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LibJS: Make string to number coercion work for doubles

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This commit is contained in:
Linus Groh 2020-05-13 00:04:52 +01:00 • committed by Andreas Kling
parent 7b8765c311
commit 0c14ee035c
2 changed files with 7 additions and 10 deletions
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10
Libraries/LibJS/Runtime/Value.cpp
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@ -173,13 +173,11 @@ Value Value::to_number() const
return js_infinity(); return js_infinity();
if (string == "-Infinity") if (string == "-Infinity")
return js_negative_infinity(); return js_negative_infinity();
bool ok; char* endptr;
//FIXME: Parse in a better way auto parsed_double = strtod(string.characters(), &endptr);
auto parsed_int = string.to_int(ok); if (*endptr)
if (ok)
return Value(parsed_int);
return js_nan(); return js_nan();
return Value(parsed_double);
} }
case Type::Object: case Type::Object:
return m_value.as_object->to_primitive(Object::PreferredType::Number).to_number(); return m_value.as_object->to_primitive(Object::PreferredType::Number).to_number();

5
Libraries/LibJS/Tests/to-number-basic.js
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@ -27,9 +27,8 @@ try {
assert(-42 === -42); assert(-42 === -42);
assert(+1.23 === 1.23); assert(+1.23 === 1.23);
assert(-1.23 === -1.23); assert(-1.23 === -1.23);
// FIXME: returns NaN assert(+"1.23" === 1.23)
// assert(+"1.23" === 1.23) assert(-"1.23" === -1.23)
// assert(-"1.23" === -1.23)
assert(+"Infinity" === Infinity); assert(+"Infinity" === Infinity);
assert(+"+Infinity" === Infinity); assert(+"+Infinity" === Infinity);
assert(+"-Infinity" === -Infinity); assert(+"-Infinity" === -Infinity);