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Handle ++/-- better

This commit is contained in:
Wilson Lin 2020-01-09 00:57:14 +11:00
parent ba4b3f09f3
commit 8b4ec884b6
1 changed files with 15 additions and 1 deletions
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16
src/unit/script/js.rs
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@ -67,6 +67,10 @@ enum Syntax {
IfWhileForWithParentheses,
GroupingParentheses,
ArrayLiteralOrComputedProperty,
// `++` or `--`. One of these directly before `/` usually means it's postfix and operating the value to its left.
// TODO However, this is not always the case.
// TODO Doc
DoubleOperator,
LiteralStringOrTemplate,
LiteralNumber,
LiteralRegExp,
@ -262,7 +266,7 @@ pub fn process_js_script(proc: &mut Processor) -> ProcessingResult<()> {
let mut discarded_whitespace = false;
// Only updated when currently inside parentheses `()` directly after one of these keywords:
// - if (...)
// - while (...) // Note that this includes `do {...} while (...)`.
// - while (...) // Note that this includes `do {...} while (...)` without trailing semicolon.
// - for (...)
// - with (...)
let mut parenthesis_depth = 0usize;
@ -314,6 +318,16 @@ pub fn process_js_script(proc: &mut Processor) -> ProcessingResult<()> {
proc.accept_expect();
last_syntax = Syntax::ArrayLiteralOrComputedProperty;
}
c if c == b'+' || c == b'-' => {
proc.accept_expect();
if proc.peek()? == c {
proc.accept_expect();
last_syntax = Syntax::DoubleOperator;
} else {
chain!(proc.match_char(b'=').discard());
last_syntax = Syntax::Punctuator;
};
}
c if is_digit(c) => {
parse_literal_number(proc)?;
last_syntax = Syntax::LiteralNumber;