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/*
* Copyright 2015 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 wasm_parsing_h
#define wasm_parsing_h
#include <cmath>
#include <ostream>
#include <sstream>
#include <string>
#include "mixed_arena.h"
#include "shared-constants.h"
#include "support/colors.h"
#include "support/utilities.h"
#include "wasm-traversal.h"
#include "wasm.h"
namespace wasm {
struct ParseException {
std::string text;
size_t line, col;
ParseException() : text("unknown parse error"), line(-1), col(-1) {}
ParseException(std::string text) : text(text), line(-1), col(-1) {}
ParseException(std::string text, size_t line, size_t col)
: text(text), line(line), col(col) {}
void dump(std::ostream& o) const;
};
// Helper for parsers that may not have unique label names. This transforms
// the names into unique ones, as required by Binaryen IR.
struct UniqueNameMapper {
std::vector<Name> labelStack;
// name in source => stack of uniquified names
std::map<Name, std::vector<Name>> labelMappings;
std::map<Name, Name> reverseLabelMapping; // uniquified name => name in source
Index otherIndex = 0;
Name getPrefixedName(Name prefix);
// receives a source name. generates a unique name, pushes it, and returns it
Name pushLabelName(Name sName);
void popLabelName(Name name);
Name sourceToUnique(Name sName);
Name uniqueToSource(Name name);
void clear();
// Given an expression, ensures all names are unique
static void uniquify(Expression* curr);
};
} // namespace wasm
#endif // wasm_parsing_h
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