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Example 1 with AntlrParserPlugin

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

the class GenericsUtils method parseClassNodesFromString.

public static ClassNode[] parseClassNodesFromString(final String option, final SourceUnit sourceUnit, final CompilationUnit compilationUnit, final MethodNode mn, final ASTNode usage) {
    GroovyLexer lexer = new GroovyLexer(new StringReader("DummyNode<" + option + ">"));
    final GroovyRecognizer rn = GroovyRecognizer.make(lexer);
    try {
        rn.classOrInterfaceType(true);
        final AtomicReference<ClassNode> ref = new AtomicReference<ClassNode>();
        AntlrParserPlugin plugin = new AntlrParserPlugin() {

            @Override
            public ModuleNode buildAST(final SourceUnit sourceUnit, final ClassLoader classLoader, final Reduction cst) throws ParserException {
                ref.set(makeTypeWithArguments(rn.getAST()));
                return null;
            }
        };
        plugin.buildAST(null, null, null);
        ClassNode parsedNode = ref.get();
        // the returned node is DummyNode<Param1, Param2, Param3, ...)
        GenericsType[] parsedNodeGenericsTypes = parsedNode.getGenericsTypes();
        if (parsedNodeGenericsTypes == null) {
            return null;
        }
        ClassNode[] signature = new ClassNode[parsedNodeGenericsTypes.length];
        for (int i = 0; i < parsedNodeGenericsTypes.length; i++) {
            final GenericsType genericsType = parsedNodeGenericsTypes[i];
            signature[i] = resolveClassNode(sourceUnit, compilationUnit, mn, usage, genericsType.getType());
        }
        return signature;
    } catch (RecognitionException e) {
        sourceUnit.addError(new IncorrectTypeHintException(mn, e, usage.getLineNumber(), usage.getColumnNumber()));
    } catch (TokenStreamException e) {
        sourceUnit.addError(new IncorrectTypeHintException(mn, e, usage.getLineNumber(), usage.getColumnNumber()));
    } catch (ParserException e) {
        sourceUnit.addError(new IncorrectTypeHintException(mn, e, usage.getLineNumber(), usage.getColumnNumber()));
    }
    return null;
}
Also used : ClassNode(org.codehaus.groovy.ast.ClassNode) ParserException(org.codehaus.groovy.syntax.ParserException) IncorrectTypeHintException(groovy.transform.stc.IncorrectTypeHintException) AtomicReference(java.util.concurrent.atomic.AtomicReference) SourceUnit(org.codehaus.groovy.control.SourceUnit) TokenStreamException(antlr.TokenStreamException) Reduction(org.codehaus.groovy.syntax.Reduction) AntlrParserPlugin(org.codehaus.groovy.antlr.AntlrParserPlugin) GroovyLexer(org.codehaus.groovy.antlr.parser.GroovyLexer) StringReader(java.io.StringReader) GenericsType(org.codehaus.groovy.ast.GenericsType) GroovyRecognizer(org.codehaus.groovy.antlr.parser.GroovyRecognizer) RecognitionException(antlr.RecognitionException)

Aggregations

RecognitionException (antlr.RecognitionException)1 TokenStreamException (antlr.TokenStreamException)1 IncorrectTypeHintException (groovy.transform.stc.IncorrectTypeHintException)1 StringReader (java.io.StringReader)1 AtomicReference (java.util.concurrent.atomic.AtomicReference)1 AntlrParserPlugin (org.codehaus.groovy.antlr.AntlrParserPlugin)1 GroovyLexer (org.codehaus.groovy.antlr.parser.GroovyLexer)1 GroovyRecognizer (org.codehaus.groovy.antlr.parser.GroovyRecognizer)1 ClassNode (org.codehaus.groovy.ast.ClassNode)1 GenericsType (org.codehaus.groovy.ast.GenericsType)1 SourceUnit (org.codehaus.groovy.control.SourceUnit)1 ParserException (org.codehaus.groovy.syntax.ParserException)1 Reduction (org.codehaus.groovy.syntax.Reduction)1