+++ /dev/null
-/*
- *------------------------------------------------------------------
- * lex.c - API generator lexical analyzer
- *
- * Copyright (c) 1996-2009 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *------------------------------------------------------------------
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <time.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include "lex.h"
-#include "node.h"
-#include "tools/vppapigen/gram.h"
-#include <vppinfra/clib.h>
-#include <vppinfra/fifo.h>
-#include <vppinfra/format.h>
-
-FILE *ifp, *ofp, *pythonfp, *jsonfp;
-char *vlib_app_name = "vpp";
-int dump_tree;
-time_t starttime;
-char *input_filename;
-char *current_filename;
-int current_filename_allocated;
-unsigned long input_crc;
-unsigned long message_crc;
-int yydebug;
-char *push_input_fifo;
-char saved_ungetc_char;
-char have_ungetc_char;
-
-/*
- * lexer variable definitions
- */
-
-static const char *version = "0.1";
-static int the_lexer_linenumber = 1;
-static enum lex_state the_lexer_state = START_STATE;
-
-/*
- * private prototypes
- */
-static void usage (char *);
-static int name_check (const char *, YYSTYPE *);
-static int name_compare (const char *, const char *);
-extern int yydebug;
-extern YYSTYPE yylval;
-
-unsigned int crc32c_table[256] = {
- 0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4,
- 0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB,
- 0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B,
- 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24,
- 0x105EC76F, 0xE235446C, 0xF165B798, 0x030E349B,
- 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384,
- 0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54,
- 0x5D1D08BF, 0xAF768BBC, 0xBC267848, 0x4E4DFB4B,
- 0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A,
- 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35,
- 0xAA64D611, 0x580F5512, 0x4B5FA6E6, 0xB93425E5,
- 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA,
- 0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45,
- 0xF779DEAE, 0x05125DAD, 0x1642AE59, 0xE4292D5A,
- 0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A,
- 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595,
- 0x417B1DBC, 0xB3109EBF, 0xA0406D4B, 0x522BEE48,
- 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957,
- 0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687,
- 0x0C38D26C, 0xFE53516F, 0xED03A29B, 0x1F682198,
- 0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927,
- 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38,
- 0xDBFC821C, 0x2997011F, 0x3AC7F2EB, 0xC8AC71E8,
- 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7,
- 0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096,
- 0xA65C047D, 0x5437877E, 0x4767748A, 0xB50CF789,
- 0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859,
- 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46,
- 0x7198540D, 0x83F3D70E, 0x90A324FA, 0x62C8A7F9,
- 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6,
- 0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36,
- 0x3CDB9BDD, 0xCEB018DE, 0xDDE0EB2A, 0x2F8B6829,
- 0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C,
- 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93,
- 0x082F63B7, 0xFA44E0B4, 0xE9141340, 0x1B7F9043,
- 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C,
- 0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3,
- 0x55326B08, 0xA759E80B, 0xB4091BFF, 0x466298FC,
- 0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C,
- 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033,
- 0xA24BB5A6, 0x502036A5, 0x4370C551, 0xB11B4652,
- 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D,
- 0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D,
- 0xEF087A76, 0x1D63F975, 0x0E330A81, 0xFC588982,
- 0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D,
- 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622,
- 0x38CC2A06, 0xCAA7A905, 0xD9F75AF1, 0x2B9CD9F2,
- 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED,
- 0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530,
- 0x0417B1DB, 0xF67C32D8, 0xE52CC12C, 0x1747422F,
- 0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF,
- 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0,
- 0xD3D3E1AB, 0x21B862A8, 0x32E8915C, 0xC083125F,
- 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540,
- 0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90,
- 0x9E902E7B, 0x6CFBAD78, 0x7FAB5E8C, 0x8DC0DD8F,
- 0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE,
- 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1,
- 0x69E9F0D5, 0x9B8273D6, 0x88D28022, 0x7AB90321,
- 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E,
- 0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81,
- 0x34F4F86A, 0xC69F7B69, 0xD5CF889D, 0x27A40B9E,
- 0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E,
- 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351
-};
-
-static inline unsigned long CRC8 (unsigned long crc,
- unsigned char d)
-{
- return ((crc >> 8) ^ crc32c_table[(crc ^ d) & 0xFF]);
-}
-static inline unsigned long CRC16 (unsigned long crc,
- unsigned short d)
-{
- crc = CRC8 (crc, d & 0xff);
- d = d >> 8;
- crc = CRC8 (crc, d & 0xff);
- return crc;
-}
-
-
-static unsigned long
-crc_eliding_c_comments (const char *buf, unsigned long crc)
-{
- const char *p;
- enum { cOTHER, /* */
- cSTRING, /* "... */
- cSBACKSLASH, /* "...\ */
- cCHAR, /* '... */
- cCBACKSLASH, /* '...\ */
- cSLASH, /* / */
- cSLASH_SLASH, /* //... */
- cSLASH_STAR, /* / *... */
- cSTAR /* / *...* */
- } ss = cOTHER;
-
- for (p = buf; ;) {
- unsigned char c = *p++;
-
- switch (c) {
- case 0:
- switch (ss) {
- case cOTHER:
- return (crc);
- case cSTRING: case cSBACKSLASH:
- case cCHAR: case cCBACKSLASH:
- case cSLASH: case cSLASH_SLASH: case cSLASH_STAR: case cSTAR:
- fprintf (stderr, "Inopportune EOF: %s\n", buf);
- exit (1);
- }
- break;
- case '\"':
- switch (ss) {
- case cOTHER: ss = cSTRING; break; /* start string */
- case cSTRING: ss = cOTHER; break; /* end string */
- case cSBACKSLASH: ss = cSTRING; break;
- case cCHAR: break;
- case cCBACKSLASH: ss = cCHAR; break;
- case cSLASH: crc = CRC8 (crc, '/'); ss = cOTHER; break;
- case cSLASH_SLASH: continue; /* in comment */
- case cSLASH_STAR: continue; /* in comment */
- case cSTAR: ss = cSLASH_STAR; continue; /* in comment */
- }
- break;
- case '\\':
- switch (ss) {
- case cOTHER: break;
- case cSTRING: ss = cSBACKSLASH; break;
- case cSBACKSLASH: ss = cSTRING; break;
- case cCHAR: ss = cCBACKSLASH; break;
- case cCBACKSLASH: ss = cCHAR; break;
- case cSLASH: crc = CRC8 (crc, '/'); ; ss = cOTHER; break;
- case cSLASH_SLASH: continue; /* in comment */
- case cSLASH_STAR: continue; /* in comment */
- case cSTAR: ss = cSLASH_STAR; continue; /* in comment */
- }
- break;
- case '/':
- switch (ss) {
- case cOTHER: ss = cSLASH; continue; /* potential comment */
- case cSTRING: break;
- case cSBACKSLASH: ss = cSTRING; break;
- case cCHAR: break;
- case cCBACKSLASH: ss = cCHAR; break;
- case cSLASH: ss = cSLASH_SLASH; continue; /* start comment */
- case cSLASH_SLASH: continue; /* in comment */
- case cSLASH_STAR: continue; /* in comment */
- case cSTAR: ss = cOTHER; continue; /* end of comment */
- }
- break;
- case '*':
- switch (ss) {
- case cOTHER: break;
- case cSTRING: break;
- case cSBACKSLASH: ss = cSTRING; break;
- case cCHAR: break;
- case cCBACKSLASH: ss = cCHAR; break;
- case cSLASH: ss = cSLASH_STAR; continue; /* start comment */
- case cSLASH_SLASH: continue; /* in comment */
- case cSLASH_STAR: ss = cSTAR; continue; /* potential end */
- case cSTAR: continue; /* still potential end of comment */
- }
- break;
- case '\n': case '\r': case ' ': case '\t': case '\014':
- switch (ss) {
- case cOTHER: continue; /* ignore all whitespace */
- case cSTRING: break;
- case cSBACKSLASH: ss = cSTRING; break;
- case cCHAR: break;
- case cCBACKSLASH: ss = cCHAR; break;
- case cSLASH: c = '/'; ss = cOTHER; break;
- case cSLASH_SLASH:
- if (c == '\n' || c == '\r') ss = cOTHER; /* end comment */
- continue;
- case cSLASH_STAR: continue; /* in comment */
- case cSTAR: ss = cSLASH_STAR; continue; /* in comment */
- }
- default:
- switch (ss) {
- case cOTHER: break;
- case cSTRING: break;
- case cSBACKSLASH: ss = cSTRING; break;
- case cCHAR: break;
- case cCBACKSLASH: ss = cCHAR; break;
- case cSLASH: crc = CRC8 (crc, '/'); ss = cOTHER; break;
- case cSLASH_SLASH: continue; /* in comment */
- case cSLASH_STAR: continue; /* in comment */
- case cSTAR: ss = cSLASH_STAR; continue; /* in comment */
- }
- }
- crc = CRC8 (crc, c);
- }
-}
-
-/*
- * main
- */
-int main (int argc, char **argv)
-{
- int curarg = 1;
- char *ofile=0;
- char *pythonfile=0;
- char *jsonfile=0;
- char *show_name=0;
-
- while (curarg < argc) {
- if (!strncmp (argv [curarg], "--verbose", 3)) {
- fprintf (stderr, "%s version %s\n", argv [0], version);
- curarg++;
- continue;
- }
-
- if (!strncmp (argv [curarg], "--yydebug", 3)) {
- yydebug = 1;
- curarg++;
- continue;
- }
-
- if (!strncmp (argv [curarg], "--dump", 3)) {
- dump_tree = 1;
- curarg++;
- continue;
- }
-
- if (!strncmp (argv[curarg], "--show-name", 3)) {
- curarg++;
- if (curarg < argc) {
- show_name = argv[curarg];
- curarg++;
- continue;
- } else {
- fprintf(stderr, "Missing filename after --show-name \n");
- exit(1);
- }
- }
-
- if (!strncmp (argv [curarg], "--input", 3)) {
- curarg++;
- if (curarg < argc) {
- input_filename = argv[curarg];
- if (!strcmp (argv [curarg], "-"))
- ifp = stdin;
- else
- ifp = fopen (argv [curarg], "r");
- if (ifp == NULL) {
- fprintf (stderr, "Couldn't open input file %s\n",
- argv[curarg]);
- exit (1);
- }
- curarg++;
- } else {
- fprintf(stderr, "Missing filename after --input\n");
- exit(1);
- }
- continue;
- }
- if (!strncmp (argv [curarg], "--output", 3)) {
- curarg++;
- if (curarg < argc) {
- ofp = fopen (argv[curarg], "w");
- if (ofp == NULL) {
- fprintf (stderr, "Couldn't open output file %s\n",
- argv[curarg]);
- exit (1);
- }
- ofile = argv[curarg];
- curarg++;
- } else {
- fprintf(stderr, "Missing filename after --output\n");
- exit(1);
- }
- continue;
- }
- if (!strncmp (argv [curarg], "--python", 8)) {
- curarg++;
- if (curarg < argc) {
- if (!strcmp(argv[curarg], "-")) {
- pythonfp = stdout;
- } else {
- pythonfp = fopen(argv[curarg], "w");
- pythonfile = argv[curarg];
- }
- if (pythonfp == NULL) {
- fprintf (stderr, "Couldn't open python output file %s\n",
- argv[curarg]);
- exit (1);
- }
- curarg++;
- } else {
- fprintf(stderr, "Missing filename after --python\n");
- exit(1);
- }
- continue;
- }
- if (!strncmp (argv [curarg], "--json", 6)) {
- curarg++;
- if (curarg < argc) {
- if (!strcmp(argv[curarg], "-")) {
- jsonfp = stdout;
- } else {
- jsonfp = fopen(argv[curarg], "w");
- jsonfile = argv[curarg];
- }
- if (jsonfp == NULL) {
- fprintf (stderr, "Couldn't open JSON output file %s\n",
- argv[curarg]);
- exit (1);
- }
- curarg++;
- } else {
- fprintf(stderr, "Missing filename after --json\n");
- exit(1);
- }
- continue;
- }
- if (!strncmp (argv [curarg], "--app", 4)) {
- curarg++;
- if (curarg < argc) {
- vlib_app_name = argv[curarg];
- curarg++;
- } else {
- fprintf(stderr, "Missing app name after --app\n");
- exit(1);
- }
- continue;
- }
-
- usage(argv[0]);
- exit (1);
- }
- if (ofp == NULL) {
- ofile = 0;
- }
- if (pythonfp == NULL) {
- pythonfile = 0;
- }
- if (jsonfp == NULL) {
- jsonfile = 0;
- }
- if (ifp == NULL) {
- fprintf(stderr, "No input file specified...\n");
- exit(1);
- }
- if (show_name) {
- input_filename = show_name;
- }
-
- starttime = time (0);
-
- if (yyparse() == 0) {
- fclose (ifp);
- curarg -= 2;
- if (ofile) {
- printf ("Output written to %s\n", ofile);
- fclose (ofp);
- }
- if (pythonfile) {
- printf ("Python bindings written to %s\n", pythonfile);
- fclose (pythonfp);
- }
- if (jsonfile) {
- printf ("JSON bindings written to %s\n", jsonfile);
- fclose (jsonfp);
- }
- }
- else {
- fclose (ifp);
- if (ofp)
- fclose (ofp);
- if (ofile) {
- printf ("Removing %s\n", ofile);
- unlink (ofile);
- }
- if (pythonfile) {
- printf ("Removing %s\n", pythonfile);
- unlink (pythonfile);
- }
- if (jsonfile) {
- printf ("Removing %s\n", jsonfile);
- unlink (jsonfile);
- }
- exit (1);
- }
- exit (0);
-}
-
-/*
- * usage
- */
-static void usage (char *progname)
-{
- fprintf (stderr,
- "usage: %s --input <filename> [--output <filename>] "
- "[--json <filename>] [--python <filename>]\n%s",
- progname,
- " [--yydebug] [--dump-tree]\n");
- exit (1);
-}
-
-/*
- * yyerror
- */
-void yyerror (char *s)
-{
- fprintf (stderr, "%s:%d %s\n", current_filename, the_lexer_linenumber, s);
-}
-
-static char namebuf [MAXNAME];
-
-static inline char
-getc_char (FILE *ifp)
-{
- char rv;
-
- if (have_ungetc_char) {
- have_ungetc_char = 0;
- return saved_ungetc_char;
- }
-
- if (clib_fifo_elts (push_input_fifo)) {
- clib_fifo_sub1(push_input_fifo, rv);
- return (rv & 0x7f);
- }
- return ((char)(getc(ifp) & 0x7f));
-}
-
-u32 fe (char *fifo)
-{
- return clib_fifo_elts (fifo);
-}
-
-static inline void
-ungetc_char (char c, FILE *ifp)
-{
- saved_ungetc_char = c;
- have_ungetc_char = 1;
-}
-
-void autoreply (void *np_arg)
-{
- static u8 *s;
- node_t *np = (node_t *)np_arg;
- int i;
-
- vec_reset_length (s);
-
- s = format (0, " define %s_reply\n", (char *)(np->data[0]));
- s = format (s, "{\n");
- s = format (s, " u32 context;\n");
- s = format (s, " i32 retval;\n");
- s = format (s, "};\n");
-
- for (i = 0; i < vec_len (s); i++)
- clib_fifo_add1 (push_input_fifo, s[i]);
-}
-
-/*
- * yylex (well, yylex_1: The real yylex below does crc-hackery)
- */
-static int yylex_1 (void)
-{
- int nameidx=0;
- char c;
- enum { LP_INITIAL_WHITESPACE, LP_LINE_NUMBER,
- LP_PRE_FILENAME_WHITESPACE, LP_FILENAME,
- LP_POST_FILENAME,
- LP_OTHER
- } lp_substate = LP_INITIAL_WHITESPACE;
-
- again:
- switch (the_lexer_state) {
- /*
- * START state -- looking for something interesting
- */
- case START_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
-
- switch (c) {
- case '\n':
- the_lexer_linenumber++;
- goto again;
-
- case '#':
- the_lexer_state = LINE_PRAGMA_STATE;
- lp_substate = LP_INITIAL_WHITESPACE;
- goto again;
-
- /* FALLTHROUGH */
- case '\t':
- case ' ':
- goto again;
-
- case '(':
- return (LPAR);
-
- case ')':
- return (RPAR);
-
- case ';':
- return (SEMI);
-
- case '[':
- return (LBRACK);
-
- case ']':
- return (RBRACK);
-
- case '{':
- return (LCURLY);
-
- case '}':
- return (RCURLY);
-
- case ',':
- return (COMMA);
-
- case '.':
- return (DOT);
-
- case '"':
- nameidx = 0;
- the_lexer_state = STRING_STATE;
- goto again;
-
- case '@':
- nameidx = 0;
- the_lexer_state = HELPER_STATE;
- goto again;
-
- case '/':
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
-
- if (c == '/') {
- the_lexer_state = CPP_COMMENT_STATE;
- goto again;
- } else if (c == '*') {
- the_lexer_state = C_COMMENT_STATE;
- goto again;
- } else {
- fprintf (stderr, "unknown token /%c at line %d\n",
- c, the_lexer_linenumber);
- return (BARF);
- }
-
- case '\\':
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
-
- /* Note fallthrough... */
-
- default:
- if (isalpha (c) || c == '_') {
- namebuf [0] = c;
- nameidx = 1;
- the_lexer_state = NAME_STATE;
- goto again;
- } else if (isdigit(c)) {
- namebuf [0] = c;
- nameidx = 1;
- the_lexer_state = NUMBER_STATE;
- goto again;
- }
-
- fprintf (stderr, "unknown token %c at line %d\n",
- c, the_lexer_linenumber);
- return (BARF);
- }
-
- /*
- * NAME state -- eat the rest of a name
- */
- case NAME_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
-
- if (!isalnum (c) && c != '_') {
- ungetc_char (c, ifp);
- namebuf [nameidx] = 0;
- the_lexer_state = START_STATE;
- return (name_check (namebuf, &yylval));
- }
- if (nameidx >= (MAXNAME-1)) {
- fprintf(stderr, "lex input buffer overflow...\n");
- exit(1);
- }
- namebuf [nameidx++] = c;
- goto again;
-
- /*
- * NUMBER state -- eat the rest of a number
- */
- case NUMBER_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
-
- if (!isdigit (c)) {
- ungetc_char (c, ifp);
- namebuf [nameidx] = 0;
- the_lexer_state = START_STATE;
- yylval = (void *) atol(namebuf);
- return (NUMBER);
- }
- if (nameidx >= (MAXNAME-1)) {
- fprintf(stderr, "lex input buffer overflow...\n");
- exit(1);
- }
- namebuf [nameidx++] = c;
- goto again;
-
- /*
- * C_COMMENT state -- eat a peach
- */
- case C_COMMENT_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- if (c == '*') {
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- if (c == '/') {
- the_lexer_state = START_STATE;
- goto again;
- }
- }
- if (c == '\n')
- the_lexer_linenumber++;
- goto again;
-
- /*
- * CPP_COMMENT state -- eat a plum
- */
-
- case CPP_COMMENT_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- if (c == '\n') {
- the_lexer_linenumber++;
- the_lexer_state = START_STATE;
- goto again;
- }
- goto again;
-
- case STRING_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- switch (c) {
- case '\\':
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- namebuf[nameidx++] = c;
- goto again;
-
- case '"':
- namebuf[nameidx] = 0;
- yylval = (YYSTYPE) sxerox (namebuf);
- the_lexer_state = START_STATE;
- return (STRING);
-
- default:
- if (c == '\n')
- the_lexer_linenumber++;
-
- if (nameidx >= (MAXNAME-1)) {
- fprintf(stderr, "lex input buffer overflow...\n");
- exit(1);
- }
- namebuf[nameidx++] = c;
- goto again;
- }
- break;
-
- case HELPER_STATE:
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- switch (c) {
- case '\\':
- c = getc_char (ifp);
- if (feof (ifp))
- return (EOF);
- namebuf[nameidx] = c;
- goto again;
-
- case '@':
- namebuf[nameidx] = 0;
- yylval = (YYSTYPE) sxerox (namebuf);
- the_lexer_state = START_STATE;
- return (HELPER_STRING);
-
- default:
- if (c == '\n')
- the_lexer_linenumber++;
-
- /*
- * CPP makes it approximately impossible to
- * type "#define FOO 123", so we provide a
- * lexical trick to achieve that result
- */
-
- if (c == '$')
- c = '#';
-
- if (nameidx >= (MAXNAME-1)) {
- fprintf(stderr, "lex input buffer overflow...\n");
- exit(1);
- }
- namebuf[nameidx++] = c;
- goto again;
- }
- break;
-
- case LINE_PRAGMA_STATE:
- /* We're only interested in lines of the form # 259 "foo.c" 17 */
-
- switch (lp_substate) {
-
- case LP_INITIAL_WHITESPACE: /* no number seen yet */
- c = getc_char(ifp);
- if (feof(ifp))
- return(EOF);
- if (c >= '0' && c <= '9') {
- namebuf[nameidx++] = c;
- lp_substate = LP_LINE_NUMBER;
- } else if (c == '\n') {
- goto lp_end_of_line;
- } else if (c != ' ' && c != '\t') {
- /* Nothing */
- } else {
- lp_substate = LP_OTHER;
- }
- goto again;
-
- case LP_LINE_NUMBER: /* eating linenumber */
- c = getc_char(ifp);
- if (feof(ifp))
- return(EOF);
- if (c >= '0' && c <= '9') {
- namebuf[nameidx++] = c;
- } else if (c == ' ' || c == '\t') {
- namebuf[nameidx++] = 0;
- the_lexer_linenumber = atol(namebuf);
- lp_substate = LP_PRE_FILENAME_WHITESPACE;
- } else if (c == '\n') {
- goto lp_end_of_line;
- } else {
- lp_substate = LP_OTHER;
- }
- goto again;
-
- case LP_PRE_FILENAME_WHITESPACE: /* awaiting filename */
- c = getc_char(ifp);
- if (feof(ifp))
- return(EOF);
-
- if (c == '"') {
- lp_substate = LP_FILENAME;
- nameidx = 0;
- } else if (c == ' ' || c == '\t') {
- /* nothing */
- } else if (c == '\n') {
- goto lp_end_of_line;
- } else {
- lp_substate = LP_OTHER;
- }
- goto again;
-
- case LP_FILENAME: /* eating filename */
- c = getc_char(ifp);
- if (feof(ifp))
- return(EOF);
-
- if (c == '"') {
- lp_substate = LP_POST_FILENAME;
- namebuf[nameidx] = 0;
- } else if (c == '\n') {
- goto lp_end_of_line; /* syntax error... */
- } else {
- namebuf[nameidx++] = c;
- }
- goto again;
-
- case LP_POST_FILENAME: /* ignoring rest of line */
- case LP_OTHER:
- c = getc_char(ifp);
- if (feof(ifp))
- return(EOF);
-
- if (c == '\n') {
- if (lp_substate == LP_POST_FILENAME) {
- if (current_filename_allocated) {
- current_filename_allocated = 0;
- free(current_filename);
- }
-
- if (!strcmp(namebuf, "<stdin>")) {
- current_filename = input_filename;
- } else {
- current_filename = sxerox(namebuf);
- current_filename_allocated = 1;
- }
- }
- lp_end_of_line:
- the_lexer_state = START_STATE;
- nameidx = 0;
- }
- goto again;
- }
- break;
- }
- fprintf (stderr, "LEXER BUG!\n");
- exit (1);
- /* NOTREACHED */
- return (0);
-}
-
-/*
- * Parse a token and side-effect input_crc
- * in a whitespace- and comment-insensitive fashion.
- */
-int yylex (void)
-{
- /*
- * Accumulate a crc32-based signature while processing the
- * input file. The goal is to come up with a magic number
- * which changes precisely when the original input file changes
- * but which ignores whitespace changes.
- */
- unsigned long crc = input_crc;
- int node_type = yylex_1 ();
- unsigned long crc2 = message_crc;
- int use_helper_string = 0;
- unsigned short code;
-
- switch (node_type) {
- case PRIMTYPE:
- case NAME:
- case NUMBER:
- case STRING:
- case HELPER_STRING:
- use_helper_string = 1;
- break;
-
- /* Other node types have no "substate" */
- /* This code is written in this curious fashion because we
- * want the generated CRC to be independent of the particular
- * values a particular version of lex/bison assigned to various states.
- */
-
- case RPAR: code = 258; break;
- case LPAR: code = 259; break;
- case SEMI: code = 260; break;
- case LBRACK: code = 261; break;
- case RBRACK: code = 262; break;
- case BARF: code = 265; break;
- case TPACKED: code = 266; break;
- case DEFINE: code = 267; break;
- case LCURLY: code = 268; break;
- case RCURLY: code = 269; break;
- case UNION: code = 271; break;
- case COMMA: code = 273; break;
- case NOVERSION: code = 274; break;
- case MANUAL_PRINT: code = 275; break;
- case MANUAL_ENDIAN: code = 276; break;
- case TYPEONLY: code = 278; break;
- case DONT_TRACE: code = 279; break;
- case AUTOREPLY: code = 280; break;
- case DOT: code = 281; break;
- case VL_API_VERSION: code = 282; break;
-
- case EOF: code = ~0; break; /* hysterical compatibility */
-
- default:
- fprintf(stderr, "yylex: node_type %d missing state CRC cookie\n",
- node_type);
- exit(1);
- }
-
- if (use_helper_string)
- {
- /* We know these types accumulated token text into namebuf */
- /* HELPER_STRING may still contain C comments. Argh. */
- crc = crc_eliding_c_comments (namebuf, crc);
- crc2 = crc_eliding_c_comments (namebuf, crc2);
- } else
- {
- crc = CRC16 (crc, code);
- crc2 = CRC16 (crc2, code);
- }
-
- input_crc = crc;
- message_crc = crc2;
- return (node_type);
-}
-
-/*
- * name_check -- see if the name we just ate
- * matches a known keyword. If so, set yylval
- * to a new instance of <subclass of node>, and return PARSER_MACRO
- *
- * Otherwise, set yylval to sxerox (s) and return NAME
- */
-
-static struct keytab {
- char *name;
- enum node_subclass subclass_id;
-} keytab [] =
-/* Keep the table sorted, binary search used below! */
-{
- {"autoreply", NODE_AUTOREPLY},
- {"define", NODE_DEFINE},
- {"dont_trace", NODE_DONT_TRACE},
- {"f64", NODE_F64},
- {"i16", NODE_I16},
- {"i32", NODE_I32},
- {"i64", NODE_I64},
- {"i8", NODE_I8},
- {"manual_endian", NODE_MANUAL_ENDIAN},
- {"manual_print", NODE_MANUAL_PRINT},
- {"noversion", NODE_NOVERSION},
- {"packed", NODE_PACKED},
- {"typeonly", NODE_TYPEONLY},
- {"u16", NODE_U16},
- {"u32", NODE_U32},
- {"u64", NODE_U64},
- {"u8", NODE_U8},
- {"union", NODE_UNION},
- {"uword", NODE_UWORD},
- {"vl_api_version", NODE_VERSION},
-};
-
-static int name_check (const char *s, YYSTYPE *token_value)
-{
- enum node_subclass subclass_id;
- int top, bot, mid;
- int result;
-
- for (top = 0, bot = (sizeof(keytab) / sizeof(struct keytab))-1;
- bot >= top; ) {
- mid = (top + bot) / 2;
- result = name_compare (s, keytab[mid].name);
- if (result < 0)
- bot = mid - 1;
- else if (result > 0)
- top = mid + 1;
- else {
- subclass_id = keytab[mid].subclass_id;
-
- switch (subclass_id) {
- case NODE_U8:
- case NODE_U16:
- case NODE_U32:
- case NODE_U64:
- case NODE_I8:
- case NODE_I16:
- case NODE_I32:
- case NODE_I64:
- case NODE_F64:
- case NODE_UWORD:
- *token_value = make_node(subclass_id);
- return (PRIMTYPE);
-
- case NODE_PACKED:
- *token_value = make_node(subclass_id);
- return (TPACKED);
-
- case NODE_DEFINE:
- message_crc = 0;
- *token_value = make_node(subclass_id);
- return(DEFINE);
-
- case NODE_MANUAL_PRINT:
- *token_value = (YYSTYPE) NODE_FLAG_MANUAL_PRINT;
- return (MANUAL_PRINT);
-
- case NODE_MANUAL_ENDIAN:
- *token_value = (YYSTYPE) NODE_FLAG_MANUAL_ENDIAN;
- return (MANUAL_ENDIAN);
-
- case NODE_TYPEONLY:
- *token_value = (YYSTYPE) NODE_FLAG_TYPEONLY;
- return(TYPEONLY);
-
- case NODE_DONT_TRACE:
- *token_value = (YYSTYPE) NODE_FLAG_DONT_TRACE;
- return(DONT_TRACE);
-
- case NODE_AUTOREPLY:
- *token_value = (YYSTYPE) NODE_FLAG_AUTOREPLY;
- return(AUTOREPLY);
-
- case NODE_NOVERSION:
- return(NOVERSION);
-
- case NODE_VERSION:
- return(VL_API_VERSION);
-
- case NODE_UNION:
- return(UNION);
-
- default:
- fprintf (stderr, "fatal: keytab botch!\n");
- exit (1);
- }
- }
- }
- *token_value = (YYSTYPE) sxerox (s);
- return (NAME);
-}
-
-/*
- * sxerox
- */
-
-char *sxerox (const char *s)
-{
- int len = strlen (s);
- char *rv;
-
- rv = (char *) malloc (len+1);
- if (rv == 0) {
- fprintf(stderr, "Out of memory...");
- exit (1);
- }
-
- strcpy (rv, s);
- return (rv);
-}
-
-/*
- * name_compare
- */
-
-int name_compare (const char *s1, const char *s2)
-{
- char c1, c2;
-
- while (*s1 && *s2) {
- c1 = *s1++;
- c2 = *s2++;
-
- c1 = tolower (c1);
- c2 = tolower (c2);
- if (c1 < c2)
- return (-1);
- else if (c1 > c2)
- return (1);
- }
- if (*s1 < *s2)
- return (-1);
- else if (*s1 > *s2)
- return (1);
- return (0);
-}
Code Review / vpp.git / blobdiff