#include #include #include #include /* machine-dependent definitions */ /* the following definitions are for the Tahoe */ /* they might have to be changed for other machines */ /* MAXCHAR is the largest unsigned character value */ /* MAXSHORT is the largest value of a C short */ /* MINSHORT is the most negative value of a C short */ /* MAXTABLE is the maximum table size */ /* BITS_PER_WORD is the number of bits in a C unsigned */ /* WORDSIZE computes the number of words needed to */ /* store n bits */ /* BIT returns the value of the n-th bit starting */ /* from r (0-indexed) */ /* SETBIT sets the n-th bit starting from r */ #define MAXCHAR 255 #define MAXSHORT 32767 #define MINSHORT -32768 #define MAXTABLE 32500 #define BITS_PER_WORD 32 #define WORDSIZE(n) (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD) #define BIT(r, n) ((((r)[(n)>>5])>>((n)&31))&1) #define SETBIT(r, n) ((r)[(n)>>5]|=((unsigned)1<<((n)&31))) /* character names */ #define NUL '\0' /* the null character */ #define NEWLINE '\n' /* line feed */ #define SP ' ' /* space */ #define BS '\b' /* backspace */ #define HT '\t' /* horizontal tab */ #define VT '\013' /* vertical tab */ #define CR '\r' /* carriage return */ #define FF '\f' /* form feed */ #define QUOTE '\'' /* single quote */ #define DOUBLE_QUOTE '\"' /* double quote */ #define BACKSLASH '\\' /* backslash */ /* defines for constructing filenames */ #define CODE_SUFFIX ".code.c" #define DEFINES_SUFFIX ".tab.h" #define OUTPUT_SUFFIX ".tab.c" #define JAVA_OUTPUT_SUFFIX ".java" /*rwj*/ #define VERBOSE_SUFFIX ".output" /* keyword codes */ #define TOKEN 0 #define LEFT 1 #define RIGHT 2 #define NONASSOC 3 #define MARK 4 #define TEXT 5 #define TYPE 6 #define START 7 #define UNION 8 #define IDENT 9 /* symbol classes */ #define UNKNOWN 0 #define TERM 1 #define NONTERM 2 /* the undefined value */ #define UNDEFINED (-1) /* action codes */ #define SHIFT 1 #define REDUCE 2 /* character macros */ #define IS_IDENT(c) (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$') #define IS_OCTAL(c) ((c) >= '0' && (c) <= '7') #define NUMERIC_VALUE(c) ((c) - '0') /* symbol macros */ #define ISTOKEN(s) ((s) < start_symbol) #define ISVAR(s) ((s) >= start_symbol) /* storage allocation macros */ #define CALLOC(k,n) (calloc((unsigned)(k),(unsigned)(n))) #define FREE(x) (free((char*)(x))) #define MALLOC(n) (malloc((unsigned)(n))) #define NEW(t) ((t*)allocate(sizeof(t))) #define NEW2(n,t) ((t*)allocate((unsigned)((n)*sizeof(t)))) #define REALLOC(p,n) (realloc((char*)(p),(unsigned)(n))) /* the structure of a symbol table entry */ typedef struct bucket bucket; struct bucket { struct bucket *link; struct bucket *next; char *name; char *tag; short value; short index; short prec; char class; char assoc; }; /* the structure of the LR(0) state machine */ typedef struct core core; struct core { struct core *next; struct core *link; short number; short accessing_symbol; short nitems; short items[1]; }; /* the structure used to record shifts */ typedef struct shifts shifts; struct shifts { struct shifts *next; short number; short nshifts; short shift[1]; }; /* the structure used to store reductions */ typedef struct reductions reductions; struct reductions { struct reductions *next; short number; short nreds; short rules[1]; }; /* the structure used to represent parser actions */ typedef struct action action; struct action { struct action *next; short symbol; short number; short prec; char action_code; char assoc; char suppressed; }; /* global variables */ extern char dflag; extern char lflag; extern char rflag; extern char tflag; extern char vflag; extern char jflag; /*rwj -- for java!*/ extern char *myname; extern char *cptr; extern char *line; extern int lineno; extern int outline; extern char *banner[]; extern char *tables[]; extern char *header[]; extern char *body[]; extern char *trailer[]; extern char *jbanner[]; /*rwj -- for java*/ extern char *jtables[]; extern char *jheader[]; extern char *jbody[]; extern char *jtrailer[]; extern char *java_class_name; /*rwj -- for java!*/ extern char *java_extend_name; extern char *java_semantic_type; extern char *action_file_name; extern char *code_file_name; extern char *defines_file_name; extern char *input_file_name; extern char *output_file_name; extern char *text_file_name; extern char *union_file_name; extern char *verbose_file_name; extern FILE *action_file; extern FILE *code_file; extern FILE *defines_file; extern FILE *input_file; extern FILE *output_file; extern FILE *text_file; extern FILE *union_file; extern FILE *verbose_file; extern int nitems; extern int nrules; extern int nsyms; extern int ntokens; extern int nvars; extern int ntags; extern char unionized; extern char line_format[]; extern char jline_format[];/*rwj*/ extern int start_symbol; extern char **symbol_name; extern short *symbol_value; extern short *symbol_prec; extern char *symbol_assoc; extern short *ritem; extern short *rlhs; extern short *rrhs; extern short *rprec; extern char *rassoc; extern short **derives; extern char *nullable; extern bucket *first_symbol; extern bucket *last_symbol; extern int nstates; extern core *first_state; extern shifts *first_shift; extern reductions *first_reduction; extern short *accessing_symbol; extern core **state_table; extern shifts **shift_table; extern reductions **reduction_table; extern unsigned *LA; extern short *LAruleno; extern short *lookaheads; extern short *goto_map; extern short *from_state; extern short *to_state; extern action **parser; extern int SRtotal; extern int RRtotal; extern short *SRconflicts; extern short *RRconflicts; extern short *defred; extern short *rules_used; extern short nunused; extern short final_state; /* system variables */ extern int errno; /************************ ## PROTOTYPES ************************/ /*in warshall.c*/ void transitive_closure(unsigned *R, int n); void reflexive_transitive_closure(unsigned *R, int n); /*in verbose.c*/ void verbose(void); void log_unused(void); void log_conflicts(void); void print_state(int state); void print_conflicts(int state); void print_core(int state); void print_nulls(int state); void print_actions(int stateno); void print_shifts(action *p); void print_reductions(action *p,int defred); void print_gotos(int stateno); /*in closure.c*/ void set_EFF(void); void set_first_derives(void); void closure(short *nucleus,int n); void finalize_closure(void); void print_closure(int n); void print_EFF(void); void print_first_derives(void); /*in error.c*/ void fatal(char *msg); void no_space(void); void open_error(char *filename); void unexpected_EOF(void); void print_pos(char *st_line,char *st_cptr); void syntax_error(int st_lineno,char *st_line,char *st_cptr); void unterminated_comment(int c_lineno,char *c_line,char *c_cptr); void unterminated_string(int s_lineno,char *s_line,char *s_cptr); void unterminated_text(int t_lineno,char *t_line,char *t_cptr); void unterminated_union(int u_lineno,char *u_line,char *u_cptr); void over_unionized(char *u_cptr); void illegal_tag(int t_lineno,char *t_line,char *t_cptr); void illegal_character(char *c_cptr); void used_reserved(char *s); void tokenized_start(char *s); void retyped_warning(char *s); void reprec_warning(char *s); void revalued_warning(char *s); void terminal_start(char *s); void restarted_warning(void); void no_grammar(void); void terminal_lhs(int s_lineno); void prec_redeclared(void); void unterminated_action(int a_lineno,char *a_line,char *a_cptr); void dollar_warning(int a_lineno,int i); void dollar_error(int a_lineno,char *a_line,char *a_cptr); void untyped_lhs(void); void untyped_rhs(int i,char *s); void unknown_rhs(int i); void default_action_warning(void); void undefined_goal(char *s); void undefined_symbol_warning(char *s); /*in skeleton.c*/ void write_section(char *section[]); /*in symtab.c*/ int hash(char *name); bucket *make_bucket(char *name); bucket *lookup(char *name); void create_symbol_table(void); void free_symbol_table(void); void free_symbols(void); /*in reader.c*/ void cachec(int c); void get_line(void); char *dup_line(void); void skip_comment(void); int nextc(void); int keyword(void); void copy_ident(void); void copy_text(void); void copy_union(void); int hexval(int c); bucket *get_literal(void); int is_reserved(char *name); bucket *get_name(void); int get_number(void); char *get_tag(void); void declare_tokens(int assoc); void declare_types(void); void declare_start(void); void read_declarations(void); void initialize_grammar(void); void expand_items(void); void expand_rules(void); void advance_to_start(void); void start_rule(bucket *bp,int s_lineno); void end_rule(void); void insert_empty_rule(void); void add_symbol(void); void copy_action(void); int mark_symbol(void); void read_grammar(void); void free_tags(void); void pack_names(void); void check_symbols(void); void pack_symbols(void); void pack_grammar(void); void print_grammar(void); void reader(void); /*in output.c*/ void output(void); void output_rule_data(void) ; void output_yydefred(void); void output_actions(void); void token_actions(void); void goto_actions(void); int default_goto(int symbol); void save_column(int symbol,int default_state); void sort_actions(void); void pack_table(void); int matching_vector(int vector); int pack_vector(int vector); void output_base(void); void output_table(void); void output_check(void); int is_C_identifier(char *name); void output_defines(void); void output_stored_text(void); void output_debug(void); void output_stype(void); void output_trailing_text(void); void output_semantic_actions(void); void free_itemsets(void); void free_shifts(void); void free_reductions(void); /*in mkpar.c*/ void make_parser(void); action *parse_actions(int stateno); action *get_shifts(int stateno); action *add_reductions(int stateno,action *actions); action *add_reduce(action *actions,int ruleno,int symbol); void find_final_state(void); void unused_rules(void); void remove_conflicts(void); void total_conflicts(void); int sole_reduction(int stateno); void defreds(void); void free_action_row(action *p); void free_parser(void); /*in lr0.c*/ void allocate_itemsets(void); void allocate_storage(void); void append_states(void); void free_storage(void); void generate_states(void); int get_state(int symbol); void initialize_states(void); void new_itemsets(void); core *new_state(int symbol); void show_cores(void); void show_ritems(void); void show_rrhs(void); void show_shifts(void); void save_shifts(void); void save_reductions(void); void set_derives(void); void free_derives(void); void print_derives(void); void set_nullable(void); void free_nullable(void); void lr0(void); /*in lalr.c*/ void lalr(void); void set_state_table(void); void set_accessing_symbol(void); void set_shift_table(void); void set_reduction_table(void); void set_maxrhs(void); void initialize_LA(void); void set_goto_map(void); int map_goto(int state,int symbol); void initialize_F(void); void build_relations(void); void add_lookback_edge(int stateno,int ruleno,int gotono); short **transpose(short **R,int n); void compute_FOLLOWS(void); void compute_lookaheads(void); void digraph(short **relation); void traverse(int i); /*in main.c*/ void done(int k); void onintr(int); void set_signals(void); void usage(void); void getargs(int argc,char **argv); char *allocate(unsigned n); void create_file_names(void); void open_files(void); int main(int argc,char **argv);