1. rcrnstn/cxx-str
  2. include
  3. str.hpp
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Add implementation

Robert Cranston authored on 18/05/2020 13:08:47
Showing 1 changed files
include/str.hpp
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+#ifndef STR_HPP_
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+#define STR_HPP_
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+
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+
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+#include <cerrno>
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+#include <exception>
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+#include <functional>
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+#include <initializer_list>
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+#include <sstream>
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+#include <stdexcept>
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+#include <string>
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+#include <system_error>
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+
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+
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+#define STR(VALUE) \
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+    (((std::ostringstream &)(std::ostringstream{} << VALUE)).str())
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+
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+#define STR_FUNC(VALUE) \
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+    ([=]() { return STR(VALUE); })
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+
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+#define STR_JOIN(JOIN, ITERATOR, VALUE, ...) \
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+    ([&]() \
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+    { \
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+        auto const & str_join_  = JOIN; \
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+        auto         str_oss_   = std::ostringstream{}; \
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+        auto         str_first_ = true; \
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+        for (auto const & ITERATOR : __VA_ARGS__) \
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+        { \
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+            auto str_value_ = STR(VALUE); \
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+            if (str_value_.empty()) \
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+                continue; \
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+            if (!str_first_) \
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+                str_oss_ << str_join_; \
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+            str_first_ = false; \
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+            str_oss_ << str_value_; \
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+        } \
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+        return str_oss_.str(); \
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+    }())
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+
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+#define STR_JOIN_INIT(JOIN, ITERATOR, VALUE, TYPE, ...) \
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+    STR_JOIN(JOIN, ITERATOR, VALUE, std::initializer_list<TYPE>__VA_ARGS__)
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+
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+#define STR_JOIN_INITSTR(JOIN, ITERATOR, VALUE, ...) \
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+    STR_JOIN_INIT(JOIN, ITERATOR, VALUE, std::string, __VA_ARGS__)
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+
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+
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+#define STR_CASE(CASE) \
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+    case (CASE): return (#CASE);
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+
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+#define STR_COND(VALUE, CASE) \
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+    ((VALUE) == (CASE)) ? (#CASE) :
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+
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+#define STR_INIT(CASE) \
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+    {(CASE), (#CASE)},
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+
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+#define STR_ARGS(ARG) \
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+    ARG, #ARG
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+
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+#define STR_ARGS_PREFIX(PREFIX, ARG) \
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+    PREFIX##ARG, #ARG
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+
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+
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+#define STR_HERE(VALUE) \
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+    STR(__FILE__ << ":" << __LINE__ << ":" << __func__ << ": " << VALUE)
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+
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+
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+#ifndef STR_EXCEPTION
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+    #define STR_EXCEPTION std::runtime_error
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+#endif
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+
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+#define STR_THROW(VALUE) \
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+    (throw STR_EXCEPTION{STR(VALUE)})
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+
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+#define STR_THROW_ERRNO() \
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+    STR_THROW(std::generic_category().message(errno) << ".")
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+
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+#define STR_RETHROW(VALUE) \
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+    try \
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+    { \
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+        throw; \
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+    } \
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+    catch (std::exception const & str_exception_) \
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+    { \
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+        STR_THROW(VALUE << str_exception_.what()); \
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+    }
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+
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+#define STR_NESTED_THROW(VALUE) \
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+    (std::throw_with_nested(STR_EXCEPTION{STR(VALUE)}))
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+
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+#define STR_NESTED_THROW_ERRNO() \
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+    STR_NESTED_THROW(std::generic_category().message(errno) << ".")
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+
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+#define STR_NESTED_WHAT(JOIN, EXCEPTION) \
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+    ([&]() \
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+    { \
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+        auto const & str_join_   = JOIN; \
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+        auto         str_oss_    = std::ostringstream{}; \
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+        auto         str_first_  = true; \
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+        auto str_what_ = std::function<void(std::exception const &)>{}; \
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+        str_what_ = [&](std::exception const & str_exception_) \
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+        { \
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+            if (!str_first_) \
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+                str_oss_ << str_join_; \
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+            str_first_ = false; \
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+            str_oss_ << str_exception_.what(); \
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+            try \
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+            { \
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+                std::rethrow_if_nested(str_exception_); \
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+            } \
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+            catch (std::exception const & str_exception_nested_) \
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+            { \
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+                str_what_(str_exception_nested_); \
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+            } \
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+        }; \
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+        str_what_(EXCEPTION); \
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+        return str_oss_.str(); \
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+    }())
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+
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+
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+#endif // STR_HPP_
Browse code

Add project

Robert Cranston authored on 23/02/2021 01:12:10
Showing 1 changed files
include/str.hpp
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