antlr3lexer (3) - Linux Manuals


include/antlr3lexer.h -

Base interface for any ANTLR3 lexer.


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

Data Structures

struct ANTLR3_LEXER_struct




typedef struct ANTLR3_LEXER_struct ANTLR3_LEXER

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.

Define Documentation


Referenced by matchs().

Typedef Documentation

typedef struct ANTLR3_LEXER_struct



Generated automatically by Doxygen for ANTLR3C from the source code.