1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47 package org.codehaus.groovy.control;
48
49 import groovy.lang.GroovyClassLoader;
50
51 /***
52 * A base class for data structures that can collect messages and errors
53 * during processing.
54 *
55 * @author <a href="mailto:cpoirier@dreaming.org">Chris Poirier</a>
56 * @version $Id: ProcessingUnit.java,v 1.17 2005/06/27 17:34:03 fraz Exp $
57 */
58
59 public abstract class ProcessingUnit {
60
61 /***
62 * The current phase
63 */
64 protected int phase;
65 /***
66 * Set true if phase is finished
67 */
68 protected boolean phaseComplete;
69
70 /***
71 * Configuration and other settings that control processing
72 */
73 protected CompilerConfiguration configuration;
74
75 /***
76 * The ClassLoader to use during processing
77 */
78 protected ClassLoader classLoader;
79
80 /***
81 * a helper to share errors and report them
82 */
83 protected ErrorCollector errorCollector;
84
85
86 /***
87 * Initialize the ProcessingUnit to the empty state.
88 */
89
90 public ProcessingUnit(CompilerConfiguration configuration, ClassLoader classLoader, ErrorCollector er) {
91
92 this.phase = Phases.INITIALIZATION;
93 ClassLoader parent = Thread.currentThread().getContextClassLoader();
94 if (parent == null) parent = ProcessingUnit.class.getClassLoader();
95 this.classLoader = (classLoader == null ? new GroovyClassLoader(parent, configuration) : classLoader);
96 configure((configuration == null ? new CompilerConfiguration() : configuration));
97 if (er==null) er = new ErrorCollector(getConfiguration());
98 this.errorCollector = er;
99 }
100
101
102 /***
103 * Reconfigures the ProcessingUnit.
104 */
105 public void configure(CompilerConfiguration configuration) {
106 this.configuration = configuration;
107 }
108
109
110 public CompilerConfiguration getConfiguration() {
111 return configuration;
112 }
113
114 public void setConfiguration(CompilerConfiguration configuration) {
115 this.configuration = configuration;
116 }
117
118 /***
119 * Returns the class loader in use by this ProcessingUnit.
120 */
121
122 public ClassLoader getClassLoader() {
123 return classLoader;
124 }
125
126
127 /***
128 * Sets the class loader for use by this ProcessingUnit.
129 */
130
131 public void setClassLoader(ClassLoader loader) {
132 this.classLoader = loader;
133 }
134
135
136 /***
137 * Returns the current phase.
138 */
139
140 public int getPhase() {
141 return this.phase;
142 }
143
144
145 /***
146 * Returns the description for the current phase.
147 */
148
149 public String getPhaseDescription() {
150 return Phases.getDescription(this.phase);
151 }
152
153 public ErrorCollector getErrorCollector() {
154 return errorCollector;
155 }
156
157
158
159
160
161 /***
162 * Marks the current phase complete and processes any
163 * errors.
164 */
165
166 public void completePhase() throws CompilationFailedException {
167 errorCollector.failIfErrors();
168 phaseComplete = true;
169 }
170
171
172 /***
173 * A synonym for <code>gotoPhase( phase + 1 )</code>.
174 */
175 public void nextPhase() throws CompilationFailedException {
176 gotoPhase(this.phase + 1);
177 }
178
179
180 /***
181 * Wraps up any pending operations for the current phase
182 * and switches to the next phase.
183 */
184 public void gotoPhase(int phase) throws CompilationFailedException {
185 if (!this.phaseComplete) {
186 completePhase();
187 }
188
189 this.phase = phase;
190 this.phaseComplete = false;
191 }
192
193 }
194
195
196
197