Examples with GroovyLexer org.codehaus.groovy.antlr.parser.GroovyLexer used on opensource projects

Example 16 with GroovyLexer

use of org.codehaus.groovy.antlr.parser.GroovyLexer in project groovy by apache.

the class Java2GroovyProcessor method getGroovyTokenNames.

private static String[] getGroovyTokenNames(String input) {
    GroovyRecognizer groovyParser = null;
    SourceBuffer groovySourceBuffer = new SourceBuffer();
    UnicodeEscapingReader groovyUnicodeReader = new UnicodeEscapingReader(new StringReader(input), groovySourceBuffer);
    GroovyLexer groovyLexer = new GroovyLexer(groovyUnicodeReader);
    groovyUnicodeReader.setLexer(groovyLexer);
    groovyParser = GroovyRecognizer.make(groovyLexer);
    return groovyParser.getTokenNames();
}

Example 17 with GroovyLexer

use of org.codehaus.groovy.antlr.parser.GroovyLexer in project groovy by apache.

the class CompositeVisitorTest method assertCompositeTransparency.

private void assertCompositeTransparency(String input) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GroovyRecognizer parser;
    SourceBuffer sourceBuffer = new SourceBuffer();
    UnicodeEscapingReader unicodeReader = new UnicodeEscapingReader(new StringReader(input), sourceBuffer);
    GroovyLexer lexer = new GroovyLexer(unicodeReader);
    unicodeReader.setLexer(lexer);
    parser = GroovyRecognizer.make(lexer);
    parser.setSourceBuffer(sourceBuffer);
    String[] tokenNames = parser.getTokenNames();
    parser.compilationUnit();
    AST ast = parser.getAST();
    // determine direct result
    Visitor directVisitor = new SourcePrinter(new PrintStream(baos), tokenNames, false);
    AntlrASTProcessor traverser = new SourceCodeTraversal(directVisitor);
    traverser.process(ast);
    String directResult = new String(baos.toByteArray());
    // determine composite result
    baos.reset();
    List wrappedVisitors = new ArrayList();
    wrappedVisitors.add(directVisitor);
    Visitor compositeVisitor = new CompositeVisitor(wrappedVisitors);
    traverser = new SourceCodeTraversal(compositeVisitor);
    traverser.process(ast);
    String compositeResult = new String(baos.toByteArray());
    assertEquals(directResult, compositeResult);
}

Example 18 with GroovyLexer

use of org.codehaus.groovy.antlr.parser.GroovyLexer in project groovy by apache.

the class TraversalTestHelper method traverse.

// todo - the visitor doesn't always take PrintStreams as constructor params!  Could be a more reusable implementation than this...
public String traverse(String input, Class visitorClass, Boolean extraParam) throws Exception {
    if (!Visitor.class.isAssignableFrom(visitorClass)) {
        throw new RuntimeException("Invalid class for traversal: " + visitorClass.getName());
    }
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GroovyRecognizer parser;
    SourceBuffer sourceBuffer = new SourceBuffer();
    UnicodeEscapingReader unicodeReader = new UnicodeEscapingReader(new StringReader(input), sourceBuffer);
    GroovyLexer lexer = new GroovyLexer(unicodeReader);
    unicodeReader.setLexer(lexer);
    parser = GroovyRecognizer.make(lexer);
    parser.setSourceBuffer(sourceBuffer);
    String[] tokenNames = parser.getTokenNames();
    parser.compilationUnit();
    AST ast = parser.getAST();
    Class[] paramTypes;
    Object[] params;
    if (extraParam == null) {
        paramTypes = new Class[] { PrintStream.class, String[].class };
        params = new Object[] { new PrintStream(baos), tokenNames };
    } else {
        paramTypes = new Class[] { PrintStream.class, String[].class, Boolean.TYPE };
        params = new Object[] { new PrintStream(baos), tokenNames, extraParam };
    }
    Constructor constructor = visitorClass.getConstructor(paramTypes);
    Visitor visitor = (Visitor) constructor.newInstance(params);
    AntlrASTProcessor traverser = new SourceCodeTraversal(visitor);
    traverser.process(ast);
    return new String(baos.toByteArray());
}