/* $NetBSD: grammar.y,v 1.1.1.5 2013/04/06 14:45:27 christos Exp $ */ /* 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 #define YYSTYPE_IS_DECLARED #define yyerror yaccError #endif #if defined(YYBISON) || !defined(YYBYACC) static void yyerror(const char *s); #endif %} %token '(' '*' '&' /* 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 */ T_VA_DCL %type decl_specifiers decl_specifier %type storage_class type_specifier type_qualifier %type struct_or_union_specifier enum_specifier %type init_declarator_list %type init_declarator declarator direct_declarator %type abs_declarator direct_abs_declarator %type parameter_type_list parameter_list %type parameter_declaration %type opt_identifier_list identifier_list %type struct_or_union pointer opt_type_qualifiers type_qualifier_list any_id identifier_or_ref %type enumeration %{ #include #include #include #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 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(&$$, $1.text, $1.begin, DS_NONE); } | T_DEFINE_NAME { /* This rule allows the nonterminal to scan #define * names as if they were type modifiers. */ Symbol *s; s = find_symbol(define_names, $1.text); if (s != NULL) new_decl_spec(&$$, $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 occurances 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