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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 <algorithm>
#include <string>
#include <vector>
#include "aidl_language.h"
#include "logging.h"
using android::base::StringPrintf;
using std::string;
using std::vector;
namespace android {
namespace aidl {
// Since packages cannot contain '-' normally, we cannot be asked
// to create a type that conflicts with these strings.
const char kAidlReservedTypePackage[] = "aidl-internal";
const char kUtf8InCppStringClass[] = "Utf8InCppString";
// These *must* match the package and class names above.
const char kUtf8InCppStringCanonicalName[] = "aidl-internal.Utf8InCppString";
const char kStringCanonicalName[] = "java.lang.String";
const char kUtf8InCppAnnotation[] = "@utfInCpp";
namespace {
bool is_java_keyword(const char* str) {
static const std::vector<std::string> kJavaKeywords{
"abstract", "assert", "boolean", "break", "byte",
"case", "catch", "char", "class", "const",
"continue", "default", "do", "double", "else",
"enum", "extends", "final", "finally", "float",
"for", "goto", "if", "implements", "import",
"instanceof", "int", "interface", "long", "native",
"new", "package", "private", "protected", "public",
"return", "short", "static", "strictfp", "super",
"switch", "synchronized", "this", "throw", "throws",
"transient", "try", "void", "volatile", "while",
"true", "false", "null",
};
return std::find(kJavaKeywords.begin(), kJavaKeywords.end(), str) !=
kJavaKeywords.end();
}
} // namespace
ValidatableType::ValidatableType(
int kind, const string& package, const string& type_name,
const string& decl_file, int decl_line)
: kind_(kind),
type_name_(type_name),
canonical_name_((package.empty()) ? type_name
: package + "." + type_name),
origin_file_(decl_file),
origin_line_(decl_line) {}
string ValidatableType::HumanReadableKind() const {
switch (Kind()) {
case ValidatableType::KIND_BUILT_IN:
return "a built in";
case ValidatableType::KIND_PARCELABLE:
return "a parcelable";
case ValidatableType::KIND_INTERFACE:
return "an interface";
case ValidatableType::KIND_GENERATED:
return "a generated";
}
return "unknown";
}
const ValidatableType* TypeNamespace::GetReturnType(const AidlTypeSpecifier& raw_type,
const AidlDefinedType& context) const {
string error_msg;
const ValidatableType* return_type = GetValidatableType(raw_type, &error_msg, context);
if (return_type == nullptr) {
AIDL_ERROR(raw_type) << "Return type " << raw_type.ToString() << ": " << error_msg;
return nullptr;
}
return return_type;
}
bool TypeNamespace::AddDefinedTypes(vector<AidlDefinedType*>& types, const string& filename) {
bool success = true;
for (const auto type : types) {
const AidlInterface* interface = type->AsInterface();
if (interface != nullptr) {
success &= AddBinderType(*interface, filename);
continue;
}
const AidlParcelable* parcelable = type->AsParcelable();
if (parcelable != nullptr) {
success &= AddParcelableType(*parcelable, filename);
continue;
}
CHECK(false) << "aidl internal error: unrecognized type";
}
return success;
}
const ValidatableType* TypeNamespace::GetArgType(const AidlArgument& a, int arg_index,
const AidlDefinedType& context) const {
string error_prefix =
StringPrintf("parameter %s (argument %d): ", a.GetName().c_str(), arg_index);
// check the arg type
string error_msg;
const ValidatableType* t = GetValidatableType(a.GetType(), &error_msg, context);
if (t == nullptr) {
AIDL_ERROR(a) << error_prefix << error_msg;
return nullptr;
}
const bool can_be_out = typenames_.CanBeOutParameter(a.GetType());
if (!a.DirectionWasSpecified() && can_be_out) {
AIDL_ERROR(a) << error_prefix << "'" << a.GetType().ToString()
<< "' can be an out type, so you must declare it as in, out, or inout.";
return nullptr;
}
if (a.GetDirection() != AidlArgument::IN_DIR && !can_be_out) {
AIDL_ERROR(a) << error_prefix << "'" << a.ToString() << "' can only be an in parameter.";
return nullptr;
}
// check that the name doesn't match a keyword
if (is_java_keyword(a.GetName().c_str())) {
AIDL_ERROR(a) << error_prefix << "Argument name is a Java or aidl keyword";
return nullptr;
}
// Reserve a namespace for internal use
if (a.GetName().substr(0, 5) == "_aidl") {
AIDL_ERROR(a) << error_prefix << "Argument name cannot begin with '_aidl'";
return nullptr;
}
return t;
}
} // namespace aidl
} // namespace android
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