Package org.antlr.mojo.antlr4

Class Antlr4Mojo.CustomTool

java.lang.Object

org.antlr.v4.Tool

org.antlr.mojo.antlr4.Antlr4Mojo.CustomTool

Enclosing class:

Antlr4Mojo

private final class Antlr4Mojo.CustomTool
extends Tool

Nested Class Summary

Nested classes/interfaces inherited from class org.antlr.v4.Tool

Tool.Option, Tool.OptionArgType

Field Summary

Fields inherited from class org.antlr.v4.Tool

ALL_GRAMMAR_EXTENSIONS, args, errMgr, exact_output_dir, force_atn, gen_dependencies, gen_listener, gen_visitor, generate_ATN_dot, genPackage, GRAMMAR_EXTENSION, grammarEncoding, grammarFiles, grammarOptions, haveOutputDir, inputDirectory, internalOption_PrintGrammarTree, internalOption_ShowATNConfigsInDFA, launch_ST_inspector, LEGACY_GRAMMAR_EXTENSION, libDirectory, log, logMgr, longMessages, msgFormat, optionDefs, outputDirectory, return_dont_exit, ST_inspector_wait_for_close, VERSION, warnings_are_errors

Constructor Summary

Constructors

Constructor	Description
CustomTool(String[] args)

Method Summary

Modifier and Type	Method	Description
Writer	getOutputFileWriter(Grammar g, String fileName)	This method is used by all code generators to create new output files.
void	process(Grammar g, boolean gencode)	To process a grammar, we load all of its imported grammars into subordinate grammar objects.

Methods inherited from class org.antlr.v4.Tool

addListener, checkForRuleIssues, createGrammar, error, exit, findOptionValueAST, generateATNs, getImportedGrammarFile, getListeners, getNumErrors, getOutputDirectory, handleArgs, handleOptionSetArg, help, info, loadGrammar, loadImportedGrammar, log, log, main, panic, parse, parseGrammar, parseGrammarFromString, processGrammarsOnCommandLine, processNonCombinedGrammar, removeListener, removeListeners, sortGrammarByTokenVocab, version, warning, writeDOTFile, writeDOTFile

Methods inherited from class java.lang.Object

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

Constructor Details

CustomTool

public CustomTool(String[] args)

Method Details

process

public void process(Grammar g,
 boolean gencode)

Description copied from class: Tool

To process a grammar, we load all of its imported grammars into subordinate grammar objects. Then we merge the imported rules into the root grammar. If a root grammar is a combined grammar, we have to extract the implicit lexer. Once all this is done, we process the lexer first, if present, and then the parser grammar

Overrides:

process in class Tool

getOutputFileWriter

public Writer getOutputFileWriter(Grammar g,
 String fileName)
                           throws IOException

Description copied from class: Tool

This method is used by all code generators to create new output files. If the outputDir set by -o is not present it will be created. The final filename is sensitive to the output directory and the directory where the grammar file was found. If -o is /tmp and the original grammar file was foo/t.g4 then output files go in /tmp/foo. The output dir -o spec takes precedence if it's absolute. E.g., if the grammar file dir is absolute the output dir is given precedence. "-o /tmp /usr/lib/t.g4" results in "/tmp/T.java" as output (assuming t.g4 holds T.java). If no -o is specified, then just write to the directory where the grammar file was found. If outputDirectory==null then write a String.

Overrides:

getOutputFileWriter in class Tool

Throws:

IOException