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expression grammar - sync with master (https://github.com/mapnik/mapnik/pull/3287)

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This commit is contained in:
artemp 2016-02-09 16:24:37 +01:00
parent 7811b779a0
commit 561fadd4ff
1 changed files with 15 additions and 9 deletions
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24
include/mapnik/expression_grammar_x3_def.hpp
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@ -285,6 +285,7 @@ namespace mapnik { namespace grammar {
expression_grammar_type const expression("expression");
// rules
x3::rule<class logical_expression, mapnik::expr_node> const logical_expression("logical expression");
x3::rule<class not_expression, mapnik::expr_node> const not_expression("not expression");
x3::rule<class conditional_expression, mapnik::expr_node> const conditional_expression("conditional expression");
x3::rule<class equality_expression, mapnik::expr_node> const equality_expression("equality expression");
x3::rule<class relational_expression, mapnik::expr_node> const relational_expression("relational expression");
@ -304,12 +305,20 @@ namespace mapnik { namespace grammar {
auto const ustring = x3::rule<class ustring, std::string> {} = no_skip[alpha > *alnum];
// start
auto const expression_def = logical_expression;
auto const expression_def = logical_expression [do_assign]
|
ustring[do_unicode]
;
auto const logical_expression_def = conditional_expression[do_assign] >
*(((lit("and") | lit("&&")) > conditional_expression[do_and])
auto const logical_expression_def = not_expression[do_assign] >
*(((lit("and") | lit("&&")) > not_expression[do_and])
|
((lit("or") | lit("||")) > conditional_expression[do_or]));
((lit("or") | lit("||")) > not_expression[do_or]));
auto const not_expression_def = conditional_expression[do_assign]
|
(lit("not") | lit('!')) > conditional_expression[do_not]
;
auto const conditional_expression_def = equality_expression[do_assign]
|
@ -385,20 +394,17 @@ namespace mapnik { namespace grammar {
|
global_attr[do_global_attribute]
|
(lit("not") | lit("!") ) > expression[do_not]
|
unary_func_expression[do_assign]
|
binary_func_expression[do_assign]
|
('(' > expression[do_assign] > ')')
|
ustring[do_unicode] // parse as un-quoted unicode string if we get here!
('(' > logical_expression[do_assign] > ')')
;
BOOST_SPIRIT_DEFINE (
expression,
logical_expression,
not_expression,
conditional_expression,
equality_expression,
relational_expression,