RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 16:27:35 +00:00
Code Issues Activity Actions

LibJS: Add BigInt

Browse source
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
Download patch file Download diff file Expand all files Collapse all files

36
Libraries/LibJS/Lexer.cpp
View file

@ -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();