diff options
Diffstat (limited to 'src/com/sun/org/apache/xalan/internal/xsltc/compiler/util/BooleanType.java')
| -rw-r--r-- | src/com/sun/org/apache/xalan/internal/xsltc/compiler/util/BooleanType.java | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/src/com/sun/org/apache/xalan/internal/xsltc/compiler/util/BooleanType.java b/src/com/sun/org/apache/xalan/internal/xsltc/compiler/util/BooleanType.java deleted file mode 100644 index 1feca89..0000000 --- a/src/com/sun/org/apache/xalan/internal/xsltc/compiler/util/BooleanType.java +++ /dev/null @@ -1,225 +0,0 @@ -/* - * reserved comment block - * DO NOT REMOVE OR ALTER! - */ -/* - * Copyright 2001-2004 The Apache Software Foundation. - * - * 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. - */ -/* - * $Id: BooleanType.java,v 1.2.4.1 2005/09/05 11:03:37 pvedula Exp $ - */ - -package com.sun.org.apache.xalan.internal.xsltc.compiler.util; - -import com.sun.org.apache.bcel.internal.generic.BranchHandle; -import com.sun.org.apache.bcel.internal.generic.BranchInstruction; -import com.sun.org.apache.bcel.internal.generic.CHECKCAST; -import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen; -import com.sun.org.apache.bcel.internal.generic.GOTO; -import com.sun.org.apache.bcel.internal.generic.IFEQ; -import com.sun.org.apache.bcel.internal.generic.IFGE; -import com.sun.org.apache.bcel.internal.generic.IFGT; -import com.sun.org.apache.bcel.internal.generic.IFLE; -import com.sun.org.apache.bcel.internal.generic.IFLT; -import com.sun.org.apache.bcel.internal.generic.IF_ICMPGE; -import com.sun.org.apache.bcel.internal.generic.IF_ICMPGT; -import com.sun.org.apache.bcel.internal.generic.IF_ICMPLE; -import com.sun.org.apache.bcel.internal.generic.IF_ICMPLT; -import com.sun.org.apache.bcel.internal.generic.ILOAD; -import com.sun.org.apache.bcel.internal.generic.INVOKESPECIAL; -import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL; -import com.sun.org.apache.bcel.internal.generic.ISTORE; -import com.sun.org.apache.bcel.internal.generic.Instruction; -import com.sun.org.apache.bcel.internal.generic.InstructionList; -import com.sun.org.apache.bcel.internal.generic.NEW; -import com.sun.org.apache.bcel.internal.generic.PUSH; -import com.sun.org.apache.xalan.internal.xsltc.compiler.Constants; - -/** - * @author Jacek Ambroziak - * @author Santiago Pericas-Geertsen - */ -public final class BooleanType extends Type { - protected BooleanType() {} - - public String toString() { - return "boolean"; - } - - public boolean identicalTo(Type other) { - return this == other; - } - - public String toSignature() { - return "Z"; - } - - public boolean isSimple() { - return true; - } - - public com.sun.org.apache.bcel.internal.generic.Type toJCType() { - return com.sun.org.apache.bcel.internal.generic.Type.BOOLEAN; - } - - /** - * Translates a real into an object of internal type <code>type</code>. The - * translation to int is undefined since booleans are always converted to - * reals in arithmetic expressions. - * - * @see com.sun.org.apache.xalan.internal.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.Real) { - translateTo(classGen, methodGen, (RealType) type); - } - else if (type == Type.Reference) { - translateTo(classGen, methodGen, (ReferenceType) type); - } - else { - ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR, - toString(), type.toString()); - classGen.getParser().reportError(Constants.FATAL, err); - } - } - - /** - * Expects a boolean on the stack and pushes a string. If the value on the - * stack is zero, then the string 'false' is pushed. Otherwise, the string - * 'true' is pushed. - * - * @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo - */ - public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, - StringType type) { - final ConstantPoolGen cpg = classGen.getConstantPool(); - final InstructionList il = methodGen.getInstructionList(); - final BranchHandle falsec = il.append(new IFEQ(null)); - il.append(new PUSH(cpg, "true")); - final BranchHandle truec = il.append(new GOTO(null)); - falsec.setTarget(il.append(new PUSH(cpg, "false"))); - truec.setTarget(il.append(NOP)); - } - - /** - * Expects a boolean on the stack and pushes a real. The value "true" is - * converted to 1.0 and the value "false" to 0.0. - * - * @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo - */ - public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, - RealType type) { - methodGen.getInstructionList().append(I2D); - } - - /** - * Expects a boolean on the stack and pushes a boxed boolean. - * Boxed booleans are represented by an instance of - * <code>java.lang.Boolean</code>. - * - * @see com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type#translateTo - */ - public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, - ReferenceType type) { - final ConstantPoolGen cpg = classGen.getConstantPool(); - final InstructionList il = methodGen.getInstructionList(); - il.append(new NEW(cpg.addClass(BOOLEAN_CLASS))); - il.append(DUP_X1); - il.append(SWAP); - il.append(new INVOKESPECIAL(cpg.addMethodref(BOOLEAN_CLASS, - "<init>", - "(Z)V"))); - } - - /** - * Translates an internal boolean into an external (Java) boolean. - */ - public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, - Class clazz) { - if (clazz == java.lang.Boolean.TYPE) { - methodGen.getInstructionList().append(NOP); - } - // Is Boolean <: clazz? I.e. clazz in { Boolean, Object } - else if (clazz.isAssignableFrom(java.lang.Boolean.class)) { - translateTo(classGen, methodGen, Type.Reference); - } - else { - ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR, - toString(), clazz.getName()); - classGen.getParser().reportError(Constants.FATAL, err); - } - } - - /** - * Translates an external (Java) boolean into internal boolean. - */ - public void translateFrom(ClassGenerator classGen, MethodGenerator methodGen, - Class clazz) { - translateTo(classGen, methodGen, clazz); - } - - /** - * 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) { - final ConstantPoolGen cpg = classGen.getConstantPool(); - final InstructionList il = methodGen.getInstructionList(); - il.append(new CHECKCAST(cpg.addClass(BOOLEAN_CLASS))); - il.append(new INVOKEVIRTUAL(cpg.addMethodref(BOOLEAN_CLASS, - BOOLEAN_VALUE, - BOOLEAN_VALUE_SIG))); - } - - public Instruction LOAD(int slot) { - return new ILOAD(slot); - } - - public Instruction STORE(int slot) { - return new ISTORE(slot); - } - - public BranchInstruction GT(boolean tozero) { - return tozero ? (BranchInstruction) new IFGT(null) : - (BranchInstruction) new IF_ICMPGT(null); - } - - public BranchInstruction GE(boolean tozero) { - return tozero ? (BranchInstruction) new IFGE(null) : - (BranchInstruction) new IF_ICMPGE(null); - } - - public BranchInstruction LT(boolean tozero) { - return tozero ? (BranchInstruction) new IFLT(null) : - (BranchInstruction) new IF_ICMPLT(null); - } - - public BranchInstruction LE(boolean tozero) { - return tozero ? (BranchInstruction) new IFLE(null) : - (BranchInstruction) new IF_ICMPLE(null); - } -} |