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Diffstat (limited to 'src/com/sun/org/apache/xalan/internal/xsltc/compiler/FunctionAvailableCall.java')
-rw-r--r--src/com/sun/org/apache/xalan/internal/xsltc/compiler/FunctionAvailableCall.java196
1 files changed, 0 insertions, 196 deletions
diff --git a/src/com/sun/org/apache/xalan/internal/xsltc/compiler/FunctionAvailableCall.java b/src/com/sun/org/apache/xalan/internal/xsltc/compiler/FunctionAvailableCall.java
deleted file mode 100644
index 8cad427..0000000
--- a/src/com/sun/org/apache/xalan/internal/xsltc/compiler/FunctionAvailableCall.java
+++ /dev/null
@@ -1,196 +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: FunctionAvailableCall.java,v 1.2.4.1 2005/09/01 15:30:25 pvedula Exp $
- */
-
-package com.sun.org.apache.xalan.internal.xsltc.compiler;
-
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.Vector;
-
-import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
-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.ErrorMsg;
-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;
-import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
-import com.sun.org.apache.xalan.internal.utils.ObjectFactory;
-
-/**
- * @author G. Todd Miller
- * @author Santiago Pericas-Geertsen
- */
-final class FunctionAvailableCall extends FunctionCall {
-
- private Expression _arg;
- private String _nameOfFunct = null;
- private String _namespaceOfFunct = null;
- private boolean _isFunctionAvailable = false;
-
- /**
- * Constructs a FunctionAvailableCall FunctionCall. Takes the
- * function name qname, for example, 'function-available', and
- * a list of arguments where the arguments must be instances of
- * LiteralExpression.
- */
- public FunctionAvailableCall(QName fname, Vector arguments) {
- super(fname, arguments);
- _arg = (Expression)arguments.elementAt(0);
- _type = null;
-
- if (_arg instanceof LiteralExpr) {
- LiteralExpr arg = (LiteralExpr) _arg;
- _namespaceOfFunct = arg.getNamespace();
- _nameOfFunct = arg.getValue();
-
- if (!isInternalNamespace()) {
- _isFunctionAvailable = hasMethods();
- }
- }
- }
-
- /**
- * Argument of function-available call must be literal, typecheck
- * returns the type of function-available to be boolean.
- */
- public Type typeCheck(SymbolTable stable) throws TypeCheckError {
- if (_type != null) {
- return _type;
- }
- if (_arg instanceof LiteralExpr) {
- return _type = Type.Boolean;
- }
- ErrorMsg err = new ErrorMsg(ErrorMsg.NEED_LITERAL_ERR,
- "function-available", this);
- throw new TypeCheckError(err);
- }
-
- /**
- * Returns an object representing the compile-time evaluation
- * of an expression. We are only using this for function-available
- * and element-available at this time.
- */
- public Object evaluateAtCompileTime() {
- return getResult() ? Boolean.TRUE : Boolean.FALSE;
- }
-
- /**
- * for external java functions only: reports on whether or not
- * the specified method is found in the specifed class.
- */
- private boolean hasMethods() {
- LiteralExpr arg = (LiteralExpr)_arg;
-
- // Get the class name from the namespace uri
- String className = getClassNameFromUri(_namespaceOfFunct);
-
- // Get the method name from the argument to function-available
- String methodName = null;
- int colonIndex = _nameOfFunct.indexOf(":");
- if (colonIndex > 0) {
- String functionName = _nameOfFunct.substring(colonIndex+1);
- int lastDotIndex = functionName.lastIndexOf('.');
- if (lastDotIndex > 0) {
- methodName = functionName.substring(lastDotIndex+1);
- if (className != null && !className.equals(""))
- className = className + "." + functionName.substring(0, lastDotIndex);
- else
- className = functionName.substring(0, lastDotIndex);
- }
- else
- methodName = functionName;
- }
- else
- methodName = _nameOfFunct;
-
- if (className == null || methodName == null) {
- return false;
- }
-
- // Replace the '-' characters in the method name
- if (methodName.indexOf('-') > 0)
- methodName = replaceDash(methodName);
-
- try {
- final Class clazz = ObjectFactory.findProviderClass(className, true);
-
- if (clazz == null) {
- return false;
- }
-
- final Method[] methods = clazz.getMethods();
-
- for (int i = 0; i < methods.length; i++) {
- final int mods = methods[i].getModifiers();
-
- if (Modifier.isPublic(mods) && Modifier.isStatic(mods)
- && methods[i].getName().equals(methodName))
- {
- return true;
- }
- }
- }
- catch (ClassNotFoundException e) {
- return false;
- }
- return false;
- }
-
- /**
- * Reports on whether the function specified in the argument to
- * xslt function 'function-available' was found.
- */
- public boolean getResult() {
- if (_nameOfFunct == null) {
- return false;
- }
-
- if (isInternalNamespace()) {
- final Parser parser = getParser();
- _isFunctionAvailable =
- parser.functionSupported(Util.getLocalName(_nameOfFunct));
- }
- return _isFunctionAvailable;
- }
-
- /**
- * Return true if the namespace uri is null or it is the XSLTC translet uri.
- */
- private boolean isInternalNamespace() {
- return (_namespaceOfFunct == null ||
- _namespaceOfFunct.equals(EMPTYSTRING) ||
- _namespaceOfFunct.equals(TRANSLET_URI));
- }
-
- /**
- * Calls to 'function-available' are resolved at compile time since
- * the namespaces declared in the stylsheet are not available at run
- * time. Consequently, arguments to this function must be literals.
- */
- public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
- final ConstantPoolGen cpg = classGen.getConstantPool();
- methodGen.getInstructionList().append(new PUSH(cpg, getResult()));
- }
-
-}