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fix: Reorder binary operators to fix parser error #44

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fix: Reorder binary operators to fix parser error #44

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6 changes: 4 additions & 2 deletions lib/src/parser.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -117,10 +117,12 @@ class ExpressionParser {
'!=': 6,
'<=': 7,
'>=': 7,
'<': 7,
'>': 7,
// must be before '<' to prevent the parser from prematurely accepting it as the shorter operator
'<<': 8,
// must be before '>' to prevent the parser from prematurely accepting it as the shorter operator
'>>': 8,
'<': 7,
'>': 7,
'+': 9,
'-': 9,
'*': 10,
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9 changes: 7 additions & 2 deletions test/expressions_test.dart
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Expand Up @@ -151,7 +151,10 @@ void main() {
'1+2',
'a+b*2-Math.sqrt(2)',
'-1+2',
'1+4-5%2*5<4==(2+1)*1<=2&&2||2'
'1+4-5%2*5<4==(2+1)*1<=2&&2||2',
'1<<10',
'4>>5',
'2^4~/3>=x??4'
]) {
var w = parser.binaryExpression.end().parse(v);
expect(w is Success, isTrue, reason: 'Failed parsing `$v`');
Expand Down Expand Up @@ -188,10 +191,12 @@ void main() {
'x*x+y*y==z*z': true,
'n ?? 1': 1,
'5~/2': 2,
'4<<5<100>>1<<2': true,
};

expressions.forEach((e, r) {
expect(evaluator.eval(Expression.parse(e), context), r);
expect(evaluator.eval(Expression.parse(e), context), r,
reason: 'Failed evaluating `$e`');
});
});
test('index expressions', () {
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