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Groovy example source code file (UnimplementedSyntaxTest.java)

This example Groovy source code file (UnimplementedSyntaxTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

bar, earthseason, exception, exception, foo, foo, groovyshell, groovyshell, groovytestcase, myclass, myclass, script, season, traversaltesthelper

The Groovy UnimplementedSyntaxTest.java source code

/**
 *
 * Copyright 2007 Jeremy Rayner
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 **/
package org.codehaus.groovy.antlr.treewalker;

import groovy.lang.GroovyShell;
import groovy.lang.Script;
import groovy.util.GroovyTestCase;

/**
 * This tests code that is valid in parser, but has issues further down the line.
 *
 * @author <a href="mailto:groovy@ross-rayner.com">Jeremy Rayner
 * @version $Revision: 4653 $
 */
public class UnimplementedSyntaxTest extends GroovyTestCase {
    // ------------------------------
    // feature: Annotation Definition
    // ------------------------------

    public void test_AnnotationDef1_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: ANNOTATION_DEF
        assertNotNull(compile("public @interface Foo{}"));
    }

    public void test_AnnotationDef2_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: ANNOTATION_DEF
        assertNotNull(compile("public @interface Foo{int bar() default 123}"));
    }

    // ------------------------------
    // bug: Qualified Exception Types
    // ------------------------------

    public void test_QualifiedExceptionTypes_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unexpected node type: '.' found when expecting type: an identifier
        assertNotNull(compile("def foo() throws bar.MookyException{}")); // fails after parser
    }

    // ------------------------------
    // feature: classic Java for loop
    // ------------------------------

    public void test_ClassicJavaForLoop1_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // For statement contains unexpected tokens. Possible attempt to use unsupported Java-style for loop.
        // This syntax now replaced with closure list i.e. for (i=0;j=2;i<10;i++;j--) {...
        assertNotNull(compile("for (i = 0,j = 2;i < 10; i++, j--) {print i}")); // fails after parser
    }

    public void test_ClassicJavaForLoop2() throws Exception {
        // For statement contains unexpected tokens. Possible attempt to use unsupported Java-style for loop.
        assertNotNull(compile("for (i=0;i<10;i++) {println i}")); // fails after parser
    }

    // ------------------------------
    // feature: Enum Definitions
    // ------------------------------
    public void test_EnumDef1_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: ENUM_DEF
        assertNotNull(compile("enum Coin {PENNY(1), DIME(10), QUARTER(25)}")); // fails after parser
    }

    public void test_EnumDef2_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: ENUM_DEF
        assertNotNull(compile("enum Season{WINTER,SPRING,SUMMER,AUTUMN}")); // fails after parser
    }

    public void test_EnumDef3_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: ENUM_DEF
        assertNotNull(compile("enum Operation {ADDITION {double eval(x,y) {return x + y}}}")); // fails after parser
    }

    public void test_EnumDef4_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: ENUM_DEF
        assertNotNull(compile("enum EarthSeason implements Season{SPRING}")); // fails after parser
    }

    // ------------------------------------------------
    // deprecate in parser?: 'break' allowed in methods
    // ------------------------------------------------
    public void test_BreakAllowedInMethods_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // the break statement is only allowed inside loops or switches
        assertNotNull(compile("def myMethod(){break}")); // fails after parser
    }

    // ----------------------------------------------------
    // deprecate in parser?: 'continue' allowed in closures
    // ----------------------------------------------------
    public void test_ContinueAllowedInClosures_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // the continue statement is only allowed inside loops
        assertNotNull(compile("[1,2,3].each{continue}")); // fails after parser
    }

    // ----------------------------------------------------
    // feature?: allow break/continue with value from loops?
    // ----------------------------------------------------
    public void test_BreakWithValueAllowedInLoops_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unexpected node type: a numeric literal found when expecting type: an identifier
        assertNotNull(compile("for (i in 1..100) {break 2}")); // fails after parser
    }

    public void test_ContinueWithValueAllowedInLoops_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unexpected node type: a numeric literal found when expecting type: an identifier
        assertNotNull(compile("for (i in 1..100) {continue 2}")); // fails after parser
    }

    // ---------------------------------------------------------------
    // feature?: allow break/continue to labeled statement from loops? (is this even right syntax, or parser bug???)
    // ---------------------------------------------------------------
    public void test_BreakToLabeledStatementAllowedInLoops_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unexpected node type: LABELED_STAT found when expecting type: an identifier
        assertNotNull(compile("for (i in 1..100) {break label1:}")); // fails after parser
    }

    public void test_ContinueToLabeledStatementAllowedInLoops_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unexpected node type: LABELED_STAT found when expecting type: an identifier
        assertNotNull(compile("for (i in 1..100) {continue label1:}")); // fails after parser
    }

    // -----------------------
    // feature: Native Methods
    // -----------------------
    public void test_NativeMethods1_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // You defined a method without body. Try adding a body, or declare it abstract
        assertNotNull(compile("public class R{public native void seek(long pos)}")); // fails after parser
    }

    public void test_NativeMethods2_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // You defined a method without body. Try adding a body, or declare it abstract
        assertNotNull(compile("native foo()")); // fails after parser
    }

    // ---------------------
    // feature: 'threadsafe'
    // ---------------------
    public void test_Threadsafe1_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: "threadsafe"
        assertNotNull(compile("threadsafe foo() {}")); // fails after parser
    }

    public void test_Threadsafe2_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unknown type: "threadsafe"
        assertNotNull(compile("public static transient final native threadsafe synchronized volatile strictfp foo() {}")); // fails after parser
    }

    // --------------------------------------------------
    // bugs?: spread expressions in closures and GStrings
    // --------------------------------------------------
    public void test_SpreadExpressionInClosure_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // BUG! exception in phase 'class generation' in source unit 'Script1.groovy'
        // SpreadExpression should not be visited here
        assertNotNull(compile("myList{*name}")); // fails after parser
    }

    public void test_SpreadExpressionInGString1_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // BUG! exception in phase 'conversion' in source unit 'Script1.groovy' null
        assertNotNull(compile("\"foo$*bar\"")); // fails after parser
    }

    public void test_SpreadExpressionInGString2_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // BUG! exception in phase 'class generation' in source unit 'Script1.groovy'
        // SpreadExpression should not be visited here
        assertNotNull(compile("\"foo${*bar}\"")); // fails after parser
    }

    // -----------------------
    // feature: static imports
    // -----------------------
    // TODO: move somewhere else
    public void test_StaticImport1() throws Exception {
        //GROOVY-3711: The following call now results in a valid script class node, so foo.Bar needs to get resolved.
        GroovyShell groovyShell = new GroovyShell();
        compile("package foo; class Bar{}", groovyShell);
        assertNotNull(compile("import static foo.Bar.mooky", groovyShell));
    }

    public void test_StaticImport2() throws Exception {
        //GROOVY-3711: The following call now results in a valid script class node, so foo.Bar needs to get resolved.
        GroovyShell groovyShell = new GroovyShell();
        compile("package foo; class Bar{}", groovyShell);
        assertNotNull(compile("import static foo.Bar.*", groovyShell));
    }

    // TODO: move somewhere else GROOVY-1874
    public void test_staticBlockWithNewLines() throws Exception {
        assertNotNull(compile("class MyClass \n{\n\tstatic\n{\nprintln 2\n}\n}"));
    }
    
    public void test_staticBlockWithNoStartNewLines() throws Exception {
        assertNotNull(compile("class MyClass \n{\n\tstatic {\nprintln 2\n}\n}"));
    }
    
    public void test_staticBlockWithNoNewLines() throws Exception {
        assertNotNull(compile("class MyClass \n{\n\tstatic { println 2 }}"));
    }
    
    // ------------------------
    // feature: type parameters
    // ------------------------
    public void test_TypeParameters_FAILS() throws Exception {
        if (notYetImplemented()) return;
        // Unexpected node type: TYPE_PARAMETERS found when expecting type: OBJBLOCK
        assertNotNull(compile("class Foo<T extends C & I> {T t}")); // fails after parser
    }

    private Script compile(String input) throws Exception {
        return compile(input, new GroovyShell());
    }

    private Script compile(String input, GroovyShell groovyShell) throws Exception {
        TraversalTestHelper traverser = new TraversalTestHelper();
        traverser.traverse(input, SourcePrinter.class, Boolean.FALSE);
        return groovyShell.parse(input);
    }

}

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