102 lines
4.6 KiB
C
102 lines
4.6 KiB
C
#include "../mpc.h"
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int main(int argc, char **argv) {
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mpc_parser_t* Ident = mpc_new("ident");
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mpc_parser_t* Number = mpc_new("number");
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mpc_parser_t* Character = mpc_new("character");
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mpc_parser_t* String = mpc_new("string");
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mpc_parser_t* Factor = mpc_new("factor");
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mpc_parser_t* Term = mpc_new("term");
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mpc_parser_t* Lexp = mpc_new("lexp");
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mpc_parser_t* Stmt = mpc_new("stmt");
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mpc_parser_t* Exp = mpc_new("exp");
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mpc_parser_t* Typeident = mpc_new("typeident");
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mpc_parser_t* Decls = mpc_new("decls");
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mpc_parser_t* Args = mpc_new("args");
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mpc_parser_t* Body = mpc_new("body");
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mpc_parser_t* Procedure = mpc_new("procedure");
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mpc_parser_t* Main = mpc_new("main");
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mpc_parser_t* Includes = mpc_new("includes");
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mpc_parser_t* Smallc = mpc_new("smallc");
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mpc_err_t* err = mpca_lang(MPCA_LANG_DEFAULT,
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" ident : /[a-zA-Z_][a-zA-Z0-9_]*/ ; \n"
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" number : /[0-9]+/ ; \n"
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" character : /'.'/ ; \n"
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" string : /\"(\\\\.|[^\"])*\"/ ; \n"
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" \n"
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" factor : '(' <lexp> ')' \n"
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" | <number> \n"
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" | <character> \n"
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" | <string> \n"
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" | <ident> '(' <lexp>? (',' <lexp>)* ')' \n"
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" | <ident> ; \n"
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" \n"
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" term : <factor> (('*' | '/' | '%') <factor>)* ; \n"
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" lexp : <term> (('+' | '-') <term>)* ; \n"
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" \n"
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" stmt : '{' <stmt>* '}' \n"
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" | \"while\" '(' <exp> ')' <stmt> \n"
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" | \"if\" '(' <exp> ')' <stmt> \n"
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" | <ident> '=' <lexp> ';' \n"
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" | \"print\" '(' <lexp>? ')' ';' \n"
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" | \"return\" <lexp>? ';' \n"
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" | <ident> '(' <ident>? (',' <ident>)* ')' ';' ; \n"
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" \n"
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" exp : <lexp> '>' <lexp> \n"
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" | <lexp> '<' <lexp> \n"
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" | <lexp> \">=\" <lexp> \n"
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" | <lexp> \"<=\" <lexp> \n"
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" | <lexp> \"!=\" <lexp> \n"
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" | <lexp> \"==\" <lexp> ; \n"
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" \n"
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" typeident : (\"int\" | \"char\") <ident> ; \n"
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" decls : (<typeident> ';')* ; \n"
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" args : <typeident>? (',' <typeident>)* ; \n"
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" body : '{' <decls> <stmt>* '}' ; \n"
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" procedure : (\"int\" | \"char\") <ident> '(' <args> ')' <body> ; \n"
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" main : \"main\" '(' ')' <body> ; \n"
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" includes : (\"#include\" <string>)* ; \n"
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" smallc : /^/ <includes> <decls> <procedure>* <main> /$/ ; \n",
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Ident, Number, Character, String, Factor, Term, Lexp, Stmt, Exp,
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Typeident, Decls, Args, Body, Procedure, Main, Includes, Smallc, NULL);
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if (err != NULL) {
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mpc_err_print(err);
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mpc_err_delete(err);
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exit(1);
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}
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if (argc > 1) {
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mpc_result_t r;
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if (mpc_parse_contents(argv[1], Smallc, &r)) {
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mpc_ast_print(r.output);
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mpc_ast_delete(r.output);
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} else {
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mpc_err_print(r.error);
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mpc_err_delete(r.error);
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}
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} else {
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mpc_result_t r;
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if (mpc_parse_pipe("<stdin>", stdin, Smallc, &r)) {
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mpc_ast_print(r.output);
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mpc_ast_delete(r.output);
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} else {
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mpc_err_print(r.error);
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mpc_err_delete(r.error);
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}
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}
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mpc_cleanup(17, Ident, Number, Character, String, Factor, Term, Lexp, Stmt, Exp,
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Typeident, Decls, Args, Body, Procedure, Main, Includes, Smallc);
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return 0;
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}
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