forked from ReactiveX/RxJava
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathBaseTypeParser.java
More file actions
145 lines (108 loc) · 5.16 KB
/
BaseTypeParser.java
File metadata and controls
145 lines (108 loc) · 5.16 KB
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
/**
* Copyright (c) 2016-present, RxJava Contributors.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
* the License for the specific language governing permissions and limitations under the License.
*/
package io.reactivex;
import java.io.File;
import java.util.*;
/**
* Parses the java file of a reactive base type to allow discovering Javadoc mistakes algorithmically.
*/
public final class BaseTypeParser {
private BaseTypeParser() {
throw new IllegalStateException("No instances!");
}
public static class RxMethod {
public String signature;
public String backpressureKind;
public String schedulerKind;
public String javadoc;
public String backpressureDocumentation;
public String schedulerDocumentation;
public int javadocLine;
public int methodLine;
public int backpressureDocLine;
public int schedulerDocLine;
}
public static List<RxMethod> parse(File f, String baseClassName) throws Exception {
List<RxMethod> list = new ArrayList<RxMethod>();
StringBuilder b = JavadocForAnnotations.readFile(f);
int baseIndex = b.indexOf("public abstract class " + baseClassName);
if (baseIndex < 0) {
throw new AssertionError("Wrong base class file: " + baseClassName);
}
for (;;) {
RxMethod m = new RxMethod();
int javadocStart = b.indexOf("/**", baseIndex);
if (javadocStart < 0) {
break;
}
int javadocEnd = b.indexOf("*/", javadocStart + 2);
m.javadoc = b.substring(javadocStart, javadocEnd + 2);
m.javadocLine = JavadocForAnnotations.lineNumber(b, javadocStart);
int backpressureDoc = b.indexOf("<dt><b>Backpressure:</b></dt>", javadocStart);
if (backpressureDoc > 0 && backpressureDoc < javadocEnd) {
m.backpressureDocLine = JavadocForAnnotations.lineNumber(b, backpressureDoc);
int nextDD = b.indexOf("</dd>", backpressureDoc);
if (nextDD > 0 && nextDD < javadocEnd) {
m.backpressureDocumentation = b.substring(backpressureDoc, nextDD + 5);
}
}
int schedulerDoc = b.indexOf("<dt><b>Scheduler:</b></dt>", javadocStart);
if (schedulerDoc > 0 && schedulerDoc < javadocEnd) {
m.schedulerDocLine = JavadocForAnnotations.lineNumber(b, schedulerDoc);
int nextDD = b.indexOf("</dd>", schedulerDoc);
if (nextDD > 0 && nextDD < javadocEnd) {
m.schedulerDocumentation = b.substring(schedulerDoc, nextDD + 5);
}
}
int staticMethodDef = b.indexOf("public static ", javadocEnd + 2);
if (staticMethodDef < 0) {
staticMethodDef = Integer.MAX_VALUE;
}
int instanceMethodDef = b.indexOf("public final ", javadocEnd + 2);
if (instanceMethodDef < 0) {
instanceMethodDef = Integer.MAX_VALUE;
}
int javadocStartNext = b.indexOf("/**", javadocEnd + 2);
if (javadocStartNext < 0) {
javadocStartNext = Integer.MAX_VALUE;
}
int definitionStart = -1;
if (staticMethodDef > 0 && staticMethodDef < javadocStartNext && staticMethodDef < instanceMethodDef) {
definitionStart = staticMethodDef;
}
if (instanceMethodDef > 0 && instanceMethodDef < javadocStartNext && instanceMethodDef < staticMethodDef) {
definitionStart = instanceMethodDef;
}
if (definitionStart > 0) {
int methodDefEnd = b.indexOf("{", definitionStart);
m.signature = b.substring(definitionStart, methodDefEnd + 1);
m.methodLine = JavadocForAnnotations.lineNumber(b, definitionStart);
int backpressureSpec = b.indexOf("@BackpressureSupport(", javadocEnd);
if (backpressureSpec > 0 && backpressureSpec < definitionStart) {
int backpressureSpecEnd = b.indexOf(")", backpressureSpec + 21);
m.backpressureKind = b.substring(backpressureSpec + 21, backpressureSpecEnd);
}
int schhedulerSpec = b.indexOf("@SchedulerSupport(", javadocEnd);
if (schhedulerSpec > 0 && schhedulerSpec < definitionStart) {
int schedulerSpecEnd = b.indexOf(")", schhedulerSpec + 18);
m.schedulerKind = b.substring(schhedulerSpec + 18, schedulerSpecEnd);
}
list.add(m);
baseIndex = methodDefEnd;
} else {
baseIndex = javadocEnd + 2;
}
}
return list;
}
}