move src into subdir

1 files changed, 101 insertions, 0 deletions

diff --git a/src/parsers.h b/src/parsers.h
new file mode 100644
index 0000000..fc20436
--- /dev/null
+++ b/src/parsers.h
@@ -0,0 +1,101 @@
+#ifndef NINJA_PARSERS_H_
+#define NINJA_PARSERS_H_
+
+#include <string>
+#include <vector>
+
+using namespace std;
+
+struct BindingEnv;
+
+struct Token {
+  enum Type {
+    NONE,
+    UNKNOWN,
+    IDENT,
+    RULE,
+    BUILD,
+    SUBNINJA,
+    NEWLINE,
+    EQUALS,
+    COLON,
+    PIPE,
+    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 {
+  struct FileReader {
+    virtual bool ReadFile(const string& path, string* content, string* err) = 0;
+  };
+
+  ManifestParser(State* state, FileReader* file_reader);
+  void set_root(const string& root) { root_ = root; }
+
+  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);
+  bool ParseSubNinja(string* err);
+
+  string ExpandFile(const string& file);
+
+  State* state_;
+  BindingEnv* env_;
+  FileReader* file_reader_;
+  Tokenizer tokenizer_;
+  string builddir_;
+  string root_;  // Absolute path to root ninja file.
+};
+
+#endif  // NINJA_PARSERS_H_