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/icmpv6.h b/libc/kernel/uapi/linux/icmpv6.h
index 542eca5..06c66fa 100644
--- a/libc/kernel/uapi/linux/icmpv6.h
+++ b/libc/kernel/uapi/linux/icmpv6.h
@@ -22,143 +22,124 @@
 #include <asm/byteorder.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct icmp6hdr {
- __u8 icmp6_type;
- __u8 icmp6_code;
- __sum16 icmp6_cksum;
+  __u8 icmp6_type;
+  __u8 icmp6_code;
+  __sum16 icmp6_cksum;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- union {
- __be32 un_data32[1];
- __be16 un_data16[2];
- __u8 un_data8[4];
+  union {
+    __be32 un_data32[1];
+    __be16 un_data16[2];
+    __u8 un_data8[4];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct icmpv6_echo {
- __be16 identifier;
- __be16 sequence;
- } u_echo;
+    struct icmpv6_echo {
+      __be16 identifier;
+      __be16 sequence;
+    } u_echo;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct icmpv6_nd_advt {
+    struct icmpv6_nd_advt {
 #ifdef __LITTLE_ENDIAN_BITFIELD
- __u32 reserved:5,
- override:1,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- solicited:1,
- router:1,
- reserved2:24;
+      __u32 reserved : 5, override : 1, solicited : 1, router : 1, reserved2 : 24;
 #elif defined(__BIG_ENDIAN_BITFIELD)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u32 router:1,
- solicited:1,
- override:1,
- reserved:29;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+      __u32 router : 1, solicited : 1, override : 1, reserved : 29;
 #else
 #error "Please fix <asm/byteorder.h>"
 #endif
- } u_nd_advt;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct icmpv6_nd_ra {
- __u8 hop_limit;
+    } u_nd_advt;
+    struct icmpv6_nd_ra {
+      __u8 hop_limit;
 #ifdef __LITTLE_ENDIAN_BITFIELD
- __u8 reserved:3,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- router_pref:2,
- home_agent:1,
- other:1,
- managed:1;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+      __u8 reserved : 3, router_pref : 2, home_agent : 1, other : 1, managed : 1;
 #elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 managed:1,
- other:1,
- home_agent:1,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- router_pref:2,
- reserved:3;
+      __u8 managed : 1, other : 1, home_agent : 1, router_pref : 2, reserved : 3;
 #else
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #error "Please fix <asm/byteorder.h>"
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
- __be16 rt_lifetime;
- } u_nd_ra;
- } icmp6_dataun;
+      __be16 rt_lifetime;
+    } u_nd_ra;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  } icmp6_dataun;
 #define icmp6_identifier icmp6_dataun.u_echo.identifier
 #define icmp6_sequence icmp6_dataun.u_echo.sequence
 #define icmp6_pointer icmp6_dataun.un_data32[0]
-#define icmp6_mtu icmp6_dataun.un_data32[0]
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_mtu icmp6_dataun.un_data32[0]
 #define icmp6_unused icmp6_dataun.un_data32[0]
 #define icmp6_maxdelay icmp6_dataun.un_data16[0]
 #define icmp6_router icmp6_dataun.u_nd_advt.router
-#define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
 #define icmp6_override icmp6_dataun.u_nd_advt.override
 #define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
 #define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit
-#define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
 #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
-};
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 #define ICMPV6_ROUTER_PREF_LOW 0x3
 #define ICMPV6_ROUTER_PREF_MEDIUM 0x0
 #define ICMPV6_ROUTER_PREF_HIGH 0x1
-#define ICMPV6_ROUTER_PREF_INVALID 0x2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_ROUTER_PREF_INVALID 0x2
 #define ICMPV6_DEST_UNREACH 1
 #define ICMPV6_PKT_TOOBIG 2
 #define ICMPV6_TIME_EXCEED 3
-#define ICMPV6_PARAMPROB 4
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_PARAMPROB 4
 #define ICMPV6_INFOMSG_MASK 0x80
 #define ICMPV6_ECHO_REQUEST 128
 #define ICMPV6_ECHO_REPLY 129
-#define ICMPV6_MGM_QUERY 130
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_MGM_QUERY 130
 #define ICMPV6_MGM_REPORT 131
 #define ICMPV6_MGM_REDUCTION 132
 #define ICMPV6_NI_QUERY 139
-#define ICMPV6_NI_REPLY 140
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_NI_REPLY 140
 #define ICMPV6_MLD2_REPORT 143
 #define ICMPV6_DHAAD_REQUEST 144
 #define ICMPV6_DHAAD_REPLY 145
-#define ICMPV6_MOBILE_PREFIX_SOL 146
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_MOBILE_PREFIX_SOL 146
 #define ICMPV6_MOBILE_PREFIX_ADV 147
 #define ICMPV6_NOROUTE 0
 #define ICMPV6_ADM_PROHIBITED 1
-#define ICMPV6_NOT_NEIGHBOUR 2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_NOT_NEIGHBOUR 2
 #define ICMPV6_ADDR_UNREACH 3
 #define ICMPV6_PORT_UNREACH 4
 #define ICMPV6_POLICY_FAIL 5
-#define ICMPV6_REJECT_ROUTE 6
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_REJECT_ROUTE 6
 #define ICMPV6_EXC_HOPLIMIT 0
 #define ICMPV6_EXC_FRAGTIME 1
 #define ICMPV6_HDR_FIELD 0
-#define ICMPV6_UNK_NEXTHDR 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_UNK_NEXTHDR 1
 #define ICMPV6_UNK_OPTION 2
 #define ICMPV6_FILTER 1
 #define ICMPV6_FILTER_BLOCK 1
-#define ICMPV6_FILTER_PASS 2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_FILTER_PASS 2
 #define ICMPV6_FILTER_BLOCKOTHERS 3
 #define ICMPV6_FILTER_PASSONLY 4
 struct icmp6_filter {
- __u32 data[8];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 data[8];
 };
 #define MLD2_MODE_IS_INCLUDE 1
 #define MLD2_MODE_IS_EXCLUDE 2
-#define MLD2_CHANGE_TO_INCLUDE 3
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MLD2_CHANGE_TO_INCLUDE 3
 #define MLD2_CHANGE_TO_EXCLUDE 4
 #define MLD2_ALLOW_NEW_SOURCES 5
 #define MLD2_BLOCK_OLD_SOURCES 6
-#define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MLD2_ALL_MCR_INIT { { { 0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x16 } } }
 #endif