1 /*
2 * reserved comment block
3 * DO NOT REMOVE OR ALTER!
4 */
5 /*
6 * Copyright 2001-2004 The Apache Software Foundation.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 /*
21 * $Id: CallTemplate.java,v 1.2.4.1 2005/09/12 10:02:41 pvedula Exp $
22 */
23
24 package com.sun.org.apache.xalan.internal.xsltc.compiler;
25
26 import com.sun.org.apache.bcel.internal.generic.ALOAD;
27 import com.sun.org.apache.bcel.internal.generic.ASTORE;
28 import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
29 import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
30 import com.sun.org.apache.bcel.internal.generic.InstructionList;
31 import com.sun.org.apache.bcel.internal.generic.LocalVariableGen;
32 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
33 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
34 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
35 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
36 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
37 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
38 import com.sun.org.apache.xml.internal.utils.XML11Char;
39
40 import java.util.Vector;
41
42 /**
43 * @author Jacek Ambroziak
44 * @author Santiago Pericas-Geertsen
45 * @author Erwin Bolwidt <ejb@klomp.org>
46 */
47 final class CallTemplate extends Instruction {
48
49 /**
50 * Name of template to call.
51 */
52 private QName _name;
53
54 /**
55 * The array of effective parameters in this CallTemplate. An object in
56 * this array can be either a WithParam or a Param if no WithParam
57 * exists for a particular parameter.
58 */
59 private Object[] _parameters = null;
60
61 /**
62 * The corresponding template which this CallTemplate calls.
63 */
64 private Template _calleeTemplate = null;
65
66 public void display(int indent) {
67 indent(indent);
68 System.out.print("CallTemplate");
69 Util.println(" name " + _name);
70 displayContents(indent + IndentIncrement);
71 }
72
73 public boolean hasWithParams() {
74 return elementCount() > 0;
75 }
76
77 public void parseContents(Parser parser) {
78 final String name = getAttribute("name");
79 if (name.length() > 0) {
130 }
131 }
132
133 // Generate a valid Java method name
134 final String className = stylesheet.getClassName();
135 String methodName = Util.escape(_name.toString());
136
137 // Load standard arguments
138 il.append(classGen.loadTranslet());
139 il.append(methodGen.loadDOM());
140 il.append(methodGen.loadIterator());
141 il.append(methodGen.loadHandler());
142 il.append(methodGen.loadCurrentNode());
143
144 // Initialize prefix of method signature
145 StringBuffer methodSig = new StringBuffer("(" + DOM_INTF_SIG
146 + NODE_ITERATOR_SIG + TRANSLET_OUTPUT_SIG + NODE_SIG);
147
148 // If calling a simply named template, push actual arguments
149 if (_calleeTemplate != null) {
150 Vector calleeParams = _calleeTemplate.getParameters();
151 int numParams = _parameters.length;
152
153 for (int i = 0; i < numParams; i++) {
154 SyntaxTreeNode node = (SyntaxTreeNode)_parameters[i];
155 methodSig.append(OBJECT_SIG); // append Object to signature
156
157 // Push 'null' if Param to indicate no actual parameter specified
158 if (node instanceof Param) {
159 il.append(ACONST_NULL);
160 }
161 else { // translate WithParam
162 node.translate(classGen, methodGen);
163 }
164 }
165 }
166
167 // Complete signature and generate invokevirtual call
168 methodSig.append(")V");
169 il.append(new INVOKEVIRTUAL(cpg.addMethodref(className,
170 methodName,
171 methodSig.toString())));
172
173 // Do not need to call Translet.popParamFrame() if we are
174 // calling a simple named template.
175 if (_calleeTemplate == null && (stylesheet.hasLocalParams() || hasContents())) {
176 // Pop parameter frame
177 final int pop = cpg.addMethodref(TRANSLET_CLASS,
178 POP_PARAM_FRAME,
179 POP_PARAM_FRAME_SIG);
180 il.append(classGen.loadTranslet());
181 il.append(new INVOKEVIRTUAL(pop));
182 }
183 }
184
185 /**
186 * Return the simple named template which this CallTemplate calls.
187 * Return false if there is no matched template or the matched
188 * template is not a simple named template.
189 */
190 public Template getCalleeTemplate() {
191 Template foundTemplate
192 = getXSLTC().getParser().getSymbolTable().lookupTemplate(_name);
193
194 return foundTemplate.isSimpleNamedTemplate() ? foundTemplate : null;
195 }
196
197 /**
198 * Build the list of effective parameters in this CallTemplate.
199 * The parameters of the called template are put into the array first.
200 * Then we visit the WithParam children of this CallTemplate and replace
201 * the Param with a corresponding WithParam having the same name.
202 */
203 private void buildParameterList() {
204 // Put the parameters from the called template into the array first.
205 // This is to ensure the order of the parameters.
206 Vector defaultParams = _calleeTemplate.getParameters();
207 int numParams = defaultParams.size();
208 _parameters = new Object[numParams];
209 for (int i = 0; i < numParams; i++) {
210 _parameters[i] = defaultParams.elementAt(i);
211 }
212
213 // Replace a Param with a WithParam if they have the same name.
214 int count = elementCount();
215 for (int i = 0; i < count; i++) {
216 Object node = elementAt(i);
217
218 // Ignore if not WithParam
219 if (node instanceof WithParam) {
220 WithParam withParam = (WithParam)node;
221 QName name = withParam.getName();
222
223 // Search for a Param with the same name
224 for (int k = 0; k < numParams; k++) {
225 Object object = _parameters[k];
226 if (object instanceof Param
227 && ((Param)object).getName().equals(name)) {
228 withParam.setDoParameterOptimization(true);
229 _parameters[k] = withParam;
230 break;
231 }
232 else if (object instanceof WithParam
233 && ((WithParam)object).getName().equals(name)) {
234 withParam.setDoParameterOptimization(true);
235 _parameters[k] = withParam;
236 break;
237 }
238 }
239 }
240 }
241 }
242 }
|
1 /*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 */
4 /*
5 * Copyright 2001-2004 The Apache Software Foundation.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19
20 package com.sun.org.apache.xalan.internal.xsltc.compiler;
21
22 import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
23 import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
24 import com.sun.org.apache.bcel.internal.generic.InstructionList;
25 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
26 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
27 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
28 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
31 import com.sun.org.apache.xml.internal.utils.XML11Char;
32
33 import java.util.Vector;
34
35 /**
36 * @author Jacek Ambroziak
37 * @author Santiago Pericas-Geertsen
38 * @author Erwin Bolwidt <ejb@klomp.org>
39 */
40 final class CallTemplate extends Instruction {
41
42 /**
43 * Name of template to call.
44 */
45 private QName _name;
46
47 /**
48 * The array of effective parameters in this CallTemplate. An object in
49 * this array can be either a WithParam or a Param if no WithParam
50 * exists for a particular parameter.
51 */
52 private SyntaxTreeNode[] _parameters = null;
53
54 /**
55 * The corresponding template which this CallTemplate calls.
56 */
57 private Template _calleeTemplate = null;
58
59 public void display(int indent) {
60 indent(indent);
61 System.out.print("CallTemplate");
62 Util.println(" name " + _name);
63 displayContents(indent + IndentIncrement);
64 }
65
66 public boolean hasWithParams() {
67 return elementCount() > 0;
68 }
69
70 public void parseContents(Parser parser) {
71 final String name = getAttribute("name");
72 if (name.length() > 0) {
123 }
124 }
125
126 // Generate a valid Java method name
127 final String className = stylesheet.getClassName();
128 String methodName = Util.escape(_name.toString());
129
130 // Load standard arguments
131 il.append(classGen.loadTranslet());
132 il.append(methodGen.loadDOM());
133 il.append(methodGen.loadIterator());
134 il.append(methodGen.loadHandler());
135 il.append(methodGen.loadCurrentNode());
136
137 // Initialize prefix of method signature
138 StringBuffer methodSig = new StringBuffer("(" + DOM_INTF_SIG
139 + NODE_ITERATOR_SIG + TRANSLET_OUTPUT_SIG + NODE_SIG);
140
141 // If calling a simply named template, push actual arguments
142 if (_calleeTemplate != null) {
143 int numParams = _parameters.length;
144
145 for (int i = 0; i < numParams; i++) {
146 SyntaxTreeNode node = _parameters[i];
147 methodSig.append(OBJECT_SIG); // append Object to signature
148
149 // Push 'null' if Param to indicate no actual parameter specified
150 if (node instanceof Param) {
151 il.append(ACONST_NULL);
152 }
153 else { // translate WithParam
154 node.translate(classGen, methodGen);
155 }
156 }
157 }
158
159 // Complete signature and generate invokevirtual call
160 methodSig.append(")V");
161 il.append(new INVOKEVIRTUAL(cpg.addMethodref(className,
162 methodName,
163 methodSig.toString())));
164
165 // release temporary result trees
166 if (_parameters != null) {
167 for (int i = 0; i < _parameters.length; i++) {
168 if (_parameters[i] instanceof WithParam) {
169 ((WithParam)_parameters[i]).releaseResultTree(classGen, methodGen);
170 }
171 }
172 }
173
174 // Do not need to call Translet.popParamFrame() if we are
175 // calling a simple named template.
176 if (_calleeTemplate == null && (stylesheet.hasLocalParams() || hasContents())) {
177 // Pop parameter frame
178 final int pop = cpg.addMethodref(TRANSLET_CLASS,
179 POP_PARAM_FRAME,
180 POP_PARAM_FRAME_SIG);
181 il.append(classGen.loadTranslet());
182 il.append(new INVOKEVIRTUAL(pop));
183 }
184 }
185
186 /**
187 * Return the simple named template which this CallTemplate calls.
188 * Return false if there is no matched template or the matched
189 * template is not a simple named template.
190 */
191 public Template getCalleeTemplate() {
192 Template foundTemplate
193 = getXSLTC().getParser().getSymbolTable().lookupTemplate(_name);
194
195 return foundTemplate.isSimpleNamedTemplate() ? foundTemplate : null;
196 }
197
198 /**
199 * Build the list of effective parameters in this CallTemplate.
200 * The parameters of the called template are put into the array first.
201 * Then we visit the WithParam children of this CallTemplate and replace
202 * the Param with a corresponding WithParam having the same name.
203 */
204 private void buildParameterList() {
205 // Put the parameters from the called template into the array first.
206 // This is to ensure the order of the parameters.
207 Vector<Param> defaultParams = _calleeTemplate.getParameters();
208 int numParams = defaultParams.size();
209 _parameters = new SyntaxTreeNode[numParams];
210 for (int i = 0; i < numParams; i++) {
211 _parameters[i] = defaultParams.elementAt(i);
212 }
213
214 // Replace a Param with a WithParam if they have the same name.
215 int count = elementCount();
216 for (int i = 0; i < count; i++) {
217 Object node = elementAt(i);
218
219 // Ignore if not WithParam
220 if (node instanceof WithParam) {
221 WithParam withParam = (WithParam)node;
222 QName name = withParam.getName();
223
224 // Search for a Param with the same name
225 for (int k = 0; k < numParams; k++) {
226 SyntaxTreeNode parm = _parameters[k];
227 if (parm instanceof Param
228 && ((Param)parm).getName().equals(name)) {
229 withParam.setDoParameterOptimization(true);
230 _parameters[k] = withParam;
231 break;
232 }
233 else if (parm instanceof WithParam
234 && ((WithParam)parm).getName().equals(name)) {
235 withParam.setDoParameterOptimization(true);
236 _parameters[k] = withParam;
237 break;
238 }
239 }
240 }
241 }
242 }
243 }
|