private IType getReturnType() {
ICPPASTFunctionDeclarator lambdaDtor = fLambdaExpression.getDeclarator();
if (lambdaDtor != null) {
IASTTypeId trailingReturnType = lambdaDtor.getTrailingReturnType();
if (trailingReturnType != null) {
return CPPVisitor.createType(trailingReturnType);
}
}
IASTCompoundStatement body = fLambdaExpression.getBody();
if (body != null) {
IASTStatement[] stmts = body.getStatements();
if (stmts.length > 0) {
// Gnu extension allows to deduce return type in complex compound statements
IASTStatement stmt = stmts[stmts.length - 1];
if (stmt instanceof IASTReturnStatement) {
IASTReturnStatement rtstmt = (IASTReturnStatement) stmt;
IASTExpression expr = rtstmt.getReturnValue();
if (expr != null) {
IType type = expr.getExpressionType();
type = Conversions.lvalue_to_rvalue(type, false);
if (type != null) {
return type;
}
}
}
}
}
return CPPSemantics.VOID_TYPE;
}
private IType[] getParameterTypes() {
ICPPASTFunctionDeclarator lambdaDtor = fLambdaExpression.getDeclarator();
if (lambdaDtor != null) {
return CPPVisitor.createParameterTypes(lambdaDtor);
}
return IType.EMPTY_TYPE_ARRAY;
}
private ICPPMethod[] createMethods() {
boolean needConversionOperator =
fLambdaExpression.getCaptureDefault() == CaptureDefault.UNSPECIFIED
&& fLambdaExpression.getCaptures().length == 0;
final ICPPClassScope scope = getCompositeScope();
ICPPMethod[] result = new ICPPMethod[needConversionOperator ? 6 : 5];
// Deleted default constructor: A()
CPPImplicitConstructor ctor =
new CPPImplicitConstructor(
scope, CharArrayUtils.EMPTY, ICPPParameter.EMPTY_CPPPARAMETER_ARRAY);
ctor.setDeleted(true);
result[0] = ctor;
// Copy constructor: A(const A &)
IType pType = new CPPReferenceType(SemanticUtil.constQualify(this), false);
ICPPParameter[] ps = new ICPPParameter[] {new CPPParameter(pType, 0)};
ctor = new CPPImplicitConstructor(scope, CharArrayUtils.EMPTY, ps);
result[1] = ctor;
// Deleted copy assignment operator: A& operator = (const A &)
IType refType = new CPPReferenceType(this, false);
ICPPFunctionType ft = CPPVisitor.createImplicitFunctionType(refType, ps, false, false);
ICPPMethod m = new CPPImplicitMethod(scope, OverloadableOperator.ASSIGN.toCharArray(), ft, ps);
result[2] = m;
// Destructor: ~A()
ft =
CPPVisitor.createImplicitFunctionType(
NO_RETURN_TYPE, ICPPParameter.EMPTY_CPPPARAMETER_ARRAY, false, false);
m = new CPPImplicitMethod(scope, new char[] {'~'}, ft, ICPPParameter.EMPTY_CPPPARAMETER_ARRAY);
result[3] = m;
// Function call operator
final IType returnType = getReturnType();
final IType[] parameterTypes = getParameterTypes();
ft = new CPPFunctionType(returnType, parameterTypes, !isMutable(), false, false);
ICPPParameter[] params = new ICPPParameter[parameterTypes.length];
for (int i = 0; i < params.length; i++) {
params[i] = new CPPParameter(parameterTypes[i], i);
}
m =
new CPPImplicitMethod(scope, OverloadableOperator.PAREN.toCharArray(), ft, params) {
@Override
public boolean isImplicit() {
return false;
}
};
result[4] = m;
// Conversion operator
if (needConversionOperator) {
final CPPFunctionType conversionTarget = new CPPFunctionType(returnType, parameterTypes);
ft = new CPPFunctionType(conversionTarget, IType.EMPTY_TYPE_ARRAY, true, false, false);
m =
new CPPImplicitMethod(
scope, CPPASTConversionName.createName(conversionTarget, null), ft, params);
result[5] = m;
}
return result;
}
private boolean isMutable() {
ICPPASTFunctionDeclarator lambdaDtor = fLambdaExpression.getDeclarator();
return lambdaDtor != null && lambdaDtor.isMutable();
}