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org.drools.core.factmodel.traits.AbstractProxyClassBuilderImpl 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.traits;
import org.drools.core.factmodel.BuildUtils;
import org.drools.core.factmodel.ClassDefinition;
import org.drools.core.factmodel.FieldDefinition;
import org.mvel2.MVEL;
import org.mvel2.asm.ClassVisitor;
import org.mvel2.asm.ClassWriter;
import org.mvel2.asm.Label;
import org.mvel2.asm.MethodVisitor;
import org.mvel2.asm.Opcodes;
import org.mvel2.asm.Type;
import java.io.IOException;
import java.io.Serializable;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.BitSet;
import java.util.Iterator;
import java.util.Map;
public abstract class AbstractProxyClassBuilderImpl implements TraitProxyClassBuilder, Serializable {
protected transient ClassDefinition trait;
protected transient Class proxyBaseClass;
protected transient TraitRegistry traitRegistry;
protected ClassDefinition getTrait() {
return trait;
}
public void init( ClassDefinition trait, Class baseClass, TraitRegistry traitRegistry ) {
this.trait = trait;
this.proxyBaseClass = baseClass;
this.traitRegistry = traitRegistry;
}
protected void helpBuildClass( ClassDefinition core,
ClassWriter cw,
String internalProxy,
String descrCore,
BitSet mask ) throws IOException,
SecurityException,
IllegalArgumentException,
ClassNotFoundException,
NoSuchMethodException,
IllegalAccessException,
InvocationTargetException,
InstantiationException,
NoSuchFieldException {
MethodVisitor mv;
{
mv = cw.visitMethod( ACC_STATIC, "", "()V", null, null );
mv.visitCode();
mv.visitLdcInsn( Type.getType( Type.getDescriptor( trait.getDefinedClass() ) ) );
mv.visitMethodInsn( INVOKEVIRTUAL,
Type.getInternalName( Class.class ), "getName", "()" + Type.getDescriptor( String.class ), false);
mv.visitFieldInsn( PUTSTATIC,
internalProxy,
TraitType.traitNameField,
Type.getDescriptor( String.class ) );
mv.visitInsn( RETURN );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod( ACC_PUBLIC, "", "()V", null, null );
mv.visitCode();
mv.visitVarInsn( ALOAD, 0 );
mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "", "()V", false );
mv.visitInsn( RETURN );
// mv.visitMaxs( 1, 1 );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod( ACC_PUBLIC, "_getTraitName", "()" + Type.getDescriptor( String.class ), null, null);
mv.visitCode();
mv.visitFieldInsn( GETSTATIC, internalProxy, TraitType.traitNameField, Type.getDescriptor( String.class ) );
mv.visitInsn( ARETURN );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod( ACC_PUBLIC, "getCore", "()" + descrCore + "", null, null );
mv.visitCode();
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, internalProxy, "object", descrCore );
mv.visitInsn( ARETURN );
// mv.visitMaxs( 1, 1 );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PUBLIC, "getObject", "()" + Type.getDescriptor( TraitableBean.class ), null, null);
mv.visitCode();
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, internalProxy, "object", descrCore );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitInsn( ARETURN );
// mv.visitMaxs( 1, 1 );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod( ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "getCore", "()" + Type.getDescriptor( Object.class ), null, null );
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKEVIRTUAL, internalProxy, "getCore", "()" + descrCore, false );
mv.visitInsn(ARETURN);
// mv.visitMaxs( 1, 1 );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod( ACC_PUBLIC, "_isTop", "()Z", null, null );
mv.visitCode();
mv.visitInsn( Thing.class.equals( trait.getDefinedClass() ) ? ICONST_1 : ICONST_0 );
mv.visitInsn( IRETURN );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
{
mv = cw.visitMethod( ACC_PUBLIC, "shed", Type.getMethodDescriptor( Type.VOID_TYPE ), null, null );
mv.visitCode();
if ( core.isFullTraiting() ) {
Iterator iter = trait.getFieldsDefinitions().iterator();
for ( int j = 0; j < trait.getFieldsDefinitions().size(); j++ ) {
FieldDefinition fld = iter.next();
boolean hardField = ! TraitRegistry.isSoftField( fld, j, mask );
shedField( mv, fld, internalProxy, core, hardField, j + 2 );
}
}
mv.visitInsn( RETURN );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
}
protected void buildShadowMethod( ClassWriter cw, ClassDefinition trait, ClassDefinition core, Method m ) {
MethodVisitor mv = cw.visitMethod( ACC_PUBLIC,
m.getName(),
Type.getMethodDescriptor( m ),
null,
null );
mv.visitCode();
mv.visitVarInsn( ALOAD, 0 );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( TraitFactory.getProxyName( trait, core ) ),
"getCore",
Type.getMethodDescriptor( Type.getType( core.getDefinedClass() ) ),
false );
for ( int j = 0; j < m.getParameterTypes().length; j++ ) {
mv.visitVarInsn( BuildUtils.varType( m.getParameterTypes()[ j ].getName() ), j + 1 );
}
mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( core.getDefinedClass() ), m.getName(), Type.getMethodDescriptor( m ), core.getDefinedClass().isInterface() );
mv.visitInsn( BuildUtils.returnType( m.getReturnType().getName() ) );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
protected void shedField( MethodVisitor mv, FieldDefinition fld, String proxyName, ClassDefinition core, boolean hardField, int j ) {
FieldDefinition coreField = core.getFieldByAlias( fld.resolveAlias() );
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "object", Type.getDescriptor( core.getDefinedClass() ) );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitableBean.class ),
"_getFieldTMS",
Type.getMethodDescriptor( Type.getType( TraitFieldTMS.class ) ),
true );
mv.visitVarInsn( ASTORE, 1 );
mv.visitVarInsn( ALOAD, 1 );
// fld Name
mv.visitLdcInsn( fld.resolveAlias() );
// this
mv.visitVarInsn( ALOAD, 0 );
// fld type
if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fld.getTypeName() ) ) ) );
} else {
mv.visitLdcInsn( Type.getType( Type.getDescriptor( fld.getType() ) ) );
}
if ( hardField ) {
if ( BuildUtils.isPrimitive( coreField.getTypeName() ) ) {
mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( coreField.getTypeName() ) ) ) );
} else {
mv.visitLdcInsn( Type.getType( Type.getDescriptor( coreField.getType() ) ) );
}
} else {
mv.visitLdcInsn( Type.getType( Type.getDescriptor( Object.class ) ) );
}
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitFieldTMS.class ),
"shedField",
Type.getMethodDescriptor( Type.getType( Object.class ),
Type.getType( String.class ),
Type.getType( TraitType.class ),
Type.getType( Class.class ),
Type.getType( Class.class ) ),
true );
mv.visitVarInsn( ASTORE, j );
if ( hardField ) {
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "object", Type.getDescriptor( core.getDefinedClass() ) );
mv.visitVarInsn( ALOAD, j );
fixPrimitive( mv, coreField, j );
mv.visitMethodInsn( INVOKEVIRTUAL,
Type.getInternalName( core.getDefinedClass() ),
BuildUtils.setterName( coreField.getName(), coreField.getTypeName() ),
"(" + BuildUtils.getTypeDescriptor( coreField.getTypeName() ) + ")" + Type.getDescriptor( void.class ),
false );
} else {
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "map", Type.getDescriptor( Map.class ) );
mv.visitLdcInsn( fld.resolveAlias() );
mv.visitVarInsn( ALOAD, j );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( Map.class ),
"put",
Type.getMethodDescriptor( Type.getType( Object.class ), Type.getType( Object.class ), Type.getType( Object.class ) ),
true );
}
}
private void fixPrimitive( MethodVisitor mv, FieldDefinition coreField, int j ) {
if ( BuildUtils.isPrimitive( coreField.getTypeName() ) ) {
Label l0 = new Label();
mv.visitJumpInsn( IFNULL, l0 );
mv.visitVarInsn( ALOAD, j );
mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( BuildUtils.box( coreField.getTypeName() ) ) );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( BuildUtils.box( coreField.getTypeName() ) ),
BuildUtils.numericMorph( BuildUtils.box( coreField.getTypeName() ) ),
Type.getMethodDescriptor( Type.getType( coreField.getType() ) ),
false );
Label l1 = new Label();
mv.visitJumpInsn( GOTO, l1 );
mv.visitLabel( l0 );
mv.visitInsn( BuildUtils.zero( coreField.getTypeName() ) );
mv.visitLabel( l1 );
} else {
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( coreField.getType() ) );
}
}
protected void buildHardSetter( ClassVisitor cw, FieldDefinition field, String masterName, ClassDefinition trait, ClassDefinition core, String setterName, int accessMode ) {
MethodVisitor mv = cw.visitMethod( accessMode,
setterName,
"(" + Type.getDescriptor( field.getType() ) + ")V",
null,
null );
mv.visitCode();
if ( core.isFullTraiting() ) {
helpSet( core, field, mv, masterName );
}
TraitFactory.invokeInjector( mv, masterName, core, field, false, 1 );
mv.visitInsn( RETURN );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
protected void synchFieldLogical( MethodVisitor mv, FieldDefinition fld, String proxyName, ClassDefinition core, int j ) {
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "object", Type.getDescriptor( core.getDefinedClass() ) );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitableBean.class ),
"_getFieldTMS",
Type.getMethodDescriptor( Type.getType( TraitFieldTMS.class ) ),
true );
mv.visitVarInsn( ASTORE, 2 );
mv.visitVarInsn( ALOAD, 2 );
// fld Name
mv.visitLdcInsn( fld.resolveAlias() );
// this
mv.visitVarInsn( ALOAD, 0 );
// init expr
if ( fld.getInitExpr() != null ) {
mv.visitLdcInsn( fld.getInitExpr() );
} else {
mv.visitInsn( ACONST_NULL );
}
// fld type
if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
// mv.visitFieldInsn( GETSTATIC, BuildUtils.getInternalType( BuildUtils.box( fld.getTypeName() ) ), "TYPE", Type.getDescriptor( Class.class ) );
mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fld.getTypeName() ) ) ) );
} else {
mv.visitLdcInsn( Type.getType( Type.getDescriptor( fld.getType() ) ) );
}
mv.visitVarInsn( ILOAD, 1 );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitFieldTMS.class ),
"donField",
Type.getMethodDescriptor( Type.getType( Object.class ),
Type.getType( String.class ),
Type.getType( TraitType.class ),
Type.getType( String.class ),
Type.getType( Class.class ),
Type.BOOLEAN_TYPE ),
true );
mv.visitVarInsn( ASTORE, j );
mv.visitVarInsn( ALOAD, 0 );
mv.visitVarInsn( ALOAD, j );
fixPrimitive( mv, fld, j );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( proxyName ),
BuildUtils.setterName( fld.getName(), fld.getTypeName() ),
"(" + BuildUtils.getTypeDescriptor( fld.getTypeName() ) + ")" + Type.getDescriptor( void.class ),
false );
}
protected void synchField( MethodVisitor mv, FieldDefinition fld, String proxyName ) {
mv.visitVarInsn( ALOAD, 0 );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( proxyName ),
BuildUtils.getterName( fld.getName(), fld.getTypeName() ),
"()" + BuildUtils.getTypeDescriptor( fld.getTypeName() ),
false );
Label l0 = null;
if ( ! BuildUtils.isPrimitive( fld.getTypeName() ) ) {
l0 = new Label();
mv.visitJumpInsn( IFNONNULL, l0 );
}
mv.visitVarInsn( ALOAD, 0 );
mv.visitLdcInsn( fld.getInitExpr() );
if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
mv.visitFieldInsn( GETSTATIC, BuildUtils.getInternalType( BuildUtils.box( fld.getTypeName() ) ), "TYPE", Type.getDescriptor( Class.class ) );
} else {
mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( fld.getTypeName() ) ) );
}
mv.visitMethodInsn( INVOKESTATIC,
Type.getInternalName( MVEL.class ),
"eval",
Type.getMethodDescriptor( Type.getType( Object.class ), Type.getType( String.class ), Type.getType( Class.class ) ),
false );
if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( BuildUtils.box( fld.getTypeName() ) ) );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( BuildUtils.box( fld.getTypeName() ) ),
BuildUtils.numericMorph( BuildUtils.box( fld.getTypeName() ) ),
"()" + BuildUtils.getTypeDescriptor( fld.getTypeName() ),
false );
} else {
mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( fld.getTypeName() ) );
}
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( proxyName ),
BuildUtils.setterName( fld.getName(), fld.getTypeName() ),
"(" + BuildUtils.getTypeDescriptor( fld.getTypeName() ) + ")" + Type.getDescriptor( void.class ),
false );
if ( ! BuildUtils.isPrimitive( fld.getTypeName() ) ) {
mv.visitLabel( l0 );
}
}
protected void buildSynchFields( ClassWriter cw, String proxyName, ClassDefinition trait, ClassDefinition core ) {
{
MethodVisitor mv = cw.visitMethod( ACC_PRIVATE, "synchFields", Type.getMethodDescriptor( Type.VOID_TYPE, Type.BOOLEAN_TYPE ), null, null );
mv.visitCode();
if ( core.isFullTraiting() ) {
Iterator iter = trait.getFieldsDefinitions().iterator();
for ( int j = 0; j < trait.getFieldsDefinitions().size(); j++ ) {
FieldDefinition fld = iter.next();
//boolean hardField = ! TraitRegistry.isSoftField( fld, j, mask );
synchFieldLogical( mv, fld, proxyName, core, j + 3 );
}
} else {
for ( FieldDefinition fld : trait.getFieldsDefinitions() ) {
if ( fld.getInitExpr() != null ) {
synchField( mv, fld, proxyName );
}
}
}
mv.visitInsn( RETURN );
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
}
protected void logicalSetter( MethodVisitor mv, FieldDefinition field, String masterName, ClassDefinition core ) {
String fieldType = field.getTypeName();
int reg = 1 + BuildUtils.sizeOf( fieldType );
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( masterName ), "object", Type.getDescriptor( core.getDefinedClass() ) );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitableBean.class ),
"_getFieldTMS",
Type.getMethodDescriptor( Type.getType( TraitFieldTMS.class ) ),
true );
mv.visitVarInsn( ASTORE, reg );
mv.visitVarInsn( ALOAD, reg );
mv.visitLdcInsn( field.resolveAlias() );
if ( BuildUtils.isPrimitive( fieldType ) ) {
mv.visitVarInsn( BuildUtils.varType( fieldType ), 1 );
mv.visitMethodInsn( Opcodes.INVOKESTATIC,
BuildUtils.getInternalType( BuildUtils.box( fieldType ) ),
"valueOf",
Type.getMethodDescriptor( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fieldType ) ) ), Type.getType( BuildUtils.getTypeDescriptor( fieldType ) ) ),
false );
} else {
mv.visitVarInsn( ALOAD, 1 );
}
if ( BuildUtils.isPrimitive( fieldType ) ) {
// mv.visitFieldInsn( GETSTATIC, BuildUtils.getInternalType( BuildUtils.box( fieldType ) ), "TYPE", Type.getDescriptor( Class.class ) );
mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( field.getTypeName() ) ) ) );
} else {
mv.visitLdcInsn( Type.getType( Type.getDescriptor( field.getType() ) ) );
}
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitFieldTMS.class ),
"set",
Type.getMethodDescriptor( Type.getType( Object.class ),
Type.getType( String.class ),
Type.getType( Object.class ),
Type.getType( Class.class ) ),
true );
mv.visitVarInsn( ASTORE, 1 );
mv.visitVarInsn( ALOAD, 1 );
if ( BuildUtils.isPrimitive( fieldType ) ) {
Label l0 = new Label();
mv.visitJumpInsn( IFNULL, l0 );
mv.visitVarInsn( ALOAD, 1 );
Label l1 = new Label();
mv.visitJumpInsn( GOTO, l1 );
mv.visitLabel( l0 );
mv.visitInsn( BuildUtils.zero( fieldType ) );
mv.visitMethodInsn( Opcodes.INVOKESTATIC,
BuildUtils.getInternalType( BuildUtils.box( fieldType ) ),
"valueOf",
Type.getMethodDescriptor( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fieldType ) ) ), Type.getType( BuildUtils.getTypeDescriptor( fieldType ) ) ),
false );
mv.visitLabel( l1 );
mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( BuildUtils.box( fieldType ) ) );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( BuildUtils.box( fieldType ) ),
BuildUtils.numericMorph( BuildUtils.box( fieldType ) ),
Type.getMethodDescriptor( Type.getType( field.getType() ) ),
false );
mv.visitVarInsn( BuildUtils.storeType( fieldType ), 1 );
}
}
protected void buildLogicalGetter( ClassVisitor cw, FieldDefinition field, String proxy, ClassDefinition core ) {
String fieldName = field.getName();
String fieldType = field.getTypeName();
String getter = BuildUtils.getterName( fieldName, fieldType );
MethodVisitor mv = cw.visitMethod( ACC_PUBLIC, getter, "()" + BuildUtils.getTypeDescriptor( fieldType ), null, null );
mv.visitCode();
mv.visitVarInsn( ALOAD, 0 );
mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxy ), "object", Type.getDescriptor( core.getDefinedClass() ) );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitableBean.class ),
"_getFieldTMS",
Type.getMethodDescriptor( Type.getType( TraitFieldTMS.class ) ),
true );
mv.visitLdcInsn( field.resolveAlias() );
if ( BuildUtils.isPrimitive( fieldType ) ) {
// mv.visitFieldInsn( GETSTATIC, BuildUtils.getInternalType( BuildUtils.box( fieldType ) ), "TYPE", Type.getDescriptor( Class.class ) );
mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( field.getTypeName() ) ) ) );
} else {
mv.visitLdcInsn( Type.getType( Type.getDescriptor( field.getType() ) ) );
}
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitFieldTMS.class ),
"get",
Type.getMethodDescriptor( Type.getType( Object.class ), Type.getType( String.class ), Type.getType( Class.class ) ),
true );
mv.visitVarInsn( ASTORE, 1 );
mv.visitVarInsn( ALOAD, 1 );
if ( BuildUtils.isPrimitive( fieldType ) ) {
Label l0 = new Label();
mv.visitJumpInsn( IFNULL, l0 );
mv.visitVarInsn( ALOAD, 1 );
Label l1 = new Label();
mv.visitJumpInsn( GOTO, l1 );
mv.visitLabel( l0 );
mv.visitInsn( BuildUtils.zero( fieldType ) );
mv.visitMethodInsn( Opcodes.INVOKESTATIC,
BuildUtils.getInternalType( BuildUtils.box( fieldType ) ),
"valueOf",
Type.getMethodDescriptor( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fieldType ) ) ), Type.getType( BuildUtils.getTypeDescriptor( fieldType ) ) ),
false );
mv.visitLabel( l1 );
mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( BuildUtils.box( fieldType ) ) );
mv.visitMethodInsn( INVOKEVIRTUAL,
BuildUtils.getInternalType( BuildUtils.box( fieldType ) ),
BuildUtils.numericMorph( BuildUtils.box( fieldType ) ),
Type.getMethodDescriptor( Type.getType( field.getType() ) ),
false );
mv.visitInsn( BuildUtils.returnType( fieldType ) );
} else {
mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( fieldType ) );
mv.visitInsn( ARETURN );
}
mv.visitMaxs( 0, 0 );
mv.visitEnd();
}
public void helpSet( ClassDefinition core, FieldDefinition field, MethodVisitor mv, String masterName ) {
// The trait field update will be done by the core setter. However, types may mismatch here
FieldDefinition hardField = core.getFieldByAlias( field.resolveAlias() );
boolean isHardField = field.getTypeName().equals( hardField.getTypeName() );
if ( ! field.getType().isPrimitive() && ! isHardField ) {
boolean isCoreTrait = hardField.getType().getAnnotation( Trait.class ) != null;
boolean isTraitTrait = field.getType().getAnnotation( Trait.class ) != null;
Label l0 = new Label();
mv.visitVarInsn( ALOAD, 1 );
mv.visitJumpInsn( IFNULL, l0 );
if ( isCoreTrait && ! isTraitTrait ) {
mv.visitVarInsn( ALOAD, 1 );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitLdcInsn( hardField.getTypeName() );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitableBean.class ),
"getTrait",
Type.getMethodDescriptor( Type.getType( Thing.class ), Type.getType( String.class ) ),
true );
mv.visitVarInsn( ASTORE, 1 );
} else if ( ! isCoreTrait && isTraitTrait ) {
mv.visitVarInsn( ALOAD, 1 );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitProxy.class ) );
mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitProxy.class ), "getObject", Type.getMethodDescriptor( Type.getType( TraitableBean.class ) ), false );
mv.visitVarInsn( ASTORE, 1 );
} else if ( isCoreTrait ) {
mv.visitVarInsn( ALOAD, 1 );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitProxy.class ) );
mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitProxy.class ), "getObject", Type.getMethodDescriptor( Type.getType( TraitableBean.class ) ), false );
mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
mv.visitLdcInsn( hardField.getTypeName() );
mv.visitMethodInsn( INVOKEINTERFACE,
Type.getInternalName( TraitableBean.class ),
"getTrait",
Type.getMethodDescriptor( Type.getType( Thing.class ), Type.getType( String.class ) ),
true );
mv.visitVarInsn( ASTORE, 1 );
} else {
// handled by normal inheritance, exceptions should have been thrown
if ( ! hardField.getType().isAssignableFrom( field.getType() ) ) {
mv.visitInsn( RETURN );
}
}
Label l1 = new Label();
mv.visitJumpInsn(GOTO, l1);
mv.visitLabel( l0 );
mv.visitInsn( ACONST_NULL );
mv.visitVarInsn( ASTORE, 1 );
mv.visitLabel( l1 );
} else if ( field.getType().isPrimitive() ) {
if ( ! hardField.getType().equals( field.getType() ) ) {
mv.visitInsn( RETURN );
}
}
if ( isHardField && CoreWrapper.class.isAssignableFrom( core.getDefinedClass() ) ) {
logicalSetter( mv, field, masterName, core );
}
}
public void buildKeyedEqualityMethods( ClassVisitor cw, ClassDefinition trait, String proxy ) {
String proxyType = BuildUtils.getInternalType( proxy );
buildKeyedEquals( cw, trait, proxyType );
buildKeyedHashCode( cw, trait, proxyType );
}
protected abstract void buildKeyedHashCode( ClassVisitor cw, ClassDefinition trait, String proxyType );
protected abstract void buildKeyedEquals( ClassVisitor cw, ClassDefinition trait, String proxyType );
public void buildEqualityMethods( ClassVisitor cw, String proxy, String core ) {
// Implemented in subclasses
assert cw != null;
assert proxy != null;
assert core != null;
}
protected Class getPossibleConstructor( Class klass, Class arg ) throws NoSuchMethodException {
Constructor[] ctors = klass.getConstructors();
for ( Constructor c : ctors ) {
Class[] cpars = c.getParameterTypes();
if ( cpars.length != 1 || ! cpars[0].isAssignableFrom( arg ) ) {
continue;
}
return cpars[0];
}
throw new NoSuchMethodException( "Constructor for " + klass + " using " + arg + " not found " );
}
}
