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LibJS: Add BigInt

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This commit is contained in:
Linus Groh 2020-06-06 01:14:10 +01:00 • committed by Andreas Kling
parent 40829b849a
commit 0ff9d7e189
32 changed files with 1910 additions and 636 deletions
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36
Libraries/LibJS/Lexer.cpp
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@ -348,37 +348,36 @@ Token Lexer::next()
token_type = it->value;
}
} else if (is_numeric_literal_start()) {
token_type = TokenType::NumericLiteral;
if (m_current_char == '0') {
consume();
if (m_current_char == '.') {
// decimal
consume();
while (isdigit(m_current_char)) {
while (isdigit(m_current_char))
consume();
}
if (m_current_char == 'e' || m_current_char == 'E') {
if (m_current_char == 'e' || m_current_char == 'E')
consume_exponent();
}
} else if (m_current_char == 'e' || m_current_char == 'E') {
consume_exponent();
} else if (m_current_char == 'o' || m_current_char == 'O') {
// octal
consume();
while (m_current_char >= '0' && m_current_char <= '7') {
while (m_current_char >= '0' && m_current_char <= '7')
consume();
}
} else if (m_current_char == 'b' || m_current_char == 'B') {
// binary
consume();
while (m_current_char == '0' || m_current_char == '1') {
while (m_current_char == '0' || m_current_char == '1')
consume();
}
} else if (m_current_char == 'x' || m_current_char == 'X') {
// hexadecimal
consume();
while (isxdigit(m_current_char)) {
while (isxdigit(m_current_char))
consume();
}
} else if (m_current_char == 'n') {
consume();
token_type = TokenType::BigIntLiteral;
} else if (isdigit(m_current_char)) {
// octal without 'O' prefix. Forbidden in 'strict mode'
// FIXME: We need to make sure this produces a syntax error when in strict mode
@ -388,20 +387,21 @@ Token Lexer::next()
}
} else {
// 1...9 or period
while (isdigit(m_current_char)) {
while (isdigit(m_current_char))
consume();
}
if (m_current_char == '.') {
if (m_current_char == 'n') {
consume();
while (isdigit(m_current_char)) {
token_type = TokenType::BigIntLiteral;
} else {
if (m_current_char == '.') {
consume();
while (isdigit(m_current_char))
consume();
}
}
if (m_current_char == 'e' || m_current_char == 'E') {
consume_exponent();
if (m_current_char == 'e' || m_current_char == 'E')
consume_exponent();
}
}
token_type = TokenType::NumericLiteral;
} else if (m_current_char == '"' || m_current_char == '\'') {
char stop_char = m_current_char;
consume();