X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Floader%2FTokenizer.h;h=28d808f0da24d3ea05a42a58f271cacab8a4abd1;hb=4309d259becd96ead792678257e910c03a6b4a3d;hp=f363af70bd0169684a247c3bb45262b6dbe6542a;hpb=93971b3ba23e6b51319b07d7d82dcbcf976f8b9a;p=l2e.git

diff --git a/src/loader/Tokenizer.h b/src/loader/Tokenizer.h
index f363af7..28d808f 100644
--- a/src/loader/Tokenizer.h
+++ b/src/loader/Tokenizer.h
@@ -1,14 +1,9 @@
-/*
- * Tokenizer.h
- *
- *  Created on: Aug 26, 2012
- *      Author: holy
- */
-
 #ifndef LOADER_TOKENIZER_H_
 #define LOADER_TOKENIZER_H_
 
 #include <iosfwd>
+#include <ostream>
+#include <stdexcept>
 #include <string>
 
 namespace loader {
@@ -16,7 +11,8 @@ namespace loader {
 class Tokenizer {
 
 public:
-	Tokenizer(std::istream &in) : in(in), isPutback(false) { }
+	explicit Tokenizer(std::istream &in)
+	: in(in), line(1), isPutback(false), skipComments(true) { }
 	~Tokenizer() { }
 private:
 	Tokenizer(const Tokenizer &);
@@ -26,7 +22,7 @@ public:
 	struct Token {
 
 		enum Type {
-			UNKNOWN,
+			UNKNOWN = 0,
 			ANGLE_BRACKET_OPEN = '{',
 			ANGLE_BRACKET_CLOSE = '}',
 			CHEVRON_OPEN = '<',
@@ -35,18 +31,25 @@ public:
 			COMMA = ',',
 			BRACKET_OPEN = '[',
 			BRACKET_CLOSE = ']',
-			NUMBER,
-			STRING,
-			KEYWORD_EXPORT,
-			KEYWORD_FALSE,
-			KEYWORD_INCLUDE,
-			KEYWORD_TRUE,
-			IDENTIFIER,
-			TYPE_NAME,
+			PARENTHESIS_OPEN = '(',
+			PARENTHESIS_CLOSE = ')',
+			NUMBER = '0',
+			STRING = '"',
+			KEYWORD_EXPORT = 'e',
+			KEYWORD_FALSE = 'f',
+			KEYWORD_INCLUDE = 'i',
+			KEYWORD_TRUE = 't',
+			IDENTIFIER = 'x',
+			TYPE_NAME = 'n',
+			COMMENT = 'c',
+			COMMAND = '$',
+			REGISTER = '%',
+			SCRIPT_BEGIN = 's',
+			SCRIPT_END = 'S',
 		};
 
 		Token() : type(UNKNOWN), number(0) { }
-		Token(Type t) : type(t), number(0) { }
+		explicit Token(Type t) : type(t), number(0) { }
 
 		Type type;
 		std::string str;
@@ -54,26 +57,99 @@ public:
 
 	};
 
+	class LexerError: public std::runtime_error {
+	public:
+		LexerError(int line, const std::string &msg)
+		: std::runtime_error(msg), line(line) { }
+		int Line() const { return line; }
+	private:
+		int line;
+	};
+
 	bool HasMore();
 	Token GetNext();
+	const Token &Peek();
 	void Putback(const Token &);
+	int Line() const { return line; }
 
 private:
+	void ScanSpace();
 	Token ReadToken();
 
 	Token ReadNumber();
 	Token ReadString();
 	Token ReadIdentifier();
 
+	Token ReadComment();
+	Token ReadMultilineComment();
+
 	bool CheckKeyword(Token &);
 
 private:
 	std::istream &in;
 	Token putback;
+	int line;
 	bool isPutback;
+	bool skipComments;
 
 };
 
+inline const char *TokenTypeToString(Tokenizer::Token::Type t) {
+	switch (t) {
+		case Tokenizer::Token::ANGLE_BRACKET_OPEN:
+			return "ANGLE_BRACKET_OPEN";
+		case Tokenizer::Token::ANGLE_BRACKET_CLOSE:
+			return "ANGLE_BRACKET_CLOSE";
+		case Tokenizer::Token::CHEVRON_OPEN:
+			return "CHEVRON_OPEN";
+		case Tokenizer::Token::CHEVRON_CLOSE:
+			return "CHEVRON_CLOSE";
+		case Tokenizer::Token::COLON:
+			return "COLON";
+		case Tokenizer::Token::COMMA:
+			return "COMMA";
+		case Tokenizer::Token::COMMAND:
+			return "COMMAND";
+		case Tokenizer::Token::BRACKET_OPEN:
+			return "BRACKET_OPEN";
+		case Tokenizer::Token::BRACKET_CLOSE:
+			return "BRACKET_CLOSE";
+		case Tokenizer::Token::PARENTHESIS_OPEN:
+			return "PARENTHESIS_OPEN";
+		case Tokenizer::Token::PARENTHESIS_CLOSE:
+			return "PARENTHESIS_CLOSE";
+		case Tokenizer::Token::NUMBER:
+			return "NUMBER";
+		case Tokenizer::Token::REGISTER:
+			return "REGISTER";
+		case Tokenizer::Token::SCRIPT_BEGIN:
+			return "SCRIPT_BEGIN";
+		case Tokenizer::Token::SCRIPT_END:
+			return "SCRIPT_END";
+		case Tokenizer::Token::STRING:
+			return "STRING";
+		case Tokenizer::Token::KEYWORD_EXPORT:
+			return "KEYWORD_EXPORT";
+		case Tokenizer::Token::KEYWORD_FALSE:
+			return "KEYWORD_FALSE";
+		case Tokenizer::Token::KEYWORD_INCLUDE:
+			return "KEYWORD_INCLUDE";
+		case Tokenizer::Token::KEYWORD_TRUE:
+			return "KEYWORD_TRUE";
+		case Tokenizer::Token::IDENTIFIER:
+			return "IDENTIFIER";
+		case Tokenizer::Token::TYPE_NAME:
+			return "TYPE_NAME";
+		default:
+			return "UNKNOWN";
+	}
+}
+
+inline std::ostream &operator <<(std::ostream &out, Tokenizer::Token::Type t) {
+	out << TokenTypeToString(t);
+	return out;
+}
+
 }
 
-#endif /* LOADER_TOKENIZER_H_ */
+#endif