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Replaces assertion of user input to validation.

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This commit is contained in:
falsycat 2021-01-03 00:00:00 +00:00
parent fb43a77ec6
commit 967dc2cf3f
2 changed files with 18 additions and 17 deletions
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29
biner.l
View File

@ -4,6 +4,7 @@
#include <assert.h>
#include <errno.h>
#include <inttypes.h>
#include <stdbool.h>
#include "./tree.h"
#include "./zone.h"
@ -11,7 +12,7 @@
#include "generated/biner.y.h"
static inline biner_zone_ptr(char) strnew_(void);
static inline intmax_t parse_int_(int base);
static inline bool parse_int_(intmax_t* v, int base);
static inline void count_(void);
%}
@ -21,6 +22,7 @@ H [0-9A-Fa-f]
%%
[ \t\r\n]+ count_();
"//".* count_();
[/][*][^*]*[*]+([^*/][^*]*[*]+)*[/] count_(); /* TODO: detect unterminated comment */
@ -40,27 +42,24 @@ H [0-9A-Fa-f]
{I}({I}|{D})* { yylval.ptr = strnew_(); count_(); return IDENT; }
{D}+ { yylval.i = parse_int_(10); count_(); return INTEGER; }
0[xX]{H}+ { yylval.i = parse_int_(16); count_(); return INTEGER; }
{D}+ { return parse_int_(&yylval.i, 10)? INTEGER: OVERFLOWN_INTEGER; }
0[xX]{H}+ { return parse_int_(&yylval.i, 16)? INTEGER: OVERFLOWN_INTEGER; }
[\+\-\*\/\!\=\<\>\.\(\)[\]\{\}\;\,\&\|\~\^] { count_(); return yytext[0]; }
(.|\n) count_();
. { count_(); return yytext[0]; }
%%
static inline uintptr_t strnew_(void) {
return biner_zone_strnew(&biner_tree_parse_context_.zone, yytext);
}
static inline intmax_t parse_int_(int base) {
static inline bool parse_int_(intmax_t* v, int base) {
assert(v != NULL);
char* end = NULL;
const intmax_t v = strtoimax(yytext, &end, base);
/* TODO: replace asserts with throwing error */
assert((v != INTMAX_MIN && v != INTMAX_MAX) || errno != ERANGE);
assert(INT64_MIN <= v && v <= INT64_MAX);
assert(end != NULL && *end == 0);
return v;
*v = strtoimax(yytext, &end, base);
return
((*v != INTMAX_MIN && *v != INTMAX_MAX) || errno != ERANGE) &&
(INT64_MIN <= *v && *v <= INT64_MAX) &&
(end != NULL && *end == 0);
}
static inline void count_(void) {
const char* s = yytext;

4
biner.y
View File

@ -90,10 +90,12 @@ resolve_constant_(
uintptr_t ptr;
}
%token OVERFLOWN_INTEGER
%token EQUAL NEQUAL LESS_EQUAL GREATER_EQUAL AND OR BIT_LSHIFT BIT_RSHIFT
%token CONST ENUM STRUCT UNION
%token <ptr> IDENT
%token <i> INTEGER;
%token <i> INTEGER
%type <ptr> decl_list decl
%type <ptr> enum_member_list enum_member