| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 "types/DoubleType.hpp" |
| |
| #include <cstddef> |
| #include <cstdint> |
| #include <cstdio> |
| #include <limits> |
| #include <string> |
| |
| #include "types/NullCoercibilityCheckMacro.hpp" |
| #include "types/Type.hpp" |
| #include "types/TypeID.hpp" |
| #include "types/TypedValue.hpp" |
| #include "utility/EqualsAnyConstant.hpp" |
| |
| #include "glog/logging.h" |
| |
| // NetBSD's libc has snprintf, but it doesn't show up in the std namespace for |
| // C++. |
| #ifndef __NetBSD__ |
| using std::snprintf; |
| #endif |
| |
| namespace quickstep { |
| |
| const TypeID DoubleType::kStaticTypeID = kDouble; |
| |
| bool DoubleType::isSafelyCoercibleFrom(const Type &original_type) const { |
| QUICKSTEP_NULL_COERCIBILITY_CHECK(); |
| return QUICKSTEP_EQUALS_ANY_CONSTANT(original_type.getTypeID(), |
| kInt, kLong, kFloat, kDouble); |
| } |
| |
| TypedValue DoubleType::coerceValue(const TypedValue &original_value, |
| const Type &original_type) const { |
| DCHECK(isCoercibleFrom(original_type)) |
| << "Can't coerce value of Type " << original_type.getName() |
| << " to Type " << getName(); |
| |
| if (original_value.isNull()) { |
| return makeNullValue(); |
| } |
| |
| switch (original_type.getTypeID()) { |
| case kInt: |
| return TypedValue(static_cast<double>(original_value.getLiteral<int>())); |
| case kLong: |
| return TypedValue(static_cast<double>(original_value.getLiteral<std::int64_t>())); |
| case kFloat: |
| return TypedValue(static_cast<double>(original_value.getLiteral<float>())); |
| case kDouble: |
| return original_value; |
| default: |
| LOG(FATAL) << "Attempted to coerce Type " << original_type.getName() |
| << " (not recognized as a numeric Type) to " << getName(); |
| } |
| } |
| |
| std::string DoubleType::printValueToString(const TypedValue &value) const { |
| DCHECK(!value.isNull()); |
| |
| char printbuffer[kPrintWidth + 1]; |
| int written = snprintf(printbuffer, |
| sizeof(printbuffer), |
| "%.*g", |
| std::numeric_limits<double>::max_digits10, |
| value.getLiteral<double>()); |
| DCHECK_GE(written, 0) << "snprintf() encountered an encoding error"; |
| DCHECK_LT(static_cast<std::size_t>(written), sizeof(printbuffer)) |
| << "snprintf() would have written a string of length " << written |
| << " (plus null-terminator), but buffer size is only " << sizeof(printbuffer); |
| return std::string(printbuffer); |
| } |
| |
| void DoubleType::printValueToFile(const TypedValue &value, |
| FILE *file, |
| const int padding) const { |
| DCHECK(!value.isNull()); |
| |
| std::fprintf(file, |
| "%*.*g", |
| padding, |
| std::numeric_limits<double>::max_digits10, |
| value.getLiteral<double>()); |
| } |
| |
| bool DoubleType::parseValueFromString(const std::string &value_string, |
| TypedValue *value) const { |
| double parsed_double; |
| int read_chars; |
| int matched = std::sscanf(value_string.c_str(), |
| "%lf%n", |
| &parsed_double, |
| &read_chars); |
| if ((matched != 1) |
| || (static_cast<std::string::size_type>(read_chars) != value_string.length())) { |
| return false; |
| } |
| |
| *value = TypedValue(parsed_double); |
| return true; |
| } |
| |
| } // namespace quickstep |