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attr.h (1904B)

      1 #ifndef KIT_PARSE_ATTR_H
      2 #define KIT_PARSE_ATTR_H
      3 
      4 #include "c_support.h"
      5 
      6 /* GNU __attribute__((...)) AST node, shared between the parser (producer)
      7  * and the declaration-attribute consumers. The parser builds
      8  * the list and chains it onto its carriers (DeclSpecs.attrs,
      9  * TagEntry.attrs, SymEntry.attrs); consumers walk a `const Attr*` head
     10  * and decode according to `kind`. See doc/ATTRIBUTE.md. */
     11 
     12 typedef enum AttrKind {
     13   ATTR_UNKNOWN = 0,
     14   ATTR_PACKED,
     15   ATTR_ALIGNED,
     16   ATTR_SECTION,
     17   ATTR_USED,
     18   ATTR_NORETURN,
     19   ATTR_ALIAS,
     20   ATTR_WEAK,
     21   ATTR_VISIBILITY,
     22   ATTR_ALWAYS_INLINE,
     23   ATTR_NOINLINE,
     24   ATTR_UNUSED,
     25   ATTR_DEPRECATED,
     26   ATTR_WARN_UNUSED_RESULT,
     27   ATTR_FORMAT,
     28   ATTR_NONNULL,
     29   ATTR_RETURNS_NONNULL,
     30   ATTR_PURE,
     31   ATTR_CONST,
     32   ATTR_MALLOC,
     33   ATTR_NOTHROW,
     34   ATTR_LEAF,
     35   ATTR_COLD,
     36   ATTR_HOT,
     37   ATTR_CONSTRUCTOR,
     38   ATTR_DESTRUCTOR,
     39   ATTR_CLEANUP,
     40   ATTR_MODE,
     41   ATTR_VECTOR_SIZE,
     42   ATTR_TRANSPARENT_UNION,
     43   ATTR_GNU_INLINE,
     44   ATTR_FALLTHROUGH,
     45   ATTR_SENTINEL,
     46   ATTR_NO_INSTRUMENT_FUNCTION,
     47   ATTR_NO_SANITIZE,
     48   /* Wasm-target import descriptors. Each carries a single string argument
     49    * (AS_STRING) stored in `v.sym`. Together they request the wasm backend
     50    * emit a `(import "<module>" "<name>" ...)` entry for the declared
     51    * function. */
     52   ATTR_IMPORT_MODULE,
     53   ATTR_IMPORT_NAME,
     54 } AttrKind;
     55 
     56 typedef enum AttrArgShape {
     57   AS_NONE,
     58   AS_OPTIONAL,
     59   AS_INT,
     60   AS_INT_OPT,
     61   AS_STRING,
     62   AS_IDENT,
     63   AS_FORMAT,
     64   AS_OPAQUE,
     65 } AttrArgShape;
     66 
     67 typedef struct Attr Attr;
     68 struct Attr {
     69   u16 kind; /* AttrKind */
     70   u16 nargs;
     71   SrcLoc loc;
     72   Sym name; /* canonical (post-underscore-strip) spelling */
     73   union {
     74     i64 i;   /* aligned(N), vector_size(N), constructor(prio) */
     75     Sym sym; /* section("..."), alias("..."), visibility("...") */
     76     struct {
     77       u16 fmt_idx;
     78       u16 first;
     79     } format; /* format(printf, m, n) */
     80   } v;
     81   Attr* next;
     82 };
     83 
     84 #endif