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0c0cf6f5a4
* examples/c++/Makefile, examples/c++/calc++/Makefile, * examples/c++/glr/Makefile, examples/c/bistromathic/Makefile, * examples/c/calc/Makefile, examples/c/glr/Makefile, * examples/c/lexcalc/Makefile, examples/c/mfcalc/Makefile, * examples/c/pushcalc/Makefile, examples/c/reccalc/Makefile, * examples/c/rpcalc/Makefile, examples/d/calc/Makefile, * examples/d/simple/Makefile, examples/java/calc/Makefile, * examples/java/simple/Makefile: Use --html to generate *.html directly. No longer demonstrate --xml. No longer show rules for xml to html. Use --header, not --defines. Use --graph without specifying the output file now that we generate *.gv by default.
reccalc - recursive calculator with Flex and Bison
In this example the generated parser is pure and reentrant: it can be used concurrently in different threads, or recursively. As a proof of this reentrancy, expressions in parenthesis are tokenized as strings, and then recursively parsed from the parser:
exp: STR
{
result r = parse_string ($1);
free ($1);
if (r.nerrs)
{
res->nerrs += r.nerrs;
YYERROR;
}
else
$$ = r.value;
}