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
|
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.nashorn.internal.codegen;
/**
* Used to track split class compilation.
*/
public class CompileUnit {
/** Current class name */
private final String className;
/** Current class generator */
private final ClassEmitter classEmitter;
private long weight;
CompileUnit(final String className, final ClassEmitter classEmitter) {
this(className, classEmitter, 0L);
}
CompileUnit(final String className, final ClassEmitter classEmitter, final long initialWeight) {
this.className = className;
this.classEmitter = classEmitter;
this.weight = initialWeight;
}
/**
* Add weight to this compile unit
* @param w weight to add
*/
void addWeight(final long w) {
this.weight += w;
}
/**
* Get the current weight of the compile unit.
* @return the unit's weight
*/
long getWeight() {
return weight;
}
/**
* Check if this compile unit can hold {@code weight} more units of weight
* @param w weight to check if can be added
* @return true if weight fits in this compile unit
*/
public boolean canHold(final long w) {
return (this.weight + w) < Splitter.SPLIT_THRESHOLD;
}
/**
* Get the class emitter for this compile unit
* @return class emitter
*/
public ClassEmitter getClassEmitter() {
return classEmitter;
}
/**
* Get the class name for this compile unit
* @return the class name
*/
public String getUnitClassName() {
return className;
}
@Override
public String toString() {
return "[classname=" + className + " weight=" + weight + '/' + Splitter.SPLIT_THRESHOLD + ']';
}
}
|