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/*
* Copyright 2016 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.
*/
#ifndef WABT_IR_UTIL_H_
#define WABT_IR_UTIL_H_
#include "src/common.h"
#include "src/ir.h"
namespace wabt {
struct Label {
Label(LabelType label_type,
const std::string& name,
const TypeVector& param_types,
const TypeVector& result_types)
: name(name),
label_type(label_type),
param_types(param_types),
result_types(result_types) {}
std::string name;
LabelType label_type;
TypeVector param_types;
TypeVector result_types;
};
struct ModuleContext {
ModuleContext(const Module &module) : module(module) {}
Index GetLabelStackSize() const { return label_stack_.size(); }
const Label* GetLabel(const Var& var) const;
Index GetLabelArity(const Var& var) const;
void SetTopLabelType(LabelType label_type) {
label_stack_.back().label_type = label_type;
}
Index GetFuncParamCount(const Var& var) const;
Index GetFuncResultCount(const Var& var) const;
void BeginBlock(LabelType label_type, const Block& block);
void EndBlock();
void BeginFunc(const Func& func);
void EndFunc();
struct Arities {
Index nargs;
Index nreturns;
bool unreachable;
Arities(Index na, Index nr, bool ur = false)
: nargs(na), nreturns(nr), unreachable(ur) {}
};
Arities GetExprArity(const Expr& expr) const;
const Module &module;
private:
const Func* current_func_ = nullptr;
std::vector<Label> label_stack_;
};
} // namespace wabt
#endif /* WABT_IR_UTIL_H_ */
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