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implement character constants

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This commit is contained in:
Bernd Boeckmann
2022-10-15 21:20:18 +02:00
parent e23df88e89
commit 82aefe59d8
1 changed files with 13 additions and 1 deletions
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14
asm6502.c
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@@ -200,6 +200,7 @@ void dump_symbols(void)
#define ERR_BYTERNG 21
#define ERR_LOCAL_REDEF 22
#define ERR_NO_GLOBAL 23
#define ERR_CHR 24
char *err_msg[] = {
"",
@@ -225,7 +226,8 @@ char *err_msg[] = {
"string not terminated",
"byte value out of range",
"illegal redefinition of local label",
"local label definition requires previous global label"
"local label definition requires previous global label",
"malformed character constant"
};
jmp_buf error_jmp;
@@ -447,6 +449,16 @@ value primary(char **p)
SET_DEFINED(res);
}
}
else if (**p == '\'') {
(*p)++;
if (IS_END(**p) || (**p < 0x20)) error(ERR_CHR);
res.v = **p;
SET_TYPE(res, TYPE_BYTE);
SET_DEFINED(res);
(*p)++;
if (**p != '\'') error(ERR_CHR);
(*p)++;
}
else if (isalpha(**p)) {
ident(p, id);
sym = lookup(id, symbols);