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json
Commit a6b02828 by Théo DELRIEU
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move conjunction/disjunction to the top of detail

parent d566bb81
Showing with 703 additions and 225 deletions
src/json.hpp
...@@ -168,6 +168,25 @@ using is_unscoped_enum = ...@@ -168,6 +168,25 @@ using is_unscoped_enum =
namespace detail namespace detail
{ {
// Implementation of 2 C++17 constructs: conjunction, negation.
// This is needed to avoid evaluating all the traits in a condition
//
// For example: not std::is_same<void, T>::value and has_value_type<T>::value
// will not compile when T = void (on MSVC at least)
// Whereas conjunction<negation<std::is_same<void, T>>, has_value_type<T>>::value
// will stop evaluating if negation<...>::value == false
//
// Please note that those constructs must be used with caution, since symbols can
// become very long quickly (which can slow down compilation and cause MSVC internal compiler errors)
// Only use it when you have too (see example ahead)
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};
template <class B> struct negation : std::integral_constant < bool, !B::value > {};
template <typename Json> std::string type_name(const Json& j) template <typename Json> std::string type_name(const Json& j)
{ {
switch (j.m_type) switch (j.m_type)
...@@ -317,25 +336,6 @@ struct external_constructor<value_t::object> ...@@ -317,25 +336,6 @@ struct external_constructor<value_t::object>
} }
}; };
// Implementation of 2 C++17 constructs: conjunction, negation.
// This is needed to avoid evaluating all the traits in a condition
//
// For example: not std::is_same<void, T>::value and has_value_type<T>::value
// will not compile when T = void (on MSVC at least)
// Whereas conjunction<negation<std::is_same<void, T>>, has_value_type<T>>::value
// will stop evaluating if negation<...>::value == false
//
// Please note that those constructs must be used with caution, since symbols can
// become very long quickly (which can slow down compilation and cause MSVC internal compiler errors)
// Only use it when you have too (see example ahead)
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};
template <class B> struct negation : std::integral_constant < bool, !B::value > {};
/*! /*!
@brief Helper to determine whether there's a key_type for T. @brief Helper to determine whether there's a key_type for T.
...@@ -9472,7 +9472,8 @@ class basic_json ...@@ -9472,7 +9472,8 @@ class basic_json
{ {
lexer_char_t yych; lexer_char_t yych;
unsigned int yyaccept = 0; unsigned int yyaccept = 0;
static const unsigned char yybm[] = { static const unsigned char yybm[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 32, 32, 0, 0, 32, 0, 0, 0, 32, 32, 0, 0, 32, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
...@@ -9506,396 +9507,873 @@ class basic_json ...@@ -9506,396 +9507,873 @@ class basic_json
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}; };
if ((m_limit - m_cursor) < 5) fill_line_buffer(5); // LCOV_EXCL_LINE if ((m_limit - m_cursor) < 5)
{
fill_line_buffer(5); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yybm[0+yych] & 32) { if (yybm[0 + yych] & 32)
{
goto basic_json_parser_6; goto basic_json_parser_6;
} }
if (yych <= '[') { if (yych <= '[')
if (yych <= '-') { {
if (yych <= '"') { if (yych <= '-')
if (yych <= 0x00) goto basic_json_parser_2; {
if (yych <= '!') goto basic_json_parser_4; if (yych <= '"')
{
if (yych <= 0x00)
{
goto basic_json_parser_2;
}
if (yych <= '!')
{
goto basic_json_parser_4;
}
goto basic_json_parser_9; goto basic_json_parser_9;
} else { }
if (yych <= '+') goto basic_json_parser_4; else
if (yych <= ',') goto basic_json_parser_10; {
if (yych <= '+')
{
goto basic_json_parser_4;
}
if (yych <= ',')
{
goto basic_json_parser_10;
}
goto basic_json_parser_12; goto basic_json_parser_12;
} }
} else { }
if (yych <= '9') { else
if (yych <= '/') goto basic_json_parser_4; {
if (yych <= '0') goto basic_json_parser_13; if (yych <= '9')
{
if (yych <= '/')
{
goto basic_json_parser_4;
}
if (yych <= '0')
{
goto basic_json_parser_13;
}
goto basic_json_parser_15; goto basic_json_parser_15;
} else { }
if (yych <= ':') goto basic_json_parser_17; else
if (yych <= 'Z') goto basic_json_parser_4; {
if (yych <= ':')
{
goto basic_json_parser_17;
}
if (yych <= 'Z')
{
goto basic_json_parser_4;
}
goto basic_json_parser_19; goto basic_json_parser_19;
} }
} }
} else { }
if (yych <= 'n') { else
if (yych <= 'e') { {
if (yych == ']') goto basic_json_parser_21; if (yych <= 'n')
{
if (yych <= 'e')
{
if (yych == ']')
{
goto basic_json_parser_21;
}
goto basic_json_parser_4;
}
else
{
if (yych <= 'f')
{
goto basic_json_parser_23;
}
if (yych <= 'm')
{
goto basic_json_parser_4; goto basic_json_parser_4;
} else { }
if (yych <= 'f') goto basic_json_parser_23;
if (yych <= 'm') goto basic_json_parser_4;
goto basic_json_parser_24; goto basic_json_parser_24;
} }
} else { }
if (yych <= 'z') { else
if (yych == 't') goto basic_json_parser_25; {
if (yych <= 'z')
{
if (yych == 't')
{
goto basic_json_parser_25;
}
goto basic_json_parser_4; goto basic_json_parser_4;
} else { }
if (yych <= '{') goto basic_json_parser_26; else
if (yych == '}') goto basic_json_parser_28; {
if (yych <= '{')
{
goto basic_json_parser_26;
}
if (yych == '}')
{
goto basic_json_parser_28;
}
goto basic_json_parser_4; goto basic_json_parser_4;
} }
} }
} }
basic_json_parser_2: basic_json_parser_2:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::end_of_input; break; } {
last_token_type = token_type::end_of_input;
break;
}
basic_json_parser_4: basic_json_parser_4:
++m_cursor; ++m_cursor;
basic_json_parser_5: basic_json_parser_5:
{ last_token_type = token_type::parse_error; break; } {
last_token_type = token_type::parse_error;
break;
}
basic_json_parser_6: basic_json_parser_6:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yybm[0+yych] & 32) { if (yybm[0 + yych] & 32)
{
goto basic_json_parser_6; goto basic_json_parser_6;
} }
{ continue; } {
continue;
}
basic_json_parser_9: basic_json_parser_9:
yyaccept = 0; yyaccept = 0;
yych = *(m_marker = ++m_cursor); yych = *(m_marker = ++m_cursor);
if (yych <= 0x1F) goto basic_json_parser_5; if (yych <= 0x1F)
if (yych <= 0x7F) goto basic_json_parser_31; {
if (yych <= 0xC1) goto basic_json_parser_5; goto basic_json_parser_5;
if (yych <= 0xF4) goto basic_json_parser_31; }
if (yych <= 0x7F)
{
goto basic_json_parser_31;
}
if (yych <= 0xC1)
{
goto basic_json_parser_5;
}
if (yych <= 0xF4)
{
goto basic_json_parser_31;
}
goto basic_json_parser_5; goto basic_json_parser_5;
basic_json_parser_10: basic_json_parser_10:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::value_separator; break; } {
last_token_type = token_type::value_separator;
break;
}
basic_json_parser_12: basic_json_parser_12:
yych = *++m_cursor; yych = *++m_cursor;
if (yych <= '/') goto basic_json_parser_5; if (yych <= '/')
if (yych <= '0') goto basic_json_parser_13; {
if (yych <= '9') goto basic_json_parser_15; goto basic_json_parser_5;
}
if (yych <= '0')
{
goto basic_json_parser_13;
}
if (yych <= '9')
{
goto basic_json_parser_15;
}
goto basic_json_parser_5; goto basic_json_parser_5;
basic_json_parser_13: basic_json_parser_13:
yyaccept = 1; yyaccept = 1;
yych = *(m_marker = ++m_cursor); yych = *(m_marker = ++m_cursor);
if (yych <= 'D') { if (yych <= 'D')
if (yych == '.') goto basic_json_parser_43; {
} else { if (yych == '.')
if (yych <= 'E') goto basic_json_parser_44; {
if (yych == 'e') goto basic_json_parser_44; goto basic_json_parser_43;
}
}
else
{
if (yych <= 'E')
{
goto basic_json_parser_44;
}
if (yych == 'e')
{
goto basic_json_parser_44;
}
} }
basic_json_parser_14: basic_json_parser_14:
{ last_token_type = token_type::value_number; break; } {
last_token_type = token_type::value_number;
break;
}
basic_json_parser_15: basic_json_parser_15:
yyaccept = 1; yyaccept = 1;
m_marker = ++m_cursor; m_marker = ++m_cursor;
if ((m_limit - m_cursor) < 3) fill_line_buffer(3); // LCOV_EXCL_LINE if ((m_limit - m_cursor) < 3)
{
fill_line_buffer(3); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yybm[0+yych] & 64) { if (yybm[0 + yych] & 64)
{
goto basic_json_parser_15; goto basic_json_parser_15;
} }
if (yych <= 'D') { if (yych <= 'D')
if (yych == '.') goto basic_json_parser_43; {
if (yych == '.')
{
goto basic_json_parser_43;
}
goto basic_json_parser_14; goto basic_json_parser_14;
} else { }
if (yych <= 'E') goto basic_json_parser_44; else
if (yych == 'e') goto basic_json_parser_44; {
if (yych <= 'E')
{
goto basic_json_parser_44;
}
if (yych == 'e')
{
goto basic_json_parser_44;
}
goto basic_json_parser_14; goto basic_json_parser_14;
} }
basic_json_parser_17: basic_json_parser_17:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::name_separator; break; } {
last_token_type = token_type::name_separator;
break;
}
basic_json_parser_19: basic_json_parser_19:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::begin_array; break; } {
last_token_type = token_type::begin_array;
break;
}
basic_json_parser_21: basic_json_parser_21:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::end_array; break; } {
last_token_type = token_type::end_array;
break;
}
basic_json_parser_23: basic_json_parser_23:
yyaccept = 0; yyaccept = 0;
yych = *(m_marker = ++m_cursor); yych = *(m_marker = ++m_cursor);
if (yych == 'a') goto basic_json_parser_45; if (yych == 'a')
{
goto basic_json_parser_45;
}
goto basic_json_parser_5; goto basic_json_parser_5;
basic_json_parser_24: basic_json_parser_24:
yyaccept = 0; yyaccept = 0;
yych = *(m_marker = ++m_cursor); yych = *(m_marker = ++m_cursor);
if (yych == 'u') goto basic_json_parser_46; if (yych == 'u')
{
goto basic_json_parser_46;
}
goto basic_json_parser_5; goto basic_json_parser_5;
basic_json_parser_25: basic_json_parser_25:
yyaccept = 0; yyaccept = 0;
yych = *(m_marker = ++m_cursor); yych = *(m_marker = ++m_cursor);
if (yych == 'r') goto basic_json_parser_47; if (yych == 'r')
{
goto basic_json_parser_47;
}
goto basic_json_parser_5; goto basic_json_parser_5;
basic_json_parser_26: basic_json_parser_26:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::begin_object; break; } {
last_token_type = token_type::begin_object;
break;
}
basic_json_parser_28: basic_json_parser_28:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::end_object; break; } {
last_token_type = token_type::end_object;
break;
}
basic_json_parser_30: basic_json_parser_30:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
basic_json_parser_31: basic_json_parser_31:
if (yybm[0+yych] & 128) { if (yybm[0 + yych] & 128)
{
goto basic_json_parser_30; goto basic_json_parser_30;
} }
if (yych <= 0xE0) { if (yych <= 0xE0)
if (yych <= '\\') { {
if (yych <= 0x1F) goto basic_json_parser_32; if (yych <= '\\')
if (yych <= '"') goto basic_json_parser_33; {
if (yych <= 0x1F)
{
goto basic_json_parser_32;
}
if (yych <= '"')
{
goto basic_json_parser_33;
}
goto basic_json_parser_35; goto basic_json_parser_35;
} else { }
if (yych <= 0xC1) goto basic_json_parser_32; else
if (yych <= 0xDF) goto basic_json_parser_36; {
if (yych <= 0xC1)
{
goto basic_json_parser_32;
}
if (yych <= 0xDF)
{
goto basic_json_parser_36;
}
goto basic_json_parser_37; goto basic_json_parser_37;
} }
} else { }
if (yych <= 0xEF) { else
if (yych == 0xED) goto basic_json_parser_39; {
if (yych <= 0xEF)
{
if (yych == 0xED)
{
goto basic_json_parser_39;
}
goto basic_json_parser_38; goto basic_json_parser_38;
} else { }
if (yych <= 0xF0) goto basic_json_parser_40; else
if (yych <= 0xF3) goto basic_json_parser_41; {
if (yych <= 0xF4) goto basic_json_parser_42; if (yych <= 0xF0)
{
goto basic_json_parser_40;
}
if (yych <= 0xF3)
{
goto basic_json_parser_41;
}
if (yych <= 0xF4)
{
goto basic_json_parser_42;
}
} }
} }
basic_json_parser_32: basic_json_parser_32:
m_cursor = m_marker; m_cursor = m_marker;
if (yyaccept == 0) { if (yyaccept == 0)
{
goto basic_json_parser_5; goto basic_json_parser_5;
} else { }
else
{
goto basic_json_parser_14; goto basic_json_parser_14;
} }
basic_json_parser_33: basic_json_parser_33:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::value_string; break; } {
last_token_type = token_type::value_string;
break;
}
basic_json_parser_35: basic_json_parser_35:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 'e') { if (yych <= 'e')
if (yych <= '/') { {
if (yych == '"') goto basic_json_parser_30; if (yych <= '/')
if (yych <= '.') goto basic_json_parser_32; {
if (yych == '"')
{
goto basic_json_parser_30;
}
if (yych <= '.')
{
goto basic_json_parser_32;
}
goto basic_json_parser_30;
}
else
{
if (yych <= '\\')
{
if (yych <= '[')
{
goto basic_json_parser_32;
}
goto basic_json_parser_30; goto basic_json_parser_30;
} else { }
if (yych <= '\\') { else
if (yych <= '[') goto basic_json_parser_32; {
if (yych == 'b')
{
goto basic_json_parser_30; goto basic_json_parser_30;
} else { }
if (yych == 'b') goto basic_json_parser_30;
goto basic_json_parser_32; goto basic_json_parser_32;
} }
} }
} else { }
if (yych <= 'q') { else
if (yych <= 'f') goto basic_json_parser_30; {
if (yych == 'n') goto basic_json_parser_30; if (yych <= 'q')
{
if (yych <= 'f')
{
goto basic_json_parser_30;
}
if (yych == 'n')
{
goto basic_json_parser_30;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= 's') { else
if (yych <= 'r') goto basic_json_parser_30; {
if (yych <= 's')
{
if (yych <= 'r')
{
goto basic_json_parser_30;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= 't') goto basic_json_parser_30; else
if (yych <= 'u') goto basic_json_parser_48; {
if (yych <= 't')
{
goto basic_json_parser_30;
}
if (yych <= 'u')
{
goto basic_json_parser_48;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} }
} }
} }
basic_json_parser_36: basic_json_parser_36:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x7F) goto basic_json_parser_32; if (yych <= 0x7F)
if (yych <= 0xBF) goto basic_json_parser_30; {
goto basic_json_parser_32;
}
if (yych <= 0xBF)
{
goto basic_json_parser_30;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_37: basic_json_parser_37:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x9F) goto basic_json_parser_32; if (yych <= 0x9F)
if (yych <= 0xBF) goto basic_json_parser_36; {
goto basic_json_parser_32;
}
if (yych <= 0xBF)
{
goto basic_json_parser_36;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_38: basic_json_parser_38:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x7F) goto basic_json_parser_32; if (yych <= 0x7F)
if (yych <= 0xBF) goto basic_json_parser_36; {
goto basic_json_parser_32;
}
if (yych <= 0xBF)
{
goto basic_json_parser_36;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_39: basic_json_parser_39:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x7F) goto basic_json_parser_32; if (yych <= 0x7F)
if (yych <= 0x9F) goto basic_json_parser_36; {
goto basic_json_parser_32;
}
if (yych <= 0x9F)
{
goto basic_json_parser_36;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_40: basic_json_parser_40:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x8F) goto basic_json_parser_32; if (yych <= 0x8F)
if (yych <= 0xBF) goto basic_json_parser_38; {
goto basic_json_parser_32;
}
if (yych <= 0xBF)
{
goto basic_json_parser_38;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_41: basic_json_parser_41:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x7F) goto basic_json_parser_32; if (yych <= 0x7F)
if (yych <= 0xBF) goto basic_json_parser_38; {
goto basic_json_parser_32;
}
if (yych <= 0xBF)
{
goto basic_json_parser_38;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_42: basic_json_parser_42:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 0x7F) goto basic_json_parser_32; if (yych <= 0x7F)
if (yych <= 0x8F) goto basic_json_parser_38; {
goto basic_json_parser_32;
}
if (yych <= 0x8F)
{
goto basic_json_parser_38;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_43: basic_json_parser_43:
yych = *++m_cursor; yych = *++m_cursor;
if (yych <= '/') goto basic_json_parser_32; if (yych <= '/')
if (yych <= '9') goto basic_json_parser_49; {
goto basic_json_parser_32;
}
if (yych <= '9')
{
goto basic_json_parser_49;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_44: basic_json_parser_44:
yych = *++m_cursor; yych = *++m_cursor;
if (yych <= ',') { if (yych <= ',')
if (yych == '+') goto basic_json_parser_51; {
if (yych == '+')
{
goto basic_json_parser_51;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= '-') goto basic_json_parser_51; else
if (yych <= '/') goto basic_json_parser_32; {
if (yych <= '9') goto basic_json_parser_52; if (yych <= '-')
{
goto basic_json_parser_51;
}
if (yych <= '/')
{
goto basic_json_parser_32;
}
if (yych <= '9')
{
goto basic_json_parser_52;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} }
basic_json_parser_45: basic_json_parser_45:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 'l') goto basic_json_parser_54; if (yych == 'l')
{
goto basic_json_parser_54;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_46: basic_json_parser_46:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 'l') goto basic_json_parser_55; if (yych == 'l')
{
goto basic_json_parser_55;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_47: basic_json_parser_47:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 'u') goto basic_json_parser_56; if (yych == 'u')
{
goto basic_json_parser_56;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_48: basic_json_parser_48:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= '@') { if (yych <= '@')
if (yych <= '/') goto basic_json_parser_32; {
if (yych <= '9') goto basic_json_parser_57; if (yych <= '/')
{
goto basic_json_parser_32;
}
if (yych <= '9')
{
goto basic_json_parser_57;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= 'F') goto basic_json_parser_57; else
if (yych <= '`') goto basic_json_parser_32; {
if (yych <= 'f') goto basic_json_parser_57; if (yych <= 'F')
{
goto basic_json_parser_57;
}
if (yych <= '`')
{
goto basic_json_parser_32;
}
if (yych <= 'f')
{
goto basic_json_parser_57;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} }
basic_json_parser_49: basic_json_parser_49:
yyaccept = 1; yyaccept = 1;
m_marker = ++m_cursor; m_marker = ++m_cursor;
if ((m_limit - m_cursor) < 3) fill_line_buffer(3); // LCOV_EXCL_LINE if ((m_limit - m_cursor) < 3)
{
fill_line_buffer(3); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= 'D') { if (yych <= 'D')
if (yych <= '/') goto basic_json_parser_14; {
if (yych <= '9') goto basic_json_parser_49; if (yych <= '/')
{
goto basic_json_parser_14;
}
if (yych <= '9')
{
goto basic_json_parser_49;
}
goto basic_json_parser_14; goto basic_json_parser_14;
} else { }
if (yych <= 'E') goto basic_json_parser_44; else
if (yych == 'e') goto basic_json_parser_44; {
if (yych <= 'E')
{
goto basic_json_parser_44;
}
if (yych == 'e')
{
goto basic_json_parser_44;
}
goto basic_json_parser_14; goto basic_json_parser_14;
} }
basic_json_parser_51: basic_json_parser_51:
yych = *++m_cursor; yych = *++m_cursor;
if (yych <= '/') goto basic_json_parser_32; if (yych <= '/')
if (yych >= ':') goto basic_json_parser_32; {
goto basic_json_parser_32;
}
if (yych >= ':')
{
goto basic_json_parser_32;
}
basic_json_parser_52: basic_json_parser_52:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= '/') goto basic_json_parser_14; if (yych <= '/')
if (yych <= '9') goto basic_json_parser_52; {
goto basic_json_parser_14;
}
if (yych <= '9')
{
goto basic_json_parser_52;
}
goto basic_json_parser_14; goto basic_json_parser_14;
basic_json_parser_54: basic_json_parser_54:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 's') goto basic_json_parser_58; if (yych == 's')
{
goto basic_json_parser_58;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_55: basic_json_parser_55:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 'l') goto basic_json_parser_59; if (yych == 'l')
{
goto basic_json_parser_59;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_56: basic_json_parser_56:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 'e') goto basic_json_parser_61; if (yych == 'e')
{
goto basic_json_parser_61;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_57: basic_json_parser_57:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= '@') { if (yych <= '@')
if (yych <= '/') goto basic_json_parser_32; {
if (yych <= '9') goto basic_json_parser_63; if (yych <= '/')
{
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= 'F') goto basic_json_parser_63; if (yych <= '9')
if (yych <= '`') goto basic_json_parser_32; {
if (yych <= 'f') goto basic_json_parser_63; goto basic_json_parser_63;
}
goto basic_json_parser_32;
}
else
{
if (yych <= 'F')
{
goto basic_json_parser_63;
}
if (yych <= '`')
{
goto basic_json_parser_32;
}
if (yych <= 'f')
{
goto basic_json_parser_63;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} }
basic_json_parser_58: basic_json_parser_58:
yych = *++m_cursor; yych = *++m_cursor;
if (yych == 'e') goto basic_json_parser_64; if (yych == 'e')
{
goto basic_json_parser_64;
}
goto basic_json_parser_32; goto basic_json_parser_32;
basic_json_parser_59: basic_json_parser_59:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::literal_null; break; } {
last_token_type = token_type::literal_null;
break;
}
basic_json_parser_61: basic_json_parser_61:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::literal_true; break; } {
last_token_type = token_type::literal_true;
break;
}
basic_json_parser_63: basic_json_parser_63:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= '@') { if (yych <= '@')
if (yych <= '/') goto basic_json_parser_32; {
if (yych <= '9') goto basic_json_parser_66; if (yych <= '/')
{
goto basic_json_parser_32;
}
if (yych <= '9')
{
goto basic_json_parser_66;
}
goto basic_json_parser_32;
}
else
{
if (yych <= 'F')
{
goto basic_json_parser_66;
}
if (yych <= '`')
{
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= 'F') goto basic_json_parser_66; if (yych <= 'f')
if (yych <= '`') goto basic_json_parser_32; {
if (yych <= 'f') goto basic_json_parser_66; goto basic_json_parser_66;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} }
basic_json_parser_64: basic_json_parser_64:
++m_cursor; ++m_cursor;
{ last_token_type = token_type::literal_false; break; } {
last_token_type = token_type::literal_false;
break;
}
basic_json_parser_66: basic_json_parser_66:
++m_cursor; ++m_cursor;
if (m_limit <= m_cursor) fill_line_buffer(1); // LCOV_EXCL_LINE if (m_limit <= m_cursor)
{
fill_line_buffer(1); // LCOV_EXCL_LINE
}
yych = *m_cursor; yych = *m_cursor;
if (yych <= '@') { if (yych <= '@')
if (yych <= '/') goto basic_json_parser_32; {
if (yych <= '9') goto basic_json_parser_30; if (yych <= '/')
{
goto basic_json_parser_32; goto basic_json_parser_32;
} else { }
if (yych <= 'F') goto basic_json_parser_30; if (yych <= '9')
if (yych <= '`') goto basic_json_parser_32; {
if (yych <= 'f') goto basic_json_parser_30; goto basic_json_parser_30;
}
goto basic_json_parser_32;
}
else
{
if (yych <= 'F')
{
goto basic_json_parser_30;
}
if (yych <= '`')
{
goto basic_json_parser_32;
}
if (yych <= 'f')
{
goto basic_json_parser_30;
}
goto basic_json_parser_32; goto basic_json_parser_32;
} }
} }
......
src/json.hpp.re2c
...@@ -168,6 +168,25 @@ using is_unscoped_enum = ...@@ -168,6 +168,25 @@ using is_unscoped_enum =
namespace detail namespace detail
{ {
// Implementation of 2 C++17 constructs: conjunction, negation.
// This is needed to avoid evaluating all the traits in a condition
//
// For example: not std::is_same<void, T>::value and has_value_type<T>::value
// will not compile when T = void (on MSVC at least)
// Whereas conjunction<negation<std::is_same<void, T>>, has_value_type<T>>::value
// will stop evaluating if negation<...>::value == false
//
// Please note that those constructs must be used with caution, since symbols can
// become very long quickly (which can slow down compilation and cause MSVC internal compiler errors)
// Only use it when you have too (see example ahead)
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};
template <class B> struct negation : std::integral_constant < bool, !B::value > {};
template <typename Json> std::string type_name(const Json& j) template <typename Json> std::string type_name(const Json& j)
{ {
switch (j.m_type) switch (j.m_type)
...@@ -317,25 +336,6 @@ struct external_constructor<value_t::object> ...@@ -317,25 +336,6 @@ struct external_constructor<value_t::object>
} }
}; };
// Implementation of 2 C++17 constructs: conjunction, negation.
// This is needed to avoid evaluating all the traits in a condition
//
// For example: not std::is_same<void, T>::value and has_value_type<T>::value
// will not compile when T = void (on MSVC at least)
// Whereas conjunction<negation<std::is_same<void, T>>, has_value_type<T>>::value
// will stop evaluating if negation<...>::value == false
//
// Please note that those constructs must be used with caution, since symbols can
// become very long quickly (which can slow down compilation and cause MSVC internal compiler errors)
// Only use it when you have too (see example ahead)
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};
template <class B> struct negation : std::integral_constant < bool, !B::value > {};
/*! /*!
@brief Helper to determine whether there's a key_type for T. @brief Helper to determine whether there's a key_type for T.
......
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