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/*
* Copyright (C) 2015, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "type_namespace.h"
#include <iostream>
#include <string>
#include <base/stringprintf.h>
#include "aidl_language.h"
#include "parse_helpers.h"
using android::base::StringPrintf;
using std::cerr;
using std::endl;
using std::string;
namespace android {
namespace aidl {
bool TypeNamespace::HasType(const string& type_name) const {
return GetValidatableType(type_name) != nullptr;
}
bool TypeNamespace::IsValidReturnType(const AidlType& raw_type,
const string& filename) const {
const string error_prefix = StringPrintf(
"In file %s line %d return type %s:\n ",
filename.c_str(), raw_type.GetLine(), raw_type.ToString().c_str());
const ValidatableType* return_type = GetValidatableType(raw_type.GetName());
if (return_type == nullptr) {
cerr << error_prefix << "unknown return type" << endl;
return false;
}
if (!return_type->CanWriteToParcel()) {
cerr << error_prefix << "return type cannot be marshalled" << endl;
return false;
}
if (raw_type.IsArray() && !return_type->CanBeArray()) {
cerr << error_prefix << "return type cannot be an array" << endl;
return false;
}
return true;
}
bool TypeNamespace::IsValidArg(const AidlArgument& a,
int arg_index,
const string& filename) const {
string error_prefix = StringPrintf(
"In file %s line %d parameter %s (%d):\n ",
filename.c_str(), a.GetLine(), a.GetName().c_str(), arg_index);
// check the arg type
const ValidatableType* t = GetValidatableType(a.GetType().GetName());
if (t == nullptr) {
cerr << error_prefix << "unknown type " << a.GetType().GetName().c_str() << endl;
return false;
}
if (!t->CanWriteToParcel()) {
cerr << error_prefix
<< StringPrintf("'%s %s' can't be marshalled.",
a.GetType().GetName().c_str(), a.GetName().c_str()) << endl;
return false;
}
if (!a.DirectionWasSpecified() &&
(a.GetType().IsArray() || t->CanBeOutParameter())) {
cerr << error_prefix << StringPrintf(
"'%s %s' can be an out parameter, so you must declare it as in,"
" out or inout.", a.GetType().GetName().c_str(), a.GetName().c_str()) << endl;
return false;
}
if (a.GetDirection() != AidlArgument::IN_DIR &&
!t->CanBeOutParameter() &&
!a.GetType().IsArray()) {
cerr << error_prefix << StringPrintf(
"'%s' can only be an in parameter.",
a.ToString().c_str()) << endl;
return false;
}
if (a.GetType().IsArray() && !t->CanBeArray()) {
cerr << error_prefix << StringPrintf(
"'%s' cannot be an array.",
a.ToString().c_str()) << endl;
return false;
}
// check that the name doesn't match a keyword
if (is_java_keyword(a.GetName().c_str())) {
cerr << error_prefix << "Argument name is a C++, Java, or aidl keyword"
<< endl;
return false;
}
// Reserve a namespace for internal use
if (a.GetName().substr(0, 5) == "_aidl") {
cerr << error_prefix << "Argument name cannot begin with '_aidl'"
<< endl;
return false;
}
return true;
}
} // namespace aidl
} // namespace android
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