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
|
/*******************************************************************************
* Copyright (c) 2005, 2015 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Tom Eicher <eclipse@tom.eicher.name> - [content assist] prefix complete casted method proposals - https://bugs.eclipse.org/bugs/show_bug.cgi?id=247547
* Mohamed Azab (Mentor Graphics) - Bug 438549. Add mechanism for parameter guessing.
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.contentassist;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.link.ILinkedModeListener;
import org.eclipse.jface.text.link.LinkedModeModel;
import org.eclipse.jface.text.link.LinkedModeUI;
import org.eclipse.jface.text.link.LinkedModeUI.ExitFlags;
import org.eclipse.jface.text.link.LinkedModeUI.IExitPolicy;
import org.eclipse.jface.text.link.LinkedPosition;
import org.eclipse.jface.text.link.LinkedPositionGroup;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.texteditor.link.EditorLinkedModeUI;
import org.eclipse.cdt.core.dom.ast.IFunction;
import org.eclipse.cdt.core.dom.ast.IParameter;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.ui.CUIPlugin;
/**
* This is a modified version of org.eclipse.jdt.internal.ui.text.java.JavaMethodCompletionProposal
*
* This class adds a linked mode function compilation proposal with exit policy.
*/
public class FunctionCompletionProposal extends CCompletionProposal {
private boolean fHasParametersComputed;
private boolean fHasParameters;
protected IParameter[] fFunctionParameters;
protected int fInvocationOffset;
protected int fParseOffset;
protected ITranslationUnit fTranslationUnit;
protected IDocument fDocument;
public FunctionCompletionProposal(String replacementString, int replacementOffset, int replacementLength,
Image image, String displayString, String idString, int relevance, ITextViewer viewer,
IFunction function, int invocationOffset, int parseOffset, ITranslationUnit translationUnit, IDocument document) {
super(replacementString, replacementOffset, replacementLength, image, displayString, idString,
relevance, viewer);
fFunctionParameters = function.getParameters();
fInvocationOffset = invocationOffset;
fParseOffset = parseOffset;
fTranslationUnit = translationUnit;
fDocument = document;
}
@Override
public void apply(IDocument document, char trigger, int offset) {
if (trigger == ' ' || trigger == '(')
trigger = '\0';
super.apply(document, trigger, offset);
if (hasParameters()) {
setUpLinkedMode(document, ')');
} else if (getReplacementString().endsWith(";")) { //$NON-NLS-1$
setUpLinkedMode(document, ';');
}
}
/**
* Returns {@code true} if the method has any parameters, {@code true} if it has no parameters
*/
protected final boolean hasParameters() {
if (!fHasParametersComputed) {
fHasParametersComputed = true;
fHasParameters = computeHasParameters();
}
return fHasParameters;
}
private boolean computeHasParameters() {
return (fFunctionParameters != null && fFunctionParameters.length != 0);
}
protected static class ExitPolicy implements IExitPolicy {
final char fExitCharacter;
public ExitPolicy(char exitCharacter) {
fExitCharacter = exitCharacter;
}
@Override
public ExitFlags doExit(LinkedModeModel environment, VerifyEvent event, int offset, int length) {
if (event.character == fExitCharacter) {
if (environment.anyPositionContains(offset)) {
return new ExitFlags(ILinkedModeListener.UPDATE_CARET, false);
} else {
return new ExitFlags(ILinkedModeListener.UPDATE_CARET, true);
}
}
switch (event.character) {
case ';':
return new ExitFlags(ILinkedModeListener.NONE, true);
default:
return null;
}
}
}
protected void setUpLinkedMode(IDocument document, char closingCharacter) {
if (fTextViewer != null) {
int exit = getReplacementOffset() + getReplacementString().length();
try {
LinkedPositionGroup group = new LinkedPositionGroup();
group.addPosition(new LinkedPosition(document, fInvocationOffset, 0,
LinkedPositionGroup.NO_STOP));
LinkedModeModel model = new LinkedModeModel();
model.addGroup(group);
model.forceInstall();
LinkedModeUI ui = new EditorLinkedModeUI(model, fTextViewer);
ui.setSimpleMode(true);
ui.setExitPolicy(new ExitPolicy(closingCharacter));
ui.setExitPosition(fTextViewer, exit, 0, Integer.MAX_VALUE);
ui.setCyclingMode(LinkedModeUI.CYCLE_NEVER);
ui.enter();
} catch (BadLocationException x) {
CUIPlugin.log(x);
}
}
}
}
|
