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/ip.h b/libc/kernel/uapi/linux/ip.h
index fc0bd78..8567d24 100644
--- a/libc/kernel/uapi/linux/ip.h
+++ b/libc/kernel/uapi/linux/ip.h
@@ -22,14 +22,14 @@
 #include <asm/byteorder.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPTOS_TOS_MASK 0x1E
-#define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK)
+#define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK)
 #define IPTOS_LOWDELAY 0x10
 #define IPTOS_THROUGHPUT 0x08
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPTOS_RELIABILITY 0x04
 #define IPTOS_MINCOST 0x02
 #define IPTOS_PREC_MASK 0xE0
-#define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK)
+#define IPTOS_PREC(tos) ((tos) & IPTOS_PREC_MASK)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPTOS_PREC_NETCONTROL 0xe0
 #define IPTOS_PREC_INTERNETCONTROL 0xc0
@@ -44,27 +44,27 @@
 #define IPOPT_COPY 0x80
 #define IPOPT_CLASS_MASK 0x60
 #define IPOPT_NUMBER_MASK 0x1f
-#define IPOPT_COPIED(o) ((o)&IPOPT_COPY)
+#define IPOPT_COPIED(o) ((o) & IPOPT_COPY)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define IPOPT_CLASS(o) ((o)&IPOPT_CLASS_MASK)
-#define IPOPT_NUMBER(o) ((o)&IPOPT_NUMBER_MASK)
+#define IPOPT_CLASS(o) ((o) & IPOPT_CLASS_MASK)
+#define IPOPT_NUMBER(o) ((o) & IPOPT_NUMBER_MASK)
 #define IPOPT_CONTROL 0x00
 #define IPOPT_RESERVED1 0x20
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPOPT_MEASUREMENT 0x40
 #define IPOPT_RESERVED2 0x60
-#define IPOPT_END (0 |IPOPT_CONTROL)
-#define IPOPT_NOOP (1 |IPOPT_CONTROL)
+#define IPOPT_END (0 | IPOPT_CONTROL)
+#define IPOPT_NOOP (1 | IPOPT_CONTROL)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define IPOPT_SEC (2 |IPOPT_CONTROL|IPOPT_COPY)
-#define IPOPT_LSRR (3 |IPOPT_CONTROL|IPOPT_COPY)
-#define IPOPT_TIMESTAMP (4 |IPOPT_MEASUREMENT)
-#define IPOPT_CIPSO (6 |IPOPT_CONTROL|IPOPT_COPY)
+#define IPOPT_SEC (2 | IPOPT_CONTROL | IPOPT_COPY)
+#define IPOPT_LSRR (3 | IPOPT_CONTROL | IPOPT_COPY)
+#define IPOPT_TIMESTAMP (4 | IPOPT_MEASUREMENT)
+#define IPOPT_CIPSO (6 | IPOPT_CONTROL | IPOPT_COPY)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define IPOPT_RR (7 |IPOPT_CONTROL)
-#define IPOPT_SID (8 |IPOPT_CONTROL|IPOPT_COPY)
-#define IPOPT_SSRR (9 |IPOPT_CONTROL|IPOPT_COPY)
-#define IPOPT_RA (20|IPOPT_CONTROL|IPOPT_COPY)
+#define IPOPT_RR (7 | IPOPT_CONTROL)
+#define IPOPT_SID (8 | IPOPT_CONTROL | IPOPT_COPY)
+#define IPOPT_SSRR (9 | IPOPT_CONTROL | IPOPT_COPY)
+#define IPOPT_RA (20 | IPOPT_CONTROL | IPOPT_COPY)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPVERSION 4
 #define MAXTTL 255
@@ -87,98 +87,94 @@
 struct iphdr {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef __LITTLE_ENDIAN_BITFIELD
- __u8 ihl:4,
- version:4;
-#elif defined (__BIG_ENDIAN_BITFIELD)
+  __u8 ihl : 4, version : 4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+  __u8 version : 4, ihl : 4;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 version:4,
- ihl:4;
 #else
 #error "Please fix <asm/byteorder.h>"
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
- __u8 tos;
- __be16 tot_len;
- __be16 id;
+  __u8 tos;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be16 frag_off;
- __u8 ttl;
- __u8 protocol;
- __sum16 check;
+  __be16 tot_len;
+  __be16 id;
+  __be16 frag_off;
+  __u8 ttl;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be32 saddr;
- __be32 daddr;
+  __u8 protocol;
+  __sum16 check;
+  __be32 saddr;
+  __be32 daddr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct ip_auth_hdr {
+  __u8 nexthdr;
+  __u8 hdrlen;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 nexthdr;
- __u8 hdrlen;
- __be16 reserved;
- __be32 spi;
+  __be16 reserved;
+  __be32 spi;
+  __be32 seq_no;
+  __u8 auth_data[0];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be32 seq_no;
- __u8 auth_data[0];
 };
 struct ip_esp_hdr {
+  __be32 spi;
+  __be32 seq_no;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be32 spi;
- __be32 seq_no;
- __u8 enc_data[0];
+  __u8 enc_data[0];
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ip_comp_hdr {
- __u8 nexthdr;
- __u8 flags;
- __be16 cpi;
+  __u8 nexthdr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u8 flags;
+  __be16 cpi;
 };
 struct ip_beet_phdr {
- __u8 nexthdr;
- __u8 hdrlen;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 padlen;
- __u8 reserved;
+  __u8 nexthdr;
+  __u8 hdrlen;
+  __u8 padlen;
+  __u8 reserved;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-enum
+enum {
+  IPV4_DEVCONF_FORWARDING = 1,
+  IPV4_DEVCONF_MC_FORWARDING,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-{
- IPV4_DEVCONF_FORWARDING=1,
- IPV4_DEVCONF_MC_FORWARDING,
- IPV4_DEVCONF_PROXY_ARP,
+  IPV4_DEVCONF_PROXY_ARP,
+  IPV4_DEVCONF_ACCEPT_REDIRECTS,
+  IPV4_DEVCONF_SECURE_REDIRECTS,
+  IPV4_DEVCONF_SEND_REDIRECTS,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_ACCEPT_REDIRECTS,
- IPV4_DEVCONF_SECURE_REDIRECTS,
- IPV4_DEVCONF_SEND_REDIRECTS,
- IPV4_DEVCONF_SHARED_MEDIA,
+  IPV4_DEVCONF_SHARED_MEDIA,
+  IPV4_DEVCONF_RP_FILTER,
+  IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
+  IPV4_DEVCONF_BOOTP_RELAY,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_RP_FILTER,
- IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
- IPV4_DEVCONF_BOOTP_RELAY,
- IPV4_DEVCONF_LOG_MARTIANS,
+  IPV4_DEVCONF_LOG_MARTIANS,
+  IPV4_DEVCONF_TAG,
+  IPV4_DEVCONF_ARPFILTER,
+  IPV4_DEVCONF_MEDIUM_ID,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_TAG,
- IPV4_DEVCONF_ARPFILTER,
- IPV4_DEVCONF_MEDIUM_ID,
- IPV4_DEVCONF_NOXFRM,
+  IPV4_DEVCONF_NOXFRM,
+  IPV4_DEVCONF_NOPOLICY,
+  IPV4_DEVCONF_FORCE_IGMP_VERSION,
+  IPV4_DEVCONF_ARP_ANNOUNCE,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_NOPOLICY,
- IPV4_DEVCONF_FORCE_IGMP_VERSION,
- IPV4_DEVCONF_ARP_ANNOUNCE,
- IPV4_DEVCONF_ARP_IGNORE,
+  IPV4_DEVCONF_ARP_IGNORE,
+  IPV4_DEVCONF_PROMOTE_SECONDARIES,
+  IPV4_DEVCONF_ARP_ACCEPT,
+  IPV4_DEVCONF_ARP_NOTIFY,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_PROMOTE_SECONDARIES,
- IPV4_DEVCONF_ARP_ACCEPT,
- IPV4_DEVCONF_ARP_NOTIFY,
- IPV4_DEVCONF_ACCEPT_LOCAL,
+  IPV4_DEVCONF_ACCEPT_LOCAL,
+  IPV4_DEVCONF_SRC_VMARK,
+  IPV4_DEVCONF_PROXY_ARP_PVLAN,
+  IPV4_DEVCONF_ROUTE_LOCALNET,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_SRC_VMARK,
- IPV4_DEVCONF_PROXY_ARP_PVLAN,
- IPV4_DEVCONF_ROUTE_LOCALNET,
- IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL,
- __IPV4_DEVCONF_MAX
+  IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL,
+  IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL,
+  __IPV4_DEVCONF_MAX
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif