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/*
* Copyright 2024 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "wat-parser-internal.h"
namespace wasm::WATParser {
Result<> parseDefinitions(
ParseDeclsCtx& decls,
Lexer& input,
IndexMap& typeIndices,
std::vector<HeapType>& types,
std::unordered_map<Index, HeapType>& implicitTypes,
std::unordered_map<HeapType, std::unordered_map<Name, Index>>& typeNames) {
// Parse definitions.
// TODO: Parallelize this.
ParseDefsCtx ctx(input,
decls.wasm,
types,
implicitTypes,
typeNames,
decls.implicitElemIndices,
typeIndices);
CHECK_ERR(parseDefs(ctx, decls.tableDefs, table));
CHECK_ERR(parseDefs(ctx, decls.globalDefs, global));
CHECK_ERR(parseDefs(ctx, decls.startDefs, start));
CHECK_ERR(parseDefs(ctx, decls.elemDefs, elem));
CHECK_ERR(parseDefs(ctx, decls.dataDefs, data));
for (Index i = 0; i < decls.funcDefs.size(); ++i) {
ctx.index = i;
auto* f = decls.wasm.functions[i].get();
WithPosition with(ctx, decls.funcDefs[i].pos);
ctx.setSrcLoc(decls.funcDefs[i].annotations);
if (!f->imported()) {
CHECK_ERR(ctx.visitFunctionStart(f));
}
if (auto parsed = func(ctx)) {
CHECK_ERR(parsed);
} else {
auto im = import_(ctx);
assert(im);
CHECK_ERR(im);
}
if (!f->imported()) {
auto end = ctx.irBuilder.visitEnd();
if (auto* err = end.getErr()) {
return ctx.in.err(decls.funcDefs[i].pos, err->msg);
}
}
}
// Parse exports.
// TODO: It would be more technically correct to interleave these properly
// with the implicit inline exports in other module field definitions.
for (auto pos : decls.exportDefs) {
WithPosition with(ctx, pos);
auto parsed = export_(ctx);
CHECK_ERR(parsed);
assert(parsed);
}
return Ok{};
}
Result<Literal> parseConst(Lexer& lexer) {
Module wasm;
ParseDefsCtx ctx(lexer, wasm, {}, {}, {}, {}, {});
auto inst = foldedinstr(ctx);
CHECK_ERR(inst);
auto expr = ctx.irBuilder.build();
if (auto* err = expr.getErr()) {
return lexer.err(err->msg);
}
auto* e = *expr;
if (!e->is<Const>() && !e->is<RefNull>() && !e->is<RefI31>()) {
return lexer.err("expected constant");
}
lexer = ctx.in;
return getLiteralFromConstExpression(e);
}
} // namespace wasm::WATParser
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