/**
* Resolve the given source and verify that the arguments in a specific method invocation were
* correctly resolved.
*
* <p>The source is expected to be source for a compilation unit, the first declaration is
* expected to be a class, the first member of which is expected to be a method with a block body,
* and the first statement in the body is expected to be an expression statement whose expression
* is a method invocation. It is the arguments to that method invocation that are tested. The
* method invocation can contain errors.
*
* <p>The arguments were resolved correctly if the number of expressions in the list matches the
* length of the array of indices and if, for each index in the array of indices, the parameter to
* which the argument expression was resolved is the parameter in the invoked method's list of
* parameters at that index. Arguments that should not be resolved to a parameter because of an
* error can be denoted by including a negative index in the array of indices.
*
* @param source the source to be resolved
* @param indices the array of indices used to associate arguments with parameters
* @throws Exception if the source could not be resolved or if the structure of the source is not
* valid
*/
private void validateArgumentResolution(Source source, int... indices) throws Exception {
LibraryElement library = resolve(source);
assertNotNull(library);
ClassElement classElement = library.getDefiningCompilationUnit().getTypes()[0];
ParameterElement[] parameters = classElement.getMethods()[1].getParameters();
CompilationUnit unit = resolveCompilationUnit(source, library);
assertNotNull(unit);
ClassDeclaration classDeclaration = (ClassDeclaration) unit.getDeclarations().get(0);
MethodDeclaration methodDeclaration =
((MethodDeclaration) classDeclaration.getMembers().get(0));
Block block = ((BlockFunctionBody) methodDeclaration.getBody()).getBlock();
ExpressionStatement statement = (ExpressionStatement) block.getStatements().get(0);
MethodInvocation invocation = (MethodInvocation) statement.getExpression();
NodeList<Expression> arguments = invocation.getArgumentList().getArguments();
int argumentCount = arguments.size();
assertEquals(indices.length, argumentCount);
for (int i = 0; i < argumentCount; i++) {
Expression argument = arguments.get(i);
ParameterElement element = argument.getStaticParameterElement();
int index = indices[i];
if (index < 0) {
assertNull(element);
} else {
assertSame(parameters[index], element);
}
}
}
@Override
public Void visitClassDeclaration(ClassDeclaration node) {
ElementHolder holder = new ElementHolder();
visitChildren(holder, node);
SimpleIdentifier className = node.getName();
ClassElementImpl element = new ClassElementImpl(className);
MethodElement[] methods = holder.getMethods();
element.setAbstract(node.getAbstractKeyword() != null);
element.setAccessors(holder.getAccessors());
element.setConstructors(holder.getConstructors());
element.setFields(holder.getFields());
element.setMethods(methods);
TypeVariableElement[] typeVariables = holder.getTypeVariables();
element.setTypeVariables(typeVariables);
InterfaceTypeImpl interfaceType = new InterfaceTypeImpl(element);
int typeVariableCount = typeVariables.length;
Type[] typeArguments = new Type[typeVariableCount];
for (int i = 0; i < typeVariableCount; i++) {
TypeVariableElementImpl typeVariable = (TypeVariableElementImpl) typeVariables[i];
TypeVariableTypeImpl typeArgument = new TypeVariableTypeImpl(typeVariable);
typeVariable.setType(typeArgument);
typeArguments[i] = typeArgument;
}
interfaceType.setTypeArguments(typeArguments);
element.setType(interfaceType);
currentHolder.addType(element);
className.setElement(element);
return null;
}
public void test_visitClassDeclaration_parameterized() {
ElementHolder holder = new ElementHolder();
ElementBuilder builder = new ElementBuilder(holder);
String className = "C";
String firstVariableName = "E";
String secondVariableName = "F";
ClassDeclaration classDeclaration =
classDeclaration(
null,
className,
typeParameterList(firstVariableName, secondVariableName),
null,
null,
null);
classDeclaration.accept(builder);
ClassElement[] types = holder.getTypes();
assertLength(1, types);
ClassElement type = types[0];
assertNotNull(type);
assertEquals(className, type.getName());
TypeVariableElement[] typeVariables = type.getTypeVariables();
assertLength(2, typeVariables);
assertEquals(firstVariableName, typeVariables[0].getName());
assertEquals(secondVariableName, typeVariables[1].getName());
assertFalse(type.isAbstract());
assertFalse(type.isSynthetic());
}
public void test_visitClassDeclaration_withMembers() {
ElementHolder holder = new ElementHolder();
ElementBuilder builder = new ElementBuilder(holder);
String className = "C";
String typeVariableName = "E";
String fieldName = "f";
String methodName = "m";
ClassDeclaration classDeclaration =
classDeclaration(
null,
className,
typeParameterList(typeVariableName),
null,
null,
null,
fieldDeclaration(false, null, variableDeclaration(fieldName)),
methodDeclaration(
null,
null,
null,
null,
identifier(methodName),
formalParameterList(),
blockFunctionBody()));
classDeclaration.accept(builder);
ClassElement[] types = holder.getTypes();
assertLength(1, types);
ClassElement type = types[0];
assertNotNull(type);
assertEquals(className, type.getName());
assertFalse(type.isAbstract());
assertFalse(type.isSynthetic());
TypeVariableElement[] typeVariables = type.getTypeVariables();
assertLength(1, typeVariables);
TypeVariableElement typeVariable = typeVariables[0];
assertNotNull(typeVariable);
assertEquals(typeVariableName, typeVariable.getName());
FieldElement[] fields = type.getFields();
assertLength(1, fields);
FieldElement field = fields[0];
assertNotNull(field);
assertEquals(fieldName, field.getName());
MethodElement[] methods = type.getMethods();
assertLength(1, methods);
MethodElement method = methods[0];
assertNotNull(method);
assertEquals(methodName, method.getName());
}
@Override
public Void visitClassDeclaration(ClassDeclaration node) {
ElementHolder holder = new ElementHolder();
visitChildren(holder, node);
TypeElementImpl element = new TypeElementImpl(node.getName());
MethodElement[] methods = holder.getMethods();
element.setAbstract(node.getAbstractKeyword() != null || hasAbstractMethod(methods));
element.setAccessors(holder.getAccessors());
element.setConstructors(holder.getConstructors());
element.setFields(holder.getFields());
element.setMethods(methods);
element.setTypeVariables(holder.getTypeVariables());
currentHolder.addType(element);
return null;
}
public void test_visitClassDeclaration_minimal() {
ElementHolder holder = new ElementHolder();
ElementBuilder builder = new ElementBuilder(holder);
String className = "C";
ClassDeclaration classDeclaration = classDeclaration(null, className, null, null, null, null);
classDeclaration.accept(builder);
ClassElement[] types = holder.getTypes();
assertLength(1, types);
ClassElement type = types[0];
assertNotNull(type);
assertEquals(className, type.getName());
TypeVariableElement[] typeVariables = type.getTypeVariables();
assertLength(0, typeVariables);
assertFalse(type.isAbstract());
assertFalse(type.isSynthetic());
}
@Override
public Void visitClassDeclaration(ClassDeclaration node) {
ElementHolder holder = new ElementHolder();
isValidMixin = true;
functionTypesToFix = new ArrayList<FunctionTypeImpl>();
visitChildren(holder, node);
SimpleIdentifier className = node.getName();
ClassElementImpl element = new ClassElementImpl(className);
TypeParameterElement[] typeParameters = holder.getTypeParameters();
Type[] typeArguments = createTypeParameterTypes(typeParameters);
InterfaceTypeImpl interfaceType = new InterfaceTypeImpl(element);
interfaceType.setTypeArguments(typeArguments);
element.setType(interfaceType);
ConstructorElement[] constructors = holder.getConstructors();
if (constructors.length == 0) {
//
// Create the default constructor.
//
constructors = createDefaultConstructors(interfaceType);
}
element.setAbstract(node.getAbstractKeyword() != null);
element.setAccessors(holder.getAccessors());
element.setConstructors(constructors);
element.setFields(holder.getFields());
element.setMethods(holder.getMethods());
element.setTypeParameters(typeParameters);
element.setValidMixin(isValidMixin);
int functionTypeCount = functionTypesToFix.size();
for (int i = 0; i < functionTypeCount; i++) {
functionTypesToFix.get(i).setTypeArguments(typeArguments);
}
functionTypesToFix = null;
currentHolder.addType(element);
className.setStaticElement(element);
holder.validate();
return null;
}
@Override
public Void visitClassDeclaration(ClassDeclaration node) {
visit(node.getAbstractKeyword(), " ");
writer.print("class ");
visit(node.getName());
visit(node.getTypeParameters());
visit(" ", node.getExtendsClause());
visit(" ", node.getWithClause());
visit(" ", node.getImplementsClause());
writer.print(" {");
visitList(node.getMembers(), " ");
writer.print("}");
return null;
}
@Override
public void process(final Context context, final CompilationUnit unit) {
NodeList<CompilationUnitMember> declarations = unit.getDeclarations();
// remove NodeList, it is declared in enginelib.dart
for (Iterator<CompilationUnitMember> iter = declarations.iterator(); iter.hasNext(); ) {
CompilationUnitMember member = iter.next();
if (member instanceof ClassDeclaration) {
ClassDeclaration classDeclaration = (ClassDeclaration) member;
String name = classDeclaration.getName().getName();
if (name.equals("NodeList")
|| name.equals("NodeLocator")
|| name.equals("NodeFoundException")) {
iter.remove();
}
}
}
// process nodes
unit.accept(
new GeneralizingASTVisitor<Void>() {
@Override
public Void visitMethodDeclaration(MethodDeclaration node) {
String name = node.getName().getName();
if ("accept".equals(name) && node.getParameters().getParameters().size() == 1) {
node.setReturnType(null);
FormalParameter formalParameter = node.getParameters().getParameters().get(0);
((SimpleFormalParameter) formalParameter).getType().setTypeArguments(null);
}
return super.visitMethodDeclaration(node);
}
@Override
public Void visitMethodInvocation(MethodInvocation node) {
if (isMethodInClass(
node, "toArray", "com.google.dart.engine.utilities.collection.IntList")) {
replaceNode(node, node.getTarget());
return null;
}
return super.visitMethodInvocation(node);
}
@Override
public Void visitTypeName(TypeName node) {
if (node.getName() instanceof SimpleIdentifier) {
SimpleIdentifier nameNode = (SimpleIdentifier) node.getName();
String name = nameNode.getName();
if ("IntList".equals(name)) {
replaceNode(node, typeName("List", typeName("int")));
return null;
}
}
return super.visitTypeName(node);
}
private boolean isMethodInClass(
MethodInvocation node, String reqName, String reqClassName) {
String name = node.getMethodName().getName();
return Objects.equal(name, reqName)
&& JavaUtils.isMethodInClass(context.getNodeBinding(node), reqClassName);
}
});
}
@Override
public R visitClassDeclaration(ClassDeclaration node) {
node.visitChildren(this);
return null;
}