/**
* This method performs checks on the constant name which are quick enough to be performed every
* time the ui input component contents are changed.
*
* @return return the resulting status
* @throws JavaModelException thrown when the operation could not be executed
*/
public RefactoringStatus checkConstantNameOnChange() throws JavaModelException {
if (Arrays.asList(getExcludedVariableNames()).contains(fConstantName))
return RefactoringStatus.createErrorStatus(
Messages.format(
RefactoringCoreMessages.ExtractConstantRefactoring_another_variable,
BasicElementLabels.getJavaElementName(getConstantName())));
return Checks.checkConstantName(fConstantName, fCu);
}
@Override
/**
* Checks the final conditions in order to perform the refactoring. Specifically, we check if the
* variable is used in only a single lower scope than it is declared in, and if this check fails
* for any reason, the appropriate error status is set.
*/
public RefactoringStatus checkFinalConditions(IProgressMonitor pm)
throws CoreException, OperationCanceledException {
RefactoringStatus status = new RefactoringStatus();
ICompilationUnit Unit = method.getCompilationUnit();
compilationUnit = parse(Unit, pm);
try {
pm.beginTask("Checking validity...", 1);
// Do the work to check the final conditions
variableVisitor = new LocalVarVisitor(this);
variableVisitor.visit(compilationUnit);
compilationUnit.accept(variableVisitor);
// Now check for any errors that may be present
ASTNode sp = variableVisitor.getScopeParent();
ASTNode lsp = variableVisitor.getLowerScopeParent();
if (sp == null) {
// the variable was never found
setRefactoringStatus(VARIABLE_NOT_FOUND);
} else if (lsp == null) {
setRefactoringStatus(NO_SCOPE_TO_REDUCE_TO);
}
if (refactoringStatus == VARIABLE_USED_IN_DECLARING_SCOPE) {
status.merge(
RefactoringStatus.createErrorStatus(
varName
+ " in method "
+ method.getElementName()
+ " is used in the same scope it is declared in."));
} else if (refactoringStatus == VARIABLE_IS_FIELD) {
status.merge(
RefactoringStatus.createErrorStatus(
varName + " is a field variable and" + " its scope cannot be reduced."));
} else if (refactoringStatus == NO_SCOPE_TO_REDUCE_TO) {
status.merge(
RefactoringStatus.createErrorStatus(
"No scope to possibly reduce "
+ varName
+ " in method "
+ method.getElementName()
+ " to."));
} else if (refactoringStatus == VARIABLE_USED_IN_MULTIPLE_LOWER_SCOPES) {
status.merge(
RefactoringStatus.createErrorStatus(
varName
+ " is used in multiple lower scopes"
+ " and cannot be reduced in method "
+ method.getElementName()));
} else if (refactoringStatus == VARIABLE_FIRST_INITIALIZED_IN_FOR_DECLARATION) {
status.merge(
RefactoringStatus.createErrorStatus(
varName
+ " is first initialized in a for loop"
+ " and cannot be reduced in method "
+ method.getElementName()));
} else if (refactoringStatus == VARIABLE_NOT_FOUND) {
status.merge(
RefactoringStatus.createErrorStatus(varName + " not found in method " + method));
}
} finally {
pm.done();
}
return status;
}
