56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
#include "../mpc.h"
|
|
|
|
int main(int argc, char **argv) {
|
|
|
|
mpc_parser_t* Number = mpc_new("number");
|
|
mpc_parser_t* Symbol = mpc_new("symbol");
|
|
mpc_parser_t* String = mpc_new("string");
|
|
mpc_parser_t* Comment = mpc_new("comment");
|
|
mpc_parser_t* Sexpr = mpc_new("sexpr");
|
|
mpc_parser_t* Qexpr = mpc_new("qexpr");
|
|
mpc_parser_t* Expr = mpc_new("expr");
|
|
mpc_parser_t* Lispy = mpc_new("lispy");
|
|
|
|
mpca_lang(MPCA_LANG_PREDICTIVE,
|
|
" number \"number\" : /[0-9]+/ ; "
|
|
" symbol \"symbol\" : /[a-zA-Z0-9_+\\-*\\/\\\\=<>!&]+/ ; "
|
|
" string \"string\" : /\"(\\\\.|[^\"])*\"/ ; "
|
|
" comment : /;[^\\r\\n]*/ ; "
|
|
" sexpr : '(' <expr>* ')' ; "
|
|
" qexpr : '{' <expr>* '}' ; "
|
|
" expr : <number> | <symbol> | <string> "
|
|
" | <comment> | <sexpr> | <qexpr> ; "
|
|
" lispy : /^/ <expr>* /$/ ; ",
|
|
Number, Symbol, String, Comment, Sexpr, Qexpr, Expr, Lispy, NULL);
|
|
|
|
if (argc > 1) {
|
|
|
|
mpc_result_t r;
|
|
if (mpc_parse_contents(argv[1], Lispy, &r)) {
|
|
mpc_ast_print(r.output);
|
|
mpc_ast_delete(r.output);
|
|
} else {
|
|
mpc_err_print(r.error);
|
|
mpc_err_delete(r.error);
|
|
}
|
|
|
|
} else {
|
|
|
|
mpc_result_t r;
|
|
if (mpc_parse_pipe("<stdin>", stdin, Lispy, &r)) {
|
|
mpc_ast_print(r.output);
|
|
mpc_ast_delete(r.output);
|
|
} else {
|
|
mpc_err_print(r.error);
|
|
mpc_err_delete(r.error);
|
|
}
|
|
|
|
}
|
|
|
|
mpc_cleanup(8, Number, Symbol, String, Comment, Sexpr, Qexpr, Expr, Lispy);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|