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expression_grammar X3 - allow backtracking on '<' operator so we can parse '<>' correctly

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artemp 2015-12-07 11:06:57 +00:00
parent 9a109bbf7d
commit 64f5de14b1
1 changed files with 1 additions and 1 deletions
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include/mapnik/expression_grammar_x3_def.hpp
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@ -323,7 +323,7 @@ namespace mapnik { namespace grammar {
auto const relational_expression_def = additive_expression[do_assign] >
*( ( (lit("<=") | lit("le")) > additive_expression [do_less_equal])
|
( (lit("<") | lit("lt")) > additive_expression[do_less])
( (lit("<") | lit("lt")) >> additive_expression[do_less]) // allow backtracking to be able handle '<' and '<>' correctly
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( (lit(">=") | lit("ge")) > additive_expression [do_greater_equal])
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