mirror of
https://github.com/marcin-szczepanski/jFuzzyLogic.git
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247 lines
8.5 KiB
Java
247 lines
8.5 KiB
Java
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/*
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[The "BSD licence"]
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Copyright (c) 2005-2008 Terence Parr
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.antlr.tool;
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import org.antlr.Tool;
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import org.antlr.misc.Utils;
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import org.antlr.codegen.CodeGenerator;
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import org.antlr.stringtemplate.StringTemplate;
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import org.antlr.stringtemplate.StringTemplateGroup;
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import org.antlr.stringtemplate.language.AngleBracketTemplateLexer;
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import java.util.List;
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import java.util.ArrayList;
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import java.io.*;
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/** Given a grammar file, show the dependencies on .tokens etc...
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* Using ST, emit a simple "make compatible" list of dependencies.
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* For example, combined grammar T.g (no token import) generates:
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*
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* TParser.java : T.g
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* T.tokens : T.g
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* T__g : T.g
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*
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* For tree grammar TP with import of T.tokens:
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*
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* TP.g : T.tokens
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* TP.java : TP.g
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*
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* If "-lib libdir" is used on command-line with -depend, then include the
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* path like
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*
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* TP.g : libdir/T.tokens
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*
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* Pay attention to -o as well:
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*
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* outputdir/TParser.java : T.g
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*
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* So this output shows what the grammar depends on *and* what it generates.
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*
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* Operate on one grammar file at a time. If given a list of .g on the
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* command-line with -depend, just emit the dependencies. The grammars
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* may depend on each other, but the order doesn't matter. Build tools,
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* reading in this output, will know how to organize it.
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*
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* This is a wee bit slow probably because the code generator has to load
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* all of its template files in order to figure out the file extension
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* for the generated recognizer.
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*
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* This code was obvious until I removed redundant "./" on front of files
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* and had to escape spaces in filenames :(
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*/
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public class BuildDependencyGenerator {
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protected String grammarFileName;
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protected Tool tool;
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protected Grammar grammar;
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protected CodeGenerator generator;
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protected StringTemplateGroup templates;
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public BuildDependencyGenerator(Tool tool, String grammarFileName)
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throws IOException, antlr.TokenStreamException, antlr.RecognitionException
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{
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this.tool = tool;
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this.grammarFileName = grammarFileName;
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grammar = tool.getRootGrammar(grammarFileName);
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String language = (String)grammar.getOption("language");
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generator = new CodeGenerator(tool, grammar, language);
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generator.loadTemplates(language);
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}
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/** From T.g return a list of File objects that
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* name files ANTLR will emit from T.g.
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*/
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public List getGeneratedFileList() {
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List<File> files = new ArrayList<File>();
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File outputDir = tool.getOutputDirectory(grammarFileName);
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if ( outputDir.getName().equals(".") ) {
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outputDir = null;
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}
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else if ( outputDir.getName().indexOf(' ')>=0 ) { // has spaces?
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String escSpaces = Utils.replace(outputDir.toString(),
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" ",
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"\\ ");
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outputDir = new File(escSpaces);
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}
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// add generated recognizer; e.g., TParser.java
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String recognizer =
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generator.getRecognizerFileName(grammar.name, grammar.type);
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files.add(new File(outputDir, recognizer));
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// add output vocab file; e.g., T.tokens
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files.add(new File(outputDir, generator.getVocabFileName()));
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// are we generating a .h file?
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StringTemplate headerExtST = null;
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if ( generator.getTemplates().isDefined("headerFile") ) {
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headerExtST = generator.getTemplates().getInstanceOf("headerFileExtension");
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String suffix = Grammar.grammarTypeToFileNameSuffix[grammar.type];
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String fileName = grammar.name + suffix + headerExtST.toString();
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files.add(new File(outputDir,fileName));
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}
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if ( grammar.type==Grammar.COMBINED ) {
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// add autogenerated lexer; e.g., TLexer.java TLexer.h TLexer.tokens
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// don't add T__.g (just a temp file)
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StringTemplate extST = generator.getTemplates().getInstanceOf("codeFileExtension");
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String suffix = Grammar.grammarTypeToFileNameSuffix[Grammar.LEXER];
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String lexer = grammar.name + suffix + extST.toString();
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files.add(new File(outputDir,lexer));
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// TLexer.h
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if ( headerExtST !=null ) {
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String header = grammar.name+suffix+headerExtST.toString();
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files.add(new File(outputDir,header));
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}
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// for combined, don't generate TLexer.tokens
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}
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// handle generated files for imported grammars
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List<Grammar> imports =
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grammar.composite.getDelegates(grammar.composite.getRootGrammar());
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for (Grammar g : imports) {
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outputDir = tool.getOutputDirectory(g.getFileName());
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String fname = groomQualifiedFileName(outputDir.toString(), g.getRecognizerName());
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files.add(new File(fname));
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}
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if ( files.size()==0 ) {
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return null;
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}
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return files;
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}
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/** Return a list of File objects that name files ANTLR will read
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* to process T.g; for now, this can only be .tokens files and only
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* if they use the tokenVocab option.
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*/
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public List getDependenciesFileList() {
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List files = new ArrayList();
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// handle token vocabulary loads
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String vocabName = (String)grammar.getOption("tokenVocab");
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if ( vocabName != null ) {
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File vocabFile = tool.getImportedVocabFile(vocabName);
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File outputDir = vocabFile.getParentFile();
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String fileName = groomQualifiedFileName(outputDir.getName(), vocabFile.getName());
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files.add(fileName);
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}
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// handle imported grammars
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List<Grammar> imports =
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grammar.composite.getDelegates(grammar.composite.getRootGrammar());
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for (Grammar g : imports) {
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String libdir = tool.getLibraryDirectory();
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String fileName = groomQualifiedFileName(libdir, g.fileName);
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files.add(fileName);
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}
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if ( files.size()==0 ) {
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return null;
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}
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return files;
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}
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public StringTemplate getDependencies() {
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loadDependencyTemplates();
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StringTemplate dependenciesST = templates.getInstanceOf("dependencies");
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dependenciesST.setAttribute("in", getDependenciesFileList());
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dependenciesST.setAttribute("out", getGeneratedFileList());
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dependenciesST.setAttribute("grammarFileName", grammar.fileName);
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return dependenciesST;
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}
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public void loadDependencyTemplates() {
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if ( templates!=null ) {
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return;
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}
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String fileName = "org/antlr/tool/templates/depend.stg";
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ClassLoader cl = Thread.currentThread().getContextClassLoader();
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InputStream is = cl.getResourceAsStream(fileName);
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if ( is==null ) {
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cl = ErrorManager.class.getClassLoader();
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is = cl.getResourceAsStream(fileName);
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}
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if ( is==null ) {
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ErrorManager.internalError("Can't load dependency templates: "+fileName);
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return;
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}
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BufferedReader br = null;
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try {
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br = new BufferedReader(new InputStreamReader(is));
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templates = new StringTemplateGroup(br,
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AngleBracketTemplateLexer.class);
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br.close();
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}
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catch (IOException ioe) {
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ErrorManager.internalError("error reading dependency templates file "+fileName, ioe);
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}
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finally {
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if ( br!=null ) {
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try {
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br.close();
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}
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catch (IOException ioe) {
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ErrorManager.internalError("cannot close dependency templates file "+fileName, ioe);
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}
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}
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}
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}
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public String groomQualifiedFileName(String outputDir, String fileName) {
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if ( outputDir.equals(".") ) {
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return fileName;
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}
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else if ( outputDir.indexOf(' ')>=0 ) { // has spaces?
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String escSpaces = Utils.replace(outputDir.toString(),
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" ",
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"\\ ");
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return escSpaces+File.separator+fileName;
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}
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else {
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return outputDir+File.separator+fileName;
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}
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}
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}
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