Java Code Examples for org.eclipse.jdt.core.compiler.CharOperation#occurencesOf()

public TypeReferencePattern(char[] qualification, char[] simpleName, int matchRule) {
	this(matchRule);

	this.qualification = this.isCaseSensitive ? qualification : CharOperation.toLowerCase(qualification);
	this.simpleName = (this.isCaseSensitive || this.isCamelCase) ? simpleName : CharOperation.toLowerCase(simpleName);

	if (simpleName == null)
		this.segments = this.qualification == null ? ONE_STAR_CHAR : CharOperation.splitOn('.', this.qualification);
	else
		this.segments = null;

	if (this.segments == null)
		if (this.qualification == null)
			this.segmentsSize =  0;
		else
			this.segmentsSize =  CharOperation.occurencesOf('.', this.qualification) + 1;
	else
		this.segmentsSize = this.segments.length;

	this.mustResolve = true; // always resolve (in case of a simple name reference being a potential match)
}
 

public TypeReferencePattern(char[] qualification, char[] simpleName, String typeSignature, int limitTo, char typeSuffix, int matchRule) {
	this(qualification, simpleName,matchRule);
	this.typeSuffix = typeSuffix;
	if (typeSignature != null) {
		// store type signatures and arguments
		this.typeSignatures = Util.splitTypeLevelsSignature(typeSignature);
		setTypeArguments(Util.getAllTypeArguments(this.typeSignatures));
		if (hasTypeArguments()) {
			this.segmentsSize = getTypeArguments().length + CharOperation.occurencesOf('/', this.typeSignatures[0]) - 1;
		}
	}
    this.fineGrain = limitTo & 0xFFFFFFF0;
    if (this.fineGrain == IJavaSearchConstants.ANNOTATION_TYPE_REFERENCE) {
    	this.categories = CATEGORIES_ANNOT_REF;
    }
}
 

protected void reportDeclaration(ASTNode reference, IJavaElement element, MatchLocator locator, SimpleSet knownTypes) throws CoreException {
	int maxType = -1;
	TypeBinding typeBinding = null;
	if (reference instanceof TypeReference) {
		typeBinding = ((TypeReference) reference).resolvedType;
		maxType = Integer.MAX_VALUE;
	} else if (reference instanceof QualifiedNameReference) {
		QualifiedNameReference qNameRef = (QualifiedNameReference) reference;
		Binding binding = qNameRef.binding;
		maxType = qNameRef.tokens.length - 1;
		switch (qNameRef.bits & ASTNode.RestrictiveFlagMASK) {
			case Binding.FIELD : // reading a field
				typeBinding = qNameRef.actualReceiverType;
				maxType -= qNameRef.otherBindings == null ? 1 : qNameRef.otherBindings.length + 1;
				break;
			case Binding.TYPE : //=============only type ==============
				if (binding instanceof TypeBinding)
					typeBinding = (TypeBinding) binding;
				break;
			case Binding.VARIABLE : //============unbound cases===========
			case Binding.TYPE | Binding.VARIABLE :
				if (binding instanceof ProblemFieldBinding) {
					typeBinding = qNameRef.actualReceiverType;
					maxType -= qNameRef.otherBindings == null ? 1 : qNameRef.otherBindings.length + 1;
				} else if (binding instanceof ProblemBinding) {
					ProblemBinding pbBinding = (ProblemBinding) binding;
					typeBinding = pbBinding.searchType; // second chance with recorded type so far
					char[] partialQualifiedName = pbBinding.name;
					maxType = CharOperation.occurencesOf('.', partialQualifiedName) - 1; // index of last bound token is one before the pb token
					if (typeBinding == null || maxType < 0) return;
				}
				break;
		}
	} else if (reference instanceof SingleNameReference) {
		typeBinding = (TypeBinding) ((SingleNameReference) reference).binding;
		maxType = 1;
	}

	if (typeBinding instanceof ArrayBinding)
		typeBinding = ((ArrayBinding) typeBinding).leafComponentType;
	if (typeBinding == null || typeBinding instanceof BaseTypeBinding) return;
	if (typeBinding instanceof ProblemReferenceBinding) {
		TypeBinding original = typeBinding.closestMatch();
		if (original == null) return; // original may not be set (bug 71279)
		typeBinding = original;
	}
	typeBinding = typeBinding.erasure();
	reportDeclaration((ReferenceBinding) typeBinding, maxType, locator, knownTypes);
}
 

protected int resolveLevel(NameReference nameRef) {
	Binding binding = nameRef.binding;

	if (nameRef instanceof SingleNameReference) {
		if (binding instanceof ProblemReferenceBinding)
			binding = ((ProblemReferenceBinding) binding).closestMatch();
		if (binding instanceof ReferenceBinding)
			return resolveLevelForType((ReferenceBinding) binding);
		return binding == null || binding instanceof ProblemBinding ? INACCURATE_MATCH : IMPOSSIBLE_MATCH;
	}

	TypeBinding typeBinding = null;
	QualifiedNameReference qNameRef = (QualifiedNameReference) nameRef;
	switch (qNameRef.bits & ASTNode.RestrictiveFlagMASK) {
		case Binding.FIELD : // reading a field
			if (qNameRef.tokens.length < (qNameRef.otherBindings == null ? 2 : qNameRef.otherBindings.length + 2))
				return IMPOSSIBLE_MATCH; // must be at least A.x
			typeBinding = nameRef.actualReceiverType;
			break;
		case Binding.LOCAL : // reading a local variable
			return IMPOSSIBLE_MATCH; // no type match in it
		case Binding.TYPE : //=============only type ==============
			if (binding instanceof TypeBinding)
				typeBinding = (TypeBinding) binding;
			break;
		/*
		 * Handling of unbound qualified name references. The match may reside in the resolved fragment,
		 * which is recorded inside the problem binding, along with the portion of the name until it became a problem.
		 */
		case Binding.VARIABLE : //============unbound cases===========
		case Binding.TYPE | Binding.VARIABLE :
			if (binding instanceof ProblemReferenceBinding) {
				typeBinding = (TypeBinding) binding;
			} else if (binding instanceof ProblemFieldBinding) {
				if (qNameRef.tokens.length < (qNameRef.otherBindings == null ? 2 : qNameRef.otherBindings.length + 2))
					return IMPOSSIBLE_MATCH; // must be at least A.x
				typeBinding = nameRef.actualReceiverType;
			} else if (binding instanceof ProblemBinding) {
				ProblemBinding pbBinding = (ProblemBinding) binding;
				if (CharOperation.occurencesOf('.', pbBinding.name) <= 0) // index of last bound token is one before the pb token
					return INACCURATE_MATCH;
				typeBinding = pbBinding.searchType;
			}
			break;
	}
	return resolveLevel(typeBinding);
}
 

/**
 * In case emulating local variables, wrap the (recovered) statements inside a
 * try statement so as to achieve local state commiting (copy local vars back to fields).
 * The CSToCuMapper could not be used, since it could have interfered with
 * the syntax recovery specific to code snippets.
 */
protected void consumeMethodDeclaration(boolean isNotAbstract, boolean isDefaultMethod) {
	// MethodDeclaration ::= MethodHeader MethodBody
	// AbstractMethodDeclaration ::= MethodHeader ';'

	super.consumeMethodDeclaration(isNotAbstract, isDefaultMethod);

	// now we know that we have a method declaration at the top of the ast stack
	MethodDeclaration methodDecl = (MethodDeclaration) this.astStack[this.astPtr];

	// automatically wrap the last statement inside a return statement, if it is an expression
	// support have to be defined at toplevel only
	if (isTopLevelType()) {
		int last = methodDecl.statements == null ? -1 : methodDecl.statements.length - 1;
		if (last >= 0 && methodDecl.statements[last] instanceof Expression){
			Expression lastExpression = (Expression) methodDecl.statements[last];
			methodDecl.statements[last] = new CodeSnippetReturnStatement(
											lastExpression,
											lastExpression.sourceStart,
											lastExpression.sourceEnd);
		}
	}

	int start = methodDecl.bodyStart-1, end = start;
	long position = ((long)start << 32) + end;
	long[] positions = new long[]{position};
	if (this.evaluationContext.localVariableNames != null) {

		int varCount = this.evaluationContext.localVariableNames.length; // n local decls+ try statement

		// generate n local variable declarations: [type] [name] = val$[name];
		Statement[] newStatements = new Statement[varCount+1];
		for (int i = 0; i < varCount; i++){
			char[] trimmedTypeName = this.evaluationContext.localVariableTypeNames[i];
			int nameEnd = CharOperation.indexOf('[', trimmedTypeName);
			if (nameEnd >= 0) {
				trimmedTypeName = CharOperation.subarray(trimmedTypeName, 0, nameEnd);
			}
			nameEnd = CharOperation.indexOf(' ', trimmedTypeName);
			if (nameEnd >= 0) {
				trimmedTypeName = CharOperation.subarray(trimmedTypeName, 0, nameEnd);
			}
			TypeReference typeReference;
			if (CharOperation.indexOf('.', trimmedTypeName) == -1) {
				typeReference = new SingleTypeReference(trimmedTypeName, position);
			} else {
				typeReference = new QualifiedTypeReference(
						CharOperation.splitOn('.', trimmedTypeName),
						positions);
			}
			int dimCount = CharOperation.occurencesOf('[', this.evaluationContext.localVariableTypeNames[i]);
			if (dimCount > 0) {
				typeReference = augmentTypeWithAdditionalDimensions(typeReference, dimCount, null, false);
			}
			NameReference init = new SingleNameReference(
									CharOperation.concat(LOCAL_VAR_PREFIX, this.evaluationContext.localVariableNames[i]), position);
			LocalDeclaration declaration = new LocalDeclaration(this.evaluationContext.localVariableNames[i], start, end);
			declaration.initialization = init;
			declaration.type = typeReference;
			declaration.modifiers = this.evaluationContext.localVariableModifiers[i];
			newStatements[i] = declaration;
		}

		// generate try { [snippet] } finally { [save locals to fields] }
		// try block
		TryStatement tryStatement = new TryStatement();
		Block tryBlock = new Block(methodDecl.explicitDeclarations);
		tryBlock.sourceStart = start;
		tryBlock.sourceEnd = end;
		tryBlock.statements = methodDecl.statements; // snippet statements
		tryStatement.tryBlock = tryBlock;
		// finally block
		Block finallyBlock = new Block(0);
		finallyBlock.sourceStart = start;
		finallyBlock.sourceEnd = end;
		finallyBlock.statements = new Statement[varCount];
		for (int i = 0; i < varCount; i++){
			SingleNameReference nameRef = new SingleNameReference(this.evaluationContext.localVariableNames[i], position);
			finallyBlock.statements[i] = new Assignment(
				new SingleNameReference(CharOperation.concat(LOCAL_VAR_PREFIX, this.evaluationContext.localVariableNames[i]), position),
				nameRef,
				nameRef.sourceEnd);
		}
		tryStatement.finallyBlock = finallyBlock;

		newStatements[varCount] = tryStatement;
		methodDecl.statements = newStatements;
	}
}
 

public int depth() {
	// we don't yet have our enclosing types wired, but we know the nesting depth from our compoundName:
	int last = this.compoundName.length-1;
	return CharOperation.occurencesOf('$', this.compoundName[last]);
}