Stuff VCL programs needs to know about.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@74 d4fa192b-c00b-0410-8231-f00ffab90ce4

include/vcl_lang.h

+/*
+ * Stuff necessary to compile a VCL programs C code
+ *
+ * XXX: When this file is changed, lib/libvcl/vcl_gen_fixed_token.tcl
+ * XXX: *MUST* be rerun.
+ */
+
+
+struct vcl_ref {
+	unsigned	line;
+	unsigned	pos;
+	unsigned	count;
+	const char	*token;
+};
+
+struct vcl_acl {
+	unsigned	ip;
+	unsigned	mask;
+};
+
+struct client {
+	unsigned	ip;
+};
+
+struct req {
+	char		*req;
+	char		*useragent;
+	struct {
+		char		*path;
+		char		*host;
+	}		url;
+	double		ttlfactor;
+	struct backend	*backend;
+};
+
+struct backend {
+	unsigned	ip;
+	double		responsetime;
+	double		timeout;
+	double		bandwidth;
+	int		down;
+};
+
+struct obj {
+	int		exists;
+	double		ttl;
+	unsigned	result;
+	unsigned	size;
+	unsigned	usage;
+};
+
+#define VCL_FARGS	struct client *client, struct obj *obj, struct req *req, struct backend *backend
+#define VCL_PASS_ARGS	client, obj, req, backend
+
+void VCL_count(unsigned);
+void VCL_no_cache();
+void VCL_no_new_cache();
+int ip_match(unsigned, struct vcl_acl *);
+int string_match(const char *, const char *);
+int VCL_rewrite(const char *, const char *);
+int VCL_error(unsigned, const char *);
+int VCL_fetch(void);
+int VCL_switch_config(const char *);
+
+typedef void vcl_init_f(void);
+
+struct VCL_conf {
+	unsigned	magic;
+#define VCL_CONF_MAGIC	0x7406c509	/* from /dev/random */
+	vcl_init_f	*init_func;
+	struct backend	*default_backend;
+	struct vcl_ref	*ref;
+	unsigned	nref;
+};