I think you should remove "src.println("public void test(){}")" line. If src is null then this line my cause nullPointerException you see.
On Tue, Nov 11, 2014 at 4:05 PM, Łukasz Bączek <baczeklu@poczta.fm> wrote:
I modified the code again:
public class rttiGenerator extends Generator {
@Override
public String generate(TreeLogger logger, GeneratorContext context, String typeName) throws UnableToCompleteException {
JClassType classType;
String r = null;
try {
classType = context.getTypeOracle().getType(typeName);
SourceWriter src = getSourceWriter(classType, context, logger);
src.println("public void test(){}");
if (src != null) {
src.commit(logger);
r = typeName + "Generated";
} else {
r = typeName;
}
} catch (NotFoundException e) {
e.printStackTrace();
}
return r;
}
public SourceWriter getSourceWriter(JClassType classType,
GeneratorContext context, TreeLogger logger) {
String packageName = classType.getPackage().getName();
String simpleName = classType.getSimpleSourceName() + "Generated";
ClassSourceFileComposerFactory composer = new ClassSourceFileComposerFactory(
packageName, simpleName);
composer.addImport("com.google.gwt.user.client.ui.Button");
composer.setSuperclass("Button");
PrintWriter printWriter = context.tryCreate(logger, packageName,
simpleName);
if (printWriter == null) {
return null;
} else {
SourceWriter sw = composer.createSourceWriter(context, printWriter);
return sw;
}
}
}
public void onModuleLoad() {
IsWidget rtti = GWT.create(Button.class);
}
but it is still an Error:
GWT Compiling client-side code.
Compiling module org.yournamehere.Main
Computing all possible rebind results for 'com.google.gwt.user.client.ui.Button'
Rebinding com.google.gwt.user.client.ui.Button
Invoking generator pl.cba.lukaszbaczek.rttiClassGWT.rttiGenerator
[ERROR] Generator 'pl.cba.lukaszbaczek.rttiClassGWT.rttiGenerator' threw an exception while rebinding 'com.google.gwt.user.client.ui.Button'
java.lang.NullPointerException
at pl.cba.lukaszbaczek.rttiClassGWT.rttiGenerator.generate(rttiGenerator.java:31)
at com.google.gwt.core.ext.IncrementalGenerator.generateNonIncrementally(IncrementalGenerator.java:40)BUILD FAILED (total time: 16 seconds)at com.google.gwt.dev.javac.StandardGeneratorContext.runGeneratorIncrementally(StandardGeneratorContext.java:676)
at com.google.gwt.dev.cfg.RuleGenerateWith.realize(RuleGenerateWith.java:41)
at com.google.gwt.dev.shell.StandardRebindOracle$Rebinder.rebind(StandardRebindOracle.java:79)
at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:276)
at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:265)
at com.google.gwt.dev.DistillerRebindPermutationOracle.getAllPossibleRebindAnswers(DistillerRebindPermutationOracle.java:91)
at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor.handleGwtCreate(UnifyAst.java:387)
at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor.handleMagicMethodCall(UnifyAst.java:465)
at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor.endVisit(UnifyAst.java:255)
at com.google.gwt.dev.jjs.ast.JMethodCall.traverse(JMethodCall.java:244)
at com.google.gwt.dev.jjs.ast.JModVisitor.traverse(JModVisitor.java:361)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:273)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:265)
at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java:117)
at com.google.gwt.dev.jjs.ast.JCastOperation.traverse(JCastOperation.java:65)
at com.google.gwt.dev.jjs.ast.JModVisitor.traverse(JModVisitor.java:361)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:273)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:265)
at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java:117)
at com.google.gwt.dev.jjs.ast.JDeclarationStatement.traverse(JDeclarationStatement.java:48)
at com.google.gwt.dev.jjs.ast.JModVisitor$ListContextImmutable.traverse(JModVisitor.java:170)
at com.google.gwt.dev.jjs.ast.JModVisitor.acceptWithInsertRemoveImmutable(JModVisitor.java:336)
at com.google.gwt.dev.jjs.ast.JBlock.traverse(JBlock.java:83)
at com.google.gwt.dev.jjs.ast.JModVisitor.traverse(JModVisitor.java:361)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:273)
at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java:138)
at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java:134)
at com.google.gwt.dev.jjs.ast.JMethodBody.traverse(JMethodBody.java:82)
at com.google.gwt.dev.jjs.ast.JModVisitor.traverse(JModVisitor.java:361)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:273)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:265)
at com.google.gwt.dev.jjs.ast.JMethod.visitChildren(JMethod.java:449)
at com.google.gwt.dev.jjs.ast.JMethod.traverse(JMethod.java:418)
at com.google.gwt.dev.jjs.ast.JModVisitor.traverse(JModVisitor.java:361)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:273)
at com.google.gwt.dev.jjs.ast.JModVisitor.accept(JModVisitor.java:265)
at com.google.gwt.dev.jjs.impl.UnifyAst.mainLoop(UnifyAst.java:940)
at com.google.gwt.dev.jjs.impl.UnifyAst.exec(UnifyAst.java:665)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile(JavaToJavaScriptCompiler.java:672)
at com.google.gwt.dev.jjs.JavaScriptCompiler.precompile(JavaScriptCompiler.java:34)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:271)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:223)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:139)
at com.google.gwt.dev.Compiler.run(Compiler.java:167)
at com.google.gwt.dev.Compiler.run(Compiler.java:132)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:99)
at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
at com.google.gwt.dev.Compiler.main(Compiler.java:106)
[ERROR] Errors in 'org/yournamehere/client/MainEntryPoint.java'
[ERROR] Line 32: Failed to resolve 'com.google.gwt.user.client.ui.Button' via deferred binding
C:\Users\Łukasz\Documents\NetBeansProjects\xxx\nbproject\build-gwt.xml:331: The following error occurred while executing this line:
C:\Users\Łukasz\Documents\NetBeansProjects\xxx\nbproject\build-gwt.xml:480: Java returned: 1
W dniu 11.11.2014 o 13:36, Jens pisze:
--I modified the code
You still have the same problem if getSourceWriter() returns null.
-- J.
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