8_u"
| I32_LOAD8_S -> "i32.load8_s"
| I32_LOAD16_U -> "i32.load16_u"
| I32_LOAD16_S -> "i32.load16_s"
| I32_LOAD -> "i32.load"
| I32_LE_U -> "i32.le_u"
| I32_LE_S -> "i32.le_s"
| I32_GT_U -> "i32.gt_u"
| I32_GT_S -> "i32.gt_s"
| I32_GE_U -> "i32.ge_u"
| I32_GE_S -> "i32.ge_s"
| I32_EXTEND8_S -> "i32.extend8_s"
| I32_EXTEND16_S -> "i32.extend16_s"
| I32_EQZ -> "i32.eqz"
| I32_EQ -> "i32.eq"
| I32_DIV_U -> "i32.div_u"
| I32_DIV_S -> "i32.div_s"
| I32_CTZ -> "i32.ctz"
| I32_CONST -> "i32.const"
| I32_CLZ -> "i32.clz"
| I32_AND -> "i32;and"
| I32_ADD -> "i32.add"
| I32 -> "i32"
| I31_REF -> "i31.ref"
| I31_GET_U -> "i31.get_u"
| I31_GET_S -> "i31.get_s"
| I31 -> "i31"
| I16 -> "i16"
| GLOBAL_SET -> "global.set"
| GLOBAL_GET -> "global.get"
| GLOBAL -> "global"
| GET -> "get"
| FUNC_REF -> "func_ref"
| FUNC -> "func"
| FINAL -> "final"
| FIELD -> "field"
| F64_TRUNC -> "f64.trunc"
| F64_SUB -> "f64.sub"
| F64_STORE -> "f64.store"
| F64_SQRT -> "f64.sqrt"
| F64_REINTERPRET_I64 -> "f64.reinterpret_i64"
| F64_REINTERPRET_I32 -> "f64.reinterpret_i32"
| F64_PROMOTE_F32 -> "f64.promote_f32"
| F64_NEG -> "f64.neg"
| F64_NEAREST -> "f64.nearest"
| F64_NE -> "f64.ne"
| F64_MUL -> "f64.mul"
| F64_MIN -> "f64.min"
| F64_MAX -> "f64.max"
| F64_LT -> "f64.lt"
| F64_LOAD -> "f64.load"
| F64_LE -> "f64.le"
| F64_GT -> "f64.gt"
| F64_GE -> "f64.ge"
| F64_FLOOR -> "f64.floor"
| F64_EQ -> "f64.eq"
| F64_DIV -> "f64.div"
| F64_COPYSIGN -> "f64.copysign"
| F64_CONVERT_I64_U -> "f64.convert_i64_u"
| F64_CONVERT_I64_S -> "f64.convert_i64_s"
| F64_CONVERT_I32_U -> "f64.convert_i32_u"
| F64_CONVERT_I32_S -> "f64.convert_i32_s"
| F64_CONST -> "f64.const"
| F64_CEIL -> "f64.ceil"
| F64_ADD -> "f64.add"
| F64_ABS -> "f64.abs"
| F64 -> "f64"
| F32_TRUNC -> "f32.trunc"
| F32_SUB -> "f32.sub"
| F32_STORE -> "f32.store"
| F32_SQRT -> "f32.sqrt"
| F32_REINTERPRET_I64 -> "f32.reinterpret_i64"
| F32_REINTERPRET_I32 -> "f32.reinterpret_i32"
| F32_NEG -> "f32.neg"
| F32_NEAREST -> "f32.nearest"
| F32_NE -> "f32.ne"
| F32_MUL -> "f32.mul"
| F32_MIN -> "f32.min"
| F32_MAX -> "f32.max"
| F32_LT -> "f32.lt"
| F32_LOAD -> "f32.load"
| F32_LE -> "f32.le"
| F32_GT -> "f32.gt"
| F32_GE -> "f32.ge"
| F32_FLOOR -> "f32.floor"
| F32_EQ -> "f32.eq"
| F32_DIV -> "f32.div"
| F32_DEMOTE_F64 -> "f32.demote_f64"
| F32_COPYSIGN -> "f32.copysign"
| F32_CONVERT_I64_U -> "f32.convert_i64_u"
| F32_CONVERT_I64_S -> "f32.convert_i64_s"
| F32_CONVERT_I32_U -> "f32.convert_i32_u"
| F32_CONVERT_I32_S -> "f32.convert_i32_s"
| F32_CONST -> "f32.const"
| F32_CEIL -> "f32.ceil"
| F32_ADD -> "f32.add"
| F32_ABS -> "f32.abs"
| F32 -> "f32"
| EXTERN_REF -> "externref"
| EXTERN_INTERNALIZE -> "extern.internalize"
| EXTERN_EXTERNALIZE -> "extern.externalize"
| EXTERN -> "extern"
| EXPORT -> "export"
| EQ_REF -> "eqref"
| EQUAL -> "equal"
| EQ -> "eq"
| EOF -> "EOF"
| END -> "end"
| ELSE -> "else"
| ELEM_DROP -> "elem.drop"
| ELEM -> "elem"
| DROP -> "drop"
| DECLARE -> "declare"
| DATA_DROP -> "data.drop"
| DATA -> "data"
| CALL_REF -> "call_ref"
| CALL_INDIRECT -> "call_indirect"
| CALL -> "call"
| BR_TABLE -> "br_table"
| BR_ON_NULL -> "br_on_null"
| BR_ON_NON_NULL -> "br_on_non_null"
| BR_ON_CAST_FAIL -> "br_on_cast_fail"
| BR_ON_CAST -> "br_on_cast"
| BR_IF -> "br_if"
| BR -> "br"
| BLOCK -> "block"
| BINARY -> "binary"
| ASSERT_UNLINKABLE -> "assert_unlinkable"
| ASSERT_TRAP -> "assert_trap"
| ASSERT_RETURN -> "assert_return"
| ASSERT_MALFORMED -> "assert_malformed"
| ASSERT_INVALID -> "assert_exhaustion"
| ASSERT_EXHAUSTION -> "assert_exhaustion"
| ARRAY_SET -> "array.set"
| ARRAY_REF -> "arrayrref"
| ARRAY_NEW_CANON_FIXED -> "array.new_canon_fixed"
| ARRAY_NEW_CANON_ELEM -> "array.new_canon_elem"
| ARRAY_NEW_CANON_DEFAULT -> "array.new_canon_default"
| ARRAY_NEW_CANON_DATA -> "array.new_canon_data"
| ARRAY_NEW_CANON -> "array.new_canon"
| ARRAY_LEN -> "array.len"
| ARRAY_GET_U -> "array.get_u"
| ARRAY_GET -> "array.get"
| ARRAY -> "array"
| ANY_REF -> "anyref"
| ANY -> "any"
| ALIGN -> "align"
| NUM s -> Fmt.str "%s" s
| NAME s -> Fmt.str {|"%s"|} s
| ID s -> Fmt.str "$%s" s
module Make (M : sig
type t
val rule : (Lexing.lexbuf -> Text_parser.token) -> Lexing.lexbuf -> t
end) =
struct
let from_lexbuf =
let parser = MenhirLib.Convert.Simplified.traditional2revised M.rule in
fun buf ->
Log.debug0 "parsing ...@\n";
let provider () =
let tok = Text_lexer.token buf in
let start, stop = Sedlexing.lexing_positions buf in
(tok, start, stop)
in
try Ok (parser provider) with
| Types.Parse_fail msg -> Error (`Parse_fail msg)
| Text_lexer.Illegal_escape msg -> Error (`Illegal_escape msg)
| Text_lexer.Unknown_operator msg -> Error (`Lexer_unknown_operator msg)
| Text_lexer.Unexpected_character msg ->
Error (`Lexer_unknown_operator msg)
| Text_parser.Error ->
let tok = Text_lexer.token buf |> token_to_string in
Error (`Unexpected_token tok)
let from_file filename =
let open Syntax in
let* res =
Bos.OS.File.with_ic filename
(fun chan () ->
let lb = Sedlexing.Utf8.from_channel chan in
Sedlexing.set_filename lb (Fpath.to_string filename);
from_lexbuf lb )
()
in
res
let from_string s = from_lexbuf (Sedlexing.Utf8.from_string s)
let from_channel c = from_lexbuf (Sedlexing.Utf8.from_channel c)
end
module Text = struct
module Script = Make (struct
type t = Text.script
let rule = Text_parser.script
end)
module Module = Make (struct
type t = Text.modul
let rule = Text_parser.modul
end)
module Inline_module = Make (struct
type t = Text.modul
let rule = Text_parser.inline_module
end)
end
module Binary = struct
module Module = Binary_parser
end
let guess_from_file file =
match Fpath.get_ext ~multi:false file with
| ".wat" ->
let+ m = Text.Module.from_file file in
Kind.Wat m
| ".wast" ->
let+ m = Text.Script.from_file file in
Kind.Wast m
| ".wasm" ->
let+ m = Binary.Module.from_file file in
Kind.Wasm m
| ext -> Error (`Unsupported_file_extension ext)