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#ifndef NINJA_PARSERS_H_
#define NINJA_PARSERS_H_
#include <string>
#include <vector>
using namespace std;
struct Token {
enum Type {
NONE,
UNKNOWN,
IDENT,
RULE,
BUILD,
NEWLINE,
EQUALS,
COLON,
INDENT,
OUTDENT,
TEOF
};
explicit Token(Type type) : type_(type) {}
void Clear() { type_ = NONE; extra_.clear(); }
string AsString() const;
Type type_;
const char* pos_;
string extra_;
};
struct Tokenizer {
Tokenizer()
: token_(Token::NONE), line_number_(1),
last_indent_(0), cur_indent_(-1) {}
void Start(const char* start, const char* end);
bool Error(const string& message, string* err);
const Token& token() const { return token_; }
void SkipWhitespace(bool newline=false);
bool Newline(string* err);
bool ExpectToken(Token::Type expected, string* err);
bool ReadIdent(string* out);
bool ReadToNewline(string* text, string* err);
Token::Type PeekToken();
void ConsumeToken();
const char* cur_;
const char* end_;
const char* cur_line_;
Token token_;
int line_number_;
int last_indent_, cur_indent_;
};
struct MakefileParser {
bool Parse(const string& input, string* err);
Tokenizer tokenizer_;
string out_;
vector<string> ins_;
};
struct State;
struct ManifestParser {
ManifestParser(State* state) : state_(state) {}
bool Load(const string& filename, string* err);
bool Parse(const string& input, string* err);
bool ParseRule(string* err);
bool ParseLet(string* key, string* val, string* err);
bool ParseEdge(string* err);
string ExpandFile(const string& file);
State* state_;
Tokenizer tokenizer_;
string builddir_;
};
#endif // NINJA_PARSERS_H_
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