+}
+
+storage_func_specs: { $$ = NULL; } | declspec_simple storage_func_specs {
+ ALLOC_STRUCT($$, struct cdecl_declspec,
+ .type = $1,
+ .next = $2);
+}
+
+type_qual_spec: typespec_noid | qualifier
+
+type_qual_specs: { $$ = NULL; } | type_qual_spec type_qual_specs {
+ $$ = $1;
+ $$->next = $2;
+}
+
+/*
+ * The "qualifiers" nonterminal needs to be used here to avoid shift/reduce
+ * conflicts with pointer declarators. So we end up needing to stitch
+ * together three different specifiers lists.
+ */
+post_specs: qualifiers typespec type_qual_specs {
+ $$ = $2;
+ $$->next = $1;
+ for (struct cdecl_declspec *s = $$; s; s = s->next) {
+ if (!s->next) {
+ s->next = $3;
+ break;
+ }
+ }
+}
+
+english_declaration: storage_func_specs english_declarator post_specs {
+ ALLOC_STRUCT($$, struct cdecl,
+ .specifiers = $3,
+ .declarators = $2);
+
+ for (struct cdecl_declspec *s = $$->specifiers; s; s = s->next) {
+ if (!s->next) {
+ s->next = $1;
+ break;
+ }
+ }
+}
+
+english_declarator: {
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_NULL);
+} | english_declarator qualifiers T_POINTER T_TO {
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_POINTER,
+ .child = $1,
+ .u.pointer.qualifiers = $2);
+} | english_declarator english_array {
+ $$ = $2;
+ $$->child = $1;
+} | english_declarator english_function {
+ $$ = $2;
+ $$->child = $1;
+}
+
+english_function: T_FUNCTION T_RETURNING {
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_FUNCTION,
+ .u.function.parameters = NULL);
+} | T_FUNCTION T_LPAREN english_parameter_list T_RPAREN T_RETURNING {
+ $$ = $3;
+}
+
+english_parameter_list: english_parameters varargs {
+ struct cdecl *p, *c, *n;
+
+ /* Parameters were accumulated in reverse order. */
+ for (p = NULL, c = $1; c; p = c, c = n) {
+ n = c->next;
+ c->next = p;
+ }
+
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_FUNCTION,
+ .u.function.parameters = p,
+ .u.function.variadic = $2);
+}
+
+english_parameters: english_parameters T_COMMA english_parameter {
+ $$ = $3;
+ $$->next = $1;
+} | english_parameter
+
+typedef_name_qual: T_IDENT qualifiers {
+ ALLOC_STRUCT($$, struct cdecl_declspec,
+ .type = CDECL_TYPE_IDENT,
+ .ident = $1,
+ .next = $2);
+}
+
+null_decl: {
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_NULL);
+}
+
+/*
+ * There is a small shift/reduce conflict here. An unadorned identifier
+ * as the first thing in the parameter might be a typedef name deep in the
+ * first english_declaration (thus empty storage_func_specs and empty
+ * english_declarator need to be reduced) or it might be the identifier
+ * before the "as" (thus the identifier should be shifted).
+ *
+ * The typedef name conflict is the only issue, so treating it as a special
+ * case makes the shift harmless.
+ */
+english_parameter: english_declaration | typedef_name_qual null_decl {
+ ALLOC_STRUCT($$, struct cdecl,
+ .specifiers = $1,
+ .declarators = $2);
+} | T_IDENT T_AS english_declaration {
+ $$ = $3;
+ for (struct cdecl_declarator *d = $$->declarators; d; d = d->child) {
+ if (d->type == CDECL_DECL_NULL) {
+ d->type = CDECL_DECL_IDENT;
+ d->u.ident = $1;
+ }
+ }
+}
+
+english_array: T_VLA T_ARRAY english_vla T_OF {
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_ARRAY,
+ .u.array.vla = $3);
+} | T_ARRAY T_UINT T_OF {
+ if ($2 == 0)
+ FAIL("array length must be positive");
+
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_ARRAY,
+ .u.array.length = $2);
+} | T_ARRAY T_OF {
+ ALLOC_STRUCT($$, struct cdecl_declarator,
+ .type = CDECL_DECL_ARRAY,
+ .u.array.length = 0);
+}
+
+english_vla: T_IDENT | {
+ ALLOC($$, sizeof "");
+ strcpy($$, "");
+}