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config: unicode range parser is more lenient about whitespace

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This commit is contained in:
Mitchell Hashimoto
2023-09-24 20:32:35 -07:00
parent bcafbc8abb
commit a8877d334c
1 changed files with 18 additions and 1 deletions
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19
src/config/Config.zig
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@ -1571,7 +1571,7 @@ pub const RepeatableCodepointMap = struct {
/// U+1234-5678
/// U+1234,U+5678
/// U+1234-5678,U+5678
/// U+1234,U+5678-9ABC
/// U+1234,U+5678-U+9ABC
///
/// etc.
const UnicodeRangeParser = struct {
@ -1586,12 +1586,16 @@ pub const RepeatableCodepointMap = struct {
const start = try self.parseCodepoint();
if (self.eof()) return .{ start, start };
// We're allowed to have any whitespace here
self.consumeWhitespace();
// Otherwise we expect either a range or a comma
switch (self.input[self.i]) {
// Comma means we have another codepoint but in a different
// range so we return our current codepoint.
',' => {
self.advance();
self.consumeWhitespace();
if (self.eof()) return error.InvalidValue;
return .{ start, start };
},
@ -1599,10 +1603,14 @@ pub const RepeatableCodepointMap = struct {
// Hyphen means we have a range.
'-' => {
self.advance();
self.consumeWhitespace();
if (self.eof()) return error.InvalidValue;
const end = try self.parseCodepoint();
self.consumeWhitespace();
if (!self.eof() and self.input[self.i] != ',') return error.InvalidValue;
self.advance();
self.consumeWhitespace();
if (start > end) return error.InvalidValue;
return .{ start, end };
},
@ -1610,6 +1618,15 @@ pub const RepeatableCodepointMap = struct {
}
}
fn consumeWhitespace(self: *UnicodeRangeParser) void {
while (!self.eof()) {
switch (self.input[self.i]) {
' ', '\t' => self.advance(),
else => return,
}
}
}
fn parseCodepoint(self: *UnicodeRangeParser) !u21 {
if (self.input[self.i] != 'U') return error.InvalidValue;
self.advance();