@Override
public void generate(GeneratorContext context, SourceWriter writer, MethodReference methodRef)
throws IOException {
ClassReader cls = context.getClassSource().get(methodRef.getClassName());
MethodReader method = cls.getMethod(methodRef.getDescriptor());
AnnotationReader providerAnnot = method.getAnnotations().get(MetadataProvider.class.getName());
AnnotationReader refAnnot = method.getAnnotations().get(MetadataProviderRef.class.getName());
methodRef = MethodReference.parse(refAnnot.getValue("value").getString());
// Find and instantiate metadata generator
ValueType generatorType = providerAnnot.getValue("value").getJavaClass();
String generatorClassName = ((ValueType.Object) generatorType).getClassName();
Class<?> generatorClass;
try {
generatorClass = Class.forName(generatorClassName, true, context.getClassLoader());
} catch (ClassNotFoundException e) {
context
.getDiagnostics()
.error(
new CallLocation(methodRef),
"Can't find metadata provider class {{c0}}",
generatorClassName);
return;
}
Constructor<?> cons;
try {
cons = generatorClass.getConstructor();
} catch (NoSuchMethodException e) {
context
.getDiagnostics()
.error(
new CallLocation(methodRef),
"Metadata generator {{c0}} does not have " + "a public no-arg constructor",
generatorClassName);
return;
}
MetadataGenerator generator;
try {
generator = (MetadataGenerator) cons.newInstance();
} catch (IllegalAccessException | InstantiationException | InvocationTargetException e) {
context
.getDiagnostics()
.error(
new CallLocation(methodRef),
"Error instantiating metadata " + "generator {{c0}}",
generatorClassName);
return;
}
DefaultMetadataGeneratorContext metadataContext =
new DefaultMetadataGeneratorContext(
context.getClassSource(), context.getClassLoader(), context.getProperties(), context);
// Generate resource loader
Resource resource = generator.generateMetadata(metadataContext, methodRef);
writer.append("return ");
ResourceWriterHelper.write(writer, resource);
writer.append(';').softNewLine();
}
private void castAndSetProperty(
InvokeInstruction insn, String property, List<Instruction> instructions, Class<?> primitive) {
Variable castVar = program.createVariable();
InvokeInstruction castInvoke = new InvokeInstruction();
castInvoke.setType(InvocationType.SPECIAL);
String primitiveCapitalized = primitive.getName();
primitiveCapitalized =
Character.toUpperCase(primitiveCapitalized.charAt(0)) + primitiveCapitalized.substring(1);
castInvoke.setMethod(
new MethodReference(
ResourceAccessor.class, "castFrom" + primitiveCapitalized, primitive, Object.class));
castInvoke.getArguments().add(insn.getArguments().get(0));
castInvoke.setReceiver(castVar);
instructions.add(castInvoke);
setProperty(insn, property, instructions, castVar);
}
