X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/76290368d48b584808a120dfbd415be93aef04f6..681dda24bab97297d43a09fb50f95110b790c3ce:/src/symtab.h diff --git a/src/symtab.h b/src/symtab.h index 1a4b7018..db902e75 100644 --- a/src/symtab.h +++ b/src/symtab.h @@ -1,24 +1,22 @@ /* Definitions for symtab.c and callers, part of Bison. - Copyright (C) 1984, 1989, 1992, 2000, 2001, 2002, 2004, 2005, 2006 - Free Software Foundation, Inc. + Copyright (C) 1984, 1989, 1992, 2000-2002, 2004-2007, 2009-2012 Free + Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. - Bison is free software; you can redistribute it and/or modify + This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. - Bison is distributed in the hope that it will be useful, + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with Bison; see the file COPYING. If not, write to - the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. */ + along with this program. If not, see . */ /** * \file symtab.h @@ -87,9 +85,9 @@ struct symbol assoc assoc; int user_token_number; - /* Points to the other in the identifier-symbol pair for an alias. - Special value USER_NUMBER_ALIAS in the identifier half of the - identifier-symbol pair for an alias. */ + /* Points to the other in the symbol-string pair for an alias. + Special value USER_NUMBER_HAS_STRING_ALIAS in the symbol half of the + symbol-string pair for an alias. */ symbol *alias; symbol_class class; bool declared; @@ -98,11 +96,11 @@ struct symbol /** Undefined user number. */ #define USER_NUMBER_UNDEFINED -1 -/* `symbol->user_token_number == USER_NUMBER_ALIAS' means this symbol - *has* (not is) a string literal alias. For instance, `%token foo +/* `symbol->user_token_number == USER_NUMBER_HAS_STRING_ALIAS' means + this symbol has a literal string alias. For instance, `%token foo "foo"' has `"foo"' numbered regularly, and `foo' numbered as - USER_NUMBER_ALIAS. */ -#define USER_NUMBER_ALIAS -9991 + USER_NUMBER_HAS_STRING_ALIAS. */ +#define USER_NUMBER_HAS_STRING_ALIAS -9991 /* Undefined internal token number. */ #define NUMBER_UNDEFINED (-1) @@ -124,8 +122,11 @@ symbol *dummy_symbol_get (location loc); /** Is this a dummy nonterminal? */ bool symbol_is_dummy (const symbol *sym); -/** Declare the new symbol \c sym. Make it an alias of \c symval. */ -void symbol_make_alias (symbol *sym, symbol *symval, location loc); +/** + * Make \c str the literal string alias of \c sym. Copy token number, + * symbol number, and type from \c sym to \c str. + */ +void symbol_make_alias (symbol *sym, symbol *str, location loc); /** Set the \c type_name associated with \c sym. @@ -133,18 +134,18 @@ void symbol_make_alias (symbol *sym, symbol *symval, location loc); void symbol_type_set (symbol *sym, uniqstr type_name, location loc); /** Set the \c destructor associated with \c sym. */ -void symbol_destructor_set (symbol *sym, code_props destructor); +void symbol_destructor_set (symbol *sym, code_props const *destructor); /** Get the computed \c \%destructor for \c sym, which was initialized with \c code_props_none_init if there's no \c \%destructor. */ -code_props symbol_destructor_get (symbol *sym); +code_props const *symbol_destructor_get (symbol const *sym); /** Set the \c printer associated with \c sym. */ -void symbol_printer_set (symbol *sym, code_props printer); +void symbol_printer_set (symbol *sym, code_props const *printer); /** Get the computed \c \%printer for \c sym, which was initialized with \c code_props_none_init if there's no \c \%printer. */ -code_props symbol_printer_get (symbol *sym); +code_props const *symbol_printer_get (symbol const *sym); /* Set the \c precedence associated with \c sym. @@ -182,10 +183,10 @@ extern location startsymbol_location; `-----------------*/ /** A semantic type and its associated \c \%destructor and \c \%printer. - + Access the fields of this struct only through the interface functions in this file. \sa symbol::destructor */ -typedef struct semantic_type { +typedef struct { /** The key, name of the semantic type. */ uniqstr tag; @@ -202,10 +203,12 @@ semantic_type *semantic_type_from_uniqstr (const uniqstr key); semantic_type *semantic_type_get (const char *key); /** Set the \c destructor associated with \c type. */ -void semantic_type_destructor_set (semantic_type *type, code_props destructor); +void semantic_type_destructor_set (semantic_type *type, + code_props const *destructor); /** Set the \c printer associated with \c type. */ -void semantic_type_printer_set (semantic_type *type, code_props printer); +void semantic_type_printer_set (semantic_type *type, + code_props const *printer); /*----------------------------------. | Symbol and semantic type tables. | @@ -234,13 +237,13 @@ void symbols_pack (void); `---------------------------------------*/ /** Set the default \c \%destructor for tagged values. */ -void default_tagged_destructor_set (code_props destructor); +void default_tagged_destructor_set (code_props const *destructor); /** Set the default \c \%destructor for tagless values. */ -void default_tagless_destructor_set (code_props destructor); +void default_tagless_destructor_set (code_props const *destructor); /** Set the default \c \%printer for tagged values. */ -void default_tagged_printer_set (code_props printer); +void default_tagged_printer_set (code_props const *printer); /** Set the default \c \%printer for tagless values. */ -void default_tagless_printer_set (code_props printer); +void default_tagless_printer_set (code_props const *printer); #endif /* !SYMTAB_H_ */