Switch kernel header parsing to python libclang

Replace the tokenizer in cpp.py with libclang.

Bug: 18937958
Change-Id: I27630904c6d2849418cd5ca3d3c612ec3078686d
diff --git a/libc/kernel/uapi/linux/l2tp.h b/libc/kernel/uapi/linux/l2tp.h
index 0bc4dd3..4eaf7ad 100644
--- a/libc/kernel/uapi/linux/l2tp.h
+++ b/libc/kernel/uapi/linux/l2tp.h
@@ -26,136 +26,133 @@
 #define __SOCK_SIZE__ 16
 struct sockaddr_l2tpip {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_sa_family_t l2tp_family;
- __be16 l2tp_unused;
- struct in_addr l2tp_addr;
- __u32 l2tp_conn_id;
+  __kernel_sa_family_t l2tp_family;
+  __be16 l2tp_unused;
+  struct in_addr l2tp_addr;
+  __u32 l2tp_conn_id;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned char __pad[sizeof(struct sockaddr) -
- sizeof(__kernel_sa_family_t) -
- sizeof(__be16) - sizeof(struct in_addr) -
- sizeof(__u32)];
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  unsigned char __pad[sizeof(struct sockaddr) - sizeof(__kernel_sa_family_t) - sizeof(__be16) - sizeof(struct in_addr) - sizeof(__u32)];
 };
 struct sockaddr_l2tpip6 {
- __kernel_sa_family_t l2tp_family;
- __be16 l2tp_unused;
+  __kernel_sa_family_t l2tp_family;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be32 l2tp_flowinfo;
- struct in6_addr l2tp_addr;
- __u32 l2tp_scope_id;
- __u32 l2tp_conn_id;
+  __be16 l2tp_unused;
+  __be32 l2tp_flowinfo;
+  struct in6_addr l2tp_addr;
+  __u32 l2tp_scope_id;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 l2tp_conn_id;
 };
 enum {
- L2TP_CMD_NOOP,
- L2TP_CMD_TUNNEL_CREATE,
+  L2TP_CMD_NOOP,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_CMD_TUNNEL_DELETE,
- L2TP_CMD_TUNNEL_MODIFY,
- L2TP_CMD_TUNNEL_GET,
- L2TP_CMD_SESSION_CREATE,
+  L2TP_CMD_TUNNEL_CREATE,
+  L2TP_CMD_TUNNEL_DELETE,
+  L2TP_CMD_TUNNEL_MODIFY,
+  L2TP_CMD_TUNNEL_GET,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_CMD_SESSION_DELETE,
- L2TP_CMD_SESSION_MODIFY,
- L2TP_CMD_SESSION_GET,
- __L2TP_CMD_MAX,
+  L2TP_CMD_SESSION_CREATE,
+  L2TP_CMD_SESSION_DELETE,
+  L2TP_CMD_SESSION_MODIFY,
+  L2TP_CMD_SESSION_GET,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __L2TP_CMD_MAX,
 };
 #define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1)
 enum {
- L2TP_ATTR_NONE,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_PW_TYPE,
- L2TP_ATTR_ENCAP_TYPE,
- L2TP_ATTR_OFFSET,
- L2TP_ATTR_DATA_SEQ,
+  L2TP_ATTR_NONE,
+  L2TP_ATTR_PW_TYPE,
+  L2TP_ATTR_ENCAP_TYPE,
+  L2TP_ATTR_OFFSET,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_L2SPEC_TYPE,
- L2TP_ATTR_L2SPEC_LEN,
- L2TP_ATTR_PROTO_VERSION,
- L2TP_ATTR_IFNAME,
+  L2TP_ATTR_DATA_SEQ,
+  L2TP_ATTR_L2SPEC_TYPE,
+  L2TP_ATTR_L2SPEC_LEN,
+  L2TP_ATTR_PROTO_VERSION,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_CONN_ID,
- L2TP_ATTR_PEER_CONN_ID,
- L2TP_ATTR_SESSION_ID,
- L2TP_ATTR_PEER_SESSION_ID,
+  L2TP_ATTR_IFNAME,
+  L2TP_ATTR_CONN_ID,
+  L2TP_ATTR_PEER_CONN_ID,
+  L2TP_ATTR_SESSION_ID,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_UDP_CSUM,
- L2TP_ATTR_VLAN_ID,
- L2TP_ATTR_COOKIE,
- L2TP_ATTR_PEER_COOKIE,
+  L2TP_ATTR_PEER_SESSION_ID,
+  L2TP_ATTR_UDP_CSUM,
+  L2TP_ATTR_VLAN_ID,
+  L2TP_ATTR_COOKIE,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_DEBUG,
- L2TP_ATTR_RECV_SEQ,
- L2TP_ATTR_SEND_SEQ,
- L2TP_ATTR_LNS_MODE,
+  L2TP_ATTR_PEER_COOKIE,
+  L2TP_ATTR_DEBUG,
+  L2TP_ATTR_RECV_SEQ,
+  L2TP_ATTR_SEND_SEQ,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_USING_IPSEC,
- L2TP_ATTR_RECV_TIMEOUT,
- L2TP_ATTR_FD,
- L2TP_ATTR_IP_SADDR,
+  L2TP_ATTR_LNS_MODE,
+  L2TP_ATTR_USING_IPSEC,
+  L2TP_ATTR_RECV_TIMEOUT,
+  L2TP_ATTR_FD,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_IP_DADDR,
- L2TP_ATTR_UDP_SPORT,
- L2TP_ATTR_UDP_DPORT,
- L2TP_ATTR_MTU,
+  L2TP_ATTR_IP_SADDR,
+  L2TP_ATTR_IP_DADDR,
+  L2TP_ATTR_UDP_SPORT,
+  L2TP_ATTR_UDP_DPORT,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_MRU,
- L2TP_ATTR_STATS,
- L2TP_ATTR_IP6_SADDR,
- L2TP_ATTR_IP6_DADDR,
+  L2TP_ATTR_MTU,
+  L2TP_ATTR_MRU,
+  L2TP_ATTR_STATS,
+  L2TP_ATTR_IP6_SADDR,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_UDP_ZERO_CSUM6_TX,
- L2TP_ATTR_UDP_ZERO_CSUM6_RX,
- __L2TP_ATTR_MAX,
+  L2TP_ATTR_IP6_DADDR,
+  L2TP_ATTR_UDP_ZERO_CSUM6_TX,
+  L2TP_ATTR_UDP_ZERO_CSUM6_RX,
+  __L2TP_ATTR_MAX,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1)
 enum {
- L2TP_ATTR_STATS_NONE,
- L2TP_ATTR_TX_PACKETS,
+  L2TP_ATTR_STATS_NONE,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_TX_BYTES,
- L2TP_ATTR_TX_ERRORS,
- L2TP_ATTR_RX_PACKETS,
- L2TP_ATTR_RX_BYTES,
+  L2TP_ATTR_TX_PACKETS,
+  L2TP_ATTR_TX_BYTES,
+  L2TP_ATTR_TX_ERRORS,
+  L2TP_ATTR_RX_PACKETS,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ATTR_RX_SEQ_DISCARDS,
- L2TP_ATTR_RX_OOS_PACKETS,
- L2TP_ATTR_RX_ERRORS,
- __L2TP_ATTR_STATS_MAX,
+  L2TP_ATTR_RX_BYTES,
+  L2TP_ATTR_RX_SEQ_DISCARDS,
+  L2TP_ATTR_RX_OOS_PACKETS,
+  L2TP_ATTR_RX_ERRORS,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __L2TP_ATTR_STATS_MAX,
 };
 #define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1)
 enum l2tp_pwtype {
- L2TP_PWTYPE_NONE = 0x0000,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_PWTYPE_ETH_VLAN = 0x0004,
- L2TP_PWTYPE_ETH = 0x0005,
- L2TP_PWTYPE_PPP = 0x0007,
- L2TP_PWTYPE_PPP_AC = 0x0008,
+  L2TP_PWTYPE_NONE = 0x0000,
+  L2TP_PWTYPE_ETH_VLAN = 0x0004,
+  L2TP_PWTYPE_ETH = 0x0005,
+  L2TP_PWTYPE_PPP = 0x0007,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_PWTYPE_IP = 0x000b,
- __L2TP_PWTYPE_MAX
+  L2TP_PWTYPE_PPP_AC = 0x0008,
+  L2TP_PWTYPE_IP = 0x000b,
+  __L2TP_PWTYPE_MAX
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum l2tp_l2spec_type {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_L2SPECTYPE_NONE,
- L2TP_L2SPECTYPE_DEFAULT,
+  L2TP_L2SPECTYPE_NONE,
+  L2TP_L2SPECTYPE_DEFAULT,
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum l2tp_encap_type {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_ENCAPTYPE_UDP,
- L2TP_ENCAPTYPE_IP,
+  L2TP_ENCAPTYPE_UDP,
+  L2TP_ENCAPTYPE_IP,
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum l2tp_seqmode {
+  L2TP_SEQ_NONE = 0,
+  L2TP_SEQ_IP = 1,
+  L2TP_SEQ_ALL = 2,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- L2TP_SEQ_NONE = 0,
- L2TP_SEQ_IP = 1,
- L2TP_SEQ_ALL = 2,
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define L2TP_GENL_NAME "l2tp"
 #define L2TP_GENL_VERSION 0x1
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */