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yypush_parse
You call the function yypush_parse
to parse a single token. This
function is available if either the ‘%define api.push-pull push’ or
‘%define api.push-pull both’ declaration is used.
See A Push Parser.
yypstate *
yyps)The value returned by yypush_parse
is the same as for yyparse
with the following exception: it returns YYPUSH_MORE
if more input is
required to finish parsing the grammar.
After yypush_parse
returns a status other than YYPUSH_MORE
,
the parser instance yyps
may be reused for a new parse.
The fact that the parser state is reusable even after an error simplifies
reuse. For example, a calculator application which parses each input line
as an expression can just keep reusing the same yyps
even if an input
was invalid.