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Fix JSON parsing for floats with negative exponents

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- also add unit tests to cover some broken (now fixed) cases.
This commit is contained in:
Glen Fraser 2017-10-24 20:10:50 +02:00
parent be225a9209
commit 79d985d6ff
2 changed files with 9 additions and 3 deletions
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7
include/chaiscript/utility/json.hpp
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@ -568,6 +568,7 @@ struct JSONParser {
char c = '\0';
bool isDouble = false;
bool isNegative = false;
bool isExpNegative = false;
long exp = 0;
if( offset < str.size() && str.at(offset) == '-' ) {
isNegative = true;
@ -587,7 +588,7 @@ struct JSONParser {
if( offset < str.size() && (c == 'E' || c == 'e' )) {
c = str.at(offset++);
if( c == '-' ) {
exp_str += '-';
isExpNegative = true;
} else if( c == '+' ) {
// do nothing
} else {
@ -603,9 +604,9 @@ struct JSONParser {
}
else {
break;
}
}
}
exp = chaiscript::parse_num<long>( exp_str );
exp = chaiscript::parse_num<long>( exp_str ) * (isExpNegative?-1:1);
}
else if( offset < str.size() && (!isspace( c ) && c != ',' && c != ']' && c != '}' )) {
throw std::runtime_error(std::string("JSON ERROR: Number: unexpected character '") + c + "'");

5
unittests/json_14.chai Normal file
View File

@ -0,0 +1,5 @@
assert_equal(from_json("9.9e-02"), 9.9e-02)
assert_equal(from_json("-13.57e+3"), -13570.0)
assert_equal(from_json("1E-01"), 0.1)
assert_equal(from_json("-314159e-5"), -3.14159)
assert_equal(from_json("5e+04"), 50000)