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686 lines
32 KiB
686 lines
32 KiB
// |
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// Copyright 2017 The Abseil Authors. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// https://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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// ----------------------------------------------------------------------------- |
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// File: substitute.h |
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// ----------------------------------------------------------------------------- |
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// |
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// This package contains functions for efficiently performing string |
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// substitutions using a format string with positional notation: |
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// `Substitute()` and `SubstituteAndAppend()`. |
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// |
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// Unlike printf-style format specifiers, `Substitute()` functions do not need |
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// to specify the type of the substitution arguments. Supported arguments |
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// following the format string, such as strings, string_views, ints, |
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// floats, and bools, are automatically converted to strings during the |
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// substitution process. (See below for a full list of supported types.) |
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// |
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// `Substitute()` does not allow you to specify *how* to format a value, beyond |
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// the default conversion to string. For example, you cannot format an integer |
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// in hex. |
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// |
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// The format string uses positional identifiers indicated by a dollar sign ($) |
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// and single digit positional ids to indicate which substitution arguments to |
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// use at that location within the format string. |
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// |
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// A '$$' sequence in the format string causes a literal '$' character to be |
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// output. |
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// |
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// Example 1: |
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// std::string s = Substitute("$1 purchased $0 $2 for $$10. Thanks $1!", |
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// 5, "Bob", "Apples"); |
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// EXPECT_EQ("Bob purchased 5 Apples for $10. Thanks Bob!", s); |
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// |
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// Example 2: |
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// std::string s = "Hi. "; |
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// SubstituteAndAppend(&s, "My name is $0 and I am $1 years old.", "Bob", 5); |
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// EXPECT_EQ("Hi. My name is Bob and I am 5 years old.", s); |
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// |
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// Supported types: |
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// * absl::string_view, std::string, const char* (null is equivalent to "") |
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// * int32_t, int64_t, uint32_t, uint64 |
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// * float, double |
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// * bool (Printed as "true" or "false") |
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// * pointer types other than char* (Printed as "0x<lower case hex string>", |
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// except that null is printed as "NULL") |
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// |
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// If an invalid format string is provided, Substitute returns an empty string |
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// and SubstituteAndAppend does not change the provided output string. |
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// A format string is invalid if it: |
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// * ends in an unescaped $ character, |
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// e.g. "Hello $", or |
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// * calls for a position argument which is not provided, |
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// e.g. Substitute("Hello $2", "world"), or |
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// * specifies a non-digit, non-$ character after an unescaped $ character, |
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// e.g. "Hello $f". |
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// In debug mode, i.e. #ifndef NDEBUG, such errors terminate the program. |
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#ifndef ABSL_STRINGS_SUBSTITUTE_H_ |
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#define ABSL_STRINGS_SUBSTITUTE_H_ |
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#include <cstring> |
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#include <string> |
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#include <type_traits> |
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#include <vector> |
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#include "absl/base/macros.h" |
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#include "absl/base/port.h" |
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#include "absl/strings/ascii.h" |
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#include "absl/strings/escaping.h" |
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#include "absl/strings/numbers.h" |
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#include "absl/strings/str_cat.h" |
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#include "absl/strings/str_split.h" |
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#include "absl/strings/string_view.h" |
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#include "absl/strings/strip.h" |
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namespace absl { |
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namespace substitute_internal { |
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// Arg |
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// |
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// This class provides an argument type for `absl::Substitute()` and |
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// `absl::SubstituteAndAppend()`. `Arg` handles implicit conversion of various |
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// types to a string. (`Arg` is very similar to the `AlphaNum` class in |
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// `StrCat()`.) |
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// |
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// This class has implicit constructors. |
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class Arg { |
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public: |
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// Overloads for std::string-y things |
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// |
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// Explicitly overload `const char*` so the compiler doesn't cast to `bool`. |
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Arg(const char* value) // NOLINT(runtime/explicit) |
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: piece_(absl::NullSafeStringView(value)) {} |
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template <typename Allocator> |
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Arg( // NOLINT |
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const std::basic_string<char, std::char_traits<char>, Allocator>& |
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value) noexcept |
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: piece_(value) {} |
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Arg(absl::string_view value) // NOLINT(runtime/explicit) |
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: piece_(value) {} |
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// Overloads for primitives |
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// |
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// No overloads are available for signed and unsigned char because if people |
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// are explicitly declaring their chars as signed or unsigned then they are |
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// probably using them as 8-bit integers and would probably prefer an integer |
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// representation. However, we can't really know, so we make the caller decide |
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// what to do. |
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Arg(char value) // NOLINT(runtime/explicit) |
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: piece_(scratch_, 1) { scratch_[0] = value; } |
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Arg(short value) // NOLINT(*) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(unsigned short value) // NOLINT(*) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(int value) // NOLINT(runtime/explicit) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(unsigned int value) // NOLINT(runtime/explicit) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(long value) // NOLINT(*) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(unsigned long value) // NOLINT(*) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(long long value) // NOLINT(*) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(unsigned long long value) // NOLINT(*) |
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: piece_(scratch_, |
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numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} |
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Arg(float value) // NOLINT(runtime/explicit) |
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: piece_(scratch_, numbers_internal::SixDigitsToBuffer(value, scratch_)) { |
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} |
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Arg(double value) // NOLINT(runtime/explicit) |
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: piece_(scratch_, numbers_internal::SixDigitsToBuffer(value, scratch_)) { |
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} |
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Arg(bool value) // NOLINT(runtime/explicit) |
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: piece_(value ? "true" : "false") {} |
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Arg(Hex hex); // NOLINT(runtime/explicit) |
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Arg(Dec dec); // NOLINT(runtime/explicit) |
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// vector<bool>::reference and const_reference require special help to |
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// convert to `AlphaNum` because it requires two user defined conversions. |
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template <typename T, |
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absl::enable_if_t< |
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std::is_class<T>::value && |
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(std::is_same<T, std::vector<bool>::reference>::value || |
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std::is_same<T, std::vector<bool>::const_reference>::value)>* = |
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nullptr> |
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Arg(T value) // NOLINT(google-explicit-constructor) |
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: Arg(static_cast<bool>(value)) {} |
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// `void*` values, with the exception of `char*`, are printed as |
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// "0x<hex value>". However, in the case of `nullptr`, "NULL" is printed. |
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Arg(const void* value); // NOLINT(runtime/explicit) |
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Arg(const Arg&) = delete; |
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Arg& operator=(const Arg&) = delete; |
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absl::string_view piece() const { return piece_; } |
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private: |
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absl::string_view piece_; |
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char scratch_[numbers_internal::kFastToBufferSize]; |
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}; |
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// Internal helper function. Don't call this from outside this implementation. |
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// This interface may change without notice. |
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void SubstituteAndAppendArray(std::string* output, absl::string_view format, |
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const absl::string_view* args_array, |
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size_t num_args); |
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#if defined(ABSL_BAD_CALL_IF) |
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constexpr int CalculateOneBit(const char* format) { |
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return (*format < '0' || *format > '9') ? 0 : (1 << (*format - '0')); |
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} |
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constexpr const char* SkipNumber(const char* format) { |
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return !*format ? format : (format + 1); |
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} |
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constexpr int PlaceholderBitmask(const char* format) { |
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return !*format ? 0 : *format != '$' |
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? PlaceholderBitmask(format + 1) |
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: (CalculateOneBit(format + 1) | |
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PlaceholderBitmask(SkipNumber(format + 1))); |
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} |
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#endif // ABSL_BAD_CALL_IF |
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} // namespace substitute_internal |
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// |
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// PUBLIC API |
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// |
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// SubstituteAndAppend() |
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// |
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// Substitutes variables into a given format string and appends to a given |
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// output string. See file comments above for usage. |
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// |
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// The declarations of `SubstituteAndAppend()` below consist of overloads |
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// for passing 0 to 10 arguments, respectively. |
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// |
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// NOTE: A zero-argument `SubstituteAndAppend()` may be used within variadic |
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// templates to allow a variable number of arguments. |
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// |
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// Example: |
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// template <typename... Args> |
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// void VarMsg(std::string* boilerplate, absl::string_view format, |
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// const Args&... args) { |
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// absl::SubstituteAndAppend(boilerplate, format, args...); |
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// } |
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// |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format) { |
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substitute_internal::SubstituteAndAppendArray(output, format, nullptr, 0); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0) { |
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const absl::string_view args[] = {a0.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1) { |
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const absl::string_view args[] = {a0.piece(), a1.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(), |
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a3.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(), |
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a3.piece(), a4.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(), |
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a3.piece(), a4.piece(), a5.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend(std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, |
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const substitute_internal::Arg& a6) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(), |
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a3.piece(), a4.piece(), a5.piece(), |
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a6.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend( |
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std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4, const substitute_internal::Arg& a5, |
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const substitute_internal::Arg& a6, const substitute_internal::Arg& a7) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(), |
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a3.piece(), a4.piece(), a5.piece(), |
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a6.piece(), a7.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend( |
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std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4, const substitute_internal::Arg& a5, |
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const substitute_internal::Arg& a6, const substitute_internal::Arg& a7, |
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const substitute_internal::Arg& a8) { |
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const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(), |
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a3.piece(), a4.piece(), a5.piece(), |
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a6.piece(), a7.piece(), a8.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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inline void SubstituteAndAppend( |
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std::string* output, absl::string_view format, |
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const substitute_internal::Arg& a0, const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4, const substitute_internal::Arg& a5, |
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const substitute_internal::Arg& a6, const substitute_internal::Arg& a7, |
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const substitute_internal::Arg& a8, const substitute_internal::Arg& a9) { |
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const absl::string_view args[] = { |
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a0.piece(), a1.piece(), a2.piece(), a3.piece(), a4.piece(), |
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a5.piece(), a6.piece(), a7.piece(), a8.piece(), a9.piece()}; |
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substitute_internal::SubstituteAndAppendArray(output, format, args, |
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ABSL_ARRAYSIZE(args)); |
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} |
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#if defined(ABSL_BAD_CALL_IF) |
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// This body of functions catches cases where the number of placeholders |
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// doesn't match the number of data arguments. |
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void SubstituteAndAppend(std::string* output, const char* format) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 0, |
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"There were no substitution arguments " |
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"but this format std::string has a $[0-9] in it"); |
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void SubstituteAndAppend(std::string* output, const char* format, |
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const substitute_internal::Arg& a0) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1, |
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"There was 1 substitution argument given, but " |
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"this format std::string is either missing its $0, or " |
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"contains one of $1-$9"); |
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void SubstituteAndAppend(std::string* output, const char* format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 3, |
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"There were 2 substitution arguments given, but " |
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"this format std::string is either missing its $0/$1, or " |
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"contains one of $2-$9"); |
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void SubstituteAndAppend(std::string* output, const char* format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 7, |
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"There were 3 substitution arguments given, but " |
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"this format std::string is either missing its $0/$1/$2, or " |
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"contains one of $3-$9"); |
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void SubstituteAndAppend(std::string* output, const char* format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 15, |
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"There were 4 substitution arguments given, but " |
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"this format std::string is either missing its $0-$3, or " |
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"contains one of $4-$9"); |
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void SubstituteAndAppend(std::string* output, const char* format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 31, |
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"There were 5 substitution arguments given, but " |
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"this format std::string is either missing its $0-$4, or " |
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"contains one of $5-$9"); |
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void SubstituteAndAppend(std::string* output, const char* format, |
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const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, |
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const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, |
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const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 63, |
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"There were 6 substitution arguments given, but " |
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"this format std::string is either missing its $0-$5, or " |
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"contains one of $6-$9"); |
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void SubstituteAndAppend( |
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std::string* output, const char* format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 127, |
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"There were 7 substitution arguments given, but " |
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"this format std::string is either missing its $0-$6, or " |
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"contains one of $7-$9"); |
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void SubstituteAndAppend( |
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std::string* output, const char* format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
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const substitute_internal::Arg& a7) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 255, |
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"There were 8 substitution arguments given, but " |
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"this format std::string is either missing its $0-$7, or " |
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"contains one of $8-$9"); |
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void SubstituteAndAppend( |
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std::string* output, const char* format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
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const substitute_internal::Arg& a7, const substitute_internal::Arg& a8) |
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ABSL_BAD_CALL_IF( |
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substitute_internal::PlaceholderBitmask(format) != 511, |
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"There were 9 substitution arguments given, but " |
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"this format std::string is either missing its $0-$8, or contains a $9"); |
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void SubstituteAndAppend( |
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std::string* output, const char* format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
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const substitute_internal::Arg& a7, const substitute_internal::Arg& a8, |
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const substitute_internal::Arg& a9) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1023, |
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"There were 10 substitution arguments given, but this " |
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"format std::string doesn't contain all of $0 through $9"); |
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#endif // ABSL_BAD_CALL_IF |
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// Substitute() |
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// |
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// Substitutes variables into a given format string. See file comments above |
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// for usage. |
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// |
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// The declarations of `Substitute()` below consist of overloads for passing 0 |
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// to 10 arguments, respectively. |
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// |
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// NOTE: A zero-argument `Substitute()` may be used within variadic templates to |
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// allow a variable number of arguments. |
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// |
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// Example: |
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// template <typename... Args> |
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// void VarMsg(absl::string_view format, const Args&... args) { |
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// std::string s = absl::Substitute(format, args...); |
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ABSL_MUST_USE_RESULT inline std::string Substitute(absl::string_view format) { |
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std::string result; |
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SubstituteAndAppend(&result, format); |
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return result; |
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} |
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0); |
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return result; |
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} |
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1); |
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return result; |
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} |
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
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const substitute_internal::Arg& a7) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6, a7); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
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const substitute_internal::Arg& a7, const substitute_internal::Arg& a8) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6, a7, a8); |
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return result; |
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} |
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|
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ABSL_MUST_USE_RESULT inline std::string Substitute( |
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absl::string_view format, const substitute_internal::Arg& a0, |
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const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
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const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
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const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
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const substitute_internal::Arg& a7, const substitute_internal::Arg& a8, |
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const substitute_internal::Arg& a9) { |
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std::string result; |
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SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9); |
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return result; |
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} |
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|
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#if defined(ABSL_BAD_CALL_IF) |
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// This body of functions catches cases where the number of placeholders |
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// doesn't match the number of data arguments. |
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std::string Substitute(const char* format) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 0, |
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"There were no substitution arguments " |
|
"but this format std::string has a $[0-9] in it"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0) |
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ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1, |
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"There was 1 substitution argument given, but " |
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"this format std::string is either missing its $0, or " |
|
"contains one of $1-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 3, |
|
"There were 2 substitution arguments given, but " |
|
"this format std::string is either missing its $0/$1, or " |
|
"contains one of $2-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, |
|
const substitute_internal::Arg& a2) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 7, |
|
"There were 3 substitution arguments given, but " |
|
"this format std::string is either missing its $0/$1/$2, or " |
|
"contains one of $3-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, |
|
const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 15, |
|
"There were 4 substitution arguments given, but " |
|
"this format std::string is either missing its $0-$3, or " |
|
"contains one of $4-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, |
|
const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3, |
|
const substitute_internal::Arg& a4) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 31, |
|
"There were 5 substitution arguments given, but " |
|
"this format std::string is either missing its $0-$4, or " |
|
"contains one of $5-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, |
|
const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3, |
|
const substitute_internal::Arg& a4, |
|
const substitute_internal::Arg& a5) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 63, |
|
"There were 6 substitution arguments given, but " |
|
"this format std::string is either missing its $0-$5, or " |
|
"contains one of $6-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, |
|
const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3, |
|
const substitute_internal::Arg& a4, |
|
const substitute_internal::Arg& a5, |
|
const substitute_internal::Arg& a6) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 127, |
|
"There were 7 substitution arguments given, but " |
|
"this format std::string is either missing its $0-$6, or " |
|
"contains one of $7-$9"); |
|
|
|
std::string Substitute(const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, |
|
const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3, |
|
const substitute_internal::Arg& a4, |
|
const substitute_internal::Arg& a5, |
|
const substitute_internal::Arg& a6, |
|
const substitute_internal::Arg& a7) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 255, |
|
"There were 8 substitution arguments given, but " |
|
"this format std::string is either missing its $0-$7, or " |
|
"contains one of $8-$9"); |
|
|
|
std::string Substitute( |
|
const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
|
const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
|
const substitute_internal::Arg& a7, const substitute_internal::Arg& a8) |
|
ABSL_BAD_CALL_IF( |
|
substitute_internal::PlaceholderBitmask(format) != 511, |
|
"There were 9 substitution arguments given, but " |
|
"this format std::string is either missing its $0-$8, or contains a $9"); |
|
|
|
std::string Substitute( |
|
const char* format, const substitute_internal::Arg& a0, |
|
const substitute_internal::Arg& a1, const substitute_internal::Arg& a2, |
|
const substitute_internal::Arg& a3, const substitute_internal::Arg& a4, |
|
const substitute_internal::Arg& a5, const substitute_internal::Arg& a6, |
|
const substitute_internal::Arg& a7, const substitute_internal::Arg& a8, |
|
const substitute_internal::Arg& a9) |
|
ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1023, |
|
"There were 10 substitution arguments given, but this " |
|
"format std::string doesn't contain all of $0 through $9"); |
|
#endif // ABSL_BAD_CALL_IF |
|
|
|
} // namespace absl |
|
|
|
#endif // ABSL_STRINGS_SUBSTITUTE_H_
|
|
|