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Diffstat (limited to 'usr.bin/yacc/tests/grammar.y')
| -rw-r--r-- | usr.bin/yacc/tests/grammar.y | 1183 |
1 files changed, 0 insertions, 1183 deletions
diff --git a/usr.bin/yacc/tests/grammar.y b/usr.bin/yacc/tests/grammar.y deleted file mode 100644 index a2f1883..0000000 --- a/usr.bin/yacc/tests/grammar.y +++ /dev/null @@ -1,1183 +0,0 @@ -/* $Id: grammar.y,v 1.5 2012/01/15 20:00:59 tom Exp $ - * - * yacc grammar for C function prototype generator - * This was derived from the grammar in Appendix A of - * "The C Programming Language" by Kernighan and Ritchie. - */ -%expect 1 -%{ -#ifdef YYBISON -#include <stdlib.h> -#define YYSTYPE_IS_DECLARED -#define yyerror yaccError -#endif - -#if defined(YYBISON) || !defined(YYBYACC) -static void yyerror(const char *s); -#endif -%} - -%token <text> '(' '*' '&' - /* identifiers that are not reserved words */ - T_IDENTIFIER T_TYPEDEF_NAME T_DEFINE_NAME - - /* storage class */ - T_AUTO T_EXTERN T_REGISTER T_STATIC T_TYPEDEF - /* This keyword included for compatibility with C++. */ - T_INLINE - /* This keyword included for compatibility with GCC */ - T_EXTENSION - - /* type specifiers */ - T_CHAR T_DOUBLE T_FLOAT T_INT T_VOID - T_LONG T_SHORT T_SIGNED T_UNSIGNED - T_ENUM T_STRUCT T_UNION - /* C9X new types */ - T_Bool T_Complex T_Imaginary - - /* type qualifiers */ - T_TYPE_QUALIFIER - - /* paired square brackets and everything between them: [ ... ] */ - T_BRACKETS - -%token - /* left brace */ - T_LBRACE - /* all input to the matching right brace */ - T_MATCHRBRACE - - /* three periods */ - T_ELLIPSIS - - /* constant expression or paired braces following an equal sign */ - T_INITIALIZER - - /* string literal */ - T_STRING_LITERAL - - /* asm */ - T_ASM - /* ( "string literal" ) following asm keyword */ - T_ASMARG - - /* va_dcl from <varargs.h> */ - T_VA_DCL - -%type <decl_spec> decl_specifiers decl_specifier -%type <decl_spec> storage_class type_specifier type_qualifier -%type <decl_spec> struct_or_union_specifier enum_specifier -%type <decl_list> init_declarator_list -%type <declarator> init_declarator declarator direct_declarator -%type <declarator> abs_declarator direct_abs_declarator -%type <param_list> parameter_type_list parameter_list -%type <parameter> parameter_declaration -%type <param_list> opt_identifier_list identifier_list -%type <text> struct_or_union pointer opt_type_qualifiers type_qualifier_list - any_id identifier_or_ref -%type <text> enumeration - -%{ -#include <stdio.h> -#include <ctype.h> -#include <string.h> - -#define OPT_LINTLIBRARY 1 - -#ifndef TRUE -#define TRUE (1) -#endif - -#ifndef FALSE -#define FALSE (0) -#endif - -/* #include "cproto.h" */ -#define MAX_TEXT_SIZE 1024 - -/* Prototype styles */ -#if OPT_LINTLIBRARY -#define PROTO_ANSI_LLIB -2 /* form ANSI lint-library source */ -#define PROTO_LINTLIBRARY -1 /* form lint-library source */ -#endif -#define PROTO_NONE 0 /* do not output any prototypes */ -#define PROTO_TRADITIONAL 1 /* comment out parameters */ -#define PROTO_ABSTRACT 2 /* comment out parameter names */ -#define PROTO_ANSI 3 /* ANSI C prototype */ - -typedef int PrototypeStyle; - -typedef char boolean; - -extern boolean types_out; -extern PrototypeStyle proto_style; - -#define ansiLintLibrary() (proto_style == PROTO_ANSI_LLIB) -#define knrLintLibrary() (proto_style == PROTO_LINTLIBRARY) -#define lintLibrary() (knrLintLibrary() || ansiLintLibrary()) - -#if OPT_LINTLIBRARY -#define FUNC_UNKNOWN -1 /* unspecified */ -#else -#define FUNC_UNKNOWN 0 /* unspecified (same as FUNC_NONE) */ -#endif -#define FUNC_NONE 0 /* not a function definition */ -#define FUNC_TRADITIONAL 1 /* traditional style */ -#define FUNC_ANSI 2 /* ANSI style */ -#define FUNC_BOTH 3 /* both styles */ - -typedef int FuncDefStyle; - -/* Source file text */ -typedef struct text { - char text[MAX_TEXT_SIZE]; /* source text */ - long begin; /* offset in temporary file */ -} Text; - -/* Declaration specifier flags */ -#define DS_NONE 0 /* default */ -#define DS_EXTERN 1 /* contains "extern" specifier */ -#define DS_STATIC 2 /* contains "static" specifier */ -#define DS_CHAR 4 /* contains "char" type specifier */ -#define DS_SHORT 8 /* contains "short" type specifier */ -#define DS_FLOAT 16 /* contains "float" type specifier */ -#define DS_INLINE 32 /* contains "inline" specifier */ -#define DS_JUNK 64 /* we're not interested in this declaration */ - -/* This structure stores information about a declaration specifier. */ -typedef struct decl_spec { - unsigned short flags; /* flags defined above */ - char *text; /* source text */ - long begin; /* offset in temporary file */ -} DeclSpec; - -/* This is a list of function parameters. */ -typedef struct _ParameterList { - struct parameter *first; /* pointer to first parameter in list */ - struct parameter *last; /* pointer to last parameter in list */ - long begin_comment; /* begin offset of comment */ - long end_comment; /* end offset of comment */ - char *comment; /* comment at start of parameter list */ -} ParameterList; - -/* This structure stores information about a declarator. */ -typedef struct _Declarator { - char *name; /* name of variable or function */ - char *text; /* source text */ - long begin; /* offset in temporary file */ - long begin_comment; /* begin offset of comment */ - long end_comment; /* end offset of comment */ - FuncDefStyle func_def; /* style of function definition */ - ParameterList params; /* function parameters */ - boolean pointer; /* TRUE if it declares a pointer */ - struct _Declarator *head; /* head function declarator */ - struct _Declarator *func_stack; /* stack of function declarators */ - struct _Declarator *next; /* next declarator in list */ -} Declarator; - -/* This structure stores information about a function parameter. */ -typedef struct parameter { - struct parameter *next; /* next parameter in list */ - DeclSpec decl_spec; - Declarator *declarator; - char *comment; /* comment following the parameter */ -} Parameter; - -/* This is a list of declarators. */ -typedef struct declarator_list { - Declarator *first; /* pointer to first declarator in list */ - Declarator *last; /* pointer to last declarator in list */ -} DeclaratorList; - -/* #include "symbol.h" */ -typedef struct symbol { - struct symbol *next; /* next symbol in list */ - char *name; /* name of symbol */ - char *value; /* value of symbol (for defines) */ - short flags; /* symbol attributes */ -} Symbol; - -/* parser stack entry type */ -typedef union { - Text text; - DeclSpec decl_spec; - Parameter *parameter; - ParameterList param_list; - Declarator *declarator; - DeclaratorList decl_list; -} YYSTYPE; - -/* The hash table length should be a prime number. */ -#define SYM_MAX_HASH 251 - -typedef struct symbol_table { - Symbol *bucket[SYM_MAX_HASH]; /* hash buckets */ -} SymbolTable; - -extern SymbolTable *new_symbol_table /* Create symbol table */ - (void); -extern void free_symbol_table /* Destroy symbol table */ - (SymbolTable *s); -extern Symbol *find_symbol /* Lookup symbol name */ - (SymbolTable *s, const char *n); -extern Symbol *new_symbol /* Define new symbol */ - (SymbolTable *s, const char *n, const char *v, int f); - -/* #include "semantic.h" */ -extern void new_decl_spec (DeclSpec *, const char *, long, int); -extern void free_decl_spec (DeclSpec *); -extern void join_decl_specs (DeclSpec *, DeclSpec *, DeclSpec *); -extern void check_untagged (DeclSpec *); -extern Declarator *new_declarator (const char *, const char *, long); -extern void free_declarator (Declarator *); -extern void new_decl_list (DeclaratorList *, Declarator *); -extern void free_decl_list (DeclaratorList *); -extern void add_decl_list (DeclaratorList *, DeclaratorList *, Declarator *); -extern Parameter *new_parameter (DeclSpec *, Declarator *); -extern void free_parameter (Parameter *); -extern void new_param_list (ParameterList *, Parameter *); -extern void free_param_list (ParameterList *); -extern void add_param_list (ParameterList *, ParameterList *, Parameter *); -extern void new_ident_list (ParameterList *); -extern void add_ident_list (ParameterList *, ParameterList *, const char *); -extern void set_param_types (ParameterList *, DeclSpec *, DeclaratorList *); -extern void gen_declarations (DeclSpec *, DeclaratorList *); -extern void gen_prototype (DeclSpec *, Declarator *); -extern void gen_func_declarator (Declarator *); -extern void gen_func_definition (DeclSpec *, Declarator *); - -extern void init_parser (void); -extern void process_file (FILE *infile, char *name); -extern char *cur_text (void); -extern char *cur_file_name (void); -extern char *implied_typedef (void); -extern void include_file (char *name, int convert); -extern char *supply_parm (int count); -extern char *xstrdup (const char *); -extern int already_declared (char *name); -extern int is_actual_func (Declarator *d); -extern int lint_ellipsis (Parameter *p); -extern int want_typedef (void); -extern void begin_tracking (void); -extern void begin_typedef (void); -extern void copy_typedef (char *s); -extern void ellipsis_varargs (Declarator *d); -extern void end_typedef (void); -extern void flush_varargs (void); -extern void fmt_library (int code); -extern void imply_typedef (const char *s); -extern void indent (FILE *outf); -extern void put_blankline (FILE *outf); -extern void put_body (FILE *outf, DeclSpec *decl_spec, Declarator *declarator); -extern void put_char (FILE *outf, int c); -extern void put_error (void); -extern void put_newline (FILE *outf); -extern void put_padded (FILE *outf, const char *s); -extern void put_string (FILE *outf, const char *s); -extern void track_in (void); - -extern boolean file_comments; -extern FuncDefStyle func_style; -extern char base_file[]; - -extern int yylex (void); - -/* declaration specifier attributes for the typedef statement currently being - * scanned - */ -static int cur_decl_spec_flags; - -/* pointer to parameter list for the current function definition */ -static ParameterList *func_params; - -/* A parser semantic action sets this pointer to the current declarator in - * a function parameter declaration in order to catch any comments following - * the parameter declaration on the same line. If the lexer scans a comment - * and <cur_declarator> is not NULL, then the comment is attached to the - * declarator. To ignore subsequent comments, the lexer sets this to NULL - * after scanning a comment or end of line. - */ -static Declarator *cur_declarator; - -/* temporary string buffer */ -static char buf[MAX_TEXT_SIZE]; - -/* table of typedef names */ -static SymbolTable *typedef_names; - -/* table of define names */ -static SymbolTable *define_names; - -/* table of type qualifiers */ -static SymbolTable *type_qualifiers; - -/* information about the current input file */ -typedef struct { - char *base_name; /* base input file name */ - char *file_name; /* current file name */ - FILE *file; /* input file */ - unsigned line_num; /* current line number in input file */ - FILE *tmp_file; /* temporary file */ - long begin_comment; /* tmp file offset after last written ) or ; */ - long end_comment; /* tmp file offset after last comment */ - boolean convert; /* if TRUE, convert function definitions */ - boolean changed; /* TRUE if conversion done in this file */ -} IncludeStack; - -static IncludeStack *cur_file; /* current input file */ - -/* #include "yyerror.c" */ - -static int haveAnsiParam (void); - - -/* Flags to enable us to find if a procedure returns a value. - */ -static int return_val; /* nonzero on BRACES iff return-expression found */ - -static const char * -dft_decl_spec (void) -{ - return (lintLibrary() && !return_val) ? "void" : "int"; -} - -static int -haveAnsiParam (void) -{ - Parameter *p; - if (func_params != 0) { - for (p = func_params->first; p != 0; p = p->next) { - if (p->declarator->func_def == FUNC_ANSI) { - return TRUE; - } - } - } - return FALSE; -} -%} -%% - -program - : /* empty */ - | translation_unit - ; - -translation_unit - : external_declaration - | translation_unit external_declaration - ; - -external_declaration - : declaration - | function_definition - | ';' - | linkage_specification - | T_ASM T_ASMARG ';' - | error T_MATCHRBRACE - { - yyerrok; - } - | error ';' - { - yyerrok; - } - ; - -braces - : T_LBRACE T_MATCHRBRACE - ; - -linkage_specification - : T_EXTERN T_STRING_LITERAL braces - { - /* Provide an empty action here so bison will not complain about - * incompatible types in the default action it normally would - * have generated. - */ - } - | T_EXTERN T_STRING_LITERAL declaration - { - /* empty */ - } - ; - -declaration - : decl_specifiers ';' - { -#if OPT_LINTLIBRARY - if (types_out && want_typedef()) { - gen_declarations(&$1, (DeclaratorList *)0); - flush_varargs(); - } -#endif - free_decl_spec(&$1); - end_typedef(); - } - | decl_specifiers init_declarator_list ';' - { - if (func_params != NULL) { - set_param_types(func_params, &$1, &$2); - } else { - gen_declarations(&$1, &$2); -#if OPT_LINTLIBRARY - flush_varargs(); -#endif - free_decl_list(&$2); - } - free_decl_spec(&$1); - end_typedef(); - } - | any_typedef decl_specifiers - { - cur_decl_spec_flags = $2.flags; - free_decl_spec(&$2); - } - opt_declarator_list ';' - { - end_typedef(); - } - ; - -any_typedef - : T_EXTENSION T_TYPEDEF - { - begin_typedef(); - } - | T_TYPEDEF - { - begin_typedef(); - } - ; - -opt_declarator_list - : /* empty */ - | declarator_list - ; - -declarator_list - : declarator - { - int flags = cur_decl_spec_flags; - - /* If the typedef is a pointer type, then reset the short type - * flags so it does not get promoted. - */ - if (strcmp($1->text, $1->name) != 0) - flags &= ~(DS_CHAR | DS_SHORT | DS_FLOAT); - new_symbol(typedef_names, $1->name, NULL, flags); - free_declarator($1); - } - | declarator_list ',' declarator - { - int flags = cur_decl_spec_flags; - - if (strcmp($3->text, $3->name) != 0) - flags &= ~(DS_CHAR | DS_SHORT | DS_FLOAT); - new_symbol(typedef_names, $3->name, NULL, flags); - free_declarator($3); - } - ; - -function_definition - : decl_specifiers declarator - { - check_untagged(&$1); - if ($2->func_def == FUNC_NONE) { - yyerror("syntax error"); - YYERROR; - } - func_params = &($2->head->params); - func_params->begin_comment = cur_file->begin_comment; - func_params->end_comment = cur_file->end_comment; - } - opt_declaration_list T_LBRACE - { - /* If we're converting to K&R and we've got a nominally K&R - * function which has a parameter which is ANSI (i.e., a prototyped - * function pointer), then we must override the deciphered value of - * 'func_def' so that the parameter will be converted. - */ - if (func_style == FUNC_TRADITIONAL - && haveAnsiParam() - && $2->head->func_def == func_style) { - $2->head->func_def = FUNC_BOTH; - } - - func_params = NULL; - - if (cur_file->convert) - gen_func_definition(&$1, $2); - gen_prototype(&$1, $2); -#if OPT_LINTLIBRARY - flush_varargs(); -#endif - free_decl_spec(&$1); - free_declarator($2); - } - T_MATCHRBRACE - | declarator - { - if ($1->func_def == FUNC_NONE) { - yyerror("syntax error"); - YYERROR; - } - func_params = &($1->head->params); - func_params->begin_comment = cur_file->begin_comment; - func_params->end_comment = cur_file->end_comment; - } - opt_declaration_list T_LBRACE T_MATCHRBRACE - { - DeclSpec decl_spec; - - func_params = NULL; - - new_decl_spec(&decl_spec, dft_decl_spec(), $1->begin, DS_NONE); - if (cur_file->convert) - gen_func_definition(&decl_spec, $1); - gen_prototype(&decl_spec, $1); -#if OPT_LINTLIBRARY - flush_varargs(); -#endif - free_decl_spec(&decl_spec); - free_declarator($1); - } - ; - -opt_declaration_list - : /* empty */ - | T_VA_DCL - | declaration_list - ; - -declaration_list - : declaration - | declaration_list declaration - ; - -decl_specifiers - : decl_specifier - | decl_specifiers decl_specifier - { - join_decl_specs(&$$, &$1, &$2); - free($1.text); - free($2.text); - } - ; - -decl_specifier - : storage_class - | type_specifier - | type_qualifier - ; - -storage_class - : T_AUTO - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_EXTERN - { - new_decl_spec(&$$, $1.text, $1.begin, DS_EXTERN); - } - | T_REGISTER - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_STATIC - { - new_decl_spec(&$$, $1.text, $1.begin, DS_STATIC); - } - | T_INLINE - { - new_decl_spec(&$$, $1.text, $1.begin, DS_INLINE); - } - | T_EXTENSION - { - new_decl_spec(&$$, $1.text, $1.begin, DS_JUNK); - } - ; - -type_specifier - : T_CHAR - { - new_decl_spec(&$$, $1.text, $1.begin, DS_CHAR); - } - | T_DOUBLE - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_FLOAT - { - new_decl_spec(&$$, $1.text, $1.begin, DS_FLOAT); - } - | T_INT - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_LONG - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_SHORT - { - new_decl_spec(&$$, $1.text, $1.begin, DS_SHORT); - } - | T_SIGNED - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_UNSIGNED - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_VOID - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_Bool - { - new_decl_spec(&$$, $1.text, $1.begin, DS_CHAR); - } - | T_Complex - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_Imaginary - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_TYPEDEF_NAME - { - Symbol *s; - s = find_symbol(typedef_names, $1.text); - if (s != NULL) - new_decl_spec(&$$, $1.text, $1.begin, s->flags); - } - | struct_or_union_specifier - | enum_specifier - ; - -type_qualifier - : T_TYPE_QUALIFIER - { - new_decl_spec(&$$, $1.text, $1.begin, DS_NONE); - } - | T_DEFINE_NAME - { - /* This rule allows the <pointer> nonterminal to scan #define - * names as if they were type modifiers. - */ - Symbol *s; - s = find_symbol(define_names, $1.text); - if (s != NULL) - new_decl_spec(&$$, $1.text, $1.begin, s->flags); - } - ; - -struct_or_union_specifier - : struct_or_union any_id braces - { - char *s; - if ((s = implied_typedef()) == 0) - (void)sprintf(s = buf, "%s %s", $1.text, $2.text); - new_decl_spec(&$$, s, $1.begin, DS_NONE); - } - | struct_or_union braces - { - char *s; - if ((s = implied_typedef()) == 0) - (void)sprintf(s = buf, "%s {}", $1.text); - new_decl_spec(&$$, s, $1.begin, DS_NONE); - } - | struct_or_union any_id - { - (void)sprintf(buf, "%s %s", $1.text, $2.text); - new_decl_spec(&$$, buf, $1.begin, DS_NONE); - } - ; - -struct_or_union - : T_STRUCT - { - imply_typedef($$.text); - } - | T_UNION - { - imply_typedef($$.text); - } - ; - -init_declarator_list - : init_declarator - { - new_decl_list(&$$, $1); - } - | init_declarator_list ',' init_declarator - { - add_decl_list(&$$, &$1, $3); - } - ; - -init_declarator - : declarator - { - if ($1->func_def != FUNC_NONE && func_params == NULL && - func_style == FUNC_TRADITIONAL && cur_file->convert) { - gen_func_declarator($1); - fputs(cur_text(), cur_file->tmp_file); - } - cur_declarator = $$; - } - | declarator '=' - { - if ($1->func_def != FUNC_NONE && func_params == NULL && - func_style == FUNC_TRADITIONAL && cur_file->convert) { - gen_func_declarator($1); - fputs(" =", cur_file->tmp_file); - } - } - T_INITIALIZER - ; - -enum_specifier - : enumeration any_id braces - { - char *s; - if ((s = implied_typedef()) == 0) - (void)sprintf(s = buf, "enum %s", $2.text); - new_decl_spec(&$$, s, $1.begin, DS_NONE); - } - | enumeration braces - { - char *s; - if ((s = implied_typedef()) == 0) - (void)sprintf(s = buf, "%s {}", $1.text); - new_decl_spec(&$$, s, $1.begin, DS_NONE); - } - | enumeration any_id - { - (void)sprintf(buf, "enum %s", $2.text); - new_decl_spec(&$$, buf, $1.begin, DS_NONE); - } - ; - -enumeration - : T_ENUM - { - imply_typedef("enum"); - $$ = $1; - } - ; - -any_id - : T_IDENTIFIER - | T_TYPEDEF_NAME - ; - -declarator - : pointer direct_declarator - { - $$ = $2; - (void)sprintf(buf, "%s%s", $1.text, $$->text); - free($$->text); - $$->text = xstrdup(buf); - $$->begin = $1.begin; - $$->pointer = TRUE; - } - | direct_declarator - ; - -direct_declarator - : identifier_or_ref - { - $$ = new_declarator($1.text, $1.text, $1.begin); - } - | '(' declarator ')' - { - $$ = $2; - (void)sprintf(buf, "(%s)", $$->text); - free($$->text); - $$->text = xstrdup(buf); - $$->begin = $1.begin; - } - | direct_declarator T_BRACKETS - { - $$ = $1; - (void)sprintf(buf, "%s%s", $$->text, $2.text); - free($$->text); - $$->text = xstrdup(buf); - } - | direct_declarator '(' parameter_type_list ')' - { - $$ = new_declarator("%s()", $1->name, $1->begin); - $$->params = $3; - $$->func_stack = $1; - $$->head = ($1->func_stack == NULL) ? $$ : $1->head; - $$->func_def = FUNC_ANSI; - } - | direct_declarator '(' opt_identifier_list ')' - { - $$ = new_declarator("%s()", $1->name, $1->begin); - $$->params = $3; - $$->func_stack = $1; - $$->head = ($1->func_stack == NULL) ? $$ : $1->head; - $$->func_def = FUNC_TRADITIONAL; - } - ; - -pointer - : '*' opt_type_qualifiers - { - (void)sprintf($$.text, "*%s", $2.text); - $$.begin = $1.begin; - } - | '*' opt_type_qualifiers pointer - { - (void)sprintf($$.text, "*%s%s", $2.text, $3.text); - $$.begin = $1.begin; - } - ; - -opt_type_qualifiers - : /* empty */ - { - strcpy($$.text, ""); - $$.begin = 0L; - } - | type_qualifier_list - ; - -type_qualifier_list - : type_qualifier - { - (void)sprintf($$.text, "%s ", $1.text); - $$.begin = $1.begin; - free($1.text); - } - | type_qualifier_list type_qualifier - { - (void)sprintf($$.text, "%s%s ", $1.text, $2.text); - $$.begin = $1.begin; - free($2.text); - } - ; - -parameter_type_list - : parameter_list - | parameter_list ',' T_ELLIPSIS - { - add_ident_list(&$$, &$1, "..."); - } - ; - -parameter_list - : parameter_declaration - { - new_param_list(&$$, $1); - } - | parameter_list ',' parameter_declaration - { - add_param_list(&$$, &$1, $3); - } - ; - -parameter_declaration - : decl_specifiers declarator - { - check_untagged(&$1); - $$ = new_parameter(&$1, $2); - } - | decl_specifiers abs_declarator - { - check_untagged(&$1); - $$ = new_parameter(&$1, $2); - } - | decl_specifiers - { - check_untagged(&$1); - $$ = new_parameter(&$1, (Declarator *)0); - } - ; - -opt_identifier_list - : /* empty */ - { - new_ident_list(&$$); - } - | identifier_list - ; - -identifier_list - : any_id - { - new_ident_list(&$$); - add_ident_list(&$$, &$$, $1.text); - } - | identifier_list ',' any_id - { - add_ident_list(&$$, &$1, $3.text); - } - ; - -identifier_or_ref - : any_id - { - $$ = $1; - } - | '&' any_id - { -#if OPT_LINTLIBRARY - if (lintLibrary()) { /* Lint doesn't grok C++ ref variables */ - $$ = $2; - } else -#endif - (void)sprintf($$.text, "&%s", $2.text); - $$.begin = $1.begin; - } - ; - -abs_declarator - : pointer - { - $$ = new_declarator($1.text, "", $1.begin); - } - | pointer direct_abs_declarator - { - $$ = $2; - (void)sprintf(buf, "%s%s", $1.text, $$->text); - free($$->text); - $$->text = xstrdup(buf); - $$->begin = $1.begin; - } - | direct_abs_declarator - ; - -direct_abs_declarator - : '(' abs_declarator ')' - { - $$ = $2; - (void)sprintf(buf, "(%s)", $$->text); - free($$->text); - $$->text = xstrdup(buf); - $$->begin = $1.begin; - } - | direct_abs_declarator T_BRACKETS - { - $$ = $1; - (void)sprintf(buf, "%s%s", $$->text, $2.text); - free($$->text); - $$->text = xstrdup(buf); - } - | T_BRACKETS - { - $$ = new_declarator($1.text, "", $1.begin); - } - | direct_abs_declarator '(' parameter_type_list ')' - { - $$ = new_declarator("%s()", "", $1->begin); - $$->params = $3; - $$->func_stack = $1; - $$->head = ($1->func_stack == NULL) ? $$ : $1->head; - $$->func_def = FUNC_ANSI; - } - | direct_abs_declarator '(' ')' - { - $$ = new_declarator("%s()", "", $1->begin); - $$->func_stack = $1; - $$->head = ($1->func_stack == NULL) ? $$ : $1->head; - $$->func_def = FUNC_ANSI; - } - | '(' parameter_type_list ')' - { - Declarator *d; - - d = new_declarator("", "", $1.begin); - $$ = new_declarator("%s()", "", $1.begin); - $$->params = $2; - $$->func_stack = d; - $$->head = $$; - $$->func_def = FUNC_ANSI; - } - | '(' ')' - { - Declarator *d; - - d = new_declarator("", "", $1.begin); - $$ = new_declarator("%s()", "", $1.begin); - $$->func_stack = d; - $$->head = $$; - $$->func_def = FUNC_ANSI; - } - ; - -%% - -/* lex.yy.c */ -#define BEGIN yy_start = 1 + 2 * - -#define CPP1 1 -#define INIT1 2 -#define INIT2 3 -#define CURLY 4 -#define LEXYACC 5 -#define ASM 6 -#define CPP_INLINE 7 - -extern char *yytext; -extern FILE *yyin, *yyout; - -static int curly; /* number of curly brace nesting levels */ -static int ly_count; /* number of occurrences of %% */ -static int inc_depth; /* include nesting level */ -static SymbolTable *included_files; /* files already included */ -static int yy_start = 0; /* start state number */ - -#define grammar_error(s) yaccError(s) - -static void -yaccError (const char *msg) -{ - func_params = NULL; - put_error(); /* tell what line we're on, and what file */ - fprintf(stderr, "%s at token '%s'\n", msg, yytext); -} - -/* Initialize the table of type qualifier keywords recognized by the lexical - * analyzer. - */ -void -init_parser (void) -{ - static const char *keywords[] = { - "const", - "restrict", - "volatile", - "interrupt", -#ifdef vms - "noshare", - "readonly", -#endif -#if defined(MSDOS) || defined(OS2) - "__cdecl", - "__export", - "__far", - "__fastcall", - "__fortran", - "__huge", - "__inline", - "__interrupt", - "__loadds", - "__near", - "__pascal", - "__saveregs", - "__segment", - "__stdcall", - "__syscall", - "_cdecl", - "_cs", - "_ds", - "_es", - "_export", - "_far", - "_fastcall", - "_fortran", - "_huge", - "_interrupt", - "_loadds", - "_near", - "_pascal", - "_saveregs", - "_seg", - "_segment", - "_ss", - "cdecl", - "far", - "huge", - "near", - "pascal", -#ifdef OS2 - "__far16", -#endif -#endif -#ifdef __GNUC__ - /* gcc aliases */ - "__builtin_va_arg", - "__builtin_va_list", - "__const", - "__const__", - "__inline", - "__inline__", - "__restrict", - "__restrict__", - "__volatile", - "__volatile__", -#endif - }; - unsigned i; - - /* Initialize type qualifier table. */ - type_qualifiers = new_symbol_table(); - for (i = 0; i < sizeof(keywords)/sizeof(keywords[0]); ++i) { - new_symbol(type_qualifiers, keywords[i], NULL, DS_NONE); - } -} - -/* Process the C source file. Write function prototypes to the standard - * output. Convert function definitions and write the converted source - * code to a temporary file. - */ -void -process_file (FILE *infile, char *name) -{ - char *s; - - if (strlen(name) > 2) { - s = name + strlen(name) - 2; - if (*s == '.') { - ++s; - if (*s == 'l' || *s == 'y') - BEGIN LEXYACC; -#if defined(MSDOS) || defined(OS2) - if (*s == 'L' || *s == 'Y') - BEGIN LEXYACC; -#endif - } - } - - included_files = new_symbol_table(); - typedef_names = new_symbol_table(); - define_names = new_symbol_table(); - inc_depth = -1; - curly = 0; - ly_count = 0; - func_params = NULL; - yyin = infile; - include_file(strcpy(base_file, name), func_style != FUNC_NONE); - if (file_comments) { -#if OPT_LINTLIBRARY - if (lintLibrary()) { - put_blankline(stdout); - begin_tracking(); - } -#endif - put_string(stdout, "/* "); - put_string(stdout, cur_file_name()); - put_string(stdout, " */\n"); - } - yyparse(); - free_symbol_table(define_names); - free_symbol_table(typedef_names); - free_symbol_table(included_files); -} - -#ifdef NO_LEAKS -void -free_parser(void) -{ - free_symbol_table (type_qualifiers); -#ifdef FLEX_SCANNER - if (yy_current_buffer != 0) - yy_delete_buffer(yy_current_buffer); -#endif -} -#endif |
