1 package org.simantics.scl.ui.editor2;
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4 import org.eclipse.core.commands.AbstractHandler;
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5 import org.eclipse.core.commands.ExecutionEvent;
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6 import org.eclipse.core.commands.ExecutionException;
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7 import org.eclipse.swt.custom.StyledText;
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8 import org.eclipse.swt.widgets.Control;
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9 import org.eclipse.ui.IEditorPart;
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10 import org.eclipse.ui.PlatformUI;
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11 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
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12 import org.simantics.scl.ui.editor.completion.SCLTextEditorEnvironment;
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14 public class OpenDeclaration extends AbstractHandler {
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16 private static boolean isIdentifierPart(char c) {
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17 return Character.isJavaIdentifierPart(c) || c=='.';
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20 private static String extractIdentifierAt(String text, int caretPos) {
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21 int startPos = caretPos;
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22 while(startPos > 0 && isIdentifierPart(text.charAt(startPos-1)))
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24 int endPos = caretPos;
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25 while(endPos < text.length() && isIdentifierPart(text.charAt(endPos)))
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27 return text.substring(startPos, endPos);
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30 private static final String SYMBOL_CHARS = "!$%&*+/<=>?@\\^|-:~.";
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32 private static boolean isSymbolPart(char c) {
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33 for(int i=0;i<SYMBOL_CHARS.length();++i)
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34 if(SYMBOL_CHARS.charAt(i) == c)
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39 private static String extractSymbolAt(String text, int caretPos) {
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40 int startPos = caretPos;
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41 while(startPos > 0 && isSymbolPart(text.charAt(startPos-1)))
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43 int endPos = caretPos;
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44 while(endPos < text.length() && isSymbolPart(text.charAt(endPos)))
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46 return text.substring(startPos, endPos);
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49 public static String extractIdentifierOrSymbolAt(String text, int caretPos) {
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50 String result = extractIdentifierAt(text, caretPos);
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51 if(!result.isEmpty())
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53 return extractSymbolAt(text, caretPos);
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56 private static String extractLineAt(String text, int caretPos) {
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57 int startPos = caretPos;
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58 while(startPos > 0 && !isNewline(text.charAt(startPos-1)))
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60 int endPos = caretPos;
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61 while(endPos < text.length() && !isNewline(text.charAt(endPos)))
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63 return text.substring(startPos, endPos);
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66 private static boolean isNewline(char c) {
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67 return c=='\n' || c=='\r';
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71 public Object execute(ExecutionEvent event) throws ExecutionException {
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72 IEditorPart editor =
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73 PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
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74 if(!(editor instanceof SCLModuleEditor2))
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76 SCLModuleEditor2 moduleEditor = (SCLModuleEditor2)editor;
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77 StyledText styledText = (StyledText)moduleEditor.getAdapter(Control.class);
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78 String text = styledText.getText();
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79 int caretOffset = styledText.getCaretOffset();
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81 // Find the line where the caret is
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82 String lineAtCaret = extractLineAt(text, caretOffset);
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83 if(lineAtCaret.startsWith("import ") || lineAtCaret.startsWith("include ")) {
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84 int p1 = lineAtCaret.indexOf('"', 6);
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85 int p2 = lineAtCaret.indexOf('"', p1+1);
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86 String moduleName = lineAtCaret.substring(p1+1, p2);
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87 OpenSCLModule.openModule(moduleName);
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90 // Try to find an identifier at caret
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91 String identifierAtCaret = extractIdentifierOrSymbolAt(text, caretOffset);
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92 if(identifierAtCaret.isEmpty())
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94 SCLTextEditorEnvironment editorEnvironment = moduleEditor.getSCLTextEditorEnvironment();
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95 editorEnvironment.updateEnvironment(moduleEditor.getDocument());
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96 SCLValue value = editorEnvironment.getValue(identifierAtCaret);
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98 OpenSCLDefinition.openDefinition(value);
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