Init

usr.etc/htable/parse.y

@@ -0,0 +1,137 @@
+%{
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+#ifndef lint
+static	char sccsid[] = "@(#)parse.y 1.1 94/10/31 SMI"; /* from UCB 5.2 6/21/85 */
+#endif not lint
+
+
+#include "htable.h"
+%}
+
+%union {
+	int	number;
+	struct	addr *addrlist;
+	struct	name *namelist;
+}
+%start Table
+
+%token			END
+%token <number>		NUMBER KEYWORD
+%token <namelist>	NAME
+
+%type <namelist>	Names Cputype Opsys Protos Proto
+%type <addrlist>	Addresses Address
+%%
+Table	:	Entry
+	|	Table Entry
+	;
+
+Entry	:	KEYWORD ':' Addresses ':' Names ':' END
+	= {
+		do_entry($1, $3, $5, NONAME, NONAME, NONAME);
+	}
+	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' END
+	= {
+		do_entry($1, $3, $5, $7, NONAME, NONAME);
+	}
+	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' END
+	= {
+		do_entry($1, $3, $5, $7, $9, NONAME);
+	}
+	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' ':' END
+	= {
+		do_entry($1, $3, $5, $7, $9, NONAME);
+	}
+	|	KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' Protos ':' END
+	= {
+		do_entry($1, $3, $5, $7, $9, $11);
+	}
+	|	error END
+	|	END		/* blank line */
+	;
+
+Addresses:	Address
+	= {
+		$$ = $1;
+	}
+	|	Address ',' Addresses
+	= {
+		$1->addr_link = $3;
+		$$ = $1;
+	}
+	;
+
+Address	:	NUMBER '.' NUMBER '.' NUMBER '.' NUMBER
+	= {
+		char *a;
+
+		$$ = (struct addr *)malloc(sizeof (struct addr));
+		a = (char *)&($$->addr_val);
+		a[0] = $1; a[1] = $3; a[2] = $5; a[3] = $7;
+		$$->addr_link = NOADDR;
+	}
+	;
+
+Names	:	NAME
+	= {
+		$$ = $1;
+	}
+	|	NAME ',' Names
+	= {
+		$1->name_link = $3;
+		$$ = $1;
+	}
+	;
+
+Cputype :	/* empty */
+	= {
+		$$ = NONAME;
+	}
+	|	NAME
+	= {
+		$$ = $1;
+	}
+	;
+
+Opsys	:	/* empty */
+	= {
+		$$ = NONAME;
+	}
+	|	NAME
+	= {
+		$$ = $1;
+	}
+	;
+
+Protos	:	Proto
+	= {
+		$$ = $1;
+	}
+	|	Proto ',' Protos
+	= {
+		$1->name_link = $3;
+		$$ = $1;
+	}
+	;
+
+Proto	:	NAME
+	= {
+		$$ = $1;
+	}
+	;
+%%
+
+#include <stdio.h>
+
+extern int yylineno;
+
+yyerror(msg)
+	char *msg;
+{
+	fprintf(stderr, "\"%s\", line %d: %s\n", infile, yylineno, msg);
+}