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WIP:Update regex grammar for the special character #119

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WIP:Update regex grammar for the special character #119

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36 changes: 34 additions & 2 deletions grammar.pegjs
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Original file line number Diff line number Diff line change
Expand Up @@ -86,8 +86,8 @@ attr
path = i:identifierName { return { type: 'literal', value: i }; }
type = "type(" _ t:[^ )]+ _ ")" { return { type: 'type', value: t.join('') }; }
flags = [imsu]+
regex = "/" d:[^/]+ "/" flgs:flags? { return {
type: 'regexp', value: new RegExp(d.join(''), flgs ? flgs.join('') : '') };
regex = "/" pattern:$RegularExpressionBody "/" flgs:flags? { return {
type: 'regexp', value: new RegExp(pattern, flgs ? flgs.join('') : '') };
}

field = "." i:identifierName is:("." identifierName)* {
Expand All @@ -107,3 +107,35 @@ nthLastChild = ":nth-last-child(" _ n:[0-9]+ _ ")" { return nthLast(parseInt(n.j
class = ":" c:("statement"i / "expression"i / "declaration"i / "function"i / "pattern"i) {
return { type: 'class', name: c };
}

RegularExpressionBody
= RegularExpressionFirstChar RegularExpressionChar*

RegularExpressionFirstChar
= ![*\\/[] RegularExpressionNonTerminator
/ RegularExpressionBackslashSequence
/ RegularExpressionClass

RegularExpressionChar
= ![\\/[] RegularExpressionNonTerminator
/ RegularExpressionBackslashSequence
/ RegularExpressionClass

RegularExpressionBackslashSequence
= "\\" RegularExpressionNonTerminator

RegularExpressionNonTerminator
= !LineTerminator SourceCharacter

RegularExpressionClass
= "[" RegularExpressionClassChar* "]"

RegularExpressionClassChar
= ![\]\\] RegularExpressionNonTerminator
/ RegularExpressionBackslashSequence

LineTerminator
= [\n\r\u2028\u2029]

SourceCharacter
= .