lib/json
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fixes

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This commit is contained in:
Niels
2015-02-11 09:41:23 +01:00
parent 8a4e127a57
commit 5d280143b7
3 changed files with 266 additions and 217 deletions
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51
src/json.hpp.re2c
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@ -2415,19 +2415,30 @@ class basic_json
inline lexer() = default;
/*!max:re2c */
/*!
This function implements a scanner for JSON. It is specified using
regular expressions that try to follow RFC 7159 and ECMA-404 as close
as possible. These regular expressions are then translated into a
deterministic finite automaton (DFA) by the tool RE2C. As a result, the
translated code for this function consists of a large block of code
with goto jumps.
@return the class of the next token read from the buffer
@todo Unicode support needs to be checked.
*/
inline token_type scan()
{
#define YYFILL(n)
m_start = m_cursor;
/*!re2c
re2c:define:YYCURSOR = m_cursor;
re2c:define:YYLIMIT = m_limit;
re2c:define:YYCTYPE = char;
re2c:define:YYCTXMARKER = m_ctxmarker;
re2c:define:YYMARKER = m_marker;
re2c:indent:top = 1;
re2c:yyfill:enable = 0;
re2c:labelprefix = "json_parser_";
// structural characters
"[" { return token_type::begin_array; }
@ -2466,7 +2477,7 @@ class basic_json
string { return token_type::value_string; }
// end of file
'\000' { return token_type::end_of_input; }
'\000' { return token_type::end_of_input; }
*/
}
@ -2476,11 +2487,11 @@ class basic_json
}
/*!
The pointer m_begin points to the opening quote of the string, and
m_cursor past the closing quote of the string. We create a std::string from
the character after the opening quotes (m_begin+1) until the character
before the closing quotes (hence subtracting 2 characters from the pointer
difference of the two pointers).
The pointer m_start points to the opening quote of the string, and
m_cursor past the closing quote of the string. We create a std::string
from the character after the opening quotes (m_begin+1) until the
character before the closing quotes (hence subtracting 2 characters
from the pointer difference of the two pointers).
@return string value of current token without opening and closing quotes
@ -2493,14 +2504,13 @@ class basic_json
inline number_float_t get_number() const
{
// The pointer m_begin points to the beginning of the
// parsed number. We pass this pointer to std::strtod which
// sets endptr to the first character past the converted
// number. If this pointer is not the same as m_cursor,
// then either more or less characters have been used
// during the comparison. This can happen for inputs like
// "01" which will be treated like number 0 followed by
// number 1.
// The pointer m_begin points to the beginning of the parsed
// number. We pass this pointer to std::strtod which sets endptr to
// the first character past the converted number. If this pointer is
// not the same as m_cursor, then either more or less characters
// have been used during the comparison. This can happen for inputs
// like "01" which will be treated like number 0 followed by number
// 1.
// conversion
char* endptr;
@ -2519,13 +2529,16 @@ class basic_json
}
private:
/// the buffer
const char* m_content = nullptr;
/// pointer to he beginning of the current symbol
const char* m_start = nullptr;
/// pointer to the current symbol
const char* m_cursor = nullptr;
/// pointer to the end of the buffer
const char* m_limit = nullptr;
/// pointer for backtracking information
const char* m_marker = nullptr;
const char* m_ctxmarker = nullptr;
};
class parser