Examples with PreOrderTraversal org.codehaus.groovy.antlr.treewalker.PreOrderTraversal used on opensource projects

Example 1 with PreOrderTraversal

use of org.codehaus.groovy.antlr.treewalker.PreOrderTraversal in project groovy by apache.

the class Java2GroovyProcessor method convert.

public static String convert(String filename, String input, boolean withHeader, boolean withNewLines) throws Exception {
    JavaRecognizer parser = getJavaParser(input);
    String[] tokenNames = parser.getTokenNames();
    parser.compilationUnit();
    AST ast = parser.getAST();
    // which is a really nice way of seeing the AST, folding nodes etc
    if ("mindmap".equals(System.getProperty("ANTLR.AST".toLowerCase()))) {
        // uppercase to hide from jarjar
        try {
            PrintStream out = new PrintStream(new FileOutputStream(filename + ".mm"));
            Visitor visitor = new MindMapPrinter(out, tokenNames);
            AntlrASTProcessor treewalker = new PreOrderTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + filename + ".mm");
        }
    }
    // modify the Java AST into a Groovy AST
    modifyJavaASTintoGroovyAST(tokenNames, ast);
    String[] groovyTokenNames = getGroovyTokenNames(input);
    // groovify the fat Java-Like Groovy AST
    groovifyFatJavaLikeGroovyAST(ast, groovyTokenNames);
    // now output
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    Visitor visitor = new SourcePrinter(new PrintStream(baos), groovyTokenNames, withNewLines);
    AntlrASTProcessor traverser = new SourceCodeTraversal(visitor);
    traverser.process(ast);
    String header = "";
    if (withHeader) {
        header = "/*\n" + "  Automatically Converted from Java Source \n" + "  \n" + "  by java2groovy v0.0.1   Copyright Jeremy Rayner 2007\n" + "  \n" + "  !! NOT FIT FOR ANY PURPOSE !! \n" + "  'java2groovy' cannot be used to convert one working program into another" + "  */\n\n";
    }
    return header + new String(baos.toByteArray());
}

Example 2 with PreOrderTraversal

use of org.codehaus.groovy.antlr.treewalker.PreOrderTraversal in project groovy by apache.

the class Java2GroovyProcessor method modifyJavaASTintoGroovyAST.

private static void modifyJavaASTintoGroovyAST(String[] tokenNames, AST ast) {
    // mutate the tree when in Javaland
    Visitor preJava2groovyConverter = new PreJava2GroovyConverter(tokenNames);
    AntlrASTProcessor preJava2groovyTraverser = new PreOrderTraversal(preJava2groovyConverter);
    preJava2groovyTraverser.process(ast);
    // map the nodes to Groovy types
    Visitor java2groovyConverter = new Java2GroovyConverter(tokenNames);
    AntlrASTProcessor java2groovyTraverser = new PreOrderTraversal(java2groovyConverter);
    java2groovyTraverser.process(ast);
}

Example 3 with PreOrderTraversal

use of org.codehaus.groovy.antlr.treewalker.PreOrderTraversal in project groovy by apache.

the class GroovyRootDocBuilder method parseJava.

private Map<String, GroovyClassDoc> parseJava(String packagePath, String file, String src) throws RecognitionException, TokenStreamException {
    SourceBuffer sourceBuffer = new SourceBuffer();
    JavaRecognizer parser = getJavaParser(src, sourceBuffer);
    String[] tokenNames = parser.getTokenNames();
    try {
        parser.compilationUnit();
    } catch (OutOfMemoryError e) {
        log.error("Out of memory while processing: " + packagePath + "/" + file);
        throw e;
    }
    AST ast = parser.getAST();
    // modify the Java AST into a Groovy AST (just token types)
    Visitor java2groovyConverter = new Java2GroovyConverter(tokenNames);
    AntlrASTProcessor java2groovyTraverser = new PreOrderTraversal(java2groovyConverter);
    java2groovyTraverser.process(ast);
    // now mutate (groovify) the ast into groovy
    Visitor groovifier = new Groovifier(tokenNames, false);
    AntlrASTProcessor groovifierTraverser = new PreOrderTraversal(groovifier);
    groovifierTraverser.process(ast);
    // now do the business     
    Visitor visitor = new SimpleGroovyClassDocAssembler(packagePath, file, sourceBuffer, links, properties, false);
    AntlrASTProcessor traverser = new SourceCodeTraversal(visitor);
    traverser.process(ast);
    return ((SimpleGroovyClassDocAssembler) visitor).getGroovyClassDocs();
}

Example 4 with PreOrderTraversal

use of org.codehaus.groovy.antlr.treewalker.PreOrderTraversal in project groovy by apache.

the class AntlrParserPlugin method outputASTInVariousFormsIfNeeded.

private void outputASTInVariousFormsIfNeeded(SourceUnit sourceUnit, SourceBuffer sourceBuffer) {
    // straight xstream output of AST
    // uppercase to hide from jarjar
    String formatProp = System.getProperty("ANTLR.AST".toLowerCase());
    if ("xml".equals(formatProp)) {
        saveAsXML(sourceUnit.getName(), ast);
    }
    // 'pretty printer' output of AST
    if ("groovy".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".pretty.groovy"));
            Visitor visitor = new SourcePrinter(out, tokenNames);
            AntlrASTProcessor treewalker = new SourceCodeTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".pretty.groovy");
        }
    }
    // which is a really nice way of seeing the AST, folding nodes etc
    if ("mindmap".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".mm"));
            Visitor visitor = new MindMapPrinter(out, tokenNames);
            AntlrASTProcessor treewalker = new PreOrderTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".mm");
        }
    }
    // include original line/col info and source code on the mindmap output
    if ("extendedMindmap".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".mm"));
            Visitor visitor = new MindMapPrinter(out, tokenNames, sourceBuffer);
            AntlrASTProcessor treewalker = new PreOrderTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".mm");
        }
    }
    // html output of AST
    if ("html".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".html"));
            List<VisitorAdapter> v = new ArrayList<VisitorAdapter>();
            v.add(new NodeAsHTMLPrinter(out, tokenNames));
            v.add(new SourcePrinter(out, tokenNames));
            Visitor visitors = new CompositeVisitor(v);
            AntlrASTProcessor treewalker = new SourceCodeTraversal(visitors);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".html");
        }
    }
}

Example 5 with PreOrderTraversal

use of org.codehaus.groovy.antlr.treewalker.PreOrderTraversal in project groovy-core by groovy.

the class Java2GroovyProcessor method modifyJavaASTintoGroovyAST.

private static void modifyJavaASTintoGroovyAST(String[] tokenNames, AST ast) {
    // mutate the tree when in Javaland
    Visitor preJava2groovyConverter = new PreJava2GroovyConverter(tokenNames);
    AntlrASTProcessor preJava2groovyTraverser = new PreOrderTraversal(preJava2groovyConverter);
    preJava2groovyTraverser.process(ast);
    // map the nodes to Groovy types
    Visitor java2groovyConverter = new Java2GroovyConverter(tokenNames);
    AntlrASTProcessor java2groovyTraverser = new PreOrderTraversal(java2groovyConverter);
    java2groovyTraverser.process(ast);
}