@Nullable
public static SMAPAndMethodNode getMethodNode(
byte[] classData, final String methodName, final String methodDescriptor, ClassId classId)
throws ClassNotFoundException, IOException {
ClassReader cr = new ClassReader(classData);
final MethodNode[] node = new MethodNode[1];
final String[] debugInfo = new String[2];
final int[] lines = new int[2];
lines[0] = Integer.MAX_VALUE;
lines[1] = Integer.MIN_VALUE;
cr.accept(
new ClassVisitor(API) {
@Override
public void visitSource(String source, String debug) {
super.visitSource(source, debug);
debugInfo[0] = source;
debugInfo[1] = debug;
}
@Override
public MethodVisitor visitMethod(
int access,
@NotNull String name,
@NotNull String desc,
String signature,
String[] exceptions) {
if (methodName.equals(name) && methodDescriptor.equals(desc)) {
node[0] =
new MethodNode(API, access, name, desc, signature, exceptions) {
@Override
public void visitLineNumber(int line, @NotNull Label start) {
super.visitLineNumber(line, start);
lines[0] = Math.min(lines[0], line);
lines[1] = Math.max(lines[1], line);
}
};
return node[0];
}
return null;
}
},
ClassReader.SKIP_FRAMES | (GENERATE_SMAP ? 0 : ClassReader.SKIP_DEBUG));
SMAP smap =
SMAPParser.parseOrCreateDefault(
debugInfo[1], debugInfo[0], classId.toString(), lines[0], lines[1]);
return new SMAPAndMethodNode(node[0], smap);
}
@NotNull
public InlineResult doTransform(
@NotNull AnonymousObjectGeneration anonymousObjectGen,
@NotNull FieldRemapper parentRemapper) {
final List<InnerClassNode> innerClassNodes = new ArrayList<InnerClassNode>();
ClassBuilder classBuilder = createClassBuilder();
final List<MethodNode> methodsToTransform = new ArrayList<MethodNode>();
reader.accept(
new ClassVisitor(InlineCodegenUtil.API, classBuilder.getVisitor()) {
@Override
public void visit(
int version,
int access,
@NotNull String name,
String signature,
String superName,
String[] interfaces) {
InlineCodegenUtil.assertVersionNotGreaterThanJava6(version, name);
super.visit(version, access, name, signature, superName, interfaces);
}
@Override
public void visitInnerClass(
@NotNull String name, String outerName, String innerName, int access) {
innerClassNodes.add(new InnerClassNode(name, outerName, innerName, access));
}
@Override
public MethodVisitor visitMethod(
int access,
@NotNull String name,
@NotNull String desc,
String signature,
String[] exceptions) {
MethodNode node = new MethodNode(access, name, desc, signature, exceptions);
if (name.equals("<init>")) {
if (constructor != null)
throw new RuntimeException(
"Lambda, SAM or anonymous object should have only one constructor");
constructor = node;
} else {
methodsToTransform.add(node);
}
return node;
}
@Override
public FieldVisitor visitField(
int access,
@NotNull String name,
@NotNull String desc,
String signature,
Object value) {
addUniqueField(name);
if (InlineCodegenUtil.isCapturedFieldName(name)) {
return null;
} else {
return super.visitField(access, name, desc, signature, value);
}
}
@Override
public void visitSource(String source, String debug) {
sourceInfo = source;
debugInfo = debug;
}
@Override
public void visitEnd() {}
},
ClassReader.SKIP_FRAMES);
if (!inliningContext.isInliningLambda) {
if (debugInfo != null && !debugInfo.isEmpty()) {
sourceMapper = SourceMapper.Companion.createFromSmap(SMAPParser.parse(debugInfo));
} else {
// seems we can't do any clever mapping cause we don't know any about original class name
sourceMapper = IdenticalSourceMapper.INSTANCE;
}
if (sourceInfo != null && !InlineCodegenUtil.GENERATE_SMAP) {
classBuilder.visitSource(sourceInfo, debugInfo);
}
} else {
if (sourceInfo != null) {
classBuilder.visitSource(sourceInfo, debugInfo);
}
sourceMapper = IdenticalSourceMapper.INSTANCE;
}
ParametersBuilder allCapturedParamBuilder = ParametersBuilder.newBuilder();
ParametersBuilder constructorParamBuilder = ParametersBuilder.newBuilder();
List<CapturedParamInfo> additionalFakeParams =
extractParametersMappingAndPatchConstructor(
constructor,
allCapturedParamBuilder,
constructorParamBuilder,
anonymousObjectGen,
parentRemapper);
List<MethodVisitor> deferringMethods = new ArrayList<MethodVisitor>();
for (MethodNode next : methodsToTransform) {
MethodVisitor deferringVisitor = newMethod(classBuilder, next);
InlineResult funResult =
inlineMethodAndUpdateGlobalResult(
anonymousObjectGen,
parentRemapper,
deferringVisitor,
next,
allCapturedParamBuilder,
false);
Type returnType = Type.getReturnType(next.desc);
if (!AsmUtil.isPrimitive(returnType)) {
String oldFunReturnType = returnType.getInternalName();
String newFunReturnType = funResult.getChangedTypes().get(oldFunReturnType);
if (newFunReturnType != null) {
inliningContext.typeRemapper.addAdditionalMappings(oldFunReturnType, newFunReturnType);
}
}
deferringMethods.add(deferringVisitor);
}
for (MethodVisitor method : deferringMethods) {
method.visitEnd();
}
generateConstructorAndFields(
classBuilder,
allCapturedParamBuilder,
constructorParamBuilder,
anonymousObjectGen,
parentRemapper,
additionalFakeParams);
SourceMapper.Companion.flushToClassBuilder(sourceMapper, classBuilder);
ClassVisitor visitor = classBuilder.getVisitor();
for (InnerClassNode node : innerClassNodes) {
visitor.visitInnerClass(node.name, node.outerName, node.innerName, node.access);
}
writeOuterInfo(visitor);
classBuilder.done();
anonymousObjectGen.setNewLambdaType(newLambdaType);
return transformationResult;
}