lval * ast_load_eval(char* fn, lenv *env) {
lval *r;
mpc_result_t parsed;
lval *ast;
lval *result;
if (mpc_parse_contents(fn, Lispy, &parsed)) {
ast = ast_read(parsed.output);
mpc_ast_delete(parsed.output);
while (ast->expr->count) {
result = lval_eval(expr_pop(ast->expr, 0), env);
if (result->type == LVAL_ERR) lval_println(result);
lval_del(result);
}
lval_del(ast);
r = lval_sexpr();
}
else {
char *err = mpc_err_string(parsed.error);
mpc_err_delete(parsed.error);
r = lval_err(err);
free(err);
}
return r;
}
ussval_t* builtin_load(ussenv_t* e, ussval_t* a) {
UASSERT_NUM("load", a, 1);
UASSERT_TYPE("load", a, 0, UVAL_STR);
/* Parse File given by string name */
mpc_result_t r;
parser_t *parser = parser_toplevel();
if (mpc_parse_contents(a->cell[0]->str, parser->uss, &r)) {
fprintf(stderr, "DEBUG: loading: %s\n", a->cell[0]->str);
ussenv_put(e, ussval_new_sym("file-path"), a->cell[0]);
ussenv_put(e, ussval_new_sym("file-dir"), ussval_new_str(dirname(a->cell[0]->str)));
/* Read contents */
ussval_t *expr = ussval_read(r.output);
mpc_ast_delete(r.output);
/* Evaluate each Expression */
while (expr->count) {
ussval_t *x = ussval_eval(e, ussval_pop(expr, 0));
/* If Evaluation leads to error print it */
if (x->type == UVAL_ERR) {
ussval_println(x);
}
ussval_del(x);
}
/* Delete expressions and arguments */
ussval_del(expr);
ussval_del(a);
parser_cleanup(parser);
//lenv_put(e, lval_sym("file-path"), LVAL_NIL);
//lenv_put(e, lval_sym("file-dir"), LVAL_NIL);
/* Return empty list */
return ussval_new_sexpr();
} else {
/* Get Parse Error as String */
char *err_msg = mpc_err_string(r.error);
mpc_err_delete(r.error);
/* Create new error message using it */
ussval_t *err = ussval_new_err("Could not load Library %s", err_msg);
free(err_msg);
ussval_del(a);
parser_cleanup(parser);
/* Cleanup and return error */
return err;
}
}
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>* /$/ ; ",
Number, Symbol, String, Comment, Sexpr, Qexpr, Expr, Lispy);
if (argc > 1) {
mpc_result_t r;
if (mpc_parse_contents(argv[1], Lispy, &r)) {
mpc_ast_print(r.output);
mpc_ast_delete(r.output);
} else {
mpc_err_print(r.error);
mpc_err_delete(r.error);
}
} else {
mpc_result_t r;
if (mpc_parse_pipe("<stdin>", stdin, Lispy, &r)) {
mpc_ast_print(r.output);
mpc_ast_delete(r.output);
} else {
mpc_err_print(r.error);
mpc_err_delete(r.error);
}
}
mpc_cleanup(8, Number, Symbol, String, Comment, Sexpr, Qexpr, Expr, Lispy);
return 0;
}
int main(int argc, char **argv) {
mpc_parser_t *Expr = mpc_new("expression");
mpc_parser_t *Prod = mpc_new("product");
mpc_parser_t *Value = mpc_new("value");
mpc_parser_t *Maths = mpc_new("maths");
mpca_lang(MPCA_LANG_PREDICTIVE,
" expression : <product> (('+' | '-') <product>)*; "
" product : <value> (('*' | '/') <value>)*; "
" value : /[0-9]+/ | '(' <expression> ')'; "
" maths : /^/ <expression> /$/; ",
Expr, Prod, Value, Maths, NULL);
mpc_print(Expr);
mpc_print(Prod);
mpc_print(Value);
mpc_print(Maths);
if (argc > 1) {
mpc_result_t r;
if (mpc_parse_contents(argv[1], Maths, &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, Maths, &r)) {
mpc_ast_print(r.output);
mpc_ast_delete(r.output);
} else {
mpc_err_print(r.error);
mpc_err_delete(r.error);
}
}
mpc_cleanup(4, Expr, Prod, Value, Maths);
return 0;
}
int main(int argc, char **argv) {
mpc_parser_t* Adjective = mpc_new("adjective");
mpc_parser_t* Noun = mpc_new("noun");
mpc_parser_t* Phrase = mpc_new("phrase");
mpc_parser_t* Doge = mpc_new("doge");
mpca_lang(MPCA_LANG_DEFAULT,
" adjective : \"wow\" | \"many\" | \"so\" | \"such\"; "
" noun : \"lisp\" | \"language\" | \"c\" | \"book\" | \"build\"; "
" phrase : <adjective> <noun>; "
" doge : /^/ <phrase>* /$/; ",
Adjective, Noun, Phrase, Doge, NULL);
if (argc > 1) {
mpc_result_t r;
if (mpc_parse_contents(argv[1], Doge, &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, Doge, &r)) {
mpc_ast_print(r.output);
mpc_ast_delete(r.output);
} else {
mpc_err_print(r.error);
mpc_err_delete(r.error);
}
}
mpc_cleanup(4, Adjective, Noun, Phrase, Doge);
return 0;
}
lval* builtin_load(lenv* e, lval* a) {
LASSERT_NUM("load", a, 1);
LASSERT_TYPE("load", a, 0, LVAL_STR);
//Parse file given by string as filename
mpc_result_t r;
if (mpc_parse_contents(a->cell[0]->str, blisp, &r)) {
//Read Contents
lval* expr = lval_read(r.output);
mpc_ast_delete(r.output);
//Evaluate expressions on stack
while (expr->count) {
lval* x = lval_eval(e, lval_pop(expr, 0));
if (x->type == LVAL_ERR) {
lval_println(x);
}
lval_del(x);
}
//Delete expression and args
lval_del(expr);
lval_del(a);
//Return empty list
return lval_sexpr();
} else {
//Get error message as string and return as lval_err
char* err_msg = mpc_err_string(r.error);
mpc_err_delete(r.error);
lval* err = lval_err("Could not load Library %s", err_msg);
free(err_msg);
lval_del(a);
//Cleanup and return error
return err;
}
}
