1 files changed, 81 insertions, 0 deletions
diff --git a/src/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/BooleanExpr.java b/src/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/BooleanExpr.java
new file mode 100644
index 0000000..27fe966
--- /dev/null
+++ b/src/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/BooleanExpr.java
@@ -0,0 +1,81 @@
+/*
+ * 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: BooleanExpr.java,v 1.2.4.1 2005/09/01 11:44:57 pvedula Exp $
+ */
+
+package com.sun.org.apache.xalan.internal.xsltc.compiler;
+
+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.InstructionList;
+import com.sun.org.apache.bcel.internal.generic.PUSH;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
+import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
+
+/**
+ * This class implements inlined calls to the XSLT standard functions
+ * true() and false().
+ * @author Jacek Ambroziak
+ * @author Santiago Pericas-Geertsen
+ */
+final class BooleanExpr extends Expression {
+    private boolean _value;
+
+    public BooleanExpr(boolean value) {
+        _value = value;
+    }
+
+    public Type typeCheck(SymbolTable stable) throws TypeCheckError {
+        _type = Type.Boolean;
+        return _type;
+    }
+
+    public String toString() {
+        return _value ? "true()" : "false()";
+    }
+
+    public boolean getValue() {
+        return _value;
+    }
+
+    public boolean contextDependent() {
+        return false;
+    }
+
+    public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
+        ConstantPoolGen cpg = classGen.getConstantPool();
+        InstructionList il = methodGen.getInstructionList();
+        il.append(new PUSH(cpg, _value));
+    }
+
+    public void translateDesynthesized(ClassGenerator classGen,
+                                       MethodGenerator methodGen) {
+        final InstructionList il = methodGen.getInstructionList();
+        if (_value) {
+            il.append(NOP);     // true list falls through
+        }
+        else {
+            _falseList.add(il.append(new GOTO(null)));
+        }
+    }
+}