org.stekikun.dolmen.codegen

Class GrammarOutput

java.lang.Object

org.stekikun.dolmen.codegen.GrammarOutput

public final class GrammarOutput
extends Object

This class generates a Java class that implements parsing for a given grammar description.

Each public non-terminal in the grammar description leads to a public entry point in the generated grammar.

The generated Java class also contains classes to represent the various tokens declared in the grammar.

Author:

Stéphane Lescuyer

See Also:

TokensOutput, output(Writer, String, Config, Grammar, Grammars.PredictionTable)

Method Summary

Modifier and Type	Method and Description
protected void	genParser(String name)
static SourceMapping	output(Writer writer, String className, Config config, Grammar grammar, Grammars.PredictionTable predict) Outputs to writer the definition of a top-down parser for the given grammar, provided the prediction table predict has no conflicts.
static SourceMapping	outputDefault(Writer writer, String className, Grammar grammar, Grammars.PredictionTable predict) Same as output(Writer, String, Config, Grammar, Grammars.PredictionTable) with the default configuration Config.DEFAULT.

Methods inherited from class java.lang.Object

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

Method Detail

genParser

protected void genParser(String name)

output

public static SourceMapping output(Writer writer,
                                   String className,
                                   Config config,
                                   Grammar grammar,
                                   Grammars.PredictionTable predict)
                            throws IOException

Outputs to writer the definition of a top-down parser for the given grammar, provided the prediction table predict has no conflicts. The name of the generated Java class is className and specific configuration for the code generation is passed via config.

Returns the source mappings computed when emitting the code. Positions in generated code are computed assuming that writer is fresh, unless a CountingWriter is passed in which case its current character count is taken into account.

Parameters:

writer -

className -

config -

grammar -

predict -

Throws:

IOException

outputDefault

public static SourceMapping outputDefault(Writer writer,
                                          String className,
                                          Grammar grammar,
                                          Grammars.PredictionTable predict)
                                   throws IOException

Same as output(Writer, String, Config, Grammar, Grammars.PredictionTable) with the default configuration Config.DEFAULT.

Parameters:

writer -

className -

grammar -

predict -

Throws:

IOException