openrs2
/
fernflower
1
0
Fork 0
Code Issues 9 Pull Requests Releases Activity

java-decompiler: more lambdas

Browse Source
master
Roman Shevchenko 10 years ago
parent 2ea3feb527
commit c082dfba98
2 changed files with 16 additions and 55 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 35
      src/org/jetbrains/java/decompiler/main/rels/LambdaProcessor.java
  2. 36
      src/org/jetbrains/java/decompiler/modules/decompiler/exps/InvocationExprent.java

35
src/org/jetbrains/java/decompiler/main/rels/LambdaProcessor.java
Unescape View File

@ -1,5 +1,5 @@
/* /*
* Copyright 2000-2014 JetBrains s.r.o. * Copyright 2000-2015 JetBrains s.r.o.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -35,29 +35,23 @@ import java.io.IOException;
import java.util.*; import java.util.*;
public class LambdaProcessor { public class LambdaProcessor {
@SuppressWarnings("SpellCheckingInspection") private static final String JAVAC_LAMBDA_CLASS = "java/lang/invoke/LambdaMetafactory";
private static final String JAVAC_LAMBDA_CLASS = "java/lang/invoke/LambdaMetafactory"; @SuppressWarnings("SpellCheckingInspection") private static final String JAVAC_LAMBDA_METHOD = "metafactory";
private static final String JAVAC_LAMBDA_METHOD = "metafactory"; @SuppressWarnings("SpellCheckingInspection") private static final String JAVAC_LAMBDA_ALT_METHOD = "altMetafactory";
private static final String JAVAC_LAMBDA_METHOD_DESCRIPTOR =
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;";
public void processClass(ClassNode node) throws IOException { public void processClass(ClassNode node) throws IOException {
for (ClassNode child : node.nested) { for (ClassNode child : node.nested) {
processClass(child); processClass(child);
} }
if (node.nested.isEmpty()) { hasLambda(node);
hasLambda(node);
}
} }
public boolean hasLambda(ClassNode node) throws IOException { public boolean hasLambda(ClassNode node) throws IOException {
ClassesProcessor clProcessor = DecompilerContext.getClassProcessor();
ClassesProcessor clprocessor = DecompilerContext.getClassProcessor();
StructClass cl = node.classStruct; StructClass cl = node.classStruct;
if (cl.getBytecodeVersion() < CodeConstants.BYTECODE_JAVA_8) { // lamda beginning with Java 8 if (cl.getBytecodeVersion() < CodeConstants.BYTECODE_JAVA_8) { // lambda beginning with Java 8
return false; return false;
} }
@ -67,17 +61,16 @@ public class LambdaProcessor {
return false; // no bootstrap constants in pool return false; // no bootstrap constants in pool
} }
Set<Integer> lambda_methods = new HashSet<Integer>(); BitSet lambda_methods = new BitSet();
// find lambda bootstrap constants // find lambda bootstrap constants
for (int i = 0; i < bootstrap.getMethodsNumber(); ++i) { for (int i = 0; i < bootstrap.getMethodsNumber(); ++i) {
LinkConstant method_ref = bootstrap.getMethodReference(i); // method handle LinkConstant method_ref = bootstrap.getMethodReference(i); // method handle
// FIXME: extend for Eclipse etc. at some point
if (JAVAC_LAMBDA_CLASS.equals(method_ref.classname) && if (JAVAC_LAMBDA_CLASS.equals(method_ref.classname) &&
JAVAC_LAMBDA_METHOD.equals(method_ref.elementname) && (JAVAC_LAMBDA_METHOD.equals(method_ref.elementname) || JAVAC_LAMBDA_ALT_METHOD.equals(method_ref.elementname))) {
JAVAC_LAMBDA_METHOD_DESCRIPTOR lambda_methods.set(i);
.equals(method_ref.descriptor)) { // check for javac lambda structure. FIXME: extend for Eclipse etc. at some point
lambda_methods.add(i);
} }
} }
@ -101,7 +94,7 @@ public class LambdaProcessor {
if (instr.opcode == CodeConstants.opc_invokedynamic) { if (instr.opcode == CodeConstants.opc_invokedynamic) {
LinkConstant invoke_dynamic = cl.getPool().getLinkConstant(instr.getOperand(0)); LinkConstant invoke_dynamic = cl.getPool().getLinkConstant(instr.getOperand(0));
if (lambda_methods.contains(invoke_dynamic.index1)) { // lambda invocation found if (lambda_methods.get(invoke_dynamic.index1)) { // lambda invocation found
List<PooledConstant> bootstrap_arguments = bootstrap.getMethodArguments(invoke_dynamic.index1); List<PooledConstant> bootstrap_arguments = bootstrap.getMethodArguments(invoke_dynamic.index1);
MethodDescriptor md = MethodDescriptor.parseDescriptor(invoke_dynamic.descriptor); MethodDescriptor md = MethodDescriptor.parseDescriptor(invoke_dynamic.descriptor);
@ -121,7 +114,7 @@ public class LambdaProcessor {
node.nested.add(node_lambda); node.nested.add(node_lambda);
node_lambda.parent = node; node_lambda.parent = node;
clprocessor.getMapRootClasses().put(node_lambda.simpleName, node_lambda); clProcessor.getMapRootClasses().put(node_lambda.simpleName, node_lambda);
mapMethodsLambda.put(node_lambda.lambdaInformation.content_method_key, node_lambda.simpleName); mapMethodsLambda.put(node_lambda.lambdaInformation.content_method_key, node_lambda.simpleName);
} }
} }
@ -136,7 +129,7 @@ public class LambdaProcessor {
if (nd.type == ClassNode.CLASS_LAMBDA) { if (nd.type == ClassNode.CLASS_LAMBDA) {
String parent_class_name = mapMethodsLambda.get(nd.enclosingMethod); String parent_class_name = mapMethodsLambda.get(nd.enclosingMethod);
if (parent_class_name != null) { if (parent_class_name != null) {
ClassNode parent_class = clprocessor.getMapRootClasses().get(parent_class_name); ClassNode parent_class = clProcessor.getMapRootClasses().get(parent_class_name);
parent_class.nested.add(nd); parent_class.nested.add(nd);
nd.parent = parent_class; nd.parent = parent_class;

36
src/org/jetbrains/java/decompiler/modules/decompiler/exps/InvocationExprent.java
Unescape View File

@ -87,7 +87,6 @@ public class InvocationExprent extends Exprent {
break; break;
case CodeConstants.opc_invokedynamic: case CodeConstants.opc_invokedynamic:
invocationTyp = INVOKE_DYNAMIC; invocationTyp = INVOKE_DYNAMIC;
classname = "java/lang/Class"; // dummy class name classname = "java/lang/Class"; // dummy class name
invokeDynamicClassSuffix = "##Lambda_" + cn.index1 + "_" + cn.index2; invokeDynamicClassSuffix = "##Lambda_" + cn.index1 + "_" + cn.index2;
} }
@ -139,6 +138,7 @@ public class InvocationExprent extends Exprent {
instance = instance.copy(); instance = instance.copy();
} }
invocationTyp = expr.getInvocationTyp(); invocationTyp = expr.getInvocationTyp();
invokeDynamicClassSuffix = expr.getInvokeDynamicClassSuffix();
stringDescriptor = expr.getStringDescriptor(); stringDescriptor = expr.getStringDescriptor();
descriptor = expr.getDescriptor(); descriptor = expr.getDescriptor();
lstParameters = new ArrayList<Exprent>(expr.getLstParameters()); lstParameters = new ArrayList<Exprent>(expr.getLstParameters());
@ -193,39 +193,7 @@ public class InvocationExprent extends Exprent {
tracer.addMapping(bytecode); tracer.addMapping(bytecode);
/*if (invocationTyp == INVOKE_DYNAMIC) { if (isStatic) {
// ClassNode node = (ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASSNODE);
//
// if(node != null) {
// ClassNode lambda_node = DecompilerContext.getClassprocessor().getMapRootClasses().get(node.classStruct.qualifiedName + invokeDynamicClassSuffix);
// if(lambda_node != null) {
//
// String typename = ExprProcessor.getCastTypeName(lambda_node.anonimousClassType);
//
// StringWriter strwriter = new StringWriter();
// BufferedWriter bufstrwriter = new BufferedWriter(strwriter);
//
// ClassWriter clwriter = new ClassWriter();
//
// try {
// bufstrwriter.write("new " + typename + "() {");
// bufstrwriter.newLine();
//
//
//
// bufstrwriter.flush();
// } catch(IOException ex) {
// throw new RuntimeException(ex);
// }
//
// buf.append(strwriter.toString());
//
// }
// }
}
else*/ if (isStatic) {
ClassNode node = (ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASS_NODE); ClassNode node = (ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASS_NODE);
if (node == null || !classname.equals(node.classStruct.qualifiedName)) { if (node == null || !classname.equals(node.classStruct.qualifiedName)) {
buf.append(DecompilerContext.getImportCollector().getShortName(ExprProcessor.buildJavaClassName(classname))); buf.append(DecompilerContext.getImportCollector().getShortName(ExprProcessor.buildJavaClassName(classname)));

Write Preview
Loading…
Cancel
Save