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[flexbuffers, json] Parse nan and inf (#6512)

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This commit is contained in:
Vladimir Glavnyy
2021-03-16 01:44:42 +07:00
committed by GitHub
parent 6543ba5297
commit 69b329fc87
3 changed files with 52 additions and 0 deletions
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24
src/idl_parser.cpp
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@@ -3009,6 +3009,15 @@ CheckedError Parser::SkipAnyJsonValue() {
return NoError();
}
CheckedError Parser::ParseFlexBufferNumericConstant(
flexbuffers::Builder *builder) {
double d;
if (!StringToNumber(attribute_.c_str(), &d))
return Error("unexpected floating-point constant: " + attribute_);
builder->Double(d);
return NoError();
}
CheckedError Parser::ParseFlexBufferValue(flexbuffers::Builder *builder) {
ParseDepthGuard depth_guard(this);
ECHECK(depth_guard.Check());
@@ -3056,6 +3065,18 @@ CheckedError Parser::ParseFlexBufferValue(flexbuffers::Builder *builder) {
EXPECT(kTokenFloatConstant);
break;
}
case '-':
case '+': {
// `[-+]?(nan|inf|infinity)`, see ParseSingleValue().
const auto sign = static_cast<char>(token_);
NEXT();
if (token_ != kTokenIdentifier)
return Error("floating-point constant expected");
attribute_.insert(0, 1, sign);
ECHECK(ParseFlexBufferNumericConstant(builder));
NEXT();
break;
}
default:
if (IsIdent("true")) {
builder->Bool(true);
@@ -3066,6 +3087,9 @@ CheckedError Parser::ParseFlexBufferValue(flexbuffers::Builder *builder) {
} else if (IsIdent("null")) {
builder->Null();
NEXT();
} else if (IsIdent("inf") || IsIdent("infinity") || IsIdent("nan")) {
ECHECK(ParseFlexBufferNumericConstant(builder));
NEXT();
} else
return TokenError();
}