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Parse also the annotation types: class, enum and annotation. #41

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Volker Berlin 2022-05-28 15:48:13 +02:00
parent d46050a3a3
commit ad93c2c10b
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1 changed files with 37 additions and 14 deletions
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51
src/de/inetsoftware/classparser/Annotations.java
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@ -1,5 +1,5 @@
/* /*
* Copyright 2017 - 2021 Volker Berlin (i-net software) * Copyright 2017 - 2022 Volker Berlin (i-net software)
* *
* 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.
@ -40,21 +40,37 @@ public class Annotations {
Map<String, Map<String, Object>> annotations = new HashMap<>(); Map<String, Map<String, Object>> annotations = new HashMap<>();
int count = input.readUnsignedShort(); int count = input.readUnsignedShort();
for( int i = 0; i < count; i++ ) { for( int i = 0; i < count; i++ ) {
String className = (String)constantPool.get( input.readUnsignedShort() ); readAnnotation( input, constantPool, annotations );
className = className.substring( 1, className.length() - 1 ).replace( '/', '.' ); // has the form: "Lcom/package/ClassName;"
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() );
Object value = readElementValue( input, constantPool );
valuePairs.put( key, value );
}
} }
return annotations; return annotations;
} }
/**
* Read a single annotation and add it to the container
*
* @param input
* the stream of the RuntimeInvisibleAnnotations attribute
* @param constantPool
* the ConstantPool of the class
* @param annotations
* container for the annotation
* @throws IOException
* if an I/O error occurs
*/
private static void readAnnotation( DataInputStream input, ConstantPool constantPool, Map<String, Map<String, Object>> annotations ) throws IOException {
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<>();
annotations.put( className, valuePairs );
int valuePairCount = input.readUnsignedShort();
for( int p = 0; p < valuePairCount; p++ ) {
String key = (String)constantPool.get( input.readUnsignedShort() );
Object value = readElementValue( input, constantPool );
valuePairs.put( key, value );
}
}
/** /**
* Read a single element value * Read a single element value
* *
@ -77,8 +93,16 @@ public class Annotations {
case 'J': case 'J':
case 'S': case 'S':
case 'Z': case 'Z':
case 's': case 's': // String
case 'c': // Class
return constantPool.get( input.readUnsignedShort() ); return constantPool.get( input.readUnsignedShort() );
case 'e': // enum constant
constantPool.get( input.readUnsignedShort() ); // enum type name
return constantPool.get( input.readUnsignedShort() ); // enum constant name
case '@': // annotation type
Map<String, Map<String, Object>> annotations = new HashMap<>();
readAnnotation( input, constantPool, annotations );
return annotations;
case '[': case '[':
int count = input.readUnsignedShort(); int count = input.readUnsignedShort();
Object[] values = new Object[count]; Object[] values = new Object[count];
@ -87,7 +111,6 @@ public class Annotations {
} }
return values; return values;
default: default:
// TODO other possible values for type: e c @
throw new IOException( "Unknown annotation value type pool type: " + type ); throw new IOException( "Unknown annotation value type pool type: " + type );
} }
} }