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[pccts] / antlr / hash.h

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+/*
+ * hash.h -- define hash table entries, sizes, hash function...
+ *
+ * $Id: hash.h,v 1.2 95/06/15 18:06:57 parrt Exp $
+ * $Revision: 1.2 $
+ *
+ * SOFTWARE RIGHTS
+ *
+ * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
+ * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
+ * company may do whatever they wish with source code distributed with
+ * PCCTS or the code generated by PCCTS, including the incorporation of
+ * PCCTS, or its output, into commerical software.
+ * 
+ * We encourage users to develop software with PCCTS.  However, we do ask
+ * that credit is given to us for developing PCCTS.  By "credit",
+ * we mean that if you incorporate our source code into one of your
+ * programs (commercial product, research project, or otherwise) that you
+ * acknowledge this fact somewhere in the documentation, research report,
+ * etc...  If you like PCCTS and have developed a nice tool with the
+ * output, please mention that you developed it using PCCTS.  In
+ * addition, we ask that this header remain intact in our source code.
+ * As long as these guidelines are kept, we expect to continue enhancing
+ * this system and expect to make other tools available as they are
+ * completed.
+ *
+ * ANTLR 1.33
+ * Terence Parr
+ * Parr Research Corporation
+ * with Purdue University and AHPCRC, University of Minnesota
+ * 1989-1995
+ */
+
+                               /* H a s h  T a b l e  S t u f f */
+
+#ifndef HashTableSize
+#define HashTableSize  553
+#endif
+#ifndef StrTableSize
+#define StrTableSize   1000000
+#endif
+
+typedef struct _entry {                /* Minimum hash table entry -- superclass */
+                       char *str;
+                       struct _entry *next;
+               } Entry;
+
+/* Hash 's' using 'size', place into h (s is modified) */
+#define Hash(s,h,size)                                                         \
+       {while ( *s != '\0' ) h = (h<<1) + *s++;                \
+       h %= size;}
+
+#ifdef __STDC__
+Entry  *hash_get(Entry **, char *),
+               **newHashTable(void),
+               *hash_add(Entry **, char *, Entry *);
+
+void   killHashTable(Entry **);
+
+#else
+Entry *hash_get(), **newHashTable(), *hash_add();
+#endif