diff options
Diffstat (limited to 'semantics.c')
| -rw-r--r-- | semantics.c | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/semantics.c b/semantics.c index c1e2b29..4545303 100644 --- a/semantics.c +++ b/semantics.c @@ -493,7 +493,7 @@ CVar_t semantics_pdecl(CNode *p, CScope_t scope) { CVar_t semantics_params(CNode *p, CScope_t scope) { CHECK_TYPE(p, PARAMS); static CVar dummy; - CVar_t params = NULL; + CVar_t params = &dummy, tail = params; CTable_t ct; if (!(p = p->chd)) return NULL; /* no parameters */ ct = ctable_create(bkdr_hash, ctable_cvar_print); @@ -504,16 +504,12 @@ CVar_t semantics_params(CNode *p, CScope_t scope) { if (scope) /* params inside a function definition */ if (!ctable_insert(ct, var->name, var, 0)) ERROR((var->ast, "redefinition of parameter '%s'", var->name)); - var->next = params; - params = var; - /* tail->next = var; tail = var; - */ } ctable_destory(ct); - /* tail->next = NULL; */ - return params; + tail->next = NULL; + return params->next; } ExpType semantics_exp(CNode *, CScope_t); @@ -1196,7 +1192,49 @@ ExpType semantics_exp(CNode *p, CScope_t scope) { res.type = basic_type_char; res.lval = 0; p->ext.is_const = 1; - p->ext.const_val = p->rec.intval; + { + char *val = p->rec.strval; + int intval; + int len = strlen(val); + if (*val == '\\') + { + if (len == 2) + switch (val[1]) + { + case 'a': intval = '\a'; break; + case 'b': intval = '\b'; break; + case 'f': intval = '\f'; break; + case 'n': intval = '\n'; break; + case 'r': intval = '\r'; break; + case 't': intval = '\t'; break; + case 'v': intval = '\v'; break; + case '\\': intval = '\\'; break; + case '\'': intval = '\''; break; + case '"': intval = '\"'; break; + case '\?': intval = '\?'; break; + case '0': intval = '\0'; break; + default: + ERROR((p, "unknown escape sequence")); + } + else + { + switch (val[1]) + { + case '0': + sscanf(val + 2, "%o", &intval); + break; + case 'x': + sscanf(val + 2, "%x", &intval); + break; + default: + ERROR((p, "unknown escape sequence")); + } + } + } + else + intval = *val; + p->ext.const_val = intval; + } break; case STR: { |