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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Igor Bukanov
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript.optimizer;
import org.mozilla.javascript.*;
/**
* Generates class files from script sources.
*
* since 1.5 Release 5
* @author Igor Bukanov
*/
public class ClassCompiler
{
/**
* Construct ClassCompiler that uses the specified compiler environment
* when generating classes.
*/
public ClassCompiler(CompilerEnvirons compilerEnv)
{
if (compilerEnv == null) throw new IllegalArgumentException();
this.compilerEnv = compilerEnv;
this.mainMethodClassName = Codegen.DEFAULT_MAIN_METHOD_CLASS;
}
/**
* Set the class name to use for main method implementation.
* The class must have a method matching
* <tt>public static void main(Script sc, String[] args)</tt>, it will be
* called when <tt>main(String[] args)</tt> is called in the generated
* class. The class name should be fully qulified name and include the
* package name like in <tt>org.foo.Bar<tt>.
*/
public void setMainMethodClass(String className)
{
// XXX Should this check for a valid class name?
mainMethodClassName = className;
}
/**
* Get the name of the class for main method implementation.
* @see #setMainMethodClass(String)
*/
public String getMainMethodClass()
{
return mainMethodClassName;
}
/**
* Get the compiler environment the compiler uses.
*/
public CompilerEnvirons getCompilerEnv()
{
return compilerEnv;
}
/**
* Get the class that the generated target will extend.
*/
public Class getTargetExtends()
{
return targetExtends;
}
/**
* Set the class that the generated target will extend.
*
* @param extendsClass the class it extends
*/
public void setTargetExtends(Class extendsClass)
{
targetExtends = extendsClass;
}
/**
* Get the interfaces that the generated target will implement.
*/
public Class[] getTargetImplements()
{
return targetImplements == null ? null : (Class[])targetImplements.clone();
}
/**
* Set the interfaces that the generated target will implement.
*
* @param implementsClasses an array of Class objects, one for each
* interface the target will extend
*/
public void setTargetImplements(Class[] implementsClasses)
{
targetImplements = implementsClasses == null ? null : (Class[])implementsClasses.clone();
}
/**
* Build class name for a auxiliary class generated by compiler.
* If the compiler needs to generate extra classes beyond the main class,
* it will call this function to build the auxiliary class name.
* The default implementation simply appends auxMarker to mainClassName
* but this can be overridden.
*/
protected String makeAuxiliaryClassName(String mainClassName,
String auxMarker)
{
return mainClassName+auxMarker;
}
/**
* Compile JavaScript source into one or more Java class files.
* The first compiled class will have name mainClassName.
* If the results of {@link #getTargetExtends()} or
* {@link #getTargetImplements()} are not null, then the first compiled
* class will extend the specified super class and implement
* specified interfaces.
*
* @return array where elements with even indexes specifies class name
* and the following odd index gives class file body as byte[]
* array. The initial element of the array always holds
* mainClassName and array[1] holds its byte code.
*/
public Object[] compileToClassFiles(String source,
String sourceLocation,
int lineno,
String mainClassName)
{
/*APPJET*/
Parser p =
InformativeParser.makeParser(compilerEnv,
compilerEnv.getErrorReporter());
ScriptOrFnNode tree = p.parse(source, sourceLocation, lineno);
String encodedSource = p.getEncodedSource();
Class superClass = getTargetExtends();
Class[] interfaces = getTargetImplements();
String scriptClassName;
boolean isPrimary = (interfaces == null && superClass == null);
if (isPrimary) {
scriptClassName = mainClassName;
} else {
scriptClassName = makeAuxiliaryClassName(mainClassName, "1");
}
Codegen codegen = new Codegen();
codegen.setMainMethodClass(mainMethodClassName);
byte[] scriptClassBytes
= codegen.compileToClassFile(compilerEnv, scriptClassName,
tree, encodedSource,
false);
if (isPrimary) {
return new Object[] { scriptClassName, scriptClassBytes };
}
int functionCount = tree.getFunctionCount();
ObjToIntMap functionNames = new ObjToIntMap(functionCount);
for (int i = 0; i != functionCount; ++i) {
FunctionNode ofn = tree.getFunctionNode(i);
String name = ofn.getFunctionName();
if (name != null && name.length() != 0) {
functionNames.put(name, ofn.getParamCount());
}
}
if (superClass == null) {
superClass = ScriptRuntime.ObjectClass;
}
byte[] mainClassBytes
= JavaAdapter.createAdapterCode(
functionNames, mainClassName,
superClass, interfaces, scriptClassName);
return new Object[] { mainClassName, mainClassBytes,
scriptClassName, scriptClassBytes };
}
private String mainMethodClassName;
private CompilerEnvirons compilerEnv;
private Class targetExtends;
private Class[] targetImplements;
}
|
