com.github.rmannibucau.resourcebundle.dev.ResourceBundleTransformer Maven / Gradle / Ivy
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Simple Javaagent to change resource bundle values.
The newest version!
package com.github.rmannibucau.resourcebundle.dev;
import static java.util.Optional.ofNullable;
import static org.objectweb.asm.Opcodes.AASTORE;
import static org.objectweb.asm.Opcodes.ACC_FINAL;
import static org.objectweb.asm.Opcodes.ACC_PRIVATE;
import static org.objectweb.asm.Opcodes.ACC_STATIC;
import static org.objectweb.asm.Opcodes.ACC_SYNTHETIC;
import static org.objectweb.asm.Opcodes.ACONST_NULL;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.ANEWARRAY;
import static org.objectweb.asm.Opcodes.ARETURN;
import static org.objectweb.asm.Opcodes.ASM7;
import static org.objectweb.asm.Opcodes.ASTORE;
import static org.objectweb.asm.Opcodes.BIPUSH;
import static org.objectweb.asm.Opcodes.CHECKCAST;
import static org.objectweb.asm.Opcodes.DUP;
import static org.objectweb.asm.Opcodes.F_APPEND;
import static org.objectweb.asm.Opcodes.F_SAME;
import static org.objectweb.asm.Opcodes.F_SAME1;
import static org.objectweb.asm.Opcodes.GETFIELD;
import static org.objectweb.asm.Opcodes.GETSTATIC;
import static org.objectweb.asm.Opcodes.GOTO;
import static org.objectweb.asm.Opcodes.H_INVOKESPECIAL;
import static org.objectweb.asm.Opcodes.H_INVOKESTATIC;
import static org.objectweb.asm.Opcodes.H_INVOKEVIRTUAL;
import static org.objectweb.asm.Opcodes.ICONST_0;
import static org.objectweb.asm.Opcodes.ICONST_1;
import static org.objectweb.asm.Opcodes.ICONST_2;
import static org.objectweb.asm.Opcodes.ICONST_3;
import static org.objectweb.asm.Opcodes.ICONST_4;
import static org.objectweb.asm.Opcodes.ICONST_5;
import static org.objectweb.asm.Opcodes.IFEQ;
import static org.objectweb.asm.Opcodes.IFNE;
import static org.objectweb.asm.Opcodes.IFNULL;
import static org.objectweb.asm.Opcodes.INTEGER;
import static org.objectweb.asm.Opcodes.INVOKEINTERFACE;
import static org.objectweb.asm.Opcodes.INVOKESPECIAL;
import static org.objectweb.asm.Opcodes.INVOKESTATIC;
import static org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
import static org.objectweb.asm.Opcodes.IRETURN;
import static org.objectweb.asm.Opcodes.POP;
import static org.objectweb.asm.Opcodes.PUTFIELD;
import static org.objectweb.asm.Opcodes.PUTSTATIC;
import static org.objectweb.asm.Opcodes.RETURN;
import static org.objectweb.asm.Opcodes.SIPUSH;
import java.lang.instrument.ClassFileTransformer;
import java.security.ProtectionDomain;
import java.util.Collection;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Type;
class ResourceBundleTransformer implements ClassFileTransformer {
private static final String INTERNAL_PREFIX = "__agent__";
private final String pattern;
private final Collection includes;
private final Collection excludes;
ResourceBundleTransformer(final String pattern, final Collection includes, final Collection excludes) {
this.pattern = ofNullable(pattern).orElse("[$locale] $value");
this.includes = includes;
this.excludes = excludes;
}
@Override
public byte[] transform(final ClassLoader loader, final String className, final Class classBeingRedefined,
final ProtectionDomain protectionDomain, final byte[] classfileBuffer) {
if ("java/util/ResourceBundle".equals(className)) {
return decorate(classfileBuffer);
}
return classfileBuffer;
}
private byte[] decorate(final byte[] classfileBuffer) {
try {
final ClassReader reader = new ClassReader(classfileBuffer);
final ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_FRAMES);
reader.accept(new ResourceBundleClassVisitor(pattern, writer, includes, excludes), ClassReader.SKIP_FRAMES);
Log.info("Transformed ResourceBundle");
return writer.toByteArray();
} catch (final Throwable e) {
e.printStackTrace(); // no logger
return classfileBuffer;
}
}
/**
* {@code
* // original impl just renamed
* private static java.util.ResourceBundle __agent__getBundleImpl(String baseName, Locale locale,
* ClassLoader loader, java.util.ResourceBundle.Control
* control) {
* return null;
* }
*
* // original impl just renamed
* public final Object _agent_getObject(String key) {
* return null;
* }
*
* private static boolean _agent_isIncluded(final String baseName) {
* return baseName == null
* || ((EXCLUDES == null || !_agent_matches(baseName, EXCLUDES)) && (INCLUDES == null || _agent_matches(baseName,
* INCLUDES)));
* }
*
* private static boolean _agent_matches(final String baseName, final Collection prefixes) {
* return baseName != null && prefixes.stream().anyMatch(baseName::startsWith);
* }
*
* private static ResourceBundle getBundleImpl(String baseName, Locale locale,
* ClassLoader loader, java.util.ResourceBundle.Control
* control) {
* ResourceBundle bundle = __agent__getBundleImpl(baseName, locale, loader, control);
* if (bundle != null && baseName != null) {
* bundle._agent_instrumented = _agent_isIncluded(baseName);
* }
* return bundle;
* }
*
* public final Object getObject(String key) {
* final Object value = _agent_getObject(key);
* if (_agent_instrumented) {
* return doFormat(value);
* }
* return value;
* }
*
* private Object doFormat(final Object value) {
* if (String.class.isInstance(value)) {
* return doFormatString(String.class.cast(value));
* }
* if (String[].class.isInstance(value)) {
* return Stream.of(String[].class.cast(value))
* .map(this::doFormatString)
* .toArray(String[]::new);
* }
* return value;
* }
*
* private String doFormatString(final String value) {
* return pattern.replace("$value", value)
* .replace("$locale", ofNullable(getLocale()).map(Locale::toString).filter(it -> !it.isEmpty()).orElse("default"))
* .replace("$lang", ofNullable(getLocale()).map(Locale::getLanguage).filter(it -> !it.isEmpty()
* ).orElse("default"))
* .replace("$base", getBaseBundleName());
* }
* }
*/
private static class ResourceBundleClassVisitor extends ClassVisitor {
private final String pattern;
private final Collection includes;
private final Collection excludes;
private String owner;
private boolean cinitSeen;
private MethodMeta getObjectMeta;
private MethodMeta getBundleImplMeta;
private ResourceBundleClassVisitor(final String pattern, final ClassVisitor visitor, final Collection includes,
final Collection excludes) {
super(ASM7, visitor);
this.pattern = pattern;
this.includes = includes;
this.excludes = excludes;
}
@Override
public void visit(final int version, final int access, final String name, final String signature, final String superName,
final String[] interfaces) {
this.owner = name;
super.visit(version, access, name, signature, superName, interfaces);
}
@Override
public MethodVisitor visitMethod(final int access, final String name, final String descriptor, final String signature,
final String[] exceptions) {
if ("getObject".equals(name)) {
if (this.getObjectMeta != null) {
throw new IllegalStateException("Ambiguous method " + name);
}
this.getObjectMeta = new MethodMeta(access, name, descriptor, signature, exceptions);
return super.visitMethod(access, INTERNAL_PREFIX + name, descriptor, signature, exceptions);
}
if ("getBundleImpl".equals(name)) {
if (this.getBundleImplMeta != null) {
throw new IllegalStateException("Ambiguous method " + name);
}
this.getBundleImplMeta = new MethodMeta(access, name, descriptor, signature, exceptions);
return super.visitMethod(access, INTERNAL_PREFIX + name, descriptor, signature, exceptions);
}
if ("".equals(name)) {
cinitSeen = true;
return new MethodVisitor(ASM7, super.visitMethod(access, name, descriptor, signature, exceptions)) {
@Override
public void visitCode() {
super.visitCode();
setIncludesExcludes(mv);
}
@Override
public void visitMaxs(final int maxStack, final int maxLocals) {
super.visitMaxs(-1, -1);
}
};
}
return super.visitMethod(access, name, descriptor, signature, exceptions);
}
@Override
public void visitEnd() {
if (getObjectMeta == null || getBundleImplMeta == null) { // validate our state
throw new IllegalStateException("No getObject or getBundleImpl found");
}
addCustomStaticFields();
addCustomField();
createIsIncluded();
createDoFormat();
createDelegatingGetObject();
createDelegatingGetBundleImpl();
if (!cinitSeen) {
final MethodVisitor mv = super.visitMethod(ACC_STATIC, "", "()V", null, null);
mv.visitCode();
setIncludesExcludes(mv);
mv.visitInsn(RETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
super.visitEnd();
}
private void addCustomStaticFields() {
visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, INTERNAL_PREFIX + "INCLUDES", "Ljava/util/Collection;",
"Ljava/util/Collection;", null).visitEnd();
visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, INTERNAL_PREFIX + "EXCLUDES", "Ljava/util/Collection;",
"Ljava/util/Collection;", null).visitEnd();
}
private void addCustomField() {
visitField(ACC_PRIVATE, INTERNAL_PREFIX + "instrumented", "Z", null, null).visitEnd();
}
private void setIncludesExcludes(final MethodVisitor mv) {
createArray(includes, mv);
mv.visitFieldInsn(PUTSTATIC, owner, INTERNAL_PREFIX + "INCLUDES", "Ljava/util/Collection;");
createArray(excludes, mv);
mv.visitFieldInsn(PUTSTATIC, owner, INTERNAL_PREFIX + "EXCLUDES", "Ljava/util/Collection;");
}
private void createArray(final Collection values, final MethodVisitor mv) {
if (values == null || values.isEmpty()) {
mv.visitInsn(ACONST_NULL);
} else {
visitInt(mv, values.size());
mv.visitTypeInsn(ANEWARRAY, "java/lang/String");
int idx = 0;
for (final String value : values) {
mv.visitInsn(DUP);
visitInt(mv, idx);
mv.visitLdcInsn(value);
mv.visitInsn(AASTORE);
idx++;
}
mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "asList", "([Ljava/lang/Object;)Ljava/util/List;", false);
}
}
private void visitInt(final MethodVisitor mv, final int value) {
switch (value) {
case 0:
mv.visitInsn(ICONST_0);
break;
case 1:
mv.visitInsn(ICONST_1);
break;
case 2:
mv.visitInsn(ICONST_2);
break;
case 3:
mv.visitInsn(ICONST_3);
break;
case 4:
mv.visitInsn(ICONST_4);
break;
case 5:
mv.visitInsn(ICONST_5);
break;
default:
if (value > 5 && value <= 255) {
mv.visitInsn(BIPUSH);
} else {
mv.visitInsn(SIPUSH);
}
}
}
private void createIsIncluded() {
{
final MethodVisitor mv = visitMethod(ACC_PRIVATE + ACC_STATIC, INTERNAL_PREFIX + "matches",
"(Ljava/lang/String;Ljava/util/Collection;)Z",
"(Ljava/lang/String;Ljava/util/Collection;)Z", null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
final Label l0 = new Label();
mv.visitJumpInsn(IFNULL, l0);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Collection", "stream", "()Ljava/util/stream/Stream;", true);
mv.visitVarInsn(ALOAD, 0);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
mv.visitInsn(POP);
mv.visitInvokeDynamicInsn("test", "(Ljava/lang/String;)Ljava/util/function/Predicate;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(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;"),
Type.getType("(Ljava/lang/Object;)Z"),
new Handle(H_INVOKEVIRTUAL, "java/lang/String", "startsWith", "(Ljava/lang/String;)Z", false),
Type.getType("(Ljava/lang/String;)Z"));
mv.visitMethodInsn(INVOKEINTERFACE, "java/util/stream/Stream", "anyMatch", "(Ljava/util/function/Predicate;)Z",
true);
mv.visitJumpInsn(IFEQ, l0);
mv.visitInsn(ICONST_1);
final Label l1 = new Label();
mv.visitJumpInsn(GOTO, l1);
mv.visitLabel(l0);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitInsn(ICONST_0);
mv.visitLabel(l1);
mv.visitFrame(F_SAME1, 0, null, 1, new Object[] { INTEGER });
mv.visitInsn(IRETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
{
final MethodVisitor mv = visitMethod(ACC_PRIVATE + ACC_STATIC, INTERNAL_PREFIX + "isIncluded",
"(Ljava/lang/String;)Z", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
Label l0 = new Label();
mv.visitJumpInsn(IFNULL, l0);
mv.visitFieldInsn(GETSTATIC, owner, INTERNAL_PREFIX + "EXCLUDES", "Ljava/util/Collection;");
Label l1 = new Label();
mv.visitJumpInsn(IFNULL, l1);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETSTATIC, owner, INTERNAL_PREFIX + "EXCLUDES", "Ljava/util/Collection;");
mv.visitMethodInsn(INVOKESTATIC, owner, INTERNAL_PREFIX + "matches",
"(Ljava/lang/String;Ljava/util/Collection;)Z", false);
Label l2 = new Label();
mv.visitJumpInsn(IFNE, l2);
mv.visitLabel(l1);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitFieldInsn(GETSTATIC, owner, INTERNAL_PREFIX + "INCLUDES", "Ljava/util/Collection;");
mv.visitJumpInsn(IFNULL, l0);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETSTATIC, owner, INTERNAL_PREFIX + "INCLUDES", "Ljava/util/Collection;");
mv.visitMethodInsn(INVOKESTATIC, owner, INTERNAL_PREFIX + "matches",
"(Ljava/lang/String;Ljava/util/Collection;)Z", false);
mv.visitJumpInsn(IFEQ, l2);
mv.visitLabel(l0);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitInsn(ICONST_1);
Label l3 = new Label();
mv.visitJumpInsn(GOTO, l3);
mv.visitLabel(l2);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitInsn(ICONST_0);
mv.visitLabel(l3);
mv.visitFrame(F_SAME1, 0, null, 1, new Object[] { INTEGER });
mv.visitInsn(IRETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
}
private void createDoFormat() {
{
final MethodVisitor mv = visitMethod(ACC_PRIVATE, INTERNAL_PREFIX + "doFormat",
"(Ljava/lang/Object;)Ljava/lang/Object;", null, null);
mv.visitCode();
mv.visitLdcInsn(Type.getType("Ljava/lang/String;"));
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "isInstance", "(Ljava/lang/Object;)Z", false);
final Label l0 = new Label();
mv.visitJumpInsn(IFEQ, l0);
mv.visitVarInsn(ALOAD, 0);
mv.visitLdcInsn(Type.getType("Ljava/lang/String;"));
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "cast", "(Ljava/lang/Object;)Ljava/lang/Object;", false);
mv.visitTypeInsn(CHECKCAST, "java/lang/String");
mv.visitMethodInsn(INVOKESPECIAL, owner, INTERNAL_PREFIX + "doFormatString",
"(Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitInsn(ARETURN);
mv.visitLabel(l0);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitLdcInsn(Type.getType("[Ljava/lang/String;"));
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "isInstance", "(Ljava/lang/Object;)Z", false);
Label l1 = new Label();
mv.visitJumpInsn(IFEQ, l1);
mv.visitLdcInsn(Type.getType("[Ljava/lang/String;"));
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "cast", "(Ljava/lang/Object;)Ljava/lang/Object;", false);
mv.visitTypeInsn(CHECKCAST, "[Ljava/lang/Object;");
mv.visitMethodInsn(INVOKESTATIC, "java/util/stream/Stream", "of",
"([Ljava/lang/Object;)Ljava/util/stream/Stream;", true);
mv.visitVarInsn(ALOAD, 0);
mv.visitInvokeDynamicInsn("apply", "(L" + owner + ";)Ljava/util/function/Function;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;",
false), Type.getType("(Ljava/lang/Object;)Ljava/lang/Object;"),
new Handle(H_INVOKESPECIAL, owner, INTERNAL_PREFIX + "doFormatString",
"(Ljava/lang/String;)Ljava/lang/String;", false),
Type.getType("(Ljava/lang/String;)Ljava/lang/String;"));
mv.visitMethodInsn(INVOKEINTERFACE, "java/util/stream/Stream", "map",
"(Ljava/util/function/Function;)Ljava/util/stream/Stream;", true);
mv.visitInvokeDynamicInsn("apply", "()Ljava/util/function/IntFunction;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;",
false), Type.getType("(I)Ljava/lang/Object;"),
new Handle(H_INVOKESTATIC, owner, "lambda$" + INTERNAL_PREFIX + "doFormat$0", "(I)[Ljava/lang/String;", false),
Type.getType("(I)[Ljava/lang/String;"));
mv.visitMethodInsn(INVOKEINTERFACE, "java/util/stream/Stream", "toArray",
"(Ljava/util/function/IntFunction;)[Ljava/lang/Object;", true);
mv.visitInsn(ARETURN);
mv.visitLabel(l1);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitVarInsn(ALOAD, 1);
mv.visitInsn(ARETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
{
final MethodVisitor mv = visitMethod(ACC_PRIVATE, INTERNAL_PREFIX + "doFormatString",
"(Ljava/lang/String;)Ljava/lang/String;", null, null);
mv.visitCode();
mv.visitLdcInsn(pattern);
mv.visitLdcInsn("$value");
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replace",
"(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;", false);
mv.visitLdcInsn("$locale");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, owner, "getLocale", "()Ljava/util/Locale;", false);
mv.visitMethodInsn(INVOKESTATIC, "java/util/Optional", "ofNullable", "(Ljava/lang/Object;)Ljava/util/Optional;",
false);
mv.visitInvokeDynamicInsn("apply", "()Ljava/util/function/Function;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;", false),
Type.getType("(Ljava/lang/Object;)Ljava/lang/Object;"),
new Handle(H_INVOKEVIRTUAL, "java/util/Locale", "toString", "()Ljava/lang/String;", false),
Type.getType("(Ljava/util/Locale;)Ljava/lang/String;"));
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Optional", "map",
"(Ljava/util/function/Function;)Ljava/util/Optional;", false);
mv.visitInvokeDynamicInsn("test", "()Ljava/util/function/Predicate;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;", false),
Type.getType("(Ljava/lang/Object;)Z"),
new Handle(H_INVOKESTATIC, owner, "lambda$" + INTERNAL_PREFIX + "doFormatString$0", "(Ljava/lang/String;)Z", false),
Type.getType("(Ljava/lang/String;)Z"));
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Optional", "filter",
"(Ljava/util/function/Predicate;)Ljava/util/Optional;", false);
mv.visitLdcInsn("default");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Optional", "orElse", "(Ljava/lang/Object;)Ljava/lang/Object;",
false);
mv.visitTypeInsn(CHECKCAST, "java/lang/CharSequence");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replace",
"(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;", false);
mv.visitLdcInsn("$lang");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, owner, "getLocale", "()Ljava/util/Locale;", false);
mv.visitMethodInsn(INVOKESTATIC, "java/util/Optional", "ofNullable", "(Ljava/lang/Object;)Ljava/util/Optional;",
false);
mv.visitInvokeDynamicInsn("apply", "()Ljava/util/function/Function;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;", false),
Type.getType("(Ljava/lang/Object;)Ljava/lang/Object;"),
new Handle(H_INVOKEVIRTUAL, "java/util/Locale", "getLanguage", "()Ljava/lang/String;", false),
Type.getType("(Ljava/util/Locale;)Ljava/lang/String;"));
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Optional", "map",
"(Ljava/util/function/Function;)Ljava/util/Optional;", false);
mv.visitInvokeDynamicInsn("test", "()Ljava/util/function/Predicate;", new Handle(H_INVOKESTATIC,
"java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;", false),
Type.getType("(Ljava/lang/Object;)Z"),
new Handle(H_INVOKESTATIC, owner, "lambda$" + INTERNAL_PREFIX + "doFormatString$1", "(Ljava/lang/String;)Z", false),
Type.getType("(Ljava/lang/String;)Z"));
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Optional", "filter",
"(Ljava/util/function/Predicate;)Ljava/util/Optional;", false);
mv.visitLdcInsn("default");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Optional", "orElse", "(Ljava/lang/Object;)Ljava/lang/Object;",
false);
mv.visitTypeInsn(CHECKCAST, "java/lang/CharSequence");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replace",
"(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;", false);
mv.visitLdcInsn("$base");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, owner, "getBaseBundleName", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replace",
"(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;", false);
mv.visitInsn(ARETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
{
final MethodVisitor mv = visitMethod(ACC_PRIVATE + ACC_STATIC + ACC_SYNTHETIC, "lambda$" + INTERNAL_PREFIX + "doFormatString$0", "(Ljava/lang/String;)Z", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "isEmpty", "()Z", false);
final Label l0 = new Label();
mv.visitJumpInsn(IFNE, l0);
mv.visitInsn(ICONST_1);
final Label l1 = new Label();
mv.visitJumpInsn(GOTO, l1);
mv.visitLabel(l0);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitInsn(ICONST_0);
mv.visitLabel(l1);
mv.visitFrame(F_SAME1, 0, null, 1, new Object[] {INTEGER});
mv.visitInsn(IRETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
{
final MethodVisitor mv = visitMethod(ACC_PRIVATE + ACC_STATIC + ACC_SYNTHETIC, "lambda$" + INTERNAL_PREFIX + "doFormatString$1", "(Ljava/lang/String;)Z", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "isEmpty", "()Z", false);
final Label l0 = new Label();
mv.visitJumpInsn(IFNE, l0);
mv.visitInsn(ICONST_1);
final Label l1 = new Label();
mv.visitJumpInsn(GOTO, l1);
mv.visitLabel(l0);
mv.visitFrame(F_SAME, 0, null, 0, null);
mv.visitInsn(ICONST_0);
mv.visitLabel(l1);
mv.visitFrame(F_SAME1, 0, null, 1, new Object[] {INTEGER});
mv.visitInsn(IRETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
}
private void createDelegatingGetBundleImpl() {
final Label label = new Label();
final MethodVisitor mv = super.visitMethod(getBundleImplMeta.access, getBundleImplMeta.name,
getBundleImplMeta.descriptor, getBundleImplMeta.signature, getBundleImplMeta.exceptions);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitVarInsn(ALOAD, 3);
mv.visitMethodInsn(INVOKESTATIC, owner, INTERNAL_PREFIX + "getBundleImpl",
"(Ljava/lang/String;Ljava/util/Locale;Ljava/lang/ClassLoader;Ljava/util/ResourceBundle$Control;)L" + owner
+ ";",
false);
mv.visitVarInsn(ASTORE, 4);
mv.visitVarInsn(ALOAD, 4);
mv.visitJumpInsn(IFNULL, label);
mv.visitVarInsn(ALOAD, 0);
mv.visitJumpInsn(IFNULL, label);
mv.visitVarInsn(ALOAD, 4);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESTATIC, owner, INTERNAL_PREFIX + "isIncluded", "(Ljava/lang/String;)Z", false);
mv.visitFieldInsn(PUTFIELD, owner, INTERNAL_PREFIX + "instrumented", "Z");
mv.visitLabel(label);
mv.visitFrame(F_APPEND, 1, new Object[] { owner }, 0, null);
mv.visitVarInsn(ALOAD, 4);
mv.visitInsn(ARETURN);
mv.visitMaxs(-1, -1);
mv.visitEnd();
}
private void createDelegatingGetObject() {
final MethodVisitor getObject = super.visitMethod(getObjectMeta.access, getObjectMeta.name, getObjectMeta.descriptor,
getObjectMeta.signature, getObjectMeta.exceptions);
getObject.visitCode();
getObject.visitVarInsn(ALOAD, 0);
getObject.visitVarInsn(ALOAD, 1);
getObject.visitMethodInsn(INVOKEVIRTUAL, owner, INTERNAL_PREFIX + "getObject",
"(Ljava/lang/String;)Ljava/lang/Object;", false);
getObject.visitVarInsn(ASTORE, 2);
getObject.visitVarInsn(ALOAD, 0);
getObject.visitFieldInsn(GETFIELD, owner, INTERNAL_PREFIX + "instrumented", "Z");
final Label ifLabel = new Label();
getObject.visitJumpInsn(IFEQ, ifLabel);
getObject.visitVarInsn(ALOAD, 0);
getObject.visitVarInsn(ALOAD, 2);
getObject.visitMethodInsn(INVOKESPECIAL, owner, INTERNAL_PREFIX + "doFormat",
"(Ljava/lang/Object;)Ljava/lang/Object;", false);
getObject.visitInsn(ARETURN);
getObject.visitLabel(ifLabel);
getObject.visitFrame(F_APPEND, 1, new Object[] { "java/lang/Object" }, 0, null);
getObject.visitVarInsn(ALOAD, 2);
getObject.visitInsn(ARETURN);
getObject.visitMaxs(-1, -1);
getObject.visitEnd();
}
}
private static final class MethodMeta {
private final int access;
private final String name;
private final String descriptor;
private final String signature;
private final String[] exceptions;
private MethodMeta(final int access, final String name, final String descriptor, final String signature,
final String[] exceptions) {
this.access = access;
this.name = name;
this.descriptor = descriptor;
this.signature = signature;
this.exceptions = exceptions;
}
}
}
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