diff options
Diffstat (limited to 'systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/editors/stp/STPCompletionProcessor.java')
| -rw-r--r-- | systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/editors/stp/STPCompletionProcessor.java | 912 |
1 files changed, 456 insertions, 456 deletions
diff --git a/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/editors/stp/STPCompletionProcessor.java b/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/editors/stp/STPCompletionProcessor.java index 3d9791b27a..feb2a11635 100644 --- a/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/editors/stp/STPCompletionProcessor.java +++ b/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/editors/stp/STPCompletionProcessor.java @@ -32,460 +32,460 @@ import org.eclipse.linuxtools.internal.systemtap.ui.ide.structures.TapsetLibrary public class STPCompletionProcessor implements IContentAssistProcessor, ITextHover { - private final IContextInformation[] NO_CONTEXTS = new IContextInformation[0]; - private final char[] PROPOSAL_ACTIVATION_CHARS = new char[] { '.' }; - private ICompletionProposal[] NO_COMPLETIONS = new ICompletionProposal[0]; - - private static final String GLOBAL_KEYWORD = "global "; //$NON-NLS-1$ - private static final String PROBE_KEYWORD = "probe "; //$NON-NLS-1$ - private static final String FUNCTION_KEYWORD = "function "; //$NON-NLS-1$ - - private static final String[][] GLOBAL_KEYWORDS = { - { GLOBAL_KEYWORD, Messages.STPCompletionProcessor_global }, - { PROBE_KEYWORD, Messages.STPCompletionProcessor_probe }, - { FUNCTION_KEYWORD, Messages.STPCompletionProcessor_function } }; - - private STPMetadataSingleton stpMetadataSingleton; - - private static class Token implements IRegion { - String tokenString; - int offset; - - public Token(String string, int n) { - this.tokenString = string; - this.offset = n; - } - - @Override - public int getLength() { - return this.tokenString.length(); - } - - @Override - public int getOffset() { - return this.offset; - } - } - - public STPCompletionProcessor() { - this.stpMetadataSingleton = STPMetadataSingleton.getInstance(); - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeCompletionProposals(org.eclipse.jface.text.ITextViewer, int) - */ - @Override - public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, - int offset) { - return computeCompletionProposals(viewer.getDocument(), offset); - } - - public ICompletionProposal[] computeCompletionProposals(IDocument document, int offset) { - - ITypedRegion partition = null; - boolean useGlobal = false; - - try { - partition = - ((IDocumentExtension3) document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, offset, false); - if (partition.getOffset() == offset) { - if (partition.getType() != IDocument.DEFAULT_CONTENT_TYPE && partition.getType() != STPProbeScanner.STP_PROBE) { - if (offset > 0) { - ITypedRegion prevPartition = - ((IDocumentExtension3) document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, offset - 1, false); - useGlobal = prevPartition.getType() == IDocument.DEFAULT_CONTENT_TYPE; - } else { - useGlobal = true; - } - } - } - } catch (BadLocationException e1) { - return NO_COMPLETIONS; - } catch (BadPartitioningException e) { - return NO_COMPLETIONS; - } - - String prefix = ""; //$NON-NLS-1$ - String prePrefix = ""; //$NON-NLS-1$ - - // Get completion hint from document - try { - prefix = getPrefix(document, offset); - Token previousToken = getPrecedingToken(document, offset - prefix.length() - 1); - - while (previousToken.tokenString.equals("=") || //$NON-NLS-1$ - previousToken.tokenString.equals(",") ) { //$NON-NLS-1$ - previousToken = getPrecedingToken(document, previousToken.offset - 1); - previousToken = getPrecedingToken(document, previousToken.offset - 1); - } - - prePrefix = previousToken.tokenString; - - } catch (BadLocationException e) { - return NO_COMPLETIONS; - } - - if (prePrefix.startsWith("probe")) { //$NON-NLS-1$ - return getProbeCompletionList(prefix, offset); - } - - // If inside a probe return probe variable completions and functions - // which can be called. - if (partition.getType() == STPProbeScanner.STP_PROBE) { - ICompletionProposal[] variableCompletions = getProbeVariableCompletions(document, offset, prefix); - ICompletionProposal[] functionCompletions = getFunctionCompletions(offset, prefix); - - ArrayList<ICompletionProposal> completions = new ArrayList<>( - variableCompletions.length + functionCompletions.length); - completions.addAll(Arrays.asList(variableCompletions)); - completions.addAll(Arrays.asList(functionCompletions)); - - return completions.toArray(new ICompletionProposal[0]); - } else if (partition.getType() == IDocument.DEFAULT_CONTENT_TYPE || useGlobal) { - // In the global scope return global keyword completion. - return getGlobalKeywordCompletion(prefix, offset); - } - - return NO_COMPLETIONS; - } - - private ICompletionProposal[] getFunctionCompletions(int offset, - String prefix) { - String[] completionData = stpMetadataSingleton.getFunctionCompletions(prefix); - ICompletionProposal[] result = new ICompletionProposal[completionData.length]; - int prefixLength = prefix.length(); - for (int i = 0; i < completionData.length; i++) { - result[i] = new CompletionProposal( - completionData[i].substring(prefixLength) + "()", //$NON-NLS-1$ - offset, - 0, - completionData[i].length() - prefixLength + 1, - null, - completionData[i] + " - function", //$NON-NLS-1$ - null, - TapsetLibrary.getAndCacheDocumentation("function::" + completionData[i])); //$NON-NLS-1$ - } - - return result; - } - - private ICompletionProposal[] getProbeVariableCompletions(IDocument document, int offset, String prefix) { - try { - String probe; - probe = getProbe(document, offset); - String[] completionData = stpMetadataSingleton - .getProbeVariableCompletions(probe, prefix); - ICompletionProposal[] result = new ICompletionProposal[completionData.length]; - - int prefixLength = prefix.length(); - for (int i = 0; i < completionData.length; i++) { - int endIndex = completionData[i].indexOf(':'); - String variableName = completionData[i].substring(0, endIndex); - result[i] = new CompletionProposal(completionData[i].substring( - prefixLength, endIndex), - offset, - 0, - endIndex - prefixLength, - null, - completionData[i] + " - variable", //$NON-NLS-1$ - null, - TapsetLibrary.getAndCacheDocumentation("probe::" + probe + "::" + variableName)); //$NON-NLS-1$ //$NON-NLS-2$ - } - return result; - } catch (BadLocationException e) { - return NO_COMPLETIONS; - } catch (BadPartitioningException e) { - return NO_COMPLETIONS; - } - } - - /** - * Returns the full name of the probe surrounding the given - * offset. This function assumes that the given offset is inside - * of a {@link STPPartitionScanner#STP_PROBE} section. - * @param document - * @param offset - * @return the probe name - * @throws BadLocationException - * @throws BadPartitioningException - */ - private String getProbe(IDocument document, int offset) throws BadLocationException, BadPartitioningException { - String probePoint = null; - - ITypedRegion partition - = ((IDocumentExtension3)document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, - offset, false); - String probe = document.get(partition.getOffset(), partition.getLength()); - - // make sure that we are inside a probe - if (probe.startsWith(PROBE_KEYWORD)) { - probePoint = probe.substring(PROBE_KEYWORD.length(), probe.indexOf('{')); - probePoint = probePoint.trim(); - } - - return probePoint; - } - - private ICompletionProposal[] getProbeCompletionList(String prefix, int offset) { - prefix = canonicalizePrefix(prefix); - String[] completionData = stpMetadataSingleton.getProbeCompletions(prefix); - - ICompletionProposal[] result = new ICompletionProposal[completionData.length]; - for (int i = 0; i < completionData.length; i++) { - result[i] = new CompletionProposal( - completionData[i].substring(prefix.length()), - offset, - 0, - completionData[i].length() - prefix.length(), - null, - completionData[i], - null, - TapsetLibrary.getAndCacheDocumentation("probe::" + completionData[i])); //$NON-NLS-1$ - } - return result; - - } - - /** - * Returns a standardized version of the given prefix so that completion matching - * can be performed. - * For example for process("/some/long/path") this returns process(string); - * @param prefix - * @return - */ - private String canonicalizePrefix(String prefix) { - - if (prefix.isEmpty()) { - return ""; //$NON-NLS-1$ - } - prefix = prefix.replaceAll("(?s)\\(\\s*\".*\"\\s*\\)", "(string)"); //$NON-NLS-1$ //$NON-NLS-2$ - prefix = prefix.replaceAll("(?s)\\(\\s*\\d*\\s*\\)", "(number)"); //$NON-NLS-1$ //$NON-NLS-2$ - return prefix; - } - - private ICompletionProposal[] getGlobalKeywordCompletion(String prefix, int offset) { - - ArrayList<ICompletionProposal> completions = new ArrayList<>(); - int prefixLength = prefix.length(); - for (String[] keyword : GLOBAL_KEYWORDS) { - if (keyword[0].startsWith(prefix)) { - CompletionProposal proposal = new CompletionProposal( - keyword[0].substring(prefixLength), - offset, - 0, - keyword[0].length() - prefixLength, - null, - keyword[0], - new ContextInformation("contextDisplayString", "informationDisplayString"), //$NON-NLS-1$ //$NON-NLS-2$ - keyword[1]); - completions.add(proposal); - } - } - return completions.toArray(new ICompletionProposal[0]); - } - - /** - * Returns the token preceding the current completion position. - * @param doc The document for the which the completion is requested. - * @param prefix The prefix for which the user has requested completion. - * @param offset Current offset in the document - * @return The preceding token. - * @throws BadLocationException - */ - private Token getPrecedingToken(IDocument doc, int offset) throws BadLocationException { - // Skip trailing space - int n = offset; - while (n >= 0 && Character.isSpaceChar(doc.getChar(n))) { - n--; - } - - char c = doc.getChar(n); - if (isTokenDelimiter(c)) { - return new Token(Character.toString(c), n); - } - - int end = n; - while (n >= 0 && !isTokenDelimiter((doc.getChar(n)))) { - n--; - } - - return new Token(doc.get(n+1, end-n), n+1); - } - - private Token getCurrentToken(IDocument doc, int offset) throws BadLocationException { - char c = doc.getChar(offset); - - if (isDelimiter(c)) { - return new Token(Character.toString(c), offset); - } - - int start = offset; - while (start >= 0 && !isDelimiter((doc.getChar(start)))) { - start--; - } - - int end = offset; - while (end < doc.getLength() && !isDelimiter((doc.getChar(end)))) { - end++; - } - - start++; - return new Token(doc.get(start, end-start), start); - } - - /** - * - * Return the word the user wants to submit for completion proposals. - * - * @param doc - document to insert completion. - * @param offset - offset of where completion hint was first generated. - * @return - word to generate completion proposals. - * - * @throws BadLocationException - */ - private String getPrefix(IDocument doc, int offset) - throws BadLocationException { - - for (int n = offset - 1; n >= 0; n--) { - char c = doc.getChar(n); - if (isTokenDelimiter(c)) { - String word = doc.get(n + 1, offset - n - 1); - return word; - } - } - return ""; //$NON-NLS-1$ - } - - private boolean isTokenDelimiter(char c) { - if (Character.isWhitespace(c)) { - return true; - } - - switch (c) { - case '\n': - case '\0': - case ',': - case '{': - case '}': - case ']': - case '[': - return true; - } - return false; - } - - private boolean isDelimiter (char c) { - - if (isTokenDelimiter(c)) { - return true; - } - - switch (c) { - case '(': - case ')': - return true; - } - return false; - } - - public void waitForInitialization() { - this.stpMetadataSingleton.waitForInitialization(); - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeContextInformation(org.eclipse.jface.text.ITextViewer, int) - */ - @Override - public IContextInformation[] computeContextInformation(ITextViewer viewer, - int offset) { - return NO_CONTEXTS; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getCompletionProposalAutoActivationCharacters() - */ - @Override - public char[] getCompletionProposalAutoActivationCharacters() { - return PROPOSAL_ACTIVATION_CHARS; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationAutoActivationCharacters() - */ - @Override - public char[] getContextInformationAutoActivationCharacters() { - return PROPOSAL_ACTIVATION_CHARS; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationValidator() - */ - @Override - public IContextInformationValidator getContextInformationValidator() { - return null; - } - - /* (non-Javadoc) - * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getErrorMessage() - */ - @Override - public String getErrorMessage() { - // TODO: When does this trigger? - return "Error."; //$NON-NLS-1$ - } - - @Override - public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) { - String documentation = null; - try { - String keyword = textViewer.getDocument().get(hoverRegion.getOffset(), hoverRegion.getLength()); - - documentation = TapsetLibrary.getDocumentation("function::" + keyword); //$NON-NLS-1$ - if (!documentation.startsWith("No manual entry for")) { //$NON-NLS-1$ - return documentation; - } - - documentation = TapsetLibrary.getDocumentation("probe::" + keyword); //$NON-NLS-1$ - if (!documentation.startsWith("No manual entry for")) { //$NON-NLS-1$ - return documentation; - } - - documentation = TapsetLibrary.getDocumentation("tapset::" + keyword); //$NON-NLS-1$ - if (!documentation.startsWith("No manual entry for")) { //$NON-NLS-1$ - return documentation; - } - - if (keyword.indexOf('.') > 0) { - keyword = keyword.split("\\.")[0]; //$NON-NLS-1$ - documentation = TapsetLibrary.getDocumentation("tapset::" + keyword); //$NON-NLS-1$ - } - - IDocument document = textViewer.getDocument(); - ITypedRegion partition = - ((IDocumentExtension3)document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, - hoverRegion.getOffset(), false); - if (partition.getType() == STPProbeScanner.STP_PROBE) { - String probe = getProbe(textViewer.getDocument(), hoverRegion.getOffset()); - documentation = TapsetLibrary.getDocumentation("probe::" + probe + "::"+ keyword); //$NON-NLS-1$ //$NON-NLS-2$ - } - - } catch (BadLocationException e) { - // Bad hover location; just ignore it. - } catch (BadPartitioningException e) { - // Bad hover scenario, just ignore it. - } - - return documentation; - } - - @Override - public IRegion getHoverRegion(ITextViewer textViewer, int offset) { - try { - return getCurrentToken(textViewer.getDocument(), offset); - } catch (BadLocationException e) { - // Bad hover location; just ignore it. - } - - return null; - } + private final IContextInformation[] NO_CONTEXTS = new IContextInformation[0]; + private final char[] PROPOSAL_ACTIVATION_CHARS = new char[] { '.' }; + private ICompletionProposal[] NO_COMPLETIONS = new ICompletionProposal[0]; + + private static final String GLOBAL_KEYWORD = "global "; //$NON-NLS-1$ + private static final String PROBE_KEYWORD = "probe "; //$NON-NLS-1$ + private static final String FUNCTION_KEYWORD = "function "; //$NON-NLS-1$ + + private static final String[][] GLOBAL_KEYWORDS = { + { GLOBAL_KEYWORD, Messages.STPCompletionProcessor_global }, + { PROBE_KEYWORD, Messages.STPCompletionProcessor_probe }, + { FUNCTION_KEYWORD, Messages.STPCompletionProcessor_function } }; + + private STPMetadataSingleton stpMetadataSingleton; + + private static class Token implements IRegion { + String tokenString; + int offset; + + public Token(String string, int n) { + this.tokenString = string; + this.offset = n; + } + + @Override + public int getLength() { + return this.tokenString.length(); + } + + @Override + public int getOffset() { + return this.offset; + } + } + + public STPCompletionProcessor() { + this.stpMetadataSingleton = STPMetadataSingleton.getInstance(); + } + + /* (non-Javadoc) + * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeCompletionProposals(org.eclipse.jface.text.ITextViewer, int) + */ + @Override + public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, + int offset) { + return computeCompletionProposals(viewer.getDocument(), offset); + } + + public ICompletionProposal[] computeCompletionProposals(IDocument document, int offset) { + + ITypedRegion partition = null; + boolean useGlobal = false; + + try { + partition = + ((IDocumentExtension3) document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, offset, false); + if (partition.getOffset() == offset) { + if (partition.getType() != IDocument.DEFAULT_CONTENT_TYPE && partition.getType() != STPProbeScanner.STP_PROBE) { + if (offset > 0) { + ITypedRegion prevPartition = + ((IDocumentExtension3) document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, offset - 1, false); + useGlobal = prevPartition.getType() == IDocument.DEFAULT_CONTENT_TYPE; + } else { + useGlobal = true; + } + } + } + } catch (BadLocationException e1) { + return NO_COMPLETIONS; + } catch (BadPartitioningException e) { + return NO_COMPLETIONS; + } + + String prefix = ""; //$NON-NLS-1$ + String prePrefix = ""; //$NON-NLS-1$ + + // Get completion hint from document + try { + prefix = getPrefix(document, offset); + Token previousToken = getPrecedingToken(document, offset - prefix.length() - 1); + + while (previousToken.tokenString.equals("=") || //$NON-NLS-1$ + previousToken.tokenString.equals(",") ) { //$NON-NLS-1$ + previousToken = getPrecedingToken(document, previousToken.offset - 1); + previousToken = getPrecedingToken(document, previousToken.offset - 1); + } + + prePrefix = previousToken.tokenString; + + } catch (BadLocationException e) { + return NO_COMPLETIONS; + } + + if (prePrefix.startsWith("probe")) { //$NON-NLS-1$ + return getProbeCompletionList(prefix, offset); + } + + // If inside a probe return probe variable completions and functions + // which can be called. + if (partition.getType() == STPProbeScanner.STP_PROBE) { + ICompletionProposal[] variableCompletions = getProbeVariableCompletions(document, offset, prefix); + ICompletionProposal[] functionCompletions = getFunctionCompletions(offset, prefix); + + ArrayList<ICompletionProposal> completions = new ArrayList<>( + variableCompletions.length + functionCompletions.length); + completions.addAll(Arrays.asList(variableCompletions)); + completions.addAll(Arrays.asList(functionCompletions)); + + return completions.toArray(new ICompletionProposal[0]); + } else if (partition.getType() == IDocument.DEFAULT_CONTENT_TYPE || useGlobal) { + // In the global scope return global keyword completion. + return getGlobalKeywordCompletion(prefix, offset); + } + + return NO_COMPLETIONS; + } + + private ICompletionProposal[] getFunctionCompletions(int offset, + String prefix) { + String[] completionData = stpMetadataSingleton.getFunctionCompletions(prefix); + ICompletionProposal[] result = new ICompletionProposal[completionData.length]; + int prefixLength = prefix.length(); + for (int i = 0; i < completionData.length; i++) { + result[i] = new CompletionProposal( + completionData[i].substring(prefixLength) + "()", //$NON-NLS-1$ + offset, + 0, + completionData[i].length() - prefixLength + 1, + null, + completionData[i] + " - function", //$NON-NLS-1$ + null, + TapsetLibrary.getAndCacheDocumentation("function::" + completionData[i])); //$NON-NLS-1$ + } + + return result; + } + + private ICompletionProposal[] getProbeVariableCompletions(IDocument document, int offset, String prefix) { + try { + String probe; + probe = getProbe(document, offset); + String[] completionData = stpMetadataSingleton + .getProbeVariableCompletions(probe, prefix); + ICompletionProposal[] result = new ICompletionProposal[completionData.length]; + + int prefixLength = prefix.length(); + for (int i = 0; i < completionData.length; i++) { + int endIndex = completionData[i].indexOf(':'); + String variableName = completionData[i].substring(0, endIndex); + result[i] = new CompletionProposal(completionData[i].substring( + prefixLength, endIndex), + offset, + 0, + endIndex - prefixLength, + null, + completionData[i] + " - variable", //$NON-NLS-1$ + null, + TapsetLibrary.getAndCacheDocumentation("probe::" + probe + "::" + variableName)); //$NON-NLS-1$ //$NON-NLS-2$ + } + return result; + } catch (BadLocationException e) { + return NO_COMPLETIONS; + } catch (BadPartitioningException e) { + return NO_COMPLETIONS; + } + } + + /** + * Returns the full name of the probe surrounding the given + * offset. This function assumes that the given offset is inside + * of a {@link STPPartitionScanner#STP_PROBE} section. + * @param document + * @param offset + * @return the probe name + * @throws BadLocationException + * @throws BadPartitioningException + */ + private String getProbe(IDocument document, int offset) throws BadLocationException, BadPartitioningException { + String probePoint = null; + + ITypedRegion partition + = ((IDocumentExtension3)document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, + offset, false); + String probe = document.get(partition.getOffset(), partition.getLength()); + + // make sure that we are inside a probe + if (probe.startsWith(PROBE_KEYWORD)) { + probePoint = probe.substring(PROBE_KEYWORD.length(), probe.indexOf('{')); + probePoint = probePoint.trim(); + } + + return probePoint; + } + + private ICompletionProposal[] getProbeCompletionList(String prefix, int offset) { + prefix = canonicalizePrefix(prefix); + String[] completionData = stpMetadataSingleton.getProbeCompletions(prefix); + + ICompletionProposal[] result = new ICompletionProposal[completionData.length]; + for (int i = 0; i < completionData.length; i++) { + result[i] = new CompletionProposal( + completionData[i].substring(prefix.length()), + offset, + 0, + completionData[i].length() - prefix.length(), + null, + completionData[i], + null, + TapsetLibrary.getAndCacheDocumentation("probe::" + completionData[i])); //$NON-NLS-1$ + } + return result; + + } + + /** + * Returns a standardized version of the given prefix so that completion matching + * can be performed. + * For example for process("/some/long/path") this returns process(string); + * @param prefix + * @return + */ + private String canonicalizePrefix(String prefix) { + + if (prefix.isEmpty()) { + return ""; //$NON-NLS-1$ + } + prefix = prefix.replaceAll("(?s)\\(\\s*\".*\"\\s*\\)", "(string)"); //$NON-NLS-1$ //$NON-NLS-2$ + prefix = prefix.replaceAll("(?s)\\(\\s*\\d*\\s*\\)", "(number)"); //$NON-NLS-1$ //$NON-NLS-2$ + return prefix; + } + + private ICompletionProposal[] getGlobalKeywordCompletion(String prefix, int offset) { + + ArrayList<ICompletionProposal> completions = new ArrayList<>(); + int prefixLength = prefix.length(); + for (String[] keyword : GLOBAL_KEYWORDS) { + if (keyword[0].startsWith(prefix)) { + CompletionProposal proposal = new CompletionProposal( + keyword[0].substring(prefixLength), + offset, + 0, + keyword[0].length() - prefixLength, + null, + keyword[0], + new ContextInformation("contextDisplayString", "informationDisplayString"), //$NON-NLS-1$ //$NON-NLS-2$ + keyword[1]); + completions.add(proposal); + } + } + return completions.toArray(new ICompletionProposal[0]); + } + + /** + * Returns the token preceding the current completion position. + * @param doc The document for the which the completion is requested. + * @param prefix The prefix for which the user has requested completion. + * @param offset Current offset in the document + * @return The preceding token. + * @throws BadLocationException + */ + private Token getPrecedingToken(IDocument doc, int offset) throws BadLocationException { + // Skip trailing space + int n = offset; + while (n >= 0 && Character.isSpaceChar(doc.getChar(n))) { + n--; + } + + char c = doc.getChar(n); + if (isTokenDelimiter(c)) { + return new Token(Character.toString(c), n); + } + + int end = n; + while (n >= 0 && !isTokenDelimiter((doc.getChar(n)))) { + n--; + } + + return new Token(doc.get(n+1, end-n), n+1); + } + + private Token getCurrentToken(IDocument doc, int offset) throws BadLocationException { + char c = doc.getChar(offset); + + if (isDelimiter(c)) { + return new Token(Character.toString(c), offset); + } + + int start = offset; + while (start >= 0 && !isDelimiter((doc.getChar(start)))) { + start--; + } + + int end = offset; + while (end < doc.getLength() && !isDelimiter((doc.getChar(end)))) { + end++; + } + + start++; + return new Token(doc.get(start, end-start), start); + } + + /** + * + * Return the word the user wants to submit for completion proposals. + * + * @param doc - document to insert completion. + * @param offset - offset of where completion hint was first generated. + * @return - word to generate completion proposals. + * + * @throws BadLocationException + */ + private String getPrefix(IDocument doc, int offset) + throws BadLocationException { + + for (int n = offset - 1; n >= 0; n--) { + char c = doc.getChar(n); + if (isTokenDelimiter(c)) { + String word = doc.get(n + 1, offset - n - 1); + return word; + } + } + return ""; //$NON-NLS-1$ + } + + private boolean isTokenDelimiter(char c) { + if (Character.isWhitespace(c)) { + return true; + } + + switch (c) { + case '\n': + case '\0': + case ',': + case '{': + case '}': + case ']': + case '[': + return true; + } + return false; + } + + private boolean isDelimiter (char c) { + + if (isTokenDelimiter(c)) { + return true; + } + + switch (c) { + case '(': + case ')': + return true; + } + return false; + } + + public void waitForInitialization() { + this.stpMetadataSingleton.waitForInitialization(); + } + + /* (non-Javadoc) + * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeContextInformation(org.eclipse.jface.text.ITextViewer, int) + */ + @Override + public IContextInformation[] computeContextInformation(ITextViewer viewer, + int offset) { + return NO_CONTEXTS; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getCompletionProposalAutoActivationCharacters() + */ + @Override + public char[] getCompletionProposalAutoActivationCharacters() { + return PROPOSAL_ACTIVATION_CHARS; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationAutoActivationCharacters() + */ + @Override + public char[] getContextInformationAutoActivationCharacters() { + return PROPOSAL_ACTIVATION_CHARS; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationValidator() + */ + @Override + public IContextInformationValidator getContextInformationValidator() { + return null; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getErrorMessage() + */ + @Override + public String getErrorMessage() { + // TODO: When does this trigger? + return "Error."; //$NON-NLS-1$ + } + + @Override + public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) { + String documentation = null; + try { + String keyword = textViewer.getDocument().get(hoverRegion.getOffset(), hoverRegion.getLength()); + + documentation = TapsetLibrary.getDocumentation("function::" + keyword); //$NON-NLS-1$ + if (!documentation.startsWith("No manual entry for")) { //$NON-NLS-1$ + return documentation; + } + + documentation = TapsetLibrary.getDocumentation("probe::" + keyword); //$NON-NLS-1$ + if (!documentation.startsWith("No manual entry for")) { //$NON-NLS-1$ + return documentation; + } + + documentation = TapsetLibrary.getDocumentation("tapset::" + keyword); //$NON-NLS-1$ + if (!documentation.startsWith("No manual entry for")) { //$NON-NLS-1$ + return documentation; + } + + if (keyword.indexOf('.') > 0) { + keyword = keyword.split("\\.")[0]; //$NON-NLS-1$ + documentation = TapsetLibrary.getDocumentation("tapset::" + keyword); //$NON-NLS-1$ + } + + IDocument document = textViewer.getDocument(); + ITypedRegion partition = + ((IDocumentExtension3)document).getPartition(STPProbeScanner.STP_PROBE_PARTITIONING, + hoverRegion.getOffset(), false); + if (partition.getType() == STPProbeScanner.STP_PROBE) { + String probe = getProbe(textViewer.getDocument(), hoverRegion.getOffset()); + documentation = TapsetLibrary.getDocumentation("probe::" + probe + "::"+ keyword); //$NON-NLS-1$ //$NON-NLS-2$ + } + + } catch (BadLocationException e) { + // Bad hover location; just ignore it. + } catch (BadPartitioningException e) { + // Bad hover scenario, just ignore it. + } + + return documentation; + } + + @Override + public IRegion getHoverRegion(ITextViewer textViewer, int offset) { + try { + return getCurrentToken(textViewer.getDocument(), offset); + } catch (BadLocationException e) { + // Bad hover location; just ignore it. + } + + return null; + } }
\ No newline at end of file |