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https://github.com/mirror/tinycc.git
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Merge func_decl_list into decl0
Removes some code duplication and also implements one feature: checking for duplicate decls for old style parameters.
This commit is contained in:
Michael Matz
parent
7aef0522b0
commit
25522e4799
105
tccgen.c
105
tccgen.c
@ -79,7 +79,7 @@ static void parse_expr_type(CType *type);
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static void decl_initializer(CType *type, Section *sec, unsigned long c, int first, int size_only);
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static void block(int *bsym, int *csym, int is_expr);
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static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r, int has_init, int v, int scope);
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static int decl0(int l, int is_for_loop_init);
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static int decl0(int l, int is_for_loop_init, Sym *);
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static void expr_eq(void);
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static void vla_runtime_type_size(CType *type, int *a);
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static void vla_sp_restore(void);
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@ -3617,7 +3617,7 @@ static void struct_decl(CType *type, AttributeDef *ad, int u)
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get_tok_str(v, NULL));
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}
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if ((type1.t & VT_BTYPE) == VT_FUNC ||
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(type1.t & (VT_TYPEDEF | VT_STATIC | VT_EXTERN | VT_INLINE)))
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(type1.t & VT_STORAGE))
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tcc_error("invalid type for '%s'",
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get_tok_str(v, NULL));
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}
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@ -4012,7 +4012,7 @@ static int post_type(CType *type, AttributeDef *ad, int storage, int td)
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n = tok;
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if (n < TOK_UIDENT)
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expect("identifier");
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pt.t = VT_INT;
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pt.t = VT_VOID; /* invalid type */
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next();
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}
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convert_parameter_type(&pt);
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@ -5697,7 +5697,7 @@ static void block(int *bsym, int *csym, int is_expr)
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++local_scope;
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if (tok != ';') {
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/* c99 for-loop init decl? */
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if (!decl0(VT_LOCAL, 1)) {
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if (!decl0(VT_LOCAL, 1, NULL)) {
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/* no, regular for-loop init expr */
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gexpr();
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vpop();
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@ -6718,55 +6718,6 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
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}
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}
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/* parse an old style function declaration list */
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/* XXX: check multiple parameter */
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static void func_decl_list(Sym *func_sym)
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{
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AttributeDef ad;
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int v;
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Sym *s;
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CType btype, type;
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/* parse each declaration */
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while (tok != '{' && tok != ';' && tok != ',' && tok != TOK_EOF &&
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tok != TOK_ASM1 && tok != TOK_ASM2 && tok != TOK_ASM3) {
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if (!parse_btype(&btype, &ad))
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expect("declaration list");
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if (((btype.t & VT_BTYPE) == VT_ENUM ||
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(btype.t & VT_BTYPE) == VT_STRUCT) &&
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tok == ';') {
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/* we accept no variable after */
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} else {
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for(;;) {
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type = btype;
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type_decl(&type, &ad, &v, TYPE_DIRECT);
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/* find parameter in function parameter list */
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s = func_sym->next;
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while (s != NULL) {
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if ((s->v & ~SYM_FIELD) == v)
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goto found;
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s = s->next;
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}
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tcc_error("declaration for parameter '%s' but no such parameter",
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get_tok_str(v, NULL));
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found:
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/* check that no storage specifier except 'register' was given */
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if (type.t & VT_STORAGE)
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tcc_error("storage class specified for '%s'", get_tok_str(v, NULL));
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convert_parameter_type(&type);
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/* we can add the type (NOTE: it could be local to the function) */
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s->type = type;
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/* accept other parameters */
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if (tok == ',')
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next();
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else
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break;
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}
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}
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skip(';');
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}
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}
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/* parse a function defined by symbol 'sym' and generate its code in
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'cur_text_section' */
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static void gen_function(Sym *sym)
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@ -6860,8 +6811,9 @@ ST_FUNC void free_inline_functions(TCCState *s)
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dynarray_reset(&s->inline_fns, &s->nb_inline_fns);
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}
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/* 'l' is VT_LOCAL or VT_CONST to define default storage type */
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static int decl0(int l, int is_for_loop_init)
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/* 'l' is VT_LOCAL or VT_CONST to define default storage type, or VT_CMP
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if parsing old style parameter decl list (and FUNC_SYM is set then) */
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static int decl0(int l, int is_for_loop_init, Sym *func_sym)
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{
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int v, has_init, r;
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CType type, btype;
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@ -6872,9 +6824,8 @@ static int decl0(int l, int is_for_loop_init)
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if (!parse_btype(&btype, &ad)) {
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if (is_for_loop_init)
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return 0;
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/* skip redundant ';' */
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/* XXX: find more elegant solution */
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if (tok == ';') {
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/* skip redundant ';' if not in old parameter decl scope */
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if (tok == ';' && l != VT_CMP) {
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next();
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continue;
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}
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@ -6886,7 +6837,7 @@ static int decl0(int l, int is_for_loop_init)
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}
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/* special test for old K&R protos without explicit int
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type. Only accepted when defining global data */
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if (l == VT_LOCAL || tok < TOK_UIDENT)
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if (l != VT_CONST || tok < TOK_UIDENT)
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break;
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btype.t = VT_INT;
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}
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@ -6926,8 +6877,8 @@ static int decl0(int l, int is_for_loop_init)
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/* if old style function prototype, we accept a
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declaration list */
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sym = type.ref;
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if (sym->c == FUNC_OLD)
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func_decl_list(sym);
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if (sym->c == FUNC_OLD && l == VT_CONST)
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decl0(VT_CMP, 0, sym);
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}
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if (gnu_ext && (tok == TOK_ASM1 || tok == TOK_ASM2 || tok == TOK_ASM3)) {
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@ -6953,16 +6904,20 @@ static int decl0(int l, int is_for_loop_init)
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type.t |= ad.a.visibility << VT_VIS_SHIFT;
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if (tok == '{') {
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if (l == VT_LOCAL)
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if (l != VT_CONST)
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tcc_error("cannot use local functions");
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if ((type.t & VT_BTYPE) != VT_FUNC)
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expect("function definition");
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/* reject abstract declarators in function definition */
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/* reject abstract declarators in function definition
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make old style params without decl have int type */
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sym = type.ref;
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while ((sym = sym->next) != NULL)
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while ((sym = sym->next) != NULL) {
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if (!(sym->v & ~SYM_FIELD))
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expect("identifier");
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expect("identifier");
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if (sym->type.t == VT_VOID)
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sym->type = int_type;
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}
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/* XXX: cannot do better now: convert extern line to static inline */
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if ((type.t & (VT_EXTERN | VT_INLINE)) == (VT_EXTERN | VT_INLINE))
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@ -7036,7 +6991,23 @@ static int decl0(int l, int is_for_loop_init)
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}
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break;
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} else {
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if (type.t & VT_TYPEDEF) {
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if (l == VT_CMP) {
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/* find parameter in function parameter list */
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for (sym = func_sym->next; sym; sym = sym->next)
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if ((sym->v & ~SYM_FIELD) == v)
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goto found;
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tcc_error("declaration for parameter '%s' but no such parameter",
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get_tok_str(v, NULL));
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found:
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if (type.t & VT_STORAGE) /* 'register' is okay */
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tcc_error("storage class specified for '%s'",
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get_tok_str(v, NULL));
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if (sym->type.t != VT_VOID)
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tcc_error("redefinition of parameter '%s'",
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get_tok_str(v, NULL));
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convert_parameter_type(&type);
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sym->type = type;
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} else if (type.t & VT_TYPEDEF) {
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/* save typedefed type */
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/* XXX: test storage specifiers ? */
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sym = sym_find(v);
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@ -7110,7 +7081,7 @@ static int decl0(int l, int is_for_loop_init)
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ST_FUNC void decl(int l)
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{
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decl0(l, 0);
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decl0(l, 0, NULL);
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}
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/* ------------------------------------------------------------------------- */
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