/**
* Returns the type signature of the declaring type of a <code>CompletionProposal</code>, or
* <code>null</code> for proposals that do not have a declaring type. The return value is
* <em>not</em> <code>null</code> for proposals of the following kinds:
*
* <ul>
* <li>METHOD_DECLARATION
* <li>METHOD_NAME_REFERENCE
* <li>METHOD_REF
* <li>ANNOTATION_ATTRIBUTE_REF
* <li>POTENTIAL_METHOD_DECLARATION
* <li>ANONYMOUS_CLASS_DECLARATION
* <li>FIELD_REF
* <li>PACKAGE_REF (returns the package, but no type)
* <li>TYPE_REF
* </ul>
*
* @param proposal the completion proposal to get the declaring type for
* @return the type signature of the declaring type, or <code>null</code> if there is none
*/
protected final char[] getDeclaringType(CompletionProposal proposal) {
switch (proposal.getKind()) {
case CompletionProposal.METHOD_DECLARATION:
case CompletionProposal.METHOD_NAME_REFERENCE:
// case CompletionProposal.JAVADOC_METHOD_REF:
case CompletionProposal.METHOD_REF:
case CompletionProposal.ARGUMENT_LIST:
case CompletionProposal.CONSTRUCTOR_INVOCATION:
// case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
// case CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER:
// case CompletionProposal.ANNOTATION_ATTRIBUTE_REF:
case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
// case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
case CompletionProposal.FIELD_REF:
// case CompletionProposal.FIELD_REF_WITH_CASTED_RECEIVER:
// case CompletionProposal.JAVADOC_FIELD_REF:
// case CompletionProposal.JAVADOC_VALUE_REF:
char[] declaration = proposal.getDeclarationSignature();
// special methods may not have a declaring type: methods defined on arrays etc.
// Currently known: class literals don't have a declaring type - use Object
// if (declaration == null) {
// return "java.lang.Object".toCharArray(); //$NON-NLS-1$
// }
return Signature.toCharArray(declaration);
case CompletionProposal.LIBRARY_PREFIX:
return proposal.getDeclarationSignature();
// case CompletionProposal.JAVADOC_TYPE_REF:
case CompletionProposal.TYPE_REF:
return Signature.toCharArray(proposal.getSignature());
case CompletionProposal.LOCAL_VARIABLE_REF:
case CompletionProposal.VARIABLE_DECLARATION:
case CompletionProposal.KEYWORD:
case CompletionProposal.LABEL_REF:
case CompletionProposal.TYPE_IMPORT:
case CompletionProposal.OPTIONAL_ARGUMENT:
case CompletionProposal.NAMED_ARGUMENT:
// case CompletionProposal.JAVADOC_BLOCK_TAG:
// case CompletionProposal.JAVADOC_INLINE_TAG:
// case CompletionProposal.JAVADOC_PARAM_REF:
return null;
default:
Assert.isTrue(false);
return null;
}
}
private IDartCompletionProposal createMethodDeclarationProposal(CompletionProposal proposal) {
if (fCompilationUnit == null || fDartProject == null) {
return null;
}
String name = String.valueOf(proposal.getName());
String[] paramTypes = Signature.getParameterTypes(String.valueOf(proposal.getSignature()));
for (int index = 0; index < paramTypes.length; index++) {
paramTypes[index] = Signature.toString(paramTypes[index]);
}
int start = proposal.getReplaceStart();
int length = getLength(proposal);
StyledString label =
new StyledString(
fLabelProvider.createOverrideMethodProposalLabel(proposal)); // TODO(messick)
DartCompletionProposal dartProposal =
new OverrideCompletionProposal(
fDartProject,
fCompilationUnit,
name,
paramTypes,
start,
length,
getLengthIdentifier(proposal),
label,
String.valueOf(proposal.getCompletion()));
dartProposal.setImage(getImage(fLabelProvider.createMethodImageDescriptor(proposal)));
// TODO(scheglov) implement documentation comment
// dartProposal.setProposalInfo(new MethodProposalInfo(fDartProject, proposal));
dartProposal.setRelevance(computeRelevance(proposal));
fSuggestedMethodNames.add(new String(name));
return dartProposal;
}
private static StyledString getDisplayName(String methodName, String returnTypeSig) {
StyledString buf = new StyledString();
buf.append(methodName);
buf.append('(');
buf.append(')');
if (returnTypeSig != null) {
buf.append(" : "); // $NON-NLS-1$
buf.append(Signature.toString(returnTypeSig));
buf.append(" - ", StyledString.QUALIFIER_STYLER); // $NON-NLS-1$
buf.append(
DartTextMessages.MethodCompletionProposal_method_label, StyledString.QUALIFIER_STYLER);
} else {
buf.append(" - ", StyledString.QUALIFIER_STYLER); // $NON-NLS-1$
buf.append(
DartTextMessages.MethodCompletionProposal_constructor_label,
StyledString.QUALIFIER_STYLER);
}
return buf;
}
@Override
protected boolean updateReplacementString(
IDocument document, char trigger, int offset, ImportRewrite impRewrite)
throws CoreException, BadLocationException {
CodeGenerationSettings settings =
JavaPreferencesSettings.getCodeGenerationSettings(fType.getDartProject());
boolean addComments = settings.createComments;
String[] empty = new String[0];
String lineDelim = TextUtilities.getDefaultLineDelimiter(document);
@SuppressWarnings("deprecation")
String declTypeName = fType.getTypeQualifiedName('.');
boolean isInterface = fType.isInterface();
StringBuffer buf = new StringBuffer();
if (addComments) {
String comment =
CodeGeneration.getMethodComment(
fType.getCompilationUnit(),
declTypeName,
fMethodName,
empty,
empty,
fReturnTypeSig,
lineDelim);
if (comment != null) {
buf.append(comment);
buf.append(lineDelim);
}
}
if (fReturnTypeSig != null) {
buf.append(Signature.toString(fReturnTypeSig));
}
buf.append(' ');
buf.append(fMethodName);
if (isInterface) {
buf.append("();"); // $NON-NLS-1$
buf.append(lineDelim);
} else {
buf.append("() {"); // $NON-NLS-1$
buf.append(lineDelim);
String body =
CodeGeneration.getMethodBodyContent(
fType.getCompilationUnit(),
declTypeName,
fMethodName,
fReturnTypeSig == null,
"",
lineDelim); //$NON-NLS-1$
if (body != null) {
buf.append(body);
buf.append(lineDelim);
}
buf.append("}"); // $NON-NLS-1$
buf.append(lineDelim);
}
String stub = buf.toString();
// use the code formatter
IRegion region = document.getLineInformationOfOffset(getReplacementOffset());
int lineStart = region.getOffset();
int indent =
Strings.computeIndentUnits(
document.get(lineStart, getReplacementOffset() - lineStart),
settings.tabWidth,
settings.indentWidth);
String replacement =
CodeFormatterUtil.format(
CodeFormatter.K_CLASS_BODY_DECLARATIONS,
stub,
indent,
null,
lineDelim,
fType.getDartProject());
if (replacement.endsWith(lineDelim)) {
replacement = replacement.substring(0, replacement.length() - lineDelim.length());
}
setReplacementString(Strings.trimLeadingTabsAndSpaces(replacement));
return true;
}