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
|
/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* 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.intellij.psi.impl.search;
import com.intellij.lexer.Lexer;
import com.intellij.lexer.LexerBase;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.highlighter.EditorHighlighter;
import com.intellij.openapi.editor.highlighter.EditorHighlighterFactory;
import com.intellij.openapi.editor.highlighter.HighlighterIterator;
import com.intellij.openapi.editor.impl.EditorHighlighterCache;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;
import com.intellij.psi.impl.cache.impl.id.PlatformIdTableBuilding;
import com.intellij.psi.tree.IElementType;
import com.intellij.util.text.CharSequenceSubSequence;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author Sergey Evdokimov
*/
public class LexerEditorHighlighterLexer extends LexerBase {
private HighlighterIterator iterator;
private CharSequence buffer;
private int start;
private int end;
private final EditorHighlighter myHighlighter;
private final boolean myAlreadyInitializedHighlighter;
public LexerEditorHighlighterLexer(final EditorHighlighter highlighter, boolean alreadyInitializedHighlighter) {
myHighlighter = highlighter;
myAlreadyInitializedHighlighter = alreadyInitializedHighlighter;
}
@Nullable
public static Lexer getLexerBasedOnLexerHighlighter(CharSequence text, VirtualFile virtualFile, Project project) {
EditorHighlighter highlighter = null;
PsiFile psiFile = virtualFile != null ? PsiManager.getInstance(project).findFile(virtualFile) : null;
final Document document = psiFile != null ? PsiDocumentManager.getInstance(project).getDocument(psiFile) : null;
final EditorHighlighter cachedEditorHighlighter;
boolean alreadyInitializedHighlighter = false;
if (document != null &&
(cachedEditorHighlighter = EditorHighlighterCache.getEditorHighlighterForCachesBuilding(document)) != null &&
PlatformIdTableBuilding.checkCanUseCachedEditorHighlighter(text, cachedEditorHighlighter)) {
highlighter = cachedEditorHighlighter;
alreadyInitializedHighlighter = true;
}
else if (virtualFile != null) {
highlighter = EditorHighlighterFactory.getInstance().createEditorHighlighter(project, virtualFile);
}
if (highlighter != null) {
return new LexerEditorHighlighterLexer(highlighter, alreadyInitializedHighlighter);
}
return null;
}
@Override
public void start(@NotNull CharSequence buffer, int startOffset, int endOffset, int state) {
if (myAlreadyInitializedHighlighter) {
this.buffer = buffer;
start = startOffset;
end = endOffset;
} else {
myHighlighter.setText(new CharSequenceSubSequence(this.buffer = buffer, start = startOffset, end = endOffset));
}
iterator = myHighlighter.createIterator(0);
}
public void resetPosition(int offset) {
iterator = myHighlighter.createIterator(offset);
}
@Override
public int getState() {
return 0;
}
@Override
public IElementType getTokenType() {
if (iterator.atEnd()) return null;
return iterator.getTokenType();
}
@Override
public int getTokenStart() {
return iterator.getStart();
}
@Override
public int getTokenEnd() {
return iterator.getEnd();
}
@Override
public void advance() {
iterator.advance();
}
@NotNull
@Override
public CharSequence getBufferSequence() {
return buffer;
}
@Override
public int getBufferEnd() {
return end;
}
public HighlighterIterator getHighlighterIterator() {
return iterator;
}
}
|
