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312 lines
7.3 KiB
C
312 lines
7.3 KiB
C
/* $Id$ */
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#define MAX_ARITY 2
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typedef int ItemSetNum;
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typedef int OperatorNum;
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typedef int NonTerminalNum;
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typedef int RuleNum;
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typedef int ArityNum;
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typedef int ERuleNum;
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extern NonTerminalNum last_user_nonterminal;
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extern NonTerminalNum max_nonterminal;
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extern RuleNum max_rule;
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extern ERuleNum max_erule_num;
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extern int max_arity;
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#ifdef __STDC__
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#define ARGS(x) x
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#else
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#define ARGS(x) ()
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#endif
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#ifndef NOLEX
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#define DELTAWIDTH 4
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typedef short DeltaCost[DELTAWIDTH];
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typedef short *DeltaPtr;
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extern void ASSIGNCOST ARGS((DeltaPtr, DeltaPtr));
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extern void ADDCOST ARGS((DeltaPtr, DeltaPtr));
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extern void MINUSCOST ARGS((DeltaPtr, DeltaPtr));
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extern void ZEROCOST ARGS((DeltaPtr));
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extern int LESSCOST ARGS((DeltaPtr, DeltaPtr));
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extern int EQUALCOST ARGS((DeltaPtr, DeltaPtr));
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#define PRINCIPLECOST(x) (x[0])
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#else
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#define DELTAWIDTH 1
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typedef int DeltaCost;
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typedef int DeltaPtr;
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#define ASSIGNCOST(l, r) ((l) = (r))
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#define ADDCOST(l, r) ((l) += (r))
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#define MINUSCOST(l, r) ((l) -= (r))
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#define ZEROCOST(x) ((x) = 0)
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#define LESSCOST(l, r) ((l) < (r))
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#define EQUALCOST(l, r) ((l) == (r))
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#define PRINCIPLECOST(x) (x)
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#endif /* NOLEX */
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#define NODIVERGE(c,state,nt,base) if (prevent_divergence > 0) CHECKDIVERGE(c,state,nt,base);
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struct list {
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void *x;
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struct list *next;
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};
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typedef struct list *List;
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struct intlist {
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int x;
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struct intlist *next;
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};
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typedef struct intlist *IntList;
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struct operator {
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char *name;
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unsigned int ref:1;
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OperatorNum num;
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ItemSetNum baseNum;
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ItemSetNum stateCount;
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ArityNum arity;
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struct table *table;
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};
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typedef struct operator *Operator;
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struct nonterminal {
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char *name;
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NonTerminalNum num;
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ItemSetNum baseNum;
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ItemSetNum ruleCount;
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struct plankMap *pmap;
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struct rule *sampleRule; /* diagnostic---gives "a" rule that with this lhs */
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};
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typedef struct nonterminal *NonTerminal;
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struct pattern {
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NonTerminal normalizer;
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Operator op; /* NULL if NonTerm -> NonTerm */
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NonTerminal children[MAX_ARITY];
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};
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typedef struct pattern *Pattern;
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struct rule {
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DeltaCost delta;
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ERuleNum erulenum;
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RuleNum num;
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RuleNum newNum;
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NonTerminal lhs;
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Pattern pat;
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unsigned int used:1;
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};
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typedef struct rule *Rule;
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struct item {
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DeltaCost delta;
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Rule rule;
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};
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typedef struct item Item;
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typedef short *Relevant; /* relevant non-terminals */
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typedef Item *ItemArray;
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struct item_set { /* indexed by NonTerminal */
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ItemSetNum num;
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ItemSetNum newNum;
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Operator op;
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struct item_set *kids[2];
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struct item_set *representative;
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Relevant relevant;
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ItemArray virgin;
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ItemArray closed;
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};
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typedef struct item_set *Item_Set;
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#define DIM_MAP_SIZE (1 << 8)
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#define GLOBAL_MAP_SIZE (1 << 15)
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struct mapping { /* should be a hash table for TS -> int */
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List *hash;
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int hash_size;
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int max_size;
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ItemSetNum count;
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Item_Set *set; /* map: int <-> Item_Set */
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};
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typedef struct mapping *Mapping;
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struct index_map {
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ItemSetNum max_size;
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Item_Set *class;
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};
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typedef struct index_map Index_Map;
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struct dimension {
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Relevant relevant;
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Index_Map index_map;
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Mapping map;
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ItemSetNum max_size;
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struct plankMap *pmap;
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};
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typedef struct dimension *Dimension;
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struct table {
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Operator op;
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List rules;
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Relevant relevant;
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Dimension dimen[MAX_ARITY]; /* 1 for each dimension */
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Item_Set *transition; /* maps local indices to global
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itemsets */
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};
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typedef struct table *Table;
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struct relation {
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Rule rule;
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DeltaCost chain;
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NonTerminalNum nextchain;
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DeltaCost sibling;
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int sibFlag;
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int sibComputed;
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};
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typedef struct relation *Relation;
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struct queue {
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List head;
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List tail;
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};
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typedef struct queue *Queue;
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struct plank {
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char *name;
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List fields;
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int width;
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};
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typedef struct plank *Plank;
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struct except {
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short index;
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short value;
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};
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typedef struct except *Exception;
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struct plankMap {
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List exceptions;
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int offset;
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struct stateMap *values;
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};
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typedef struct plankMap *PlankMap;
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struct stateMap {
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char *fieldname;
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Plank plank;
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int width;
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short *value;
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};
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typedef struct stateMap *StateMap;
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struct stateMapTable {
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List maps;
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};
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extern void CHECKDIVERGE ARGS((DeltaPtr, Item_Set, int, int));
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extern void zero ARGS((Item_Set));
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extern ItemArray newItemArray ARGS((void));
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extern ItemArray itemArrayCopy ARGS((ItemArray));
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extern Item_Set newItem_Set ARGS((Relevant));
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extern void freeItem_Set ARGS((Item_Set));
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extern Mapping newMapping ARGS((int));
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extern NonTerminal newNonTerminal ARGS((char *));
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extern int nonTerminalName ARGS((char *, int));
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extern Operator newOperator ARGS((char *, OperatorNum, ArityNum));
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extern Pattern newPattern ARGS((Operator));
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extern Rule newRule ARGS((DeltaPtr, ERuleNum, NonTerminal, Pattern));
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extern List newList ARGS((void *, List));
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extern IntList newIntList ARGS((int, IntList));
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extern int length ARGS((List));
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extern List appendList ARGS((void *, List));
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extern Table newTable ARGS((Operator));
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extern Queue newQ ARGS((void));
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extern void addQ ARGS((Queue, Item_Set));
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extern Item_Set popQ ARGS((Queue));
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extern int equivSet ARGS((Item_Set, Item_Set));
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extern Item_Set decode ARGS((Mapping, ItemSetNum));
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extern Item_Set encode ARGS((Mapping, Item_Set, int *));
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extern void build ARGS((void));
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extern Item_Set *transLval ARGS((Table, int, int));
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typedef void * (*ListFn) ARGS((void *));
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extern void foreachList ARGS((ListFn, List));
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extern void reveachList ARGS((ListFn, List));
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extern void addToTable ARGS((Table, Item_Set));
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extern void closure ARGS((Item_Set));
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extern void trim ARGS((Item_Set));
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extern void findChainRules ARGS((void));
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extern void findAllPairs ARGS((void));
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extern void addRelevant ARGS((Relevant, NonTerminalNum));
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extern void *zalloc ARGS((unsigned int));
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extern void zfree ARGS((void *));
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extern NonTerminal start;
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extern List rules;
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extern List chainrules;
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extern List operators;
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extern List leaves;
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extern List nonterminals;
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extern List grammarNts;
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extern Queue globalQ;
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extern Mapping globalMap;
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extern int exceptionTolerance;
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extern int prevent_divergence;
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extern int principleCost;
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extern int lexical;
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extern struct rule stub_rule;
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extern Relation *allpairs;
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extern Item_Set *sortedStates;
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extern Item_Set errorState;
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extern void dumpRelevant ARGS((Relevant));
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extern void dumpOperator ARGS((Operator, int));
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extern void dumpOperator_s ARGS((Operator));
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extern void dumpOperator_l ARGS((Operator));
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extern void dumpNonTerminal ARGS((NonTerminal));
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extern void dumpRule ARGS((Rule));
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extern void dumpRuleList ARGS((List));
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extern void dumpItem ARGS((Item *));
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extern void dumpItem_Set ARGS((Item_Set));
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extern void dumpMapping ARGS((Mapping));
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extern void dumpQ ARGS((Queue));
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extern void dumpIndex_Map ARGS((Index_Map *));
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extern void dumpDimension ARGS((Dimension));
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extern void dumpPattern ARGS((Pattern));
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extern void dumpTable ARGS((Table, int));
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extern void dumpTransition ARGS((Table));
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extern void dumpCost ARGS((DeltaCost));
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extern void dumpAllPairs ARGS((void));
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extern void dumpRelation ARGS((Relation));
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extern void dumpSortedStates ARGS((void));
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extern void dumpSortedRules ARGS((void));
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extern int debugTrim;
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#ifdef DEBUG
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#define debug(a,b) if (a) b
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#else
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#define debug(a,b)
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#endif
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extern int debugTables;
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#define TABLE_INCR 8
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#define STATES_INCR 64
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#ifdef NDEBUG
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#define assert(c) ((void) 0)
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#else
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#define assert(c) ((void) ((c) || fatal(__FILE__,__LINE__)))
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#endif
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extern void doStart ARGS((char *));
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extern void exit ARGS((int));
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extern int fatal ARGS((const char *, int));
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extern void yyerror ARGS((const char *));
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extern void yyerror1 ARGS((const char *));
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