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parse Bootstarp of java/lang/invoke/StringConcatFactory for Java 11

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Volker Berlin 2022-09-03 18:15:55 +02:00
parent e4692a4e52
commit 6294172dbc
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1 changed files with 24 additions and 11 deletions
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35
src/de/inetsoftware/classparser/BootstrapMethod.java
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@ -46,22 +46,35 @@ public class BootstrapMethod {
* Create an instance. * Create an instance.
*/ */
BootstrapMethod( DataInputStream input, ConstantPool constantPool ) throws IOException { BootstrapMethod( DataInputStream input, ConstantPool constantPool ) throws IOException {
//TODO check that it is a known implementation type
int ref = input.readUnsignedShort(); int ref = input.readUnsignedShort();
//ConstantMethodRef method = (ConstantMethodRef)constantPool.get( ref ); // ever: java/lang/invoke/LambdaMetafactory.metafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; ConstantMethodRef method = (ConstantMethodRef)constantPool.get( ref );
int argCount = input.readUnsignedShort(); // ever: 3 parameters int argCount = input.readUnsignedShort(); // ever: 3 parameters
String factory = method.getClassName() + "." + method.getName() + method.getType();
switch( factory ) {
case "java/lang/invoke/LambdaMetafactory.metafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;":
case "java/lang/invoke/LambdaMetafactory.altMetafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;":
// the 3 values
samMethodType = (String)constantPool.get( input.readUnsignedShort() );
implMethod = (ConstantRef)constantPool.get( input.readUnsignedShort() );
instantiatedMethodType = (String)constantPool.get( input.readUnsignedShort() );
// the 3 values // skip extra parameters
samMethodType = (String)constantPool.get( input.readUnsignedShort() ); // argCount is 5 if the method is LambdaMetafactory.altMetafactory
implMethod = (ConstantRef)constantPool.get( input.readUnsignedShort() ); // occur if the Lambda type has 2 types compound with "&" like in java.time.chrono.AbstractChronology
instantiatedMethodType = (String)constantPool.get( input.readUnsignedShort() ); for( int i = 3; i < argCount; i++ ) {
constantPool.get( input.readUnsignedShort() );
}
break;
// skip extra parameters case "java/lang/invoke/StringConcatFactory.makeConcatWithConstants(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;":
// argCount is 5 if the method is LambdaMetafactory.altMetafactory // occur in Java 11 in java/util/logging/Logger.findResourceBundle
// occur if the Lambda type has 2 types compound with "&" like in java.time.chrono.AbstractChronology String recipe = (String)constantPool.get( input.readUnsignedShort() );
for( int i = 3; i < argCount; i++ ) { //TODO
constantPool.get( input.readUnsignedShort() ); break;
default:
throw new IOException( "Unknown invoke dynamic bootstrap factory: " + factory );
} }
} }