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LibJS+LibCrypto: Allow '_' as a numeric literal separator :^)

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This patch adds support for the NumericLiteralSeparator concept from
the ECMAScript grammar.
This commit is contained in:
Andreas Kling 2021-06-26 16:30:05 +02:00
parent 527c639c1f
commit 49018553d3
4 changed files with 61 additions and 15 deletions
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11
Userland/Libraries/LibJS/Token.cpp
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@ -53,7 +53,16 @@ TokenCategory Token::category() const
double Token::double_value() const
{
VERIFY(type() == TokenType::NumericLiteral);
String value_string(m_value);
StringBuilder builder;
for (auto ch : m_value) {
if (ch == '_')
continue;
builder.append(ch);
}
String value_string = builder.to_string();
if (value_string[0] == '0' && value_string.length() >= 2) {
if (value_string[1] == 'x' || value_string[1] == 'X') {
// hexadecimal