+31
-0
lines changedFilter options
+31
-0
lines changed Original file line number Diff line number Diff line change
@@ -902,6 +902,9 @@ export class RegExpValidator {
902 902
if (cp === RightParenthesis) {
903 903
this.raise("Unmatched ')'")
904 904
}
905 +
if (cp === ReverseSolidus) {
906 +
this.raise("\\ at end of pattern")
907 +
}
905 908
if (cp === RightSquareBracket || cp === RightCurlyBracket) {
906 909
this.raise("Lone quantifier brackets")
907 910
}
@@ -1176,6 +1179,7 @@ export class RegExpValidator {
1176 1179
return (
1177 1180
this.eatDot() ||
1178 1181
this.eatReverseSolidusAtomEscape() ||
1182 +
this.eatReverseSolidusFollowedByC() ||
1179 1183
this.eatCharacterClass() ||
1180 1184
this.eatUncapturingGroup() ||
1181 1185
this.eatCapturingGroup() ||
@@ -1184,6 +1188,20 @@ export class RegExpValidator {
1184 1188
)
1185 1189
}
1186 1190 1191 +
// \ [lookahead = c]
1192 +
private eatReverseSolidusFollowedByC(): boolean {
1193 +
if (
1194 +
this.currentCodePoint === ReverseSolidus &&
1195 +
this.nextCodePoint === LatinSmallLetterC
1196 +
) {
1197 +
this._lastIntValue = this.currentCodePoint
1198 +
this.advance()
1199 +
this.onCharacter(this.index - 1, this.index, ReverseSolidus)
1200 +
return true
1201 +
}
1202 +
return false
1203 +
}
1204 + 1187 1205
// https://www.ecma-international.org/ecma-262/8.0/#prod-strict-InvalidBracedQuantifier
1188 1206
private eatInvalidBracedQuantifier(): boolean {
1189 1207
if (this.eatBracedQuantifier(true)) {
@@ -1222,6 +1240,7 @@ export class RegExpValidator {
1222 1240
cp !== -1 &&
1223 1241
cp !== CircumflexAccent &&
1224 1242
cp !== DollarSign &&
1243 +
cp !== ReverseSolidus &&
1225 1244
cp !== FullStop &&
1226 1245
cp !== Asterisk &&
1227 1246
cp !== PlusSign &&
@@ -1457,6 +1476,7 @@ export class RegExpValidator {
1457 1476
}
1458 1477 1459 1478
// https://www.ecma-international.org/ecma-262/8.0/#prod-RegExpUnicodeEscapeSequence
1479 +
//eslint-disable-next-line complexity
1460 1480
private eatRegExpUnicodeEscapeSequence(): boolean {
1461 1481
const start = this.index
1462 1482
@@ -74,3 +74,14 @@ describe("parseRegExpLiteral function:", () => {
74 74
assert.deepStrictEqual(actual, expected)
75 75
})
76 76
})
77 + 78 +
describe("RegExpParser:", () => {
79 +
describe("parsePattern function", () => {
80 +
it("should throw syntax error on '\\'.", () => {
81 +
assert.throws(
82 +
() => new RegExpParser().parsePattern("\\"),
83 +
/\\ at end of pattern/,
84 +
)
85 +
})
86 +
})
87 +
})
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