org.stekikun.dolmen.codegen

Class TokensOutput

java.lang.Object

org.stekikun.dolmen.codegen.TokensOutput

public final class TokensOutput
extends Object

This class generates a Java class to represent the various tokens declared in a grammar description.

The generated Java class is the base class for all token instances. It contains a static inner enum class Kind listing all the various token kinds (the enum constants follow the token names).

Each token without value is represented by a singleton member of the abstract type, whereas each valued token is represented by a specific subclass, with a value field and a static factory to be used in the lexer's semantic actions.

Author:

Stéphane Lescuyer

See Also:

output(Writer, String, Config, int, List)

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TokensOutput(String className, Config config, List<TokenDecl> tokenDecls, CodeBuilder buf)

Method Summary

Modifier and Type	Method and Description
protected void	genTokens()
static void	output(Writer writer, String className, Config config, int level, List<TokenDecl> tokenDecls) Outputs to writer the definition of a token class for the tokens described in tokenDecls.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TokensOutput

protected TokensOutput(String className,
                       Config config,
                       List<TokenDecl> tokenDecls,
                       CodeBuilder buf)

Method Detail

genTokens

protected void genTokens()

output

public static void output(Writer writer,
                          String className,
                          Config config,
                          int level,
                          List<TokenDecl> tokenDecls)
                   throws IOException

Outputs to writer the definition of a token class for the tokens described in tokenDecls. The token class name is given by className and code is emitted starting at the given indentation level.

Parameters:

writer -

className -

config -

level -

tokenDecls -

Throws:

IOException