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repl: refine handling of illegal tokens #7104

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repl: refine handling of illegal tokens #7104

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320e3a1
repl: refine handling of illegal tokens
Trott Jun 2, 2016
75e4759
squash: nits
Trott Jun 4, 2016
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18 changes: 15 additions & 3 deletions lib/repl.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1154,6 +1154,11 @@ REPLServer.prototype.convertToContext = function(cmd) {
return cmd;
};

function bailOnIllegalToken(parser) {
return parser._literal === null &&
!parser.blockComment &&
!parser.regExpLiteral;
}

// If the error is that we've unexpectedly ended the input,
// then let the user try to recover by adding more input.
Expand All @@ -1166,9 +1171,16 @@ function isRecoverableError(e, self) {
return true;
}

return message.startsWith('Unexpected end of input') ||
message.startsWith('Unexpected token') ||
message.startsWith('missing ) after argument list');
if (message.startsWith('Unexpected end of input') ||
message.startsWith('missing ) after argument list'))
return true;

if (message.startsWith('Unexpected token')) {
if (message.includes('ILLEGAL') && bailOnIllegalToken(self.lineParser))
return false;
else
return true;
}
}
return false;
}
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4 changes: 4 additions & 0 deletions test/parallel/test-repl.js
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Expand Up @@ -324,6 +324,10 @@ function error_test() {
'undefined\n' + prompt_unix },
{ client: client_unix, send: '{ var x = 4; }',
expect: 'undefined\n' + prompt_unix },
// Illegal token is not recoverable outside string literal, RegExp literal,
// or block comment. https://github.com/nodejs/node/issues/3611
{ client: client_unix, send: 'a = 3.5e',
expect: /^SyntaxError: Unexpected token ILLEGAL/ },
]);
}

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