[11700] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[12012] | 3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[11700] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System.Collections.Generic;
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[11738] | 23 | using System.Linq;
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[11700] | 24 | using ICSharpCode.NRefactory.Completion;
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| 25 | using ICSharpCode.NRefactory.CSharp;
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| 26 | using ICSharpCode.NRefactory.CSharp.Completion;
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| 27 | using ICSharpCode.NRefactory.TypeSystem;
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| 28 |
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| 29 | namespace HeuristicLab.CodeEditor {
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| 30 | internal class CSharpCodeCompletionStrategy : CodeCompletionStrategy {
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| 31 | private IProjectContent projectContent = new CSharpProjectContent();
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| 32 |
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| 33 | public CSharpCodeCompletionStrategy(CodeEditor codeEditor)
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| 34 | : base(codeEditor) {
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| 35 | codeEditor.InternalAssembliesLoaded += (sender, args) => {
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| 36 | projectContent = projectContent.AddAssemblyReferences(args.Value);
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| 37 | };
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| 38 | codeEditor.InternalAssembliesUnloaded += (sender, args) => {
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| 39 | projectContent = projectContent.RemoveAssemblyReferences(args.Value);
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| 40 | };
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| 41 | }
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| 42 |
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| 43 | protected override CodeCompletionResult GetCodeCompletionResult(bool controlSpace) {
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| 44 | var document = codeEditor.TextEditor.Document;
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| 45 | int offset = codeEditor.TextEditor.CaretOffset;
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| 46 | var result = new CodeCompletionResult();
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| 47 |
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[14029] | 48 | try {
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| 49 | var completionContext = new CSharpCodeCompletionContext(document, offset, projectContent);
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| 50 | var completionFactory = new CSharpCodeCompletionDataFactory(completionContext);
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| 51 | var cce = new CSharpCompletionEngine(
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| 52 | completionContext.Document,
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| 53 | completionContext.CompletionContextProvider,
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| 54 | completionFactory,
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| 55 | completionContext.ProjectContent,
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| 56 | completionContext.TypeResolveContextAtCaret
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| 57 | );
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[11700] | 58 |
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[14029] | 59 | char completionChar = completionContext.Document.GetCharAt(completionContext.Offset - 1);
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| 60 | int startPos, triggerWordLength;
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| 61 | IEnumerable<ICompletionData> completionData;
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| 62 |
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| 63 | if (controlSpace) {
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| 64 | if (!cce.TryGetCompletionWord(completionContext.Offset, out startPos, out triggerWordLength)) {
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| 65 | startPos = completionContext.Offset;
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| 66 | triggerWordLength = 0;
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| 67 | }
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| 68 | completionData = cce.GetCompletionData(startPos, true);
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| 69 | } else {
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[11700] | 70 | startPos = completionContext.Offset;
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[14029] | 71 | if (char.IsLetterOrDigit(completionChar) || completionChar == '_') {
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| 72 | if (startPos > 1 && char.IsLetterOrDigit(completionContext.Document.GetCharAt((startPos - 2))))
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| 73 | return result;
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| 74 | completionData = cce.GetCompletionData(startPos, false);
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| 75 | triggerWordLength = 1;
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| 76 | } else {
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| 77 | completionData = cce.GetCompletionData(startPos, false);
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| 78 | triggerWordLength = 0;
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| 79 | }
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[11700] | 80 | }
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| 81 |
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[14029] | 82 | result.TriggerWordLength = triggerWordLength;
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| 83 | result.TriggerWord = completionContext.Document.GetText(completionContext.Offset - triggerWordLength, triggerWordLength);
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[11700] | 84 |
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[14029] | 85 | if (completionData.Any() && cce.AutoCompleteEmptyMatch) {
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| 86 | foreach (var completion in completionData) {
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| 87 | var cast = completion as CompletionData;
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| 88 | if (cast != null) {
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| 89 | cast.TriggerWord = result.TriggerWord;
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| 90 | cast.TriggerWordLength = result.TriggerWordLength;
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| 91 | result.CompletionData.Add(cast);
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| 92 | }
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[11738] | 93 | }
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[11700] | 94 | }
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| 95 |
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[14029] | 96 | if (!controlSpace) {
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| 97 | var pce = new CSharpParameterCompletionEngine(
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| 98 | completionContext.Document,
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| 99 | completionContext.CompletionContextProvider,
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| 100 | completionFactory,
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| 101 | completionContext.ProjectContent,
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| 102 | completionContext.TypeResolveContextAtCaret
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| 103 | );
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[11700] | 104 |
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[14029] | 105 | var parameterDataProvider = pce.GetParameterDataProvider(completionContext.Offset, completionChar);
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| 106 | result.OverloadProvider = parameterDataProvider as IUpdatableOverloadProvider;
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| 107 | }
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| 108 | } catch {
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| 109 | // ignore exceptions thrown during code completion
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[11700] | 110 | }
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| 111 |
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| 112 | return result;
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| 113 | }
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[11800] | 114 |
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| 115 | protected override void DoParseStep() {
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[12646] | 116 | if (document == null) return;
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[11816] | 117 | var unresolvedFile = CSharpParsingHelpers.CreateCSharpUnresolvedFile(document);
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[11800] | 118 | projectContent = projectContent.AddOrUpdateFiles(unresolvedFile);
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| 119 | }
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[11700] | 120 | }
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| 121 | }
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