public Expression transformVariableExpression(VariableExpression expr) {
// we need to transform variable expressions that go to a delegate
// to a property expression, as ACG would loose the information
// in processClassVariable before it reaches any makeCall, that could
// handle it
Object val = expr.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER);
if (val == null) return expr;
VariableExpression implicitThis = new VariableExpression("this");
// GRECLIPSE start
// Expressions positions should be added to make it possible to recognize correct AST nodes
// later
ConstantExpression ce = new ConstantExpression(expr.getName());
ce.setStart(expr.getStart());
ce.setEnd(expr.getEnd());
PropertyExpression pexp = new PropertyExpression(implicitThis, ce);
pexp.setStart(expr.getStart());
pexp.setEnd(expr.getEnd());
// GRECLIPSE end
pexp.copyNodeMetaData(expr);
pexp.setImplicitThis(true);
ClassNode owner = expr.getNodeMetaData(StaticCompilationMetadataKeys.PROPERTY_OWNER);
if (owner != null) {
implicitThis.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, owner);
implicitThis.putNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER, val);
}
return pexp;
}
public void visitVariableExpression(VariableExpression expression) {
String name = expression.getName();
Variable v = checkVariableNameForDeclaration(name, expression);
if (v == null) return;
expression.setAccessedVariable(v);
checkVariableContextAccess(v, expression);
}
private List<PropertyNode> findTags(ClassNode classNode) {
List<PropertyNode> tags = new ArrayList<PropertyNode>();
List<PropertyNode> properties = classNode.getProperties();
List<PropertyNode> potentialAliases = new ArrayList<PropertyNode>();
for (PropertyNode property : properties) {
if (property.isPublic()) {
Expression initialExpression = property.getInitialExpression();
if (initialExpression instanceof ClosureExpression) {
ClosureExpression ce = (ClosureExpression) initialExpression;
Parameter[] parameters = ce.getParameters();
if (parameters.length <= 2) {
tags.add(property);
// force Closure type for DefaultGrailsTagLibClass
property.setType(CLOSURE_CLASS_NODE);
}
} else if (initialExpression instanceof VariableExpression) {
potentialAliases.add(property);
}
}
}
for (PropertyNode potentialAlias : potentialAliases) {
VariableExpression pe = (VariableExpression) potentialAlias.getInitialExpression();
String propertyName = pe.getName();
PropertyNode property = classNode.getProperty(propertyName);
if (property != null && tags.contains(property)) {
potentialAlias.setType(CLOSURE_CLASS_NODE);
tags.add(potentialAlias);
}
}
return tags;
}
// Return false if the inference is illegal. Currently this only happens if the var is reassigned
// to incompatible
// type inside the loop.
public boolean add(VariableExpression ve, ClassNode type) {
if (defVars == null) defVars = FHashMap.emptyMap;
if (ve.getAccessedVariable() != null) {
defVars = defVars.put(ve.getAccessedVariable(), type);
// dumpMap(ve);
} else {
boolean done = false;
for (Map.Entry<Variable, ClassNode> variable : defVars.entrySet()) {
if (variable.getKey().getName().equals(ve.getName())) {
defVars = defVars.put(variable.getKey(), type);
// dumpMap(ve);
done = true;
break;
}
}
if (!done) {
defVars = defVars.put(ve, type);
// dumpMap(ve);
}
}
if (parentScopeInference != null && parentScopeInference.defVars != null) {
final ClassNode oldType = parentScopeInference.defVars.get(ve.getAccessedVariable());
if (oldType != null) {
if (!TypeUtil.isDirectlyAssignableFrom(oldType, type)) {
return false;
}
}
}
return true;
}
private ClassNode getConstructorArgumentType(Expression arg, ConstructorNode node) {
if (!(arg instanceof VariableExpression)) return arg.getType();
VariableExpression vexp = (VariableExpression) arg;
String name = vexp.getName();
for (Parameter param : node.getParameters()) {
if (param.getName().equals(name)) {
return param.getType();
}
}
return vexp.getType();
}
/**
* a property on "this", like this.x is transformed to a direct field access, so we need to check
* the static context here
*
* @param pe the property expression to check
*/
private void checkPropertyOnExplicitThis(PropertyExpression pe) {
if (!currentScope.isInStaticContext()) return;
Expression object = pe.getObjectExpression();
if (!(object instanceof VariableExpression)) return;
VariableExpression ve = (VariableExpression) object;
if (!ve.getName().equals("this")) return;
String name = pe.getPropertyAsString();
if (name == null || name.equals("class")) return;
Variable member = findClassMember(currentClass, name);
if (member == null) return;
checkVariableContextAccess(member, pe);
}
private void dumpMap(VariableExpression ve) {
System.out.print(ve.getName());
System.out.print(" ");
System.out.print(defVars.size());
System.out.print(" ");
for (Map.Entry<Variable, ClassNode> variable : defVars.entrySet()) {
System.out.print(variable.getKey().getName());
System.out.print("->");
System.out.print(variable.getValue().getNameWithoutPackage());
System.out.print(",");
}
System.out.println();
}
public ClassNode get(VariableExpression ve) {
if (defVars == null) return ClassHelper.OBJECT_TYPE;
else {
final Variable accessed = ve.getAccessedVariable();
if (accessed != null) return defVars.get(accessed);
else {
for (Map.Entry<Variable, ClassNode> variable : defVars.entrySet()) {
if (variable.getKey().getName().equals(ve.getName())) {
return variable.getValue();
}
}
return null;
}
}
}
private boolean isThisTraitReceiver(final VariableExpression var) {
return Traits.THIS_OBJECT.equals(var.getName());
}
private boolean isStaticTraitReceiver(final ClassNode receiver, final VariableExpression var) {
return Traits.STATIC_THIS_OBJECT.equals(var.getName())
&& isClassClassNodeWrappingConcreteType(receiver);
}
@Override
public List<ICompletionProposal> computeCompletionProposals(
final ContentAssistInvocationContext context, final IProgressMonitor monitor) {
final List<ICompletionProposal> list = new ArrayList<ICompletionProposal>();
boolean extendContext = false;
try {
if (context instanceof JavaContentAssistInvocationContext) {
final ITextViewer viewer = context.getViewer();
final List<ScriptVariable> scriptVariables = getScriptVariables(viewer);
if (scriptVariables.isEmpty()) {
return list;
}
final CompletionContext coreContext =
((JavaContentAssistInvocationContext) context).getCoreContext();
if (coreContext != null && !coreContext.isExtended()) {
// must use reflection to set the fields
ReflectionUtils.setPrivateField(
InternalCompletionContext.class, "isExtended", coreContext, true);
extendContext = true;
}
final ICompilationUnit unit =
((JavaContentAssistInvocationContext) context).getCompilationUnit();
if (unit instanceof GroovyCompilationUnit) {
if (((GroovyCompilationUnit) unit).getModuleNode() == null) {
return Collections.emptyList();
}
final ContentAssistContext assistContext =
new GroovyCompletionProposalComputer()
.createContentAssistContext(
(GroovyCompilationUnit) unit,
context.getInvocationOffset(),
context.getDocument());
CharSequence prefix = null;
try {
prefix = context.computeIdentifierPrefix();
} catch (final BadLocationException e) {
BonitaStudioLog.error(e);
}
if (assistContext != null && assistContext.completionNode instanceof VariableExpression) {
try {
final VariableExpression expr = (VariableExpression) assistContext.completionNode;
if (scriptVariables != null) {
for (final ScriptVariable f : scriptVariables) {
if (expr.getName().equals(f.getName())) {
final IType type = javaProject.findType(f.getType());
if (type == null) {
return list;
}
for (final IMethod m : type.getMethods()) {
if (m.getElementName().startsWith(prefix.toString())) {
final GroovyCompletionProposal proposal =
new GroovyCompletionProposal(
CompletionProposal.METHOD_REF, context.getInvocationOffset());
proposal.setName(m.getElementName().toCharArray());
proposal.setCompletion(
m.getElementName().substring(prefix.length()).toCharArray());
proposal.setFlags(m.getFlags());
if (prefix.length() == m.getElementName().length()) {
proposal.setReplaceRange(
context.getInvocationOffset(), context.getInvocationOffset());
proposal.setReceiverRange(0, 0);
} else {
proposal.setReplaceRange(
context.getInvocationOffset() - prefix.length(),
context.getInvocationOffset());
proposal.setReceiverRange(prefix.length(), prefix.length());
}
final char[][] parametersArray =
new char[m.getParameterNames().length][256];
final List<Parameter> parameters = new ArrayList<Parameter>();
for (int i = 0; i < m.getParameterNames().length; i++) {
parametersArray[i] = m.getParameterNames()[i].toCharArray();
parameters.add(
new Parameter(
ClassHelper.make(
Signature.getSignatureSimpleName(m.getParameterTypes()[i])),
m.getParameterNames()[i]));
}
final ClassNode classNode =
ClassHelper.make(m.getDeclaringType().getFullyQualifiedName());
proposal.setDeclarationSignature(
ProposalUtils.createTypeSignature(classNode));
proposal.setParameterNames(parametersArray);
if (m.getDeclaringType().getFullyQualifiedName().equals(f.getType())) {
proposal.setRelevance(100);
}
final MethodNode methodNode =
new MethodNode(
m.getElementName(),
m.getFlags(),
ClassHelper.make(
Signature.getSignatureSimpleName(m.getReturnType())),
parameters.toArray(new Parameter[parameters.size()]),
new ClassNode[0],
null);
final char[] methodSignature =
ProposalUtils.createMethodSignature(methodNode);
proposal.setSignature(methodSignature);
final GroovyJavaGuessingCompletionProposal groovyProposal =
GroovyJavaGuessingCompletionProposal.createProposal(
proposal,
(JavaContentAssistInvocationContext) context,
true,
"Groovy",
ProposalFormattingOptions.newFromOptions());
if (groovyProposal != null) {
list.add(groovyProposal);
}
}
}
}
}
}
} catch (final JavaModelException e) {
BonitaStudioLog.error(e);
}
}
}
return list;
}
} finally {
final CompletionContext coreContext =
((JavaContentAssistInvocationContext) context).getCoreContext();
if (extendContext && coreContext != null && coreContext.isExtended()) {
// must use reflection to set the fields
ReflectionUtils.setPrivateField(
InternalCompletionContext.class, "isExtended", coreContext, false);
}
}
return Collections.emptyList();
}
protected Expression transformMethodCallExpression(MethodCallExpression mce) {
Expression args = transform(mce.getArguments());
Expression method = transform(mce.getMethod());
Expression object = transform(mce.getObjectExpression());
boolean isExplicitThisOrSuper = false;
if (object instanceof VariableExpression) {
VariableExpression ve = (VariableExpression) object;
isExplicitThisOrSuper =
!mce.isImplicitThis() && (ve.getName().equals("this") || ve.getName().equals("super"));
}
if (mce.isImplicitThis() || isExplicitThisOrSuper) {
if (mce.isImplicitThis()) {
Expression ret = findStaticMethodImportFromModule(method, args);
if (ret != null) {
// GRECLIPSE add
if (!((StaticMethodCallExpression) ret).getMethod().equals(method.getText())) {
// store the identifier to facilitate organizing static imports
ret.setNodeMetaData("static.import.alias", method.getText());
}
// GRECLIPSE end
setSourcePosition(ret, mce);
return ret;
}
if (method instanceof ConstantExpression && !inLeftExpression) {
// could be a closure field
String methodName = (String) ((ConstantExpression) method).getValue();
ret = findStaticFieldOrPropAccessorImportFromModule(methodName);
if (ret != null) {
ret = new MethodCallExpression(ret, "call", args);
setSourcePosition(ret, mce);
return ret;
}
}
}
if (method instanceof ConstantExpression) {
ConstantExpression ce = (ConstantExpression) method;
Object value = ce.getValue();
if (value instanceof String) {
String methodName = (String) value;
boolean lookForPossibleStaticMethod = !methodName.equals("call");
if (currentMethod != null && !currentMethod.isStatic()) {
if (currentClass.hasPossibleMethod(methodName, args)) {
lookForPossibleStaticMethod = false;
}
}
if (inSpecialConstructorCall
|| (lookForPossibleStaticMethod
&& currentClass.hasPossibleStaticMethod(methodName, args))) {
StaticMethodCallExpression smce =
new StaticMethodCallExpression(currentClass, methodName, args);
setSourcePosition(smce, mce);
return smce;
}
}
}
}
MethodCallExpression result = new MethodCallExpression(object, method, args);
result.setSafe(mce.isSafe());
result.setImplicitThis(mce.isImplicitThis());
result.setSpreadSafe(mce.isSpreadSafe());
result.setMethodTarget(mce.getMethodTarget());
// GROOVY-6757
result.setGenericsTypes(mce.getGenericsTypes());
setSourcePosition(result, mce);
return result;
}