morten 01/06/18 02:30:13
Modified: java/src/org/apache/xalan/xsltc/compiler/util Type.java
Added: java/src/org/apache/xalan/xsltc/compiler/util
NodeSetDTMType.java
Log:
Revision Changes Path
1.4 +2 -2
xml-xalan/java/src/org/apache/xalan/xsltc/compiler/util/Type.java
Index: Type.java
===================================================================
RCS file:
/home/cvs/xml-xalan/java/src/org/apache/xalan/xsltc/compiler/util/Type.java,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- Type.java 2001/06/17 12:23:35 1.3
+++ Type.java 2001/06/18 09:30:11 1.4
@@ -1,5 +1,5 @@
/*
- * @(#)$Id: Type.java,v 1.3 2001/06/17 12:23:35 curcuru Exp $
+ * @(#)$Id: Type.java,v 1.4 2001/06/18 09:30:11 morten Exp $
*
* The Apache Software License, Version 1.1
*
@@ -74,7 +74,7 @@
public static final Type Int = new IntType();
public static final Type Real = new RealType();
public static final Type Boolean = new BooleanType();
- public static final Type NodeSet = new NodeSetType();
+ public static final Type NodeSetDTM = new NodeSetDTMType();
public static final Type String = new StringType();
public static final Type ResultTree = new ResultTreeType();
public static final Type Reference = new ReferenceType();
1.1
xml-xalan/java/src/org/apache/xalan/xsltc/compiler/util/NodeSetDTMType.java
Index: NodeSetDTMType.java
===================================================================
/*
* @(#)$Id: NodeSetDTMType.java,v 1.1 2001/06/18 09:30:11 morten Exp $
*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2001, Sun
* Microsystems., http://www.sun.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
*
*/
package org.apache.xalan.xsltc.compiler.util;
import org.apache.xalan.xsltc.compiler.util.Type;
import de.fub.bytecode.generic.*;
import org.apache.xalan.xsltc.compiler.Parser;
import org.apache.xalan.xsltc.compiler.FlowList;
public final class NodeSetDTMType extends Type {
protected NodeSetDTMType() {}
public String toString() {
return "node-set";
}
public boolean identicalTo(Type other) {
return this == other;
}
public String toSignature() {
return NODE_ITERATOR_SIG;
}
public de.fub.bytecode.generic.Type toJCType() {
return new de.fub.bytecode.generic.ObjectType(NODE_ITERATOR);
}
/**
* Translates a node-set into an object of internal type
* <code>type</code>. The translation to int is undefined
* since node-sets are always converted to
* reals in arithmetic expressions.
*
* @see org.apache.xalan.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
Type type) {
if (type == Type.String) {
translateTo(classGen, methodGen, (StringType) type);
}
else if (type == Type.Boolean) {
translateTo(classGen, methodGen, (BooleanType) type);
}
else if (type == Type.Real) {
translateTo(classGen, methodGen, (RealType) type);
}
else if (type == Type.Node) {
translateTo(classGen, methodGen, (NodeType) type);
}
else if (type == Type.Reference) {
translateTo(classGen, methodGen, (ReferenceType) type);
}
else {
classGen.getParser().internalError(); // undefined
}
}
/**
* Translates a node-set into a synthesized boolean.
* The boolean value of a node-set is "true" if non-empty
* and "false" otherwise. Notice that the
* function getFirstNode() is called in translateToDesynthesized().
*
* @see org.apache.xalan.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
BooleanType type) {
final InstructionList il = methodGen.getInstructionList();
FlowList falsel = translateToDesynthesized(classGen, methodGen, type);
il.append(ICONST_1);
final BranchHandle truec = il.append(new GOTO(null));
falsel.backPatch(il.append(ICONST_0));
truec.setTarget(il.append(NOP));
}
/**
* Translates a node-set into a string. The string value of a node-set is
* value of its first element.
*
* @see org.apache.xalan.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
StringType type) {
final InstructionList il = methodGen.getInstructionList();
getFirstNode(classGen, methodGen);
il.append(DUP);
final BranchHandle falsec = il.append(new IFEQ(null));
Type.Node.translateTo(classGen, methodGen, type);
final BranchHandle truec = il.append(new GOTO(null));
falsec.setTarget(il.append(POP));
il.append(new PUSH(classGen.getConstantPool(), ""));
truec.setTarget(il.append(NOP));
}
/**
* Expects a node-set on the stack and pushes a real.
* First the node-set is converted to string, and from string to real.
*
* @see org.apache.xalan.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
RealType type) {
translateTo(classGen, methodGen, Type.String);
Type.String.translateTo(classGen, methodGen, Type.Real);
}
/**
* Expects a node-set on the stack and pushes a node.
*
* @see org.apache.xalan.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
NodeType type) {
getFirstNode(classGen, methodGen);
}
/**
* Translates a node-set into a non-synthesized boolean. It does not
* push a 0 or a 1 but instead returns branchhandle list to be appended
* to the false list.
*
* @see
org.apache.xalan.xsltc.compiler.util.Type#translateToDesynthesized
*/
public FlowList translateToDesynthesized(ClassGenerator classGen,
MethodGenerator methodGen,
BooleanType type) {
final InstructionList il = methodGen.getInstructionList();
getFirstNode(classGen, methodGen);
return new FlowList(il.append(new IFEQ(null)));
}
/**
* Expects a node-set on the stack and pushes a boxed node-set.
* Node sets are already boxed so the translation is just a NOP.
*
* @see org.apache.xalan.xsltc.compiler.util.Type#translateTo
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
ReferenceType type) {
methodGen.getInstructionList().append(NOP);
}
/**
* Translates a node-set into the Java type denoted by
<code>clazz</code>.
* Expects a node-set on the stack and pushes an object of the appropriate
* type after coercion.
*/
public void translateTo(ClassGenerator classGen, MethodGenerator
methodGen,
Class clazz) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
final String DOM_CLASS = classGen.getDOMClass();
il.append(methodGen.loadDOM());
il.append(SWAP); // dom ref must be below node index
final String className = clazz.getName();
if (className.equals("org.w3c.dom.Node")) {
il.append(new INVOKEVIRTUAL(cpg.addMethodref(DOM_CLASS,
MAKE_NODE,
MAKE_NODE_SIG2)));
}
else if (className.equals("org.w3c.dom.NodeList")) {
final int mkList = cpg.addMethodref(DOM_CLASS,
MAKE_NODE_LIST,
MAKE_NODE_LIST_SIG2);
il.append(new INVOKEVIRTUAL(mkList));
}
else {
classGen.getParser().internalError(); // undefined
}
}
/**
* Some type conversions require gettting the first node from the
node-set.
* This function is defined to avoid code repetition.
*/
private void getFirstNode(ClassGenerator classGen, MethodGenerator
methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
il.append(new INVOKEINTERFACE(cpg.addInterfaceMethodref(NODE_ITERATOR,
NEXT,
NEXT_SIG), 1));
}
/**
* Translates an object of this type to its boxed representation.
*/
public void translateBox(ClassGenerator classGen,
MethodGenerator methodGen) {
translateTo(classGen, methodGen, Type.Reference);
}
/**
* Translates an object of this type to its unboxed representation.
*/
public void translateUnBox(ClassGenerator classGen,
MethodGenerator methodGen) {
methodGen.getInstructionList().append(NOP);
}
public Instruction LOAD(int slot) {
return new ALOAD(slot);
}
public Instruction STORE(int slot) {
return new ASTORE(slot);
}
}
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