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/ipv6.h b/libc/kernel/uapi/linux/ipv6.h
index 8f5aaa0..3425f5a 100644
--- a/libc/kernel/uapi/linux/ipv6.h
+++ b/libc/kernel/uapi/linux/ipv6.h
@@ -24,36 +24,36 @@
 #include <asm/byteorder.h>
 #define IPV6_MIN_MTU 1280
 struct in6_pktinfo {
- struct in6_addr ipi6_addr;
+  struct in6_addr ipi6_addr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- int ipi6_ifindex;
+  int ipi6_ifindex;
 };
 struct ip6_mtuinfo {
- struct sockaddr_in6 ip6m_addr;
+  struct sockaddr_in6 ip6m_addr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u32 ip6m_mtu;
+  __u32 ip6m_mtu;
 };
 struct in6_ifreq {
- struct in6_addr ifr6_addr;
+  struct in6_addr ifr6_addr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u32 ifr6_prefixlen;
- int ifr6_ifindex;
+  __u32 ifr6_prefixlen;
+  int ifr6_ifindex;
 };
 #define IPV6_SRCRT_STRICT 0x01
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPV6_SRCRT_TYPE_0 0
 #define IPV6_SRCRT_TYPE_2 2
 struct ipv6_rt_hdr {
- __u8 nexthdr;
+  __u8 nexthdr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 hdrlen;
- __u8 type;
- __u8 segments_left;
+  __u8 hdrlen;
+  __u8 type;
+  __u8 segments_left;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ipv6_opt_hdr {
- __u8 nexthdr;
- __u8 hdrlen;
+  __u8 nexthdr;
+  __u8 hdrlen;
 } __attribute__((packed));
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ipv6_destopt_hdr ipv6_opt_hdr
@@ -61,91 +61,89 @@
 #define IPV6_OPT_ROUTERALERT_MLD 0x0000
 struct rt0_hdr {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct ipv6_rt_hdr rt_hdr;
- __u32 reserved;
- struct in6_addr addr[0];
+  struct ipv6_rt_hdr rt_hdr;
+  __u32 reserved;
+  struct in6_addr addr[0];
 #define rt0_type rt_hdr.type
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct rt2_hdr {
- struct ipv6_rt_hdr rt_hdr;
- __u32 reserved;
+  struct ipv6_rt_hdr rt_hdr;
+  __u32 reserved;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct in6_addr addr;
+  struct in6_addr addr;
 #define rt2_type rt_hdr.type
 };
 struct ipv6_destopt_hao {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 type;
- __u8 length;
- struct in6_addr addr;
+  __u8 type;
+  __u8 length;
+  struct in6_addr addr;
 } __attribute__((packed));
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ipv6hdr {
 #ifdef __LITTLE_ENDIAN_BITFIELD
- __u8 priority:4,
- version:4;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u8 priority : 4, version : 4;
 #elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 version:4,
- priority:4;
-#else
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u8 version : 4, priority : 4;
+#else
 #error "Please fix <asm/byteorder.h>"
 #endif
- __u8 flow_lbl[3];
- __be16 payload_len;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 nexthdr;
- __u8 hop_limit;
- struct in6_addr saddr;
- struct in6_addr daddr;
+  __u8 flow_lbl[3];
+  __be16 payload_len;
+  __u8 nexthdr;
+  __u8 hop_limit;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  struct in6_addr saddr;
+  struct in6_addr daddr;
 };
 enum {
- DEVCONF_FORWARDING = 0,
- DEVCONF_HOPLIMIT,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_MTU6,
- DEVCONF_ACCEPT_RA,
- DEVCONF_ACCEPT_REDIRECTS,
- DEVCONF_AUTOCONF,
+  DEVCONF_FORWARDING = 0,
+  DEVCONF_HOPLIMIT,
+  DEVCONF_MTU6,
+  DEVCONF_ACCEPT_RA,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_DAD_TRANSMITS,
- DEVCONF_RTR_SOLICITS,
- DEVCONF_RTR_SOLICIT_INTERVAL,
- DEVCONF_RTR_SOLICIT_DELAY,
+  DEVCONF_ACCEPT_REDIRECTS,
+  DEVCONF_AUTOCONF,
+  DEVCONF_DAD_TRANSMITS,
+  DEVCONF_RTR_SOLICITS,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_USE_TEMPADDR,
- DEVCONF_TEMP_VALID_LFT,
- DEVCONF_TEMP_PREFERED_LFT,
- DEVCONF_REGEN_MAX_RETRY,
+  DEVCONF_RTR_SOLICIT_INTERVAL,
+  DEVCONF_RTR_SOLICIT_DELAY,
+  DEVCONF_USE_TEMPADDR,
+  DEVCONF_TEMP_VALID_LFT,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_MAX_DESYNC_FACTOR,
- DEVCONF_MAX_ADDRESSES,
- DEVCONF_FORCE_MLD_VERSION,
- DEVCONF_ACCEPT_RA_DEFRTR,
+  DEVCONF_TEMP_PREFERED_LFT,
+  DEVCONF_REGEN_MAX_RETRY,
+  DEVCONF_MAX_DESYNC_FACTOR,
+  DEVCONF_MAX_ADDRESSES,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_ACCEPT_RA_PINFO,
- DEVCONF_ACCEPT_RA_RTR_PREF,
- DEVCONF_RTR_PROBE_INTERVAL,
- DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
+  DEVCONF_FORCE_MLD_VERSION,
+  DEVCONF_ACCEPT_RA_DEFRTR,
+  DEVCONF_ACCEPT_RA_PINFO,
+  DEVCONF_ACCEPT_RA_RTR_PREF,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_PROXY_NDP,
- DEVCONF_OPTIMISTIC_DAD,
- DEVCONF_ACCEPT_SOURCE_ROUTE,
- DEVCONF_MC_FORWARDING,
+  DEVCONF_RTR_PROBE_INTERVAL,
+  DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
+  DEVCONF_PROXY_NDP,
+  DEVCONF_OPTIMISTIC_DAD,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_DISABLE_IPV6,
- DEVCONF_ACCEPT_DAD,
- DEVCONF_FORCE_TLLAO,
- DEVCONF_NDISC_NOTIFY,
+  DEVCONF_ACCEPT_SOURCE_ROUTE,
+  DEVCONF_MC_FORWARDING,
+  DEVCONF_DISABLE_IPV6,
+  DEVCONF_ACCEPT_DAD,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
- DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
- DEVCONF_SUPPRESS_FRAG_NDISC,
- DEVCONF_ACCEPT_RA_FROM_LOCAL,
+  DEVCONF_FORCE_TLLAO,
+  DEVCONF_NDISC_NOTIFY,
+  DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
+  DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- DEVCONF_MAX
+  DEVCONF_SUPPRESS_FRAG_NDISC,
+  DEVCONF_ACCEPT_RA_FROM_LOCAL,
+  DEVCONF_MAX
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif