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Parse annotations with arrays

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Volker Berlin 2021-04-03 22:07:48 +02:00
parent 1771ab1f39
commit d271ac1a2f
1 changed files with 42 additions and 22 deletions
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64
src/de/inetsoftware/classparser/Annotations.java
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@ -1,5 +1,5 @@
/*
* Copyright 2017 - 2019 Volker Berlin (i-net software)
* Copyright 2017 - 2021 Volker Berlin (i-net software)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -36,39 +36,59 @@ public class Annotations {
* if an I/O error occurs
* @return the map of the annotation names to its attributes
*/
static Map<String,Map<String,Object>> read( DataInputStream input, ConstantPool constantPool ) throws IOException {
Map<String,Map<String,Object>> annotations = new HashMap<>();
static Map<String, Map<String, Object>> read( DataInputStream input, ConstantPool constantPool ) throws IOException {
Map<String, Map<String, Object>> annotations = new HashMap<>();
int count = input.readUnsignedShort();
for( int i = 0; i < count; i++ ) {
String className = (String)constantPool.get( input.readUnsignedShort() );
className = className.substring( 1, className.length() - 1 ).replace( '/', '.' ); // has the form: "Lcom/package/ClassName;"
Map<String,Object> valuePairs = new HashMap<>();
Map<String, Object> valuePairs = new HashMap<>();
annotations.put( className, valuePairs );
int valuePairCount = input.readUnsignedShort();
for( int p = 0; p < valuePairCount; p++ ) {
String key = (String)constantPool.get( input.readUnsignedShort() );
int type = input.readUnsignedByte();
Object value;
switch( type ) {
case 'B':
case 'C':
case 'D':
case 'F':
case 'I':
case 'J':
case 'S':
case 'Z':
case 's':
value = constantPool.get( input.readUnsignedShort() );
break;
default:
// TODO other possible values for type: e c @ [
throw new IOException( "Unknown annotation value type pool type: " + type );
}
Object value = readElementValue( input, constantPool );
valuePairs.put( key, value );
}
}
return annotations;
}
/**
* Read a single element value
*
* @param input
* the stream of the RuntimeInvisibleAnnotations attribute
* @param constantPool
* the ConstantPool of the class
* @return the value
* @throws IOException
* if an I/O error occurs
*/
private static Object readElementValue( DataInputStream input, ConstantPool constantPool ) throws IOException {
int type = input.readUnsignedByte();
switch( type ) {
case 'B':
case 'C':
case 'D':
case 'F':
case 'I':
case 'J':
case 'S':
case 'Z':
case 's':
return constantPool.get( input.readUnsignedShort() );
case '[':
int count = input.readUnsignedShort();
Object[] values = new Object[count];
for( int i = 0; i < count; i++ ) {
values[i] = readElementValue( input, constantPool );
}
return values;
default:
// TODO other possible values for type: e c @
throw new IOException( "Unknown annotation value type pool type: " + type );
}
}
}