@Nullable
private static PsiMethod existingClassIsCompatible(PsiClass aClass, List<ParameterChunk> params) {
if (params.size() == 1) {
final ParameterChunk parameterChunk = params.get(0);
final PsiType paramType = parameterChunk.parameter.type;
if (TypeConversionUtil.isPrimitiveWrapper(aClass.getQualifiedName())) {
parameterChunk.setField(aClass.findFieldByName("value", false));
parameterChunk.setGetter(paramType.getCanonicalText() + "Value");
for (PsiMethod constructor : aClass.getConstructors()) {
if (constructorIsCompatible(constructor, params)) return constructor;
}
}
}
final PsiMethod[] constructors = aClass.getConstructors();
PsiMethod compatibleConstructor = null;
for (PsiMethod constructor : constructors) {
if (constructorIsCompatible(constructor, params)) {
compatibleConstructor = constructor;
break;
}
}
if (compatibleConstructor == null) {
return null;
}
final PsiParameterList parameterList = compatibleConstructor.getParameterList();
final PsiParameter[] constructorParams = parameterList.getParameters();
for (int i = 0; i < constructorParams.length; i++) {
final PsiParameter param = constructorParams[i];
final ParameterChunk parameterChunk = params.get(i);
final PsiField field = findFieldAssigned(param, compatibleConstructor);
if (field == null) {
return null;
}
parameterChunk.setField(field);
final PsiMethod getterForField = PropertyUtil.findGetterForField(field);
if (getterForField != null) {
parameterChunk.setGetter(getterForField.getName());
}
final PsiMethod setterForField = PropertyUtil.findSetterForField(field);
if (setterForField != null) {
parameterChunk.setSetter(setterForField.getName());
}
}
return compatibleConstructor;
}
private void findUsagesForMethod(
PsiMethod overridingMethod, List<FixableUsageInfo> usages, boolean changeSignature) {
final PsiCodeBlock body = overridingMethod.getBody();
final String baseParameterName = StringUtil.decapitalize(className);
final String fixedParamName =
body != null
? JavaCodeStyleManager.getInstance(myProject)
.suggestUniqueVariableName(baseParameterName, body.getLBrace(), true)
: JavaCodeStyleManager.getInstance(myProject)
.propertyNameToVariableName(baseParameterName, VariableKind.PARAMETER);
usages.add(
new MergeMethodArguments(
overridingMethod,
className,
packageName,
fixedParamName,
paramsToMerge,
typeParams,
keepMethodAsDelegate,
myCreateInnerClass ? method.getContainingClass() : null,
changeSignature));
final ParamUsageVisitor visitor = new ParamUsageVisitor(overridingMethod, paramsToMerge);
overridingMethod.accept(visitor);
final Set<PsiReferenceExpression> values = visitor.getParameterUsages();
for (PsiReferenceExpression paramUsage : values) {
final PsiParameter parameter = (PsiParameter) paramUsage.resolve();
assert parameter != null;
final PsiMethod containingMethod = (PsiMethod) parameter.getDeclarationScope();
final int index = containingMethod.getParameterList().getParameterIndex(parameter);
final PsiParameter replacedParameter = method.getParameterList().getParameters()[index];
final ParameterChunk parameterChunk =
ParameterChunk.getChunkByParameter(parameter, parameters);
@NonNls String getter = parameterChunk != null ? parameterChunk.getter : null;
final String paramName =
parameterChunk != null ? parameterChunk.parameter.name : replacedParameter.getName();
final PsiType paramType =
parameterChunk != null ? parameterChunk.parameter.type : replacedParameter.getType();
if (getter == null) {
getter = GenerateMembersUtil.suggestGetterName(paramName, paramType, myProject);
paramsNeedingGetters.add(replacedParameter);
}
@NonNls String setter = parameterChunk != null ? parameterChunk.setter : null;
if (setter == null) {
setter = GenerateMembersUtil.suggestSetterName(paramName, paramType, myProject);
}
if (RefactoringUtil.isPlusPlusOrMinusMinus(paramUsage.getParent())) {
usages.add(
new ReplaceParameterIncrementDecrement(paramUsage, fixedParamName, setter, getter));
if (parameterChunk == null || parameterChunk.setter == null) {
paramsNeedingSetters.add(replacedParameter);
}
} else if (RefactoringUtil.isAssignmentLHS(paramUsage)) {
usages.add(
new ReplaceParameterAssignmentWithCall(paramUsage, fixedParamName, setter, getter));
if (parameterChunk == null || parameterChunk.setter == null) {
paramsNeedingSetters.add(replacedParameter);
}
} else {
usages.add(new ReplaceParameterReferenceWithCall(paramUsage, fixedParamName, getter));
}
}
}