antlr3lexer.h File Reference

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Detailed Description

Base interface for any ANTLR3 lexer.

An ANLTR3 lexer builds from two sets of components:

• The runtime components that provide common functionality such as traversing character streams, building tokens for output and so on.
• The generated rules and struutre of the actual lexer, which call upon the runtime components.

A lexer class contains a character input stream, a base recognizer interface (which it will normally implement) and a token source interface (which it also implements. The Tokensource interface is called by a token consumer (such as a parser, but in theory it can be anything that wants a set of abstract tokens in place of a raw character stream.

So then, we set up a lexer in a sequence akin to:

• Create a character stream (something which implements ANTLR3_INPUT_STREAM) and initialize it.
• Create a lexer interface and tell it where it its input stream is. This will cause the creation of a base recognizer class, which it will override with its own implementations of some methods. The lexer creator can also then in turn override anything it likes.
• The lexer token source interface is then passed to some interface that knows how to use it, byte calling for a next token.
• When a next token is called, let ze lexing begin.

#include <antlr3defs.h>
#include <antlr3input.h>
#include <antlr3commontoken.h>
#include <antlr3tokenstream.h>
#include <antlr3baserecognizer.h>

Include dependency graph for antlr3lexer.h:

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Data Structures
struct	ANTLR3_LEXER_struct
Defines
#define	ANTLR3_STRING_TERMINATOR   0xFFFFFFFF
Typedefs
typedef struct ANTLR3_LEXER_struct	ANTLR3_LEXER

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Define Documentation

#define ANTLR3_STRING_TERMINATOR   0xFFFFFFFF

Referenced by matchs().

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Typedef Documentation

typedef struct ANTLR3_LEXER_struct ANTLR3_LEXER