Source Code Cross Referenced for CompileUnit.java in  » Scripting » groovy-1.0 » org » codehaus » groovy » ast » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » groovy 1.0 » org.codehaus.groovy.ast 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: CompileUnit.java 4295 2006-12-02 21:15:54Z blackdrag $
003:         * 
004:         * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005:         * 
006:         * Redistribution and use of this software and associated documentation
007:         * ("Software"), with or without modification, are permitted provided that the
008:         * following conditions are met:
009:         *  1. Redistributions of source code must retain copyright statements and
010:         * notices. Redistributions must also contain a copy of this document.
011:         *  2. Redistributions in binary form must reproduce the above copyright
012:         * notice, this list of conditions and the following disclaimer in the
013:         * documentation and/or other materials provided with the distribution.
014:         *  3. The name "groovy" must not be used to endorse or promote products
015:         * derived from this Software without prior written permission of The Codehaus.
016:         * For written permission, please contact info@codehaus.org.
017:         *  4. Products derived from this Software may not be called "groovy" nor may
018:         * "groovy" appear in their names without prior written permission of The
019:         * Codehaus. "groovy" is a registered trademark of The Codehaus.
020:         *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
021:         * 
022:         * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
023:         * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
024:         * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
025:         * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
026:         * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
027:         * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
028:         * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
029:         * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
030:         * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
031:         * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
032:         * DAMAGE.
033:         *  
034:         */
035:        package org.codehaus.groovy.ast;
036:
037:        import groovy.lang.GroovyClassLoader;
038:
039:        import java.security.CodeSource;
040:        import java.util.ArrayList;
041:        import java.util.HashMap;
042:        import java.util.Iterator;
043:        import java.util.List;
044:        import java.util.Map;
045:
046:        import org.codehaus.groovy.control.CompilerConfiguration;
047:        import org.codehaus.groovy.control.SourceUnit;
048:        import org.codehaus.groovy.control.messages.SyntaxErrorMessage;
049:        import org.codehaus.groovy.syntax.SyntaxException;
050:
051:        /**
052:         * Represents the entire contents of a compilation step which consists of one
053:         * or more {@link ModuleNode}instances
054:         * 
055:         * @author <a href="mailto:james@coredevelopers.net">James Strachan </a>
056:         * @version $Revision: 4295 $
057:         */
058:        public class CompileUnit {
059:
060:            private List modules = new ArrayList();
061:            private Map classes = new HashMap();
062:            private CompilerConfiguration config;
063:            private GroovyClassLoader classLoader;
064:            private CodeSource codeSource;
065:            private Map classesToCompile = new HashMap();
066:            private Map classNameToSource = new HashMap();
067:
068:            public CompileUnit(GroovyClassLoader classLoader,
069:                    CompilerConfiguration config) {
070:                this (classLoader, null, config);
071:            }
072:
073:            public CompileUnit(GroovyClassLoader classLoader,
074:                    CodeSource codeSource, CompilerConfiguration config) {
075:                this .classLoader = classLoader;
076:                this .config = config;
077:                this .codeSource = codeSource;
078:            }
079:
080:            public List getModules() {
081:                return modules;
082:            }
083:
084:            public void addModule(ModuleNode node) {
085:                // node==null means a compilation error prevented
086:                // groovy from building an ast
087:                if (node == null)
088:                    return;
089:                modules.add(node);
090:                node.setUnit(this );
091:                addClasses(node.getClasses());
092:            }
093:
094:            /**
095:             * @return the ClassNode for the given qualified name or returns null if
096:             *         the name does not exist in the current compilation unit
097:             *         (ignoring the .class files on the classpath)
098:             */
099:            public ClassNode getClass(String name) {
100:                ClassNode cn = (ClassNode) classes.get(name);
101:                if (cn != null)
102:                    return cn;
103:                return (ClassNode) classesToCompile.get(name);
104:            }
105:
106:            /**
107:             * @return a list of all the classes in each module in the compilation unit
108:             */
109:            public List getClasses() {
110:                List answer = new ArrayList();
111:                for (Iterator iter = modules.iterator(); iter.hasNext();) {
112:                    ModuleNode module = (ModuleNode) iter.next();
113:                    answer.addAll(module.getClasses());
114:                }
115:                return answer;
116:            }
117:
118:            public CompilerConfiguration getConfig() {
119:                return config;
120:            }
121:
122:            public GroovyClassLoader getClassLoader() {
123:                return classLoader;
124:            }
125:
126:            public CodeSource getCodeSource() {
127:                return codeSource;
128:            }
129:
130:            /**
131:             * Appends all of the fully qualified class names in this
132:             * module into the given map
133:             */
134:            void addClasses(List classList) {
135:                for (Iterator iter = classList.iterator(); iter.hasNext();) {
136:                    addClass((ClassNode) iter.next());
137:                }
138:            }
139:
140:            /**
141:             *  Adds a class to the unit.
142:             */
143:            public void addClass(ClassNode node) {
144:                node = node.redirect();
145:                String name = node.getName();
146:                ClassNode stored = (ClassNode) classes.get(name);
147:                if (stored != null && stored != node) {
148:                    // we have a duplicate class!
149:                    // One possibility for this is, that we delcared a script and a 
150:                    // class in the same file and named the class like the file
151:                    SourceUnit nodeSource = node.getModule().getContext();
152:                    SourceUnit storedSource = stored.getModule().getContext();
153:                    String txt = "Invalid duplicate class definition of class "
154:                            + node.getName() + " : ";
155:                    if (nodeSource == storedSource) {
156:                        // same class in same source
157:                        txt += "The source "
158:                                + nodeSource.getName()
159:                                + " contains at last two defintions of the class "
160:                                + node.getName() + ".\n";
161:                        if (node.isScriptBody() || stored.isScriptBody()) {
162:                            txt += "One of the classes is a explicit generated class using the class statement, the other is a class generated from"
163:                                    + " the script body based on the file name. Solutions are to change the file name or to change the class name.\n";
164:                        }
165:                    } else {
166:                        txt += "The sources " + nodeSource.getName() + " and "
167:                                + storedSource.getName()
168:                                + " are containing both a class of the name "
169:                                + node.getName() + ".\n";
170:                    }
171:                    nodeSource.getErrorCollector().addErrorAndContinue(
172:                            new SyntaxErrorMessage(new SyntaxException(txt,
173:                                    node.getLineNumber(), node
174:                                            .getColumnNumber()), nodeSource));
175:                }
176:                classes.put(name, node);
177:
178:                if (classesToCompile.containsKey(name)) {
179:                    ClassNode cn = (ClassNode) classesToCompile.get(name);
180:                    cn.setRedirect(node);
181:                    classesToCompile.remove(name);
182:                }
183:            }
184:
185:            /**
186:             * this emthod actually does not compile a class. It's only
187:             * a marker that this type has to be compiled by the CompilationUnit
188:             * at the end of a parse step no node should be be left.
189:             */
190:            public void addClassNodeToCompile(ClassNode node,
191:                    SourceUnit location) {
192:                classesToCompile.put(node.getName(), node);
193:                classNameToSource.put(node.getName(), location);
194:            }
195:
196:            public SourceUnit getScriptSourceLocation(String className) {
197:                return (SourceUnit) classNameToSource.get(className);
198:            }
199:
200:            public boolean hasClassNodeToCompile() {
201:                return classesToCompile.size() != 0;
202:            }
203:
204:            public Iterator iterateClassNodeToCompile() {
205:                return classesToCompile.keySet().iterator();
206:            }
207:        }
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