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/if_pppox.h b/libc/kernel/uapi/linux/if_pppox.h
index 3bc2ddb..7b4dbd2 100644
--- a/libc/kernel/uapi/linux/if_pppox.h
+++ b/libc/kernel/uapi/linux/if_pppox.h
@@ -32,14 +32,14 @@
 typedef __be16 sid_t;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct pppoe_addr {
- sid_t sid;
- unsigned char remote[ETH_ALEN];
- char dev[IFNAMSIZ];
+  sid_t sid;
+  unsigned char remote[ETH_ALEN];
+  char dev[IFNAMSIZ];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct pptp_addr {
- __u16 call_id;
- struct in_addr sin_addr;
+  __u16 call_id;
+  struct in_addr sin_addr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #define PX_PROTO_OE 0
@@ -48,42 +48,42 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PX_MAX_PROTO 3
 struct sockaddr_pppox {
- __kernel_sa_family_t sa_family;
- unsigned int sa_protocol;
+  __kernel_sa_family_t sa_family;
+  unsigned int sa_protocol;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- union {
- struct pppoe_addr pppoe;
- struct pptp_addr pptp;
- } sa_addr;
+  union {
+    struct pppoe_addr pppoe;
+    struct pptp_addr pptp;
+  } sa_addr;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } __packed;
 struct sockaddr_pppol2tp {
- __kernel_sa_family_t sa_family;
- unsigned int sa_protocol;
+  __kernel_sa_family_t sa_family;
+  unsigned int sa_protocol;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct pppol2tp_addr pppol2tp;
+  struct pppol2tp_addr pppol2tp;
 } __packed;
 struct sockaddr_pppol2tpin6 {
- __kernel_sa_family_t sa_family;
+  __kernel_sa_family_t sa_family;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned int sa_protocol;
- struct pppol2tpin6_addr pppol2tp;
+  unsigned int sa_protocol;
+  struct pppol2tpin6_addr pppol2tp;
 } __packed;
 struct sockaddr_pppol2tpv3 {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_sa_family_t sa_family;
- unsigned int sa_protocol;
- struct pppol2tpv3_addr pppol2tp;
+  __kernel_sa_family_t sa_family;
+  unsigned int sa_protocol;
+  struct pppol2tpv3_addr pppol2tp;
 } __packed;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct sockaddr_pppol2tpv3in6 {
- __kernel_sa_family_t sa_family;
- unsigned int sa_protocol;
- struct pppol2tpv3in6_addr pppol2tp;
+  __kernel_sa_family_t sa_family;
+  unsigned int sa_protocol;
+  struct pppol2tpv3in6_addr pppol2tp;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } __packed;
-#define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t)
-#define PPPOEIOCDFWD _IO(0xB1 ,1)
+#define PPPOEIOCSFWD _IOW(0xB1, 0, size_t)
+#define PPPOEIOCDFWD _IO(0xB1, 1)
 #define PADI_CODE 0x09
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PADO_CODE 0x07
@@ -92,11 +92,11 @@
 #define PADT_CODE 0xa7
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct pppoe_tag {
- __be16 tag_type;
- __be16 tag_len;
- char tag_data[0];
+  __be16 tag_type;
+  __be16 tag_len;
+  char tag_data[0];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-} __attribute__ ((packed));
+} __attribute__((packed));
 #define PTT_EOL __cpu_to_be16(0x0000)
 #define PTT_SRV_NAME __cpu_to_be16(0x0101)
 #define PTT_AC_NAME __cpu_to_be16(0x0102)
@@ -112,21 +112,21 @@
 struct pppoe_hdr {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifdef __LITTLE_ENDIAN_BITFIELD
- __u8 type : 4;
- __u8 ver : 4;
+  __u8 type : 4;
+  __u8 ver : 4;
 #elif defined(__BIG_ENDIAN_BITFIELD)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 ver : 4;
- __u8 type : 4;
+  __u8 ver : 4;
+  __u8 type : 4;
 #else
 #error "Please fix <asm/byteorder.h>"
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
- __u8 code;
- __be16 sid;
- __be16 length;
+  __u8 code;
+  __be16 sid;
+  __be16 length;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct pppoe_tag tag[0];
+  struct pppoe_tag tag[0];
 } __packed;
 #define PPPOE_SES_HLEN 8
 #endif