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// Copyright 2011 Google Inc. All Rights Reserved.
//
// 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 NINJA_MANIFEST_PARSER_H_
#define NINJA_MANIFEST_PARSER_H_
#include <string>
using namespace std;
#include "lexer.h"
struct BindingEnv;
struct EvalString;
struct State;
/// Parses .ninja files.
struct ManifestParser {
struct FileReader {
virtual ~FileReader() {}
virtual bool ReadFile(const string& path, string* content, string* err) = 0;
};
ManifestParser(State* state, FileReader* file_reader,
bool dupe_edge_should_err = false);
/// Load and parse a file.
bool Load(const string& filename, string* err, Lexer* parent = NULL);
/// Parse a text string of input. Used by tests.
bool ParseTest(const string& input, string* err) {
quiet_ = true;
return Parse("input", input, err);
}
private:
/// Parse a file, given its contents as a string.
bool Parse(const string& filename, const string& input, string* err);
/// Parse various statement types.
bool ParsePool(string* err);
bool ParseRule(string* err);
bool ParseLet(string* key, EvalString* val, string* err);
bool ParseEdge(string* err);
bool ParseDefault(string* err);
/// Parse either a 'subninja' or 'include' line.
bool ParseFileInclude(bool new_scope, string* err);
/// If the next token is not \a expected, produce an error string
/// saying "expectd foo, got bar".
bool ExpectToken(Lexer::Token expected, string* err);
State* state_;
BindingEnv* env_;
FileReader* file_reader_;
Lexer lexer_;
bool dupe_edge_should_err_;
bool quiet_;
};
#endif // NINJA_MANIFEST_PARSER_H_
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