diff options
Diffstat (limited to 'libcpp/include/cpplib.h')
| -rw-r--r-- | libcpp/include/cpplib.h | 71 |
1 files changed, 25 insertions, 46 deletions
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h index b784e0f..e7a933b 100644 --- a/libcpp/include/cpplib.h +++ b/libcpp/include/cpplib.h @@ -742,14 +742,9 @@ struct GTY(()) cpp_macro { } GTY ((desc ("%1.kind == cmk_traditional"))) exp; }; -/* The structure of a node in the hash table. The hash table has - entries for all identifiers: either macros defined by #define - commands (type NT_MACRO), assertions created with #assert - (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros - like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are - flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an - identifier that behaves like an operator such as "xor". - NODE_DIAGNOSTIC is for speed in lex_token: it indicates a +/* Poisoned identifiers are flagged NODE_POISONED. NODE_OPERATOR (C++ + only) indicates an identifier that behaves like an operator such as + "xor". NODE_DIAGNOSTIC is for speed in lex_token: it indicates a diagnostic may be required for this node. Currently this only applies to __VA_ARGS__, poisoned identifiers, and -Wc++-compat warnings about NODE_OPERATOR. */ @@ -757,21 +752,21 @@ struct GTY(()) cpp_macro { /* Hash node flags. */ #define NODE_OPERATOR (1 << 0) /* C++ named operator. */ #define NODE_POISONED (1 << 1) /* Poisoned identifier. */ -#define NODE_BUILTIN (1 << 2) /* Builtin macro. */ -#define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */ -#define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */ -#define NODE_DISABLED (1 << 5) /* A disabled macro. */ -#define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */ -#define NODE_USED (1 << 7) /* Dumped with -dU. */ -#define NODE_CONDITIONAL (1 << 8) /* Conditional macro */ -#define NODE_WARN_OPERATOR (1 << 9) /* Warn about C++ named operator. */ +#define NODE_DIAGNOSTIC (1 << 2) /* Possible diagnostic when lexed. */ +#define NODE_WARN (1 << 3) /* Warn if redefined or undefined. */ +#define NODE_DISABLED (1 << 4) /* A disabled macro. */ +#define NODE_USED (1 << 5) /* Dumped with -dU. */ +#define NODE_CONDITIONAL (1 << 6) /* Conditional macro */ +#define NODE_WARN_OPERATOR (1 << 7) /* Warn about C++ named operator. */ /* Different flavors of hash node. */ enum node_type { - NT_VOID = 0, /* No definition yet. */ - NT_MACRO, /* A macro of some form. */ - NT_ASSERTION /* Predicate for #assert. */ + NT_VOID = 0, /* Maybe an assert? */ + NT_MACRO_ARG, /* A macro arg. */ + NT_USER_MACRO, /* A user macro. */ + NT_BUILTIN_MACRO, /* A builtin macro. */ + NT_MACRO_MASK = NT_USER_MACRO /* Mask for either macro kind. */ }; /* Different flavors of builtin macro. _Pragma is an operator, but we @@ -796,36 +791,19 @@ enum cpp_builtin_type #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident) #define NODE_NAME(NODE) HT_STR (&(NODE)->ident) -/* Specify which field, if any, of the union is used. */ - -enum { - NTV_MACRO, - NTV_ANSWER, - NTV_BUILTIN, - NTV_ARGUMENT, - NTV_NONE -}; - -#define CPP_HASHNODE_VALUE_IDX(HNODE) \ - ((HNODE.flags & NODE_MACRO_ARG) ? NTV_ARGUMENT \ - : HNODE.type == NT_MACRO ? ((HNODE.flags & NODE_BUILTIN) \ - ? NTV_BUILTIN : NTV_MACRO) \ - : HNODE.type == NT_ASSERTION ? NTV_ANSWER \ - : NTV_NONE) - /* The common part of an identifier node shared amongst all 3 C front ends. Also used to store CPP identifiers, which are a superset of identifiers in the grammatical sense. */ union GTY(()) _cpp_hashnode_value { - /* If a macro. */ - cpp_macro * GTY((tag ("NTV_MACRO"))) macro; - /* Answers to an assertion. */ - cpp_macro * GTY ((tag ("NTV_ANSWER"))) answers; + /* Assert (maybe NULL) */ + cpp_macro * GTY((tag ("NT_VOID"))) answers; + /* Macro (never NULL) */ + cpp_macro * GTY((tag ("NT_USER_MACRO"))) macro; /* Code for a builtin macro. */ - enum cpp_builtin_type GTY ((tag ("NTV_BUILTIN"))) builtin; + enum cpp_builtin_type GTY ((tag ("NT_BUILTIN_MACRO"))) builtin; /* Macro argument index. */ - unsigned short GTY ((tag ("NTV_ARGUMENT"))) arg_index; + unsigned short GTY ((tag ("NT_MACRO_ARG"))) arg_index; }; struct GTY(()) cpp_hashnode { @@ -838,7 +816,7 @@ struct GTY(()) cpp_hashnode { ENUM_BITFIELD(node_type) type : 6; /* CPP node type. */ unsigned int flags : 10; /* CPP flags. */ - union _cpp_hashnode_value GTY ((desc ("CPP_HASHNODE_VALUE_IDX (%1)"))) value; + union _cpp_hashnode_value GTY ((desc ("%1.type"))) value; }; /* A class for iterating through the source locations within a @@ -961,15 +939,16 @@ extern const cpp_token *cpp_get_token_with_location (cpp_reader *, source_location *); inline bool cpp_user_macro_p (const cpp_hashnode *node) { - return node->type == NT_MACRO && !(node->flags & NODE_BUILTIN); + return node->type == NT_USER_MACRO; + } inline bool cpp_builtin_macro_p (const cpp_hashnode *node) { - return node->flags & NODE_BUILTIN; + return node->type == NT_BUILTIN_MACRO; } inline bool cpp_macro_p (const cpp_hashnode *node) { - return node->type == NT_MACRO; + return node->type & NT_MACRO_MASK; } /* Returns true if NODE is a function-like user macro. */ inline bool cpp_fun_like_macro_p (cpp_hashnode *node) |