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This commit is contained in:
Niels 2015-02-10 23:05:45 +01:00
parent 1aebb6e6ed
commit f9797f8eb2
2 changed files with 717 additions and 360 deletions
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969
src/json.hpp
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104
src/json.hpp.re2c
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@ -2402,7 +2402,8 @@ class basic_json
end_object, end_object,
name_separator, name_separator,
value_separator, value_separator,
parse_error parse_error,
end_of_input
}; };
/// the type of a lexer character /// the type of a lexer character
@ -2611,56 +2612,59 @@ class basic_json
re2c:define:YYLIMIT = buffer_re2c_limit; re2c:define:YYLIMIT = buffer_re2c_limit;
*/ */
for (;;) lexer_start:
// set current to the begin of the buffer
current_re2c = buffer_re2c;
if (current_re2c == buffer_re2c_limit)
{ {
// set current to the begin of the buffer return last_token = token_type::end_of_input;
current_re2c = buffer_re2c;
/*!re2c
// whitespace
ws = [ \t\n\r]*;
ws { continue; }
// structural characters
"[" { return last_token = token_type::begin_array; }
"]" { return last_token = token_type::end_array; }
"{" { return last_token = token_type::begin_object; }
"}" { return last_token = token_type::end_object; }
"," { return last_token = token_type::value_separator; }
":" { return last_token = token_type::name_separator; }
// literal names
"null" { return last_token = token_type::literal_null; }
"true" { return last_token = token_type::literal_true; }
"false" { return last_token = token_type::literal_false; }
// number
decimal_point = [.];
digit = [0-9];
digit_1_9 = [1-9];
e = [eE];
minus = [-];
plus = [+];
zero = [0];
exp = e (minus|plus)? digit+;
frac = decimal_point digit+;
int = (zero|digit_1_9 digit*);
number = minus? int frac? exp?;
number { return last_token = token_type::value_number; }
// string
quotation_mark = [\"];
escape = [\\];
unescaped = [^\"\\];
escaped = escape ([\"\\/bfnrt] | [u][0-9a-fA-F]{4});
char = unescaped | escaped;
string = quotation_mark char* quotation_mark;
string { return last_token = token_type::value_string; }
// anything else is an error
* { return last_token = token_type::parse_error; }
*/
} }
/*!re2c
// whitespace
ws = [ \t\n\r]*;
ws { goto lexer_start; }
// structural characters
"[" { return last_token = token_type::begin_array; }
"]" { return last_token = token_type::end_array; }
"{" { return last_token = token_type::begin_object; }
"}" { return last_token = token_type::end_object; }
"," { return last_token = token_type::value_separator; }
":" { return last_token = token_type::name_separator; }
// literal names
"null" { return last_token = token_type::literal_null; }
"true" { return last_token = token_type::literal_true; }
"false" { return last_token = token_type::literal_false; }
// number
decimal_point = [.];
digit = [0-9];
digit_1_9 = [1-9];
e = [eE];
minus = [-];
plus = [+];
zero = [0];
exp = e (minus|plus)? digit+;
frac = decimal_point digit+;
int = (zero|digit_1_9 digit*);
number = minus? int frac? exp?;
number { return last_token = token_type::value_number; }
// string
quotation_mark = [\"];
escape = [\\];
unescaped = [^\"\\];
escaped = escape ([\"\\/bfnrt] | [u][0-9a-fA-F]{4});
char = unescaped | escaped;
string = quotation_mark char* quotation_mark;
string { return last_token = token_type::value_string; }
// anything else is an error
* { return last_token = token_type::parse_error; }
*/
} }
inline static std::string token_type_name(token_type t) inline static std::string token_type_name(token_type t)
@ -2693,6 +2697,8 @@ class basic_json
return ","; return ",";
case (token_type::parse_error): case (token_type::parse_error):
return "<parse error>"; return "<parse error>";
case (token_type::end_of_input):
return "<end of input>";
} }
} }