-
Notifications
You must be signed in to change notification settings - Fork 1.1k
/
ParserRunner.java
247 lines (218 loc) · 8.8 KB
/
ParserRunner.java
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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
/*
* Copyright 2009 The Closure Compiler Authors.
*
* 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 com.google.javascript.jscomp.parsing;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.javascript.jscomp.parsing.Config.JsDocParsing;
import com.google.javascript.jscomp.parsing.Config.LanguageMode;
import com.google.javascript.jscomp.parsing.Config.RunMode;
import com.google.javascript.jscomp.parsing.Config.StrictMode;
import com.google.javascript.jscomp.parsing.parser.FeatureSet;
import com.google.javascript.jscomp.parsing.parser.Parser;
import com.google.javascript.jscomp.parsing.parser.Parser.Config.Mode;
import com.google.javascript.jscomp.parsing.parser.SourceFile;
import com.google.javascript.jscomp.parsing.parser.trees.Comment;
import com.google.javascript.jscomp.parsing.parser.trees.ProgramTree;
import com.google.javascript.jscomp.parsing.parser.util.SourcePosition;
import com.google.javascript.rhino.ErrorReporter;
import com.google.javascript.rhino.Node;
import com.google.javascript.rhino.SimpleSourceFile;
import com.google.javascript.rhino.StaticSourceFile;
import java.util.HashSet;
import java.util.List;
import java.util.ResourceBundle;
import java.util.Set;
import javax.annotation.Nullable;
/** parser runner */
public final class ParserRunner {
private static final String CONFIG_RESOURCE =
"com.google.javascript.jscomp.parsing.ParserConfig";
private static Set<String> annotationNames = null;
private static Set<String> suppressionNames = null;
private static Set<String> reservedVars = null;
// Should never need to instantiate class of static methods.
private ParserRunner() {}
public static Config createConfig(
LanguageMode languageMode, Set<String> extraAnnotationNames, StrictMode strictMode) {
return createConfig(
languageMode,
JsDocParsing.TYPES_ONLY,
RunMode.STOP_AFTER_ERROR,
extraAnnotationNames,
true,
strictMode);
}
public static Config createConfig(
LanguageMode languageMode,
JsDocParsing jsdocParsingMode,
RunMode runMode,
Set<String> extraAnnotationNames,
boolean parseInlineSourceMaps,
StrictMode strictMode) {
initResourceConfig();
Set<String> effectiveAnnotationNames;
if (extraAnnotationNames == null) {
effectiveAnnotationNames = annotationNames;
} else {
effectiveAnnotationNames = new HashSet<>(annotationNames);
effectiveAnnotationNames.addAll(extraAnnotationNames);
}
return Config.builder()
.setExtraAnnotationNames(effectiveAnnotationNames)
.setJsDocParsingMode(jsdocParsingMode)
.setRunMode(runMode)
.setSuppressionNames(suppressionNames)
.setLanguageMode(languageMode)
.setParseInlineSourceMaps(parseInlineSourceMaps)
.setStrictMode(strictMode)
.build();
}
public static Set<String> getReservedVars() {
initResourceConfig();
return reservedVars;
}
private static synchronized void initResourceConfig() {
if (annotationNames != null) {
return;
}
ResourceBundle config = ResourceBundle.getBundle(CONFIG_RESOURCE);
annotationNames = extractList(config.getString("jsdoc.annotations"));
suppressionNames = extractList(config.getString("jsdoc.suppressions"));
reservedVars = extractList(config.getString("compiler.reserved.vars"));
}
private static ImmutableSet<String> extractList(String configProp) {
return ImmutableSet.copyOf(Splitter.on(',').trimResults().split(configProp));
}
public static ParseResult parse(
StaticSourceFile sourceFile,
String sourceString,
Config config,
ErrorReporter errorReporter) {
// TODO(johnlenz): unify "SourceFile", "Es6ErrorReporter" and "Config"
String sourceName = sourceFile.getName();
try {
SourceFile file = new SourceFile(sourceName, sourceString);
boolean keepGoing = config.runMode() == Config.RunMode.KEEP_GOING;
Es6ErrorReporter es6ErrorReporter = new Es6ErrorReporter(errorReporter, keepGoing);
com.google.javascript.jscomp.parsing.parser.Parser.Config es6config = newParserConfig(config);
Parser p = new Parser(es6config, es6ErrorReporter, file);
ProgramTree tree = p.parseProgram();
Node root = null;
List<Comment> comments = ImmutableList.of();
FeatureSet features = p.getFeatures();
if (tree != null && (!es6ErrorReporter.hadError() || keepGoing)) {
IRFactory factory =
IRFactory.transformTree(tree, sourceFile, sourceString, config, errorReporter);
root = factory.getResultNode();
features = features.union(factory.getFeatures());
root.putProp(Node.FEATURE_SET, features);
if (config.jsDocParsingMode().shouldParseDescriptions()) {
comments = p.getComments();
}
}
return new ParseResult(root, comments, features, p.getSourceMapURL());
} catch (Throwable t) {
throw new RuntimeException("Exception parsing \"" + sourceName + "\"", t);
}
}
private static com.google.javascript.jscomp.parsing.parser.Parser.Config newParserConfig(
Config config) {
LanguageMode languageMode = config.languageMode();
boolean isStrictMode = config.strictMode().isStrict();
Mode parserConfigLanguageMode = null;
switch (languageMode) {
case TYPESCRIPT:
parserConfigLanguageMode = Mode.TYPESCRIPT;
break;
case ECMASCRIPT3:
parserConfigLanguageMode = Mode.ES3;
break;
case ECMASCRIPT5:
parserConfigLanguageMode = Mode.ES5;
break;
case ECMASCRIPT6:
case ECMASCRIPT7:
parserConfigLanguageMode = Mode.ES6_OR_ES7;
break;
case ECMASCRIPT8:
case ECMASCRIPT2018:
parserConfigLanguageMode = Mode.ES8_OR_GREATER;
break;
case ES_NEXT:
parserConfigLanguageMode = Mode.ES_NEXT;
break;
}
return new com.google.javascript.jscomp.parsing.parser.Parser.Config(
checkNotNull(parserConfigLanguageMode), isStrictMode);
}
// TODO(sdh): this is less useful if we end up needing the node for library version detection
public static FeatureSet detectFeatures(String sourcePath, String sourceString) {
SourceFile file = new SourceFile(sourcePath, sourceString);
ErrorReporter reporter = IRFactory.NULL_REPORTER;
com.google.javascript.jscomp.parsing.parser.Parser.Config config =
newParserConfig(IRFactory.NULL_CONFIG);
Parser p = new Parser(config, new Es6ErrorReporter(reporter, false), file);
ProgramTree tree = p.parseProgram();
StaticSourceFile simpleSourceFile = new SimpleSourceFile(sourcePath, false);
return IRFactory.detectFeatures(tree, simpleSourceFile, sourceString).union(p.getFeatures());
}
private static class Es6ErrorReporter
extends com.google.javascript.jscomp.parsing.parser.util.ErrorReporter {
private final ErrorReporter reporter;
private boolean errorSeen = false;
private final boolean reportAllErrors;
Es6ErrorReporter(
ErrorReporter reporter,
boolean reportAllErrors) {
this.reporter = reporter;
this.reportAllErrors = reportAllErrors;
}
@Override
protected void reportError(SourcePosition location, String message) {
// In normal usage, only the first parse error should be reported, but
// sometimes it is useful to keep going.
if (reportAllErrors || !errorSeen) {
errorSeen = true;
this.reporter.error(
message, location.source.name,
location.line + 1, location.column);
}
}
@Override
protected void reportWarning(SourcePosition location, String message) {
this.reporter.warning(
message, location.source.name,
location.line + 1, location.column);
}
}
/**
* Holds results of parsing.
*/
public static class ParseResult {
public final Node ast;
public final List<Comment> comments;
public final FeatureSet features;
@Nullable public final String sourceMapURL;
public ParseResult(Node ast, List<Comment> comments, FeatureSet features, String sourceMapURL) {
this.ast = ast;
this.comments = comments;
this.features = features;
this.sourceMapURL = sourceMapURL;
}
}
}