diff options
Diffstat (limited to 'compiler/parser.go')
| -rw-r--r-- | compiler/parser.go | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/compiler/parser.go b/compiler/parser.go index 55b8238..dd73c28 100644 --- a/compiler/parser.go +++ b/compiler/parser.go @@ -546,20 +546,38 @@ func (p *parser) parseCharProp() astNode { propName = "gc" propVal = sym1 } - cpRanges, err := findCodePointRanges(propName, propVal) + cpRanges, inverse, err := findCodePointRanges(propName, propVal) if err != nil { p.errMsgDetails = fmt.Sprintf("%v", err) raiseSyntaxError(synErrCharPropUnsupported) } var alt astNode - for _, r := range cpRanges { + if inverse { + r := cpRanges[0] from := genNormalCharAST(r.From) to := genNormalCharAST(r.To) - alt = genAltNode( - alt, - genRangeAST(from, to), - ) + alt = exclude(genRangeAST(from, to), genAnyCharAST()) + if alt == nil { + panic(fmt.Errorf("a pattern that isn't matching any symbols")) + } + for _, r := range cpRanges[1:] { + from := genNormalCharAST(r.From) + to := genNormalCharAST(r.To) + alt = exclude(genRangeAST(from, to), alt) + if alt == nil { + panic(fmt.Errorf("a pattern that isn't matching any symbols")) + } + } + } else { + for _, r := range cpRanges { + from := genNormalCharAST(r.From) + to := genNormalCharAST(r.To) + alt = genAltNode( + alt, + genRangeAST(from, to), + ) + } } if !p.consume(tokenKindRBrace) { |