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format invisible characters in strings to unicode escapes

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Aidan 2024-08-04 13:00:11 -04:00
parent b0be698354
commit 7be537dd55
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2 changed files with 66 additions and 4 deletions
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24
crates/compiler/fmt/src/expr.rs
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@ -618,6 +618,22 @@ fn starts_with_newline(expr: &Expr) -> bool {
}
}
fn fmt_str_body(body: &str, buf: &mut Buf) {
for c in body.chars() {
match c {
// Format blank characters as unicode escapes
'\u{200a}' => buf.push_str("\\u(200a)"),
'\u{200b}' => buf.push_str("\\u(200b)"),
'\u{200c}' => buf.push_str("\\u(200c)"),
'\u{feff}' => buf.push_str("\\u(feff)"),
// Don't change anything else in the string
' ' => buf.spaces(1),
'\n' => buf.newline(),
_ => buf.push(c),
}
}
}
fn format_str_segment(seg: &StrSegment, buf: &mut Buf, indent: u16) {
use StrSegment::*;
@ -627,10 +643,10 @@ fn format_str_segment(seg: &StrSegment, buf: &mut Buf, indent: u16) {
// a line break in the input string
match string.strip_suffix('\n') {
Some(string_without_newline) => {
buf.push_str_allow_spaces(string_without_newline);
fmt_str_body(string_without_newline, buf);
buf.newline();
}
None => buf.push_str_allow_spaces(string),
None => fmt_str_body(string, buf),
}
}
Unicode(loc_str) => {
@ -690,7 +706,7 @@ pub fn fmt_str_literal(buf: &mut Buf, literal: StrLiteral, indent: u16) {
buf.push_newline_literal();
for line in string.split('\n') {
buf.indent(indent);
buf.push_str_allow_spaces(line);
fmt_str_body(line, buf);
buf.push_newline_literal();
}
buf.indent(indent);
@ -698,7 +714,7 @@ pub fn fmt_str_literal(buf: &mut Buf, literal: StrLiteral, indent: u16) {
} else {
buf.indent(indent);
buf.push('"');
buf.push_str_allow_spaces(string);
fmt_str_body(string, buf);
buf.push('"');
};
}