org.drools.core.factmodel.BuildUtils Maven / Gradle / Ivy
/*
* Copyright 2011 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.core.factmodel;
import org.mvel2.asm.MethodVisitor;
import org.mvel2.asm.Opcodes;
public class BuildUtils {
public static String[] getInternalTypes( String[] superClasses ) {
if ( superClasses == null ) {
return null;
}
String[] internals = new String[ superClasses.length ];
for ( int j = 0; j < internals.length; j++ ) {
internals[ j ] = getInternalType( superClasses[ j ] );
}
return internals.length > 0 ? internals : null;
}
public static String getGenericTypes(String[] interfaces) {
StringBuilder sb = new StringBuilder();
sb.append("" );
sb.append( getTypeDescriptor( Object.class.getName() ) );
for ( String intf : interfaces ) {
String temp = getTypeDescriptor( intf );
sb.append( temp.replace( ";", ";" ) );
}
return sb.toString();
}
/**
* Returns the corresponding internal type representation for the
* given type.
*
* I decided to not use the ASM Type class methods because they require
* resolving the actual type into a Class instance and at this point,
* I think it is best to delay type resolution until it is really needed.
*
* @param type
* @return
*/
public static String getInternalType(String type) {
String internalType = null;
if ( "byte".equals( type ) ) {
internalType = "B";
} else if ( "char".equals( type ) ) {
internalType = "C";
} else if ( "double".equals( type ) ) {
internalType = "D";
} else if ( "float".equals( type ) ) {
internalType = "F";
} else if ( "int".equals( type ) ) {
internalType = "I";
} else if ( "long".equals( type ) ) {
internalType = "J";
} else if ( "short".equals( type ) ) {
internalType = "S";
} else if ( "boolean".equals( type ) ) {
internalType = "Z";
} else if ( "void".equals( type ) ) {
internalType = "V";
} else if ( type != null ) {
// I think this will fail for inner classes, but we don't really
// support inner class generation at the moment
internalType = type.replace( '.',
'/' );
}
return internalType;
}
/**
* Returns the corresponding type descriptor for the
* given type.
*
* I decided to not use the ASM Type class methods because they require
* resolving the actual type into a Class instance and at this point,
* I think it is best to delay type resolution until it is really needed.
*
* @param type
* @return
*/
public static String getTypeDescriptor(String type) {
String internalType = null;
if ( "byte".equals( type ) ) {
internalType = "B";
} else if ( "char".equals( type ) ) {
internalType = "C";
} else if ( "double".equals( type ) ) {
internalType = "D";
} else if ( "float".equals( type ) ) {
internalType = "F";
} else if ( "int".equals( type ) ) {
internalType = "I";
} else if ( "long".equals( type ) ) {
internalType = "J";
} else if ( "short".equals( type ) ) {
internalType = "S";
} else if ( "boolean".equals( type ) ) {
internalType = "Z";
} else if ( "void".equals( type ) ) {
internalType = "V";
} else if ( type != null && type.startsWith( "[" ) ) {
int j = 0;
while ( type.charAt( ++j ) == '[' ) {}
if ( type.charAt( j ) == 'L' ) {
internalType = type.replace( '.', '/' );
} else {
internalType = type;
}
} else if ( type != null ) {
// I think this will fail for inner classes, but we don't really
// support inner class generation at the moment
internalType = "L" + type.replace( '.', '/' ) + ";";
}
return internalType;
}
// Can only be used with internal names, i.e. after [ has been prefix
public static String arrayType( String type ) {
if ( isArray( type ) )
if ( type.length() == arrayDimSize(type) +1 ) {
return type;
} else {
String ans = "Ljava/lang/Object;";
for ( int j = 0; j < arrayDimSize( type ); j++ ) {
ans = "[" + ans;
}
return ans;
}
return null;
}
public static int externalArrayDimSize( String className ) {
int j = className.length() - 1;
int dim = 0;
while ( j > 0 && className.charAt( j ) == ']' ) {
dim++;
j = j - 2;
}
return dim;
}
// Can only be used with internal names, i.e. after [ has been prefix
public static int arrayDimSize(String type) {
int j = 0;
while ( type.charAt( j ) == '[' ) {
j++;
}
return j;
}
/**
* Returns true if the provided type is a primitive type
*
* @param type
* @return
*/
public static boolean isPrimitive(String type) {
boolean isPrimitive = false;
if ( "byte".equals( type ) || "char".equals( type ) || "double".equals( type ) || "float".equals( type ) || "int".equals( type ) || "long".equals( type ) || "short".equals( type ) || "boolean".equals( type ) || "void".equals( type ) ) {
isPrimitive = true;
}
return isPrimitive;
}
/**
* Returns true if the provided type is an arrayType
* Can only be used with internal names, i.e. after [ has been prefix
*
* @param type
* @return
*/
public static boolean isArray( String type ) {
return type.startsWith( "[" );
}
public static Object getDefaultValue( FieldDefinition fld ) {
String type = fld.getTypeName();
if ( "byte".equals( type ) ) {
return fld.getDefaultValueAs_byte();
} else if ( "char".equals( type ) ) {
return fld.getDefaultValueAs_char();
} else if ( "double".equals( type ) ) {
return fld.getDefaultValueAs_double();
} else if ( "float".equals( type ) ) {
return fld.getDefaultValueAs_float();
} else if ( "int".equals( type ) ) {
return fld.getDefaultValueAs_int();
} else if ( "long".equals( type ) ) {
return fld.getDefaultValueAs_long();
} else if ( "short".equals( type ) ) {
return fld.getDefaultValueAs_short();
} else if ( "boolean".equals( type ) ) {
return fld.getDefaultValueAs_boolean();
} else if ( "java.lang.String".equals( type ) ) {
return fld.getDefaultValueAsString();
} else if ( "java.lang.Byte".equals( type ) || "Byte".equals( type )) {
return fld.getDefaultValueAsByte();
} else if ( "java.lang.Character".equals( type ) || "Character".equals( type ) ) {
return fld.getDefaultValueAsChar();
} else if ( "java.lang.Double".equals( type ) || "Double".equals( type )) {
return fld.getDefaultValueAsDouble();
} else if ( "java.lang.Float".equals( type ) || "Float".equals( type )) {
return fld.getDefaultValueAsFloat();
} else if ( "java.lang.Integer".equals( type ) || "Integer".equals( type )) {
return fld.getDefaultValueAsInt();
} else if ( "java.lang.Long".equals( type ) || "Long".equals( type )) {
return fld.getDefaultValueAsLong();
} else if ( "java.lang.Short".equals( type ) || "Short".equals( type )) {
return fld.getDefaultValueAsShort();
} else if ( "java.lang.Boolean".equals( type ) || "Boolean".equals( type )) {
return fld.getDefaultValueAsBoolean();
}
// return StringUtils.isEmpty( fld.getInitExpr() ) ? null : MVEL.eval( fld.getInitExpr() );
return null;
}
public static boolean isBoxed(String type) {
if (type == null) return false;
return "java.lang.Short".equals(type)
|| "java.lang.Byte".equals(type)
|| "java.lang.Character".equals(type)
|| "java.lang.Double".equals(type)
|| "java.lang.Float".equals(type)
|| "java.lang.Integer".equals(type)
|| "java.lang.Boolean".equals(type)
|| "java.lang.Long".equals(type) ;
}
public static String unBox(String type) {
if ( "java.lang.Byte".equals( type ) || "Byte".equals( type )) {
return getInternalType("byte");
} else if ( "java.lang.Character".equals( type ) || "Character".equals( type ) ) {
return getInternalType("char");
} else if ( "java.lang.Double".equals( type ) || "Double".equals( type )) {
return getInternalType("double");
} else if ( "java.lang.Float".equals( type ) || "Float".equals( type )) {
return getInternalType("float");
} else if ( "java.lang.Integer".equals( type ) || "Integer".equals( type )) {
return getInternalType("int");
} else if ( "java.lang.Long".equals( type ) || "Long".equals( type )) {
return getInternalType("long");
} else if ( "java.lang.Short".equals( type ) || "Short".equals( type )) {
return getInternalType("short");
} else if ( "java.lang.Boolean".equals( type ) || "Boolean".equals( type )) {
return getInternalType("boolean");
} else {
throw new RuntimeException("Unable to recognize boxed primitive type " + type);
}
}
public static String box(String type) {
if ( "byte".equals( type ) ) {
return "java.lang.Byte";
} else if ( "char".equals( type ) ) {
return "java.lang.Character";
} else if ( "double".equals( type ) ) {
return "java.lang.Double";
} else if ( "float".equals( type ) ) {
return "java.lang.Float";
} else if ( "int".equals( type ) ) {
return "java.lang.Integer";
} else if ( "long".equals( type ) ) {
return "java.lang.Long";
} else if ( "short".equals( type ) ) {
return "java.lang.Short";
} else if ( "boolean".equals( type ) ) {
return "java.lang.Boolean";
} else {
throw new RuntimeException("Unable to recognize primitive type " + type);
}
}
public static int sizeOf(String type) {
if ( "byte".equals( type ) ) {
return 1;
} else if ( "char".equals( type ) ) {
return 1;
} else if ( "double".equals( type ) ) {
return 2;
} else if ( "float".equals( type ) ) {
return 1;
} else if ( "int".equals( type ) ) {
return 1;
} else if ( "long".equals( type ) ) {
return 2;
} else if ( "short".equals( type ) ) {
return 1;
} else if ( "boolean".equals( type ) ) {
return 1;
} else {
return 1;
}
}
public static int returnType(String type) {
if ( "byte".equals( type ) ) {
return Opcodes.IRETURN;
} else if ( "char".equals( type ) ) {
return Opcodes.IRETURN;
} else if ( "double".equals( type ) ) {
return Opcodes.DRETURN;
} else if ( "float".equals( type ) ) {
return Opcodes.FRETURN;
} else if ( "int".equals( type ) ) {
return Opcodes.IRETURN;
} else if ( "long".equals( type ) ) {
return Opcodes.LRETURN;
} else if ( "short".equals( type ) ) {
return Opcodes.IRETURN;
} else if ( "boolean".equals( type ) ) {
return Opcodes.IRETURN;
} else if ( "void".equals( type ) ) {
return Opcodes.RETURN;
} else {
return Opcodes.ARETURN;
}
}
public static int varType(String type) {
if ( "byte".equals( type ) ) {
return Opcodes.ILOAD;
} else if ( "char".equals( type ) ) {
return Opcodes.ILOAD;
} else if ( "double".equals( type ) ) {
return Opcodes.DLOAD;
} else if ( "float".equals( type ) ) {
return Opcodes.FLOAD;
} else if ( "int".equals( type ) ) {
return Opcodes.ILOAD;
} else if ( "long".equals( type ) ) {
return Opcodes.LLOAD;
} else if ( "short".equals( type ) ) {
return Opcodes.ILOAD;
} else if ( "boolean".equals( type ) ) {
return Opcodes.ILOAD;
} else {
return Opcodes.ALOAD;
}
}
public static int storeType(String type) {
if ( "byte".equals( type ) ) {
return Opcodes.ISTORE;
} else if ( "char".equals( type ) ) {
return Opcodes.ISTORE;
} else if ( "double".equals( type ) ) {
return Opcodes.DSTORE;
} else if ( "float".equals( type ) ) {
return Opcodes.FSTORE;
} else if ( "int".equals( type ) ) {
return Opcodes.ISTORE;
} else if ( "long".equals( type ) ) {
return Opcodes.LSTORE;
} else if ( "short".equals( type ) ) {
return Opcodes.ISTORE;
} else if ( "boolean".equals( type ) ) {
return Opcodes.ISTORE;
} else {
return Opcodes.ASTORE;
}
}
public static boolean isBoolean(String type) {
return "boolean".equals( type );
// || "java.lang.Boolean".equals( type )
// || "Boolean".equals( type );
}
public static int zero( String type ) {
if ( "byte".equals( type ) ) {
return Opcodes.ICONST_0;
} else if ( "char".equals( type ) ) {
return Opcodes.ICONST_0;
} else if ( "double".equals( type ) ) {
return Opcodes.DCONST_0;
} else if ( "float".equals( type ) ) {
return Opcodes.FCONST_0;
} else if ( "int".equals( type ) ) {
return Opcodes.ICONST_0;
} else if ( "long".equals( type ) ) {
return Opcodes.LCONST_0;
} else if ( "short".equals( type ) ) {
return Opcodes.ICONST_0;
} else if ( "boolean".equals( type ) ) {
return Opcodes.ICONST_0;
} else {
return Opcodes.ACONST_NULL;
}
}
public static String getterName( String fieldName, String type ) {
String prefix = BuildUtils.isBoolean( type ) ? "is" : "get";
return prefix + fieldName.substring(0,1).toUpperCase() + fieldName.substring(1);
}
public static String setterName(String fieldName, String type) {
return "set" + fieldName.substring(0,1).toUpperCase() + fieldName.substring(1);
}
public static String extractor(String type) {
if ( "byte".equals( type ) ) {
return "getByteValue";
} else if ( "char".equals( type ) ) {
return "getCharValue";
} else if ( "double".equals( type ) ) {
return "getDoubleValue";
} else if ( "float".equals( type ) ) {
return "getFloatValue";
} else if ( "int".equals( type ) ) {
return "getIntValue";
} else if ( "long".equals( type ) ) {
return "getLongValue";
} else if ( "short".equals( type ) ) {
return "getShortValue";
} else if ( "boolean".equals( type ) ) {
return "getBooleanValue";
} else {
return "getValue";
}
}
public static String injector( String type ) {
if ( "byte".equals( type ) ) {
return "setByteValue";
} else if ( "char".equals( type ) ) {
return "setCharValue";
} else if ( "double".equals( type ) ) {
return "setDoubleValue";
} else if ( "float".equals( type ) ) {
return "setFloatValue";
} else if ( "int".equals( type ) ) {
return "setIntValue";
} else if ( "long".equals( type ) ) {
return "setLongValue";
} else if ( "short".equals( type ) ) {
return "setShortValue";
} else if ( "boolean".equals( type ) ) {
return "setBooleanValue";
} else {
return "setValue";
}
}
public static String numericMorph(String type) {
if ( "java.lang.Byte".equals( type ) || "Byte".equals( type )) {
return "byteValue";
} else if ( "java.lang.Double".equals( type ) || "Double".equals( type )) {
return "doubleValue";
} else if ( "java.lang.Character".equals( type ) || "Character".equals( type )) {
return "charValue";
} else if ( "java.lang.Boolean".equals( type ) || "Boolean".equals( type )) {
return "booleanValue";
} else if ( "java.lang.Float".equals( type ) || "Float".equals( type )) {
return "floatValue";
} else if ( "java.lang.Integer".equals( type ) || "Integer".equals( type )) {
return "intValue";
} else if ( "java.lang.Long".equals( type ) || "Long".equals( type )) {
return "longValue";
} else if ( "java.lang.Short".equals( type ) || "Short".equals( type )) {
return "shortValue";
} else {
throw new RuntimeException("Not a numeric type " + type);
}
}
public static void pushInt(MethodVisitor mv, int j) {
switch ( j ) {
case 0 : mv.visitInsn( Opcodes.ICONST_0 );
break;
case 1 : mv.visitInsn( Opcodes.ICONST_1 );
break;
case 2 : mv.visitInsn( Opcodes.ICONST_2 );
break;
case 3 : mv.visitInsn( Opcodes.ICONST_3 );
break;
case 4 : mv.visitInsn( Opcodes.ICONST_4 );
break;
case 5 : mv.visitInsn( Opcodes.ICONST_5 );
break;
default : mv.visitIntInsn( Opcodes.BIPUSH, j );
}
}
public static String serializationWriterName( String type ) {
if ( isPrimitive( type ) ) {
if ( "byte".equals( type ) ) {
return "writeByte";
} else if ( "char".equals( type ) ) {
return "writeChar";
} else if ( "double".equals( type ) ) {
return "writeDouble";
} else if ( "float".equals( type ) ) {
return "writeFloat";
} else if ( "int".equals( type ) ) {
return "writeInt";
} else if ( "long".equals( type ) ) {
return "writeLong";
} else if ( "short".equals( type ) ) {
return "writeShort";
} else if ( "boolean".equals( type ) ) {
return "writeBoolean";
} else {
throw new RuntimeException( "No serialization method found for " + type );
}
} else {
return "writeObject";
}
}
public static String serializationReaderName( String type ) {
if ( isPrimitive( type ) ) {
if ( "byte".equals( type ) ) {
return "readByte";
} else if ( "char".equals( type ) ) {
return "readChar";
} else if ( "double".equals( type ) ) {
return "readDouble";
} else if ( "float".equals( type ) ) {
return "readFloat";
} else if ( "int".equals( type ) ) {
return "readInt";
} else if ( "long".equals( type ) ) {
return "readLong";
} else if ( "short".equals( type ) ) {
return "readShort";
} else if ( "boolean".equals( type ) ) {
return "readBoolean";
} else {
throw new RuntimeException( "No serialization method found for " + type );
}
} else {
return "readObject";
}
}
public static String serializationType( String type ) {
if ( isPrimitive( type ) ) {
if ( "byte".equals( type ) ) {
return "int";
} else if ( "char".equals( type ) ) {
return "int";
} else if ( "double".equals( type ) ) {
return "double";
} else if ( "float".equals( type ) ) {
return "float";
} else if ( "int".equals( type ) ) {
return "int";
} else if ( "long".equals( type ) ) {
return "long";
} else if ( "short".equals( type ) ) {
return "int";
} else if ( "boolean".equals( type ) ) {
return "boolean";
} else {
return type;
}
} else {
return type;
}
}
}