@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();
}
public void addEntryPoint(MethodReference methodRef, String... argumentTypes) {
ValueType[] parameters = methodRef.getDescriptor().getParameterTypes();
if (parameters.length + 1 != argumentTypes.length) {
throw new IllegalArgumentException(
"argumentTypes length does not match the number of method's arguments");
}
MethodDependency method = linkMethod(methodRef, null);
method.use();
DependencyNode[] varNodes = method.getVariables();
varNodes[0].propagate(getType(methodRef.getClassName()));
for (int i = 0; i < argumentTypes.length; ++i) {
varNodes[i + 1].propagate(getType(argumentTypes[i]));
}
}
public void submitMethod(MethodReference methodRef, Program program) {
if (!completing) {
ClassHolder cls = classSource.get(methodRef.getClassName());
if (cls == null) {
throw new IllegalArgumentException("Class not found: " + methodRef.getClassName());
}
if (cls.getMethod(methodRef.getDescriptor()) != null) {
throw new IllegalArgumentException("Method already exists: " + methodRef.getClassName());
}
MethodHolder method = new MethodHolder(methodRef.getDescriptor());
method.getModifiers().add(ElementModifier.STATIC);
method.setProgram(ProgramUtils.copy(program));
new UnreachableBasicBlockEliminator().optimize(program);
cls.addMethod(method);
} else {
MethodDependency dep = getMethod(methodRef);
if (dep == null) {
throw new IllegalArgumentException("Method was not reached: " + methodRef);
}
MethodHolder method = dep.method;
if (!method.hasModifier(ElementModifier.NATIVE)) {
throw new IllegalArgumentException("Method is not native: " + methodRef);
}
if (!dep.used) {
return;
}
method.getModifiers().remove(ElementModifier.NATIVE);
method.setProgram(ProgramUtils.copy(program));
new UnreachableBasicBlockEliminator().optimize(method.getProgram());
dep.used = false;
lock(dep, false);
tasks.add(
() -> {
DependencyGraphBuilder graphBuilder =
new DependencyGraphBuilder(DependencyChecker.this);
graphBuilder.buildGraph(dep);
dep.used = true;
});
processQueue();
}
}
@Override
public void generate(GeneratorContext context, SourceWriter writer, MethodReference methodRef)
throws IOException {
switch (methodRef.getName()) {
case "toJavaScript":
generateToJavaScript(context, writer);
break;
case "fromJavaScript":
generateFromJavaScript(context, writer);
break;
}
}
@Override
public void generate(GeneratorContext context, SourceWriter writer, MethodReference methodRef)
throws IOException {
if (methodRef.getClassName().endsWith("_stderr")) {
if (methodRef.getName().equals("write")) {
writer
.append("$rt_putStderr(")
.append(context.getParameterName(1))
.append(");")
.softNewLine();
}
} else if (methodRef.getClassName().endsWith("_stdout")) {
if (methodRef.getName().equals("write")) {
writer
.append("$rt_putStdout(")
.append(context.getParameterName(1))
.append(");")
.softNewLine();
}
}
}
private MethodDependency createMethodDep(MethodReference methodRef, MethodHolder method) {
ValueType[] arguments = methodRef.getParameterTypes();
int paramCount = arguments.length + 1;
DependencyNode[] parameterNodes = new DependencyNode[arguments.length + 1];
for (int i = 0; i < parameterNodes.length; ++i) {
parameterNodes[i] = createNode();
parameterNodes[i].method = methodRef;
if (shouldLog) {
parameterNodes[i].setTag(methodRef + ":" + i);
}
}
DependencyNode resultNode;
if (methodRef.getDescriptor().getResultType() == ValueType.VOID) {
resultNode = null;
} else {
resultNode = createNode();
resultNode.method = methodRef;
if (shouldLog) {
resultNode.setTag(methodRef + ":RESULT");
}
}
DependencyNode thrown = createNode();
thrown.method = methodRef;
if (shouldLog) {
thrown.setTag(methodRef + ":THROWN");
}
MethodDependency dep =
new MethodDependency(
this, parameterNodes, paramCount, resultNode, thrown, method, methodRef);
if (method != null) {
tasks.add(
() -> {
CallLocation caller = new CallLocation(dep.getMethod().getReference());
linkClass(dep.getMethod().getOwnerName(), caller).initClass(caller);
});
}
return dep;
}
private List<Instruction> transformInvoke(InvokeInstruction insn) {
if (insn.getType() != InvocationType.VIRTUAL) {
return null;
}
MethodReference method = insn.getMethod();
if (method.getClassName().equals(ResourceArray.class.getName())
|| method.getClassName().equals(ResourceMap.class.getName())) {
if (method.getName().equals("keys")) {
return transformKeys(insn);
}
InvokeInstruction accessInsn = new InvokeInstruction();
accessInsn.setType(InvocationType.SPECIAL);
ValueType[] types = new ValueType[method.getDescriptor().parameterCount() + 2];
types[0] = ValueType.object("java.lang.Object");
System.arraycopy(
method.getDescriptor().getSignature(),
0,
types,
1,
method.getDescriptor().parameterCount() + 1);
accessInsn.setMethod(
new MethodReference(ResourceAccessor.class.getName(), method.getName(), types));
accessInsn.getArguments().add(insn.getInstance());
accessInsn.getArguments().addAll(insn.getArguments());
accessInsn.setReceiver(insn.getReceiver());
return Arrays.asList(accessInsn);
}
ClassReader iface = innerSource.get(method.getClassName());
if (iface == null
|| !innerSource.isSuperType(Resource.class.getName(), iface.getName()).orElse(false)) {
return null;
}
if (method.getName().startsWith("get")) {
if (method.getName().length() > 3) {
return transformGetterInvocation(insn, getPropertyName(method.getName().substring(3)));
}
} else if (method.getName().startsWith("is")) {
if (method.getName().length() > 2) {
return transformGetterInvocation(insn, getPropertyName(method.getName().substring(2)));
}
} else if (method.getName().startsWith("set")) {
if (method.getName().length() > 3) {
return transformSetterInvocation(insn, getPropertyName(method.getName().substring(3)));
}
}
return null;
}