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/*
* Copyright 2023 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 "contexts.h"
namespace wasm::WATParser {
Result<typename ParseDefsCtx::TypeUseT>
ParseDefsCtx::makeTypeUse(Index pos,
std::optional<HeapTypeT> type,
ParamsT* params,
ResultsT* results) {
if (type && (params || results)) {
std::vector<Type> paramTypes;
if (params) {
paramTypes = getUnnamedTypes(*params);
}
std::vector<Type> resultTypes;
if (results) {
resultTypes = *results;
}
auto sig = Signature(Type(paramTypes), Type(resultTypes));
if (!type->isSignature() || type->getSignature() != sig) {
return in.err(pos, "type does not match provided signature");
}
}
if (type) {
return *type;
}
auto it = implicitTypes.find(pos);
assert(it != implicitTypes.end());
return it->second;
}
Result<> ParseDefsCtx::addGlobal(Name,
const std::vector<Name>&,
ImportNames*,
GlobalTypeT,
std::optional<ExprT> exp,
Index) {
if (exp) {
wasm.globals[index]->init = *exp;
}
return Ok{};
}
Result<> ParseDefsCtx::addImplicitElems(Type,
std::vector<Expression*>&& elems) {
auto& e = wasm.elementSegments[implicitElemIndices.at(index)];
e->data = std::move(elems);
return Ok{};
}
Result<> ParseDefsCtx::addElem(Name,
Name* table,
std::optional<Expression*> offset,
std::vector<Expression*>&& elems,
Index pos) {
auto& e = wasm.elementSegments[index];
if (offset) {
e->offset = *offset;
if (table) {
e->table = *table;
} else if (wasm.tables.size() > 0) {
e->table = wasm.tables[0]->name;
} else {
return in.err(pos, "active element segment with no table");
}
} else {
e->offset = nullptr;
e->table = Name();
}
e->data = std::move(elems);
return Ok{};
}
Result<> ParseDefsCtx::addData(
Name, Name* mem, std::optional<ExprT> offset, DataStringT, Index pos) {
auto& d = wasm.dataSegments[index];
if (offset) {
d->isPassive = false;
d->offset = *offset;
if (mem) {
d->memory = *mem;
} else if (wasm.memories.size() > 0) {
d->memory = wasm.memories[0]->name;
} else {
return in.err(pos, "active data segment with no memory");
}
} else {
d->isPassive = true;
}
return Ok{};
}
} // namespace wasm::WATParser
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