| /* |
| * Copyright (C) 2019, 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 "aidl_language.h" |
| #include "aidl_typenames.h" |
| #include "logging.h" |
| |
| #include <stdlib.h> |
| #include <algorithm> |
| #include <iostream> |
| #include <memory> |
| |
| #include <android-base/parsedouble.h> |
| #include <android-base/parseint.h> |
| #include <android-base/strings.h> |
| |
| using android::base::ConsumeSuffix; |
| using android::base::Join; |
| using std::string; |
| using std::unique_ptr; |
| using std::vector; |
| |
| #define SHOULD_NOT_REACH() CHECK(false) << LOG(FATAL) << ": should not reach here: " |
| #define OPEQ(__y__) (string(op_) == string(__y__)) |
| #define COMPUTE_UNARY(__op__) \ |
| if (op == string(#__op__)) return __op__ val; |
| #define COMPUTE_BINARY(__op__) \ |
| if (op == string(#__op__)) return lval __op__ rval; |
| #define OP_IS_BIN_ARITHMETIC (OPEQ("+") || OPEQ("-") || OPEQ("*") || OPEQ("/") || OPEQ("%")) |
| #define OP_IS_BIN_BITFLIP (OPEQ("|") || OPEQ("^") || OPEQ("&")) |
| #define OP_IS_BIN_COMP \ |
| (OPEQ("<") || OPEQ(">") || OPEQ("<=") || OPEQ(">=") || OPEQ("==") || OPEQ("!=")) |
| #define OP_IS_BIN_SHIFT (OPEQ(">>") || OPEQ("<<")) |
| #define OP_IS_BIN_LOGICAL (OPEQ("||") || OPEQ("&&")) |
| |
| // NOLINT to suppress missing parentheses warnings about __def__. |
| #define SWITCH_KIND(__cond__, __action__, __def__) \ |
| switch (__cond__) { \ |
| case Type::BOOLEAN: \ |
| __action__(bool); \ |
| case Type::INT8: \ |
| __action__(int8_t); \ |
| case Type::INT32: \ |
| __action__(int32_t); \ |
| case Type::INT64: \ |
| __action__(int64_t); \ |
| default: \ |
| __def__; /* NOLINT */ \ |
| } |
| |
| template <class T> |
| T handleUnary(const string& op, T val) { |
| COMPUTE_UNARY(+) |
| COMPUTE_UNARY(-) |
| COMPUTE_UNARY(!) |
| COMPUTE_UNARY(~) |
| // Should not reach here. |
| SHOULD_NOT_REACH() << "Could not handleUnary for " << op << " " << val; |
| return static_cast<T>(0xdeadbeef); |
| } |
| |
| template <class T> |
| T handleBinaryCommon(T lval, const string& op, T rval) { |
| COMPUTE_BINARY(+) |
| COMPUTE_BINARY(-) |
| COMPUTE_BINARY(*) |
| COMPUTE_BINARY(/) |
| COMPUTE_BINARY(%) |
| COMPUTE_BINARY(|) |
| COMPUTE_BINARY(^) |
| COMPUTE_BINARY(&) |
| // comparison operators: return 0 or 1 by nature. |
| COMPUTE_BINARY(==) |
| COMPUTE_BINARY(!=) |
| COMPUTE_BINARY(<) |
| COMPUTE_BINARY(>) |
| COMPUTE_BINARY(<=) |
| COMPUTE_BINARY(>=) |
| // Should not reach here. |
| SHOULD_NOT_REACH() << "Could not handleBinaryCommon for " << lval << " " << op << " " << rval; |
| return static_cast<T>(0xdeadbeef); |
| } |
| |
| template <class T> |
| T handleShift(T lval, const string& op, int64_t rval) { |
| // just cast rval to int64_t and it should fit. |
| COMPUTE_BINARY(>>) |
| COMPUTE_BINARY(<<) |
| // Should not reach here. |
| SHOULD_NOT_REACH() << "Could not handleShift for " << lval << " " << op << " " << rval; |
| return static_cast<T>(0xdeadbeef); |
| } |
| |
| bool handleLogical(bool lval, const string& op, bool rval) { |
| COMPUTE_BINARY(||); |
| COMPUTE_BINARY(&&); |
| // Should not reach here. |
| SHOULD_NOT_REACH() << "Could not handleLogical for " << lval << " " << op << " " << rval; |
| return false; |
| } |
| |
| static bool isValidLiteralChar(char c) { |
| return !(c <= 0x1f || // control characters are < 0x20 |
| c >= 0x7f || // DEL is 0x7f |
| c == '\\'); // Disallow backslashes for future proofing. |
| } |
| |
| bool AidlUnaryConstExpression::IsCompatibleType(Type type, const string& op) { |
| // Verify the unary type here |
| switch (type) { |
| case Type::BOOLEAN: // fall-through |
| case Type::INT8: // fall-through |
| case Type::INT32: // fall-through |
| case Type::INT64: |
| return true; |
| case Type::FLOATING: |
| return (op == "+" || op == "-"); |
| default: |
| return false; |
| } |
| } |
| |
| bool AidlBinaryConstExpression::AreCompatibleTypes(Type t1, Type t2) { |
| switch (t1) { |
| case Type::STRING: |
| if (t2 == Type::STRING) { |
| return true; |
| } |
| break; |
| case Type::BOOLEAN: // fall-through |
| case Type::INT8: // fall-through |
| case Type::INT32: // fall-through |
| case Type::INT64: |
| switch (t2) { |
| case Type::BOOLEAN: // fall-through |
| case Type::INT8: // fall-through |
| case Type::INT32: // fall-through |
| case Type::INT64: |
| return true; |
| break; |
| default: |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| return false; |
| } |
| |
| // Returns the promoted kind for both operands |
| AidlConstantValue::Type AidlBinaryConstExpression::UsualArithmeticConversion(Type left, |
| Type right) { |
| // These are handled as special cases |
| CHECK(left != Type::STRING && right != Type::STRING); |
| CHECK(left != Type::FLOATING && right != Type::FLOATING); |
| |
| // Kinds in concern: bool, (u)int[8|32|64] |
| if (left == right) return left; // easy case |
| if (left == Type::BOOLEAN) return right; |
| if (right == Type::BOOLEAN) return left; |
| |
| return left < right ? right : left; |
| } |
| |
| // Returns the promoted integral type where INT32 is the smallest type |
| AidlConstantValue::Type AidlBinaryConstExpression::IntegralPromotion(Type in) { |
| return (Type::INT32 < in) ? in : Type::INT32; |
| } |
| |
| template <typename T> |
| T AidlConstantValue::cast() const { |
| CHECK(is_evaluated_ == true); |
| |
| #define CASE_CAST_T(__type__) return static_cast<T>(static_cast<__type__>(final_value_)); |
| |
| SWITCH_KIND(final_type_, CASE_CAST_T, SHOULD_NOT_REACH(); return 0;); |
| } |
| |
| AidlConstantValue* AidlConstantValue::Boolean(const AidlLocation& location, bool value) { |
| return new AidlConstantValue(location, Type::BOOLEAN, value ? "true" : "false"); |
| } |
| |
| AidlConstantValue* AidlConstantValue::Character(const AidlLocation& location, char value) { |
| const std::string explicit_value = string("'") + value + "'"; |
| if (!isValidLiteralChar(value)) { |
| AIDL_ERROR(location) << "Invalid character literal " << value; |
| return new AidlConstantValue(location, Type::ERROR, explicit_value); |
| } |
| return new AidlConstantValue(location, Type::CHARACTER, explicit_value); |
| } |
| |
| AidlConstantValue* AidlConstantValue::Floating(const AidlLocation& location, |
| const std::string& value) { |
| return new AidlConstantValue(location, Type::FLOATING, value); |
| } |
| |
| bool AidlConstantValue::IsHex(const string& value) { |
| if (value.length() > (sizeof("0x") - 1)) { |
| if (value[0] == '0' && (value[1] == 'x' || value[1] == 'X')) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool AidlConstantValue::ParseIntegral(const string& value, int64_t* parsed_value, |
| Type* parsed_type) { |
| bool isLong = false; |
| |
| if (parsed_value == nullptr || parsed_type == nullptr) { |
| return false; |
| } |
| |
| if (IsHex(value)) { |
| bool parseOK = false; |
| uint32_t rawValue32; |
| |
| // AIDL considers 'const int foo = 0xffffffff' as -1, but if we want to |
| // handle that when computing constant expressions, then we need to |
| // represent 0xffffffff as a uint32_t. However, AIDL only has signed types; |
| // so we parse as an unsigned int when possible and then cast to a signed |
| // int. One example of this is in ICameraService.aidl where a constant int |
| // is used for bit manipulations which ideally should be handled with an |
| // unsigned int. |
| parseOK = android::base::ParseUint<uint32_t>(value, &rawValue32); |
| if (parseOK) { |
| *parsed_value = static_cast<int32_t>(rawValue32); |
| *parsed_type = Type::INT32; |
| } else { |
| parseOK = android::base::ParseInt<int64_t>(value, parsed_value); |
| if (!parseOK) { |
| *parsed_type = Type::ERROR; |
| return false; |
| } |
| |
| *parsed_type = Type::INT64; |
| } |
| return true; |
| } |
| |
| if (value[value.size() - 1] == 'l' || value[value.size() - 1] == 'L') { |
| isLong = true; |
| *parsed_type = Type::INT64; |
| } |
| |
| string value_substr = value.substr(0, isLong ? value.size() - 1 : value.size()); |
| bool parseOK = android::base::ParseInt<int64_t>(value_substr, parsed_value); |
| if (!parseOK) { |
| *parsed_type = Type::ERROR; |
| return false; |
| } |
| |
| if (!isLong) { |
| // guess literal type. |
| if (*parsed_value <= INT8_MAX && *parsed_value >= INT8_MIN) { |
| *parsed_type = Type::INT8; |
| } else if (*parsed_value <= INT32_MAX && *parsed_value >= INT32_MIN) { |
| *parsed_type = Type::INT32; |
| } else { |
| *parsed_type = Type::INT64; |
| } |
| } |
| return true; |
| } |
| |
| AidlConstantValue* AidlConstantValue::Integral(const AidlLocation& location, const string& value) { |
| CHECK(!value.empty()); |
| |
| Type parsed_type; |
| int64_t parsed_value = 0; |
| bool success = ParseIntegral(value, &parsed_value, &parsed_type); |
| if (!success) { |
| return nullptr; |
| } |
| |
| return new AidlConstantValue(location, parsed_type, parsed_value, value); |
| } |
| |
| AidlConstantValue* AidlConstantValue::Array( |
| const AidlLocation& location, std::unique_ptr<vector<unique_ptr<AidlConstantValue>>> values) { |
| return new AidlConstantValue(location, Type::ARRAY, std::move(values)); |
| } |
| |
| AidlConstantValue* AidlConstantValue::String(const AidlLocation& location, const string& value) { |
| for (size_t i = 0; i < value.length(); ++i) { |
| if (!isValidLiteralChar(value[i])) { |
| AIDL_ERROR(location) << "Found invalid character at index " << i << " in string constant '" |
| << value << "'"; |
| return new AidlConstantValue(location, Type::ERROR, value); |
| } |
| } |
| |
| return new AidlConstantValue(location, Type::STRING, value); |
| } |
| |
| AidlConstantValue* AidlConstantValue::ShallowIntegralCopy(const AidlConstantValue& other) { |
| // TODO(b/141313220) Perform a full copy instead of parsing+unparsing |
| AidlTypeSpecifier type = AidlTypeSpecifier(AIDL_LOCATION_HERE, "long", false, nullptr, ""); |
| // TODO(b/142722772) CheckValid() should be called before ValueString() |
| if (!other.CheckValid() || !other.evaluate(type)) { |
| AIDL_ERROR(other) << "Failed to parse expression as integer: " << other.value_; |
| return nullptr; |
| } |
| const std::string& value = other.ValueString(type, AidlConstantValueDecorator); |
| if (value.empty()) { |
| return nullptr; // error already logged |
| } |
| |
| AidlConstantValue* result = Integral(AIDL_LOCATION_HERE, value); |
| if (result == nullptr) { |
| AIDL_FATAL(other) << "Unable to perform ShallowIntegralCopy."; |
| } |
| return result; |
| } |
| |
| string AidlConstantValue::ValueString(const AidlTypeSpecifier& type, |
| const ConstantValueDecorator& decorator) const { |
| if (type.IsGeneric()) { |
| AIDL_ERROR(type) << "Generic type cannot be specified with a constant literal."; |
| return ""; |
| } |
| if (!is_evaluated_) { |
| // TODO(b/142722772) CheckValid() should be called before ValueString() |
| bool success = CheckValid(); |
| success &= evaluate(type); |
| if (!success) { |
| // the detailed error message shall be printed in evaluate |
| return ""; |
| } |
| } |
| if (!is_valid_) { |
| AIDL_ERROR(this) << "Invalid constant value: " + value_; |
| return ""; |
| } |
| const string& type_string = type.GetName(); |
| int err = 0; |
| |
| switch (final_type_) { |
| case Type::CHARACTER: |
| if (type_string == "char") { |
| return decorator(type, final_string_value_); |
| } |
| err = -1; |
| break; |
| case Type::STRING: |
| if (type_string == "String") { |
| return decorator(type, final_string_value_); |
| } |
| err = -1; |
| break; |
| case Type::BOOLEAN: // fall-through |
| case Type::INT8: // fall-through |
| case Type::INT32: // fall-through |
| case Type::INT64: |
| if (type_string == "byte") { |
| if (final_value_ > INT8_MAX || final_value_ < INT8_MIN) { |
| err = -1; |
| break; |
| } |
| return decorator(type, std::to_string(static_cast<int8_t>(final_value_))); |
| } else if (type_string == "int") { |
| if (final_value_ > INT32_MAX || final_value_ < INT32_MIN) { |
| err = -1; |
| break; |
| } |
| return decorator(type, std::to_string(static_cast<int32_t>(final_value_))); |
| } else if (type_string == "long") { |
| return decorator(type, std::to_string(final_value_)); |
| } else if (type_string == "boolean") { |
| return decorator(type, final_value_ ? "true" : "false"); |
| } |
| err = -1; |
| break; |
| case Type::ARRAY: { |
| if (!type.IsArray()) { |
| err = -1; |
| break; |
| } |
| vector<string> value_strings; |
| value_strings.reserve(values_.size()); |
| bool success = true; |
| |
| for (const auto& value : values_) { |
| const AidlTypeSpecifier& array_base = type.ArrayBase(); |
| const string value_string = value->ValueString(array_base, decorator); |
| if (value_string.empty()) { |
| success = false; |
| break; |
| } |
| value_strings.push_back(value_string); |
| } |
| if (!success) { |
| err = -1; |
| break; |
| } |
| |
| return decorator(type, "{" + Join(value_strings, ", ") + "}"); |
| } |
| case Type::FLOATING: { |
| std::string_view raw_view(value_.c_str()); |
| bool is_float_literal = ConsumeSuffix(&raw_view, "f"); |
| std::string stripped_value = std::string(raw_view); |
| |
| if (type_string == "double") { |
| double parsed_value; |
| if (!android::base::ParseDouble(stripped_value, &parsed_value)) { |
| AIDL_ERROR(this) << "Could not parse " << value_; |
| err = -1; |
| break; |
| } |
| return decorator(type, std::to_string(parsed_value)); |
| } |
| if (is_float_literal && type_string == "float") { |
| float parsed_value; |
| if (!android::base::ParseFloat(stripped_value, &parsed_value)) { |
| AIDL_ERROR(this) << "Could not parse " << value_; |
| err = -1; |
| break; |
| } |
| return decorator(type, std::to_string(parsed_value) + "f"); |
| } |
| err = -1; |
| break; |
| } |
| default: |
| err = -1; |
| break; |
| } |
| |
| CHECK(err != 0); |
| AIDL_ERROR(this) << "Invalid type specifier for " << ToString(final_type_) << ": " << type_string; |
| return ""; |
| } |
| |
| bool AidlConstantValue::CheckValid() const { |
| // Nothing needs to be checked here. The constant value will be validated in |
| // the constructor or in the evaluate() function. |
| if (is_evaluated_) return is_valid_; |
| |
| switch (type_) { |
| case Type::BOOLEAN: // fall-through |
| case Type::INT8: // fall-through |
| case Type::INT32: // fall-through |
| case Type::INT64: // fall-through |
| case Type::ARRAY: // fall-through |
| case Type::CHARACTER: // fall-through |
| case Type::STRING: // fall-through |
| case Type::FLOATING: // fall-through |
| case Type::UNARY: // fall-through |
| case Type::BINARY: |
| is_valid_ = true; |
| break; |
| case Type::ERROR: |
| return false; |
| default: |
| AIDL_FATAL(this) << "Unrecognized constant value type: " << ToString(type_); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool AidlConstantValue::evaluate(const AidlTypeSpecifier& type) const { |
| if (is_evaluated_) { |
| return is_valid_; |
| } |
| int err = 0; |
| is_evaluated_ = true; |
| |
| switch (type_) { |
| case Type::ARRAY: { |
| if (!type.IsArray()) { |
| AIDL_ERROR(this) << "Invalid constant array type: " << type.GetName(); |
| err = -1; |
| break; |
| } |
| Type array_type = Type::ERROR; |
| bool success = true; |
| for (const auto& value : values_) { |
| success = value->CheckValid(); |
| if (success) { |
| success = value->evaluate(type.ArrayBase()); |
| if (!success) { |
| AIDL_ERROR(this) << "Invalid array element: " << value->value_; |
| break; |
| } |
| if (array_type == Type::ERROR) { |
| array_type = value->final_type_; |
| } else if (!AidlBinaryConstExpression::AreCompatibleTypes(array_type, |
| value->final_type_)) { |
| AIDL_ERROR(this) << "Incompatible array element type: " << ToString(value->final_type_) |
| << ". Expecting type compatible with " << ToString(array_type); |
| success = false; |
| break; |
| } |
| } else { |
| break; |
| } |
| } |
| if (!success) { |
| err = -1; |
| break; |
| } |
| final_type_ = type_; |
| break; |
| } |
| case Type::BOOLEAN: |
| if ((value_ != "true") && (value_ != "false")) { |
| AIDL_ERROR(this) << "Invalid constant boolean value: " << value_; |
| err = -1; |
| break; |
| } |
| final_value_ = (value_ == "true") ? 1 : 0; |
| final_type_ = type_; |
| break; |
| case Type::INT8: // fall-through |
| case Type::INT32: // fall-through |
| case Type::INT64: |
| // Parsing happens in the constructor |
| final_type_ = type_; |
| break; |
| case Type::CHARACTER: // fall-through |
| case Type::STRING: |
| final_string_value_ = value_; |
| final_type_ = type_; |
| break; |
| case Type::FLOATING: |
| // Just parse on the fly in ValueString |
| final_type_ = type_; |
| break; |
| default: |
| AIDL_FATAL(this) << "Unrecognized constant value type: " << ToString(type_); |
| err = -1; |
| } |
| |
| return (err == 0) ? true : false; |
| } |
| |
| string AidlConstantValue::ToString(Type type) { |
| switch (type) { |
| case Type::BOOLEAN: |
| return "a literal boolean"; |
| case Type::INT8: |
| return "an int8 literal"; |
| case Type::INT32: |
| return "an int32 literal"; |
| case Type::INT64: |
| return "an int64 literal"; |
| case Type::ARRAY: |
| return "a literal array"; |
| case Type::CHARACTER: |
| return "a literal char"; |
| case Type::STRING: |
| return "a literal string"; |
| case Type::FLOATING: |
| return "a literal float"; |
| case Type::UNARY: |
| return "a unary expression"; |
| case Type::BINARY: |
| return "a binary expression"; |
| case Type::ERROR: |
| LOG(FATAL) << "aidl internal error: error type failed to halt program"; |
| return ""; |
| default: |
| LOG(FATAL) << "aidl internal error: unknown constant type: " << static_cast<int>(type); |
| return ""; // not reached |
| } |
| } |
| |
| bool AidlUnaryConstExpression::CheckValid() const { |
| if (is_evaluated_) return is_valid_; |
| CHECK(unary_ != nullptr); |
| |
| is_valid_ = unary_->CheckValid(); |
| if (!is_valid_) { |
| final_type_ = Type::ERROR; |
| return false; |
| } |
| |
| return AidlConstantValue::CheckValid(); |
| } |
| |
| bool AidlUnaryConstExpression::evaluate(const AidlTypeSpecifier& type) const { |
| if (is_evaluated_) { |
| return is_valid_; |
| } |
| is_evaluated_ = true; |
| |
| // Recursively evaluate the expression tree |
| if (!unary_->is_evaluated_) { |
| // TODO(b/142722772) CheckValid() should be called before ValueString() |
| bool success = CheckValid(); |
| success &= unary_->evaluate(type); |
| if (!success) { |
| is_valid_ = false; |
| return false; |
| } |
| } |
| if (!unary_->is_valid_ || !IsCompatibleType(unary_->final_type_, op_)) { |
| AIDL_ERROR(type) << "Invalid constant unary expression: " + value_; |
| is_valid_ = false; |
| return false; |
| } |
| final_type_ = unary_->final_type_; |
| |
| if (final_type_ == Type::FLOATING) { |
| // don't do anything here. ValueString() will handle everything. |
| is_valid_ = true; |
| return true; |
| } |
| |
| #define CASE_UNARY(__type__) \ |
| final_value_ = handleUnary(op_, static_cast<__type__>(unary_->final_value_)); \ |
| return true; |
| |
| SWITCH_KIND(final_type_, CASE_UNARY, SHOULD_NOT_REACH(); final_type_ = Type::ERROR; |
| is_valid_ = false; return false;) |
| } |
| |
| bool AidlBinaryConstExpression::CheckValid() const { |
| bool success = false; |
| if (is_evaluated_) return is_valid_; |
| CHECK(left_val_ != nullptr); |
| CHECK(right_val_ != nullptr); |
| |
| success = left_val_->CheckValid(); |
| if (!success) { |
| final_type_ = Type::ERROR; |
| AIDL_ERROR(this) << "Invalid left operand in binary expression: " + value_; |
| } |
| |
| success = right_val_->CheckValid(); |
| if (!success) { |
| AIDL_ERROR(this) << "Invalid right operand in binary expression: " + value_; |
| final_type_ = Type::ERROR; |
| } |
| |
| if (final_type_ == Type::ERROR) { |
| is_valid_ = false; |
| return false; |
| } |
| |
| is_valid_ = true; |
| return AidlConstantValue::CheckValid(); |
| } |
| |
| bool AidlBinaryConstExpression::evaluate(const AidlTypeSpecifier& type) const { |
| if (is_evaluated_) { |
| return is_valid_; |
| } |
| is_evaluated_ = true; |
| CHECK(left_val_ != nullptr); |
| CHECK(right_val_ != nullptr); |
| |
| // Recursively evaluate the binary expression tree |
| if (!left_val_->is_evaluated_ || !right_val_->is_evaluated_) { |
| // TODO(b/142722772) CheckValid() should be called before ValueString() |
| bool success = CheckValid(); |
| success &= left_val_->evaluate(type); |
| success &= right_val_->evaluate(type); |
| if (!success) { |
| is_valid_ = false; |
| return false; |
| } |
| } |
| if (!left_val_->is_valid_ || !right_val_->is_valid_) { |
| is_valid_ = false; |
| return false; |
| } |
| is_valid_ = AreCompatibleTypes(left_val_->final_type_, right_val_->final_type_); |
| if (!is_valid_) { |
| return false; |
| } |
| |
| bool isArithmeticOrBitflip = OP_IS_BIN_ARITHMETIC || OP_IS_BIN_BITFLIP; |
| |
| // Handle String case first |
| if (left_val_->final_type_ == Type::STRING) { |
| if (!OPEQ("+")) { |
| // invalid operation on strings |
| final_type_ = Type::ERROR; |
| is_valid_ = false; |
| return false; |
| } |
| |
| // Remove trailing " from lhs |
| const string& lhs = left_val_->final_string_value_; |
| if (lhs.back() != '"') { |
| AIDL_ERROR(this) << "'" << lhs << "' is missing a trailing quote."; |
| final_type_ = Type::ERROR; |
| is_valid_ = false; |
| return false; |
| } |
| const string& rhs = right_val_->final_string_value_; |
| // Remove starting " from rhs |
| if (rhs.front() != '"') { |
| AIDL_ERROR(this) << "'" << rhs << "' is missing a leading quote."; |
| final_type_ = Type::ERROR; |
| is_valid_ = false; |
| return false; |
| } |
| |
| final_string_value_ = string(lhs.begin(), lhs.end() - 1).append(rhs.begin() + 1, rhs.end()); |
| final_type_ = Type::STRING; |
| return true; |
| } |
| |
| // TODO(b/139877950) Add support for handling overflows |
| |
| // CASE: + - * / % | ^ & < > <= >= == != |
| if (isArithmeticOrBitflip || OP_IS_BIN_COMP) { |
| if ((op_ == "/" || op_ == "%") && right_val_->final_value_ == 0) { |
| final_type_ = Type::ERROR; |
| is_valid_ = false; |
| AIDL_ERROR(this) << "Cannot do division operation with zero for expression: " + value_; |
| return false; |
| } |
| |
| // promoted kind for both operands. |
| Type promoted = UsualArithmeticConversion(IntegralPromotion(left_val_->final_type_), |
| IntegralPromotion(right_val_->final_type_)); |
| // result kind. |
| final_type_ = isArithmeticOrBitflip |
| ? promoted // arithmetic or bitflip operators generates promoted type |
| : Type::BOOLEAN; // comparison operators generates bool |
| |
| #define CASE_BINARY_COMMON(__type__) \ |
| final_value_ = handleBinaryCommon(static_cast<__type__>(left_val_->final_value_), op_, \ |
| static_cast<__type__>(right_val_->final_value_)); \ |
| return true; |
| |
| SWITCH_KIND(promoted, CASE_BINARY_COMMON, SHOULD_NOT_REACH(); final_type_ = Type::ERROR; |
| is_valid_ = false; return false;) |
| } |
| |
| // CASE: << >> |
| string newOp = op_; |
| if (OP_IS_BIN_SHIFT) { |
| final_type_ = IntegralPromotion(left_val_->final_type_); |
| // instead of promoting rval, simply casting it to int64 should also be good. |
| int64_t numBits = right_val_->cast<int64_t>(); |
| if (numBits < 0) { |
| // shifting with negative number of bits is undefined in C. In AIDL it |
| // is defined as shifting into the other direction. |
| newOp = OPEQ("<<") ? ">>" : "<<"; |
| numBits = -numBits; |
| } |
| |
| #define CASE_SHIFT(__type__) \ |
| final_value_ = handleShift(static_cast<__type__>(left_val_->final_value_), newOp, numBits); \ |
| return true; |
| |
| SWITCH_KIND(final_type_, CASE_SHIFT, SHOULD_NOT_REACH(); final_type_ = Type::ERROR; |
| is_valid_ = false; return false;) |
| } |
| |
| // CASE: && || |
| if (OP_IS_BIN_LOGICAL) { |
| final_type_ = Type::BOOLEAN; |
| // easy; everything is bool. |
| final_value_ = handleLogical(left_val_->final_value_, op_, right_val_->final_value_); |
| return true; |
| } |
| |
| SHOULD_NOT_REACH(); |
| is_valid_ = false; |
| return false; |
| } |
| |
| AidlConstantValue::AidlConstantValue(const AidlLocation& location, Type parsed_type, |
| int64_t parsed_value, const string& checked_value) |
| : AidlNode(location), |
| type_(parsed_type), |
| value_(checked_value), |
| final_type_(parsed_type), |
| final_value_(parsed_value) { |
| CHECK(!value_.empty() || type_ == Type::ERROR); |
| CHECK(type_ == Type::INT8 || type_ == Type::INT32 || type_ == Type::INT64); |
| } |
| |
| AidlConstantValue::AidlConstantValue(const AidlLocation& location, Type type, |
| const string& checked_value) |
| : AidlNode(location), |
| type_(type), |
| value_(checked_value), |
| final_type_(type) { |
| CHECK(!value_.empty() || type_ == Type::ERROR); |
| switch (type_) { |
| case Type::INT8: |
| case Type::INT32: |
| case Type::INT64: |
| case Type::ARRAY: |
| AIDL_FATAL(this) << "Invalid type: " << ToString(type_); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| AidlConstantValue::AidlConstantValue(const AidlLocation& location, Type type, |
| std::unique_ptr<vector<unique_ptr<AidlConstantValue>>> values) |
| : AidlNode(location), |
| type_(type), |
| values_(std::move(*values)), |
| is_valid_(false), |
| is_evaluated_(false), |
| final_type_(type) { |
| CHECK(type_ == Type::ARRAY); |
| } |
| |
| AidlUnaryConstExpression::AidlUnaryConstExpression(const AidlLocation& location, const string& op, |
| std::unique_ptr<AidlConstantValue> rval) |
| : AidlConstantValue(location, Type::UNARY, op + rval->value_), |
| unary_(std::move(rval)), |
| op_(op) { |
| final_type_ = Type::UNARY; |
| } |
| |
| AidlBinaryConstExpression::AidlBinaryConstExpression(const AidlLocation& location, |
| std::unique_ptr<AidlConstantValue> lval, |
| const string& op, |
| std::unique_ptr<AidlConstantValue> rval) |
| : AidlConstantValue(location, Type::BINARY, lval->value_ + op + rval->value_), |
| left_val_(std::move(lval)), |
| right_val_(std::move(rval)), |
| op_(op) { |
| final_type_ = Type::BINARY; |
| } |
