Current File : //usr/share/doc/re2c/examples/c/submatch/parse_records.c
/* Generated by re2c */
// re2c $INPUT -o $OUTPUT -i
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
struct mtag_t
{
int pred;
const char *tag;
};
typedef std::vector<mtag_t> mtagpool_t;
static void mtag(int *pt, const char *t, mtagpool_t *tp) {
mtag_t l = {*pt, t};
*pt = (int) tp->size();
tp->push_back(l);
}
static void print_channels(const mtagpool_t &tp, int x, int y) {
if (x == -1) return;
print_channels(tp, tp[x].pred, tp[y].pred);
const char *px = tp[x].tag, *py = tp[y].tag;
fprintf(stderr, " %.*s\n", (int) (py - px), px);
}
#define YYMTAGP(t) mtag(&t, YYCURSOR, &tp)
#define YYMTAGN(t) mtag(&t, NULL, &tp)
static int lex(const char *YYCURSOR) {
const char *YYMARKER, *n1, *n2, *a1, *a2, *c1, *c2;
mtagpool_t tp;
int h1, h2;
const char *yyt1;const char *yyt2;const char *yyt3;const char *yyt4;const char *yyt5;const char *yyt6;
int yytm7;int yytm8;
for (;;) {
tp.clear();
yytm7 = -1;yytm8 = -1;
{
char yych;
yych = *YYCURSOR;
switch (yych) {
case 0x00: goto yy1;
case '\t':
case ' ': goto yy4;
case '\n': goto yy6;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case '_':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
yyt1 = YYCURSOR;
goto yy7;
default: goto yy2;
}
yy1:
++YYCURSOR;
{ return 0; }
yy2:
++YYCURSOR;
yy3:
{ fprintf(stderr, "error: %s\n", YYCURSOR); return 1; }
yy4:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy4;
default: goto yy5;
}
yy5:
{ continue; }
yy6:
++YYCURSOR;
goto yy5;
yy7:
yych = *(YYMARKER = ++YYCURSOR);
switch (yych) {
case '\t':
case ' ':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case '_':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
case '{': goto yy11;
default: goto yy3;
}
yy8:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy8;
case '{': goto yy12;
default: goto yy9;
}
yy9:
YYCURSOR = YYMARKER;
goto yy3;
yy10:
yych = *++YYCURSOR;
yy11:
switch (yych) {
case '\t':
case ' ':
yyt2 = YYCURSOR;
goto yy8;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case '_':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy10;
case '{':
yyt2 = YYCURSOR;
goto yy12;
default: goto yy9;
}
yy12:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy12;
case '\n': goto yy13;
default: goto yy9;
}
yy13:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy13;
case 'n': goto yy14;
default: goto yy9;
}
yy14:
yych = *++YYCURSOR;
switch (yych) {
case 'a': goto yy15;
default: goto yy9;
}
yy15:
yych = *++YYCURSOR;
switch (yych) {
case 'm': goto yy16;
default: goto yy9;
}
yy16:
yych = *++YYCURSOR;
switch (yych) {
case 'e': goto yy17;
default: goto yy9;
}
yy17:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy17;
case '=': goto yy18;
default: goto yy9;
}
yy18:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy18;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
yyt3 = YYCURSOR;
goto yy19;
default: goto yy9;
}
yy19:
yych = *++YYCURSOR;
switch (yych) {
case '.': goto yy20;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy21;
default: goto yy9;
}
yy20:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ':
yyt4 = YYCURSOR;
goto yy22;
case '\n':
yyt4 = YYCURSOR;
goto yy23;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z': goto yy19;
default: goto yy9;
}
yy21:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ':
yyt4 = YYCURSOR;
goto yy22;
case '\n':
yyt4 = YYCURSOR;
goto yy23;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z': goto yy19;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy21;
default: goto yy9;
}
yy22:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy22;
case '\n': goto yy23;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z': goto yy19;
default: goto yy9;
}
yy23:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy23;
case 'c': goto yy24;
default: goto yy9;
}
yy24:
yych = *++YYCURSOR;
switch (yych) {
case 'o': goto yy25;
default: goto yy9;
}
yy25:
yych = *++YYCURSOR;
switch (yych) {
case 'u': goto yy26;
default: goto yy9;
}
yy26:
yych = *++YYCURSOR;
switch (yych) {
case 'n': goto yy27;
default: goto yy9;
}
yy27:
yych = *++YYCURSOR;
switch (yych) {
case 't': goto yy28;
default: goto yy9;
}
yy28:
yych = *++YYCURSOR;
switch (yych) {
case 'r': goto yy29;
default: goto yy9;
}
yy29:
yych = *++YYCURSOR;
switch (yych) {
case 'y': goto yy30;
default: goto yy9;
}
yy30:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy30;
case '=': goto yy31;
default: goto yy9;
}
yy31:
yych = *++YYCURSOR;
switch (yych) {
case '\t': goto yy31;
case ' ':
yyt5 = YYCURSOR;
goto yy32;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
yyt5 = YYCURSOR;
goto yy33;
default: goto yy9;
}
yy32:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
yyt6 = YYCURSOR;
goto yy34;
case '\n':
yyt6 = YYCURSOR;
goto yy35;
case ' ':
yyt5 = YYCURSOR;
goto yy32;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
yyt5 = YYCURSOR;
goto yy33;
default: goto yy9;
}
yy33:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
yyt6 = YYCURSOR;
goto yy36;
case '\n':
yyt6 = YYCURSOR;
goto yy35;
case ' ':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy33;
default: goto yy9;
}
yy34:
yych = *++YYCURSOR;
switch (yych) {
case '\t': goto yy34;
case '\n': goto yy35;
case ' ':
yyt5 = YYCURSOR;
goto yy32;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case 'H':
case 'I':
case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
case 'Q':
case 'R':
case 'S':
case 'T':
case 'U':
case 'V':
case 'W':
case 'X':
case 'Y':
case 'Z':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
yyt5 = YYCURSOR;
goto yy33;
default: goto yy9;
}
yy35:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy35;
case 'c': goto yy37;
default: goto yy9;
}
yy36:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy36;
case '\n': goto yy35;
default: goto yy9;
}
yy37:
yych = *++YYCURSOR;
switch (yych) {
case 'h': goto yy38;
default: goto yy9;
}
yy38:
yych = *++YYCURSOR;
switch (yych) {
case 'a': goto yy39;
default: goto yy9;
}
yy39:
yych = *++YYCURSOR;
switch (yych) {
case 'n': goto yy40;
default: goto yy9;
}
yy40:
yych = *++YYCURSOR;
switch (yych) {
case 'n': goto yy41;
default: goto yy9;
}
yy41:
yych = *++YYCURSOR;
switch (yych) {
case 'e': goto yy42;
default: goto yy9;
}
yy42:
yych = *++YYCURSOR;
switch (yych) {
case 'l': goto yy43;
default: goto yy9;
}
yy43:
yych = *++YYCURSOR;
switch (yych) {
case 's': goto yy44;
default: goto yy9;
}
yy44:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy44;
case '=': goto yy45;
default: goto yy9;
}
yy45:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy45;
case '\n':
YYMTAGN(yytm8);
YYMTAGN(yytm7);
goto yy46;
case '#':
YYMTAGP(yytm7);
goto yy47;
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
YYMTAGP(yytm7);
goto yy48;
default: goto yy9;
}
yy46:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy46;
case '}': goto yy49;
default: goto yy9;
}
yy47:
yych = *++YYCURSOR;
switch (yych) {
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy50;
default: goto yy9;
}
yy48:
yych = *++YYCURSOR;
switch (yych) {
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy48;
case '/': goto yy51;
default: goto yy9;
}
yy49:
++YYCURSOR;
n1 = yyt1;
n2 = yyt2;
a1 = yyt3;
a2 = yyt4;
c1 = yyt5;
c2 = yyt6;
h1 = yytm7;
h2 = yytm8;
{
fprintf(stderr, "\n%.*s\n", (int) (n2 - n1), n1);
fprintf(stderr, " name: %.*s\n", (int) (a2 - a1), a1);
fprintf(stderr, " country: %.*s\n", (int) (c2 - c1), c1);
fprintf(stderr, " channels:\n");
print_channels(tp, h1, h2);
continue;
}
yy50:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ':
YYMTAGP(yytm8);
goto yy52;
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy50;
case ';':
YYMTAGP(yytm8);
goto yy53;
default: goto yy9;
}
yy51:
yych = *++YYCURSOR;
switch (yych) {
case '#': goto yy47;
default: goto yy9;
}
yy52:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy52;
case ';': goto yy53;
default: goto yy9;
}
yy53:
yych = *++YYCURSOR;
switch (yych) {
case '\t':
case ' ': goto yy53;
case '\n': goto yy46;
case '#':
YYMTAGP(yytm7);
goto yy47;
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z':
YYMTAGP(yytm7);
goto yy48;
default: goto yy9;
}
}
}
}
int main() {
const char *fname = "etc_passwd";
FILE *f;
// prepare input file
f = fopen(fname, "w");
fprintf(f,
"h4cker1970 {\n"
" name = Jon Smith\n"
" country = UK\n"
" channels = freenode/#gentoo-dev; freenode/#gentoo-arch; freenode/#alpha;\n"
"}\n"
"\n"
"mitek {\n"
" name = Mitrofan Rygoravich\n"
" country = Belarus\n"
" channels = bynets/#haskell; freenode/#unix;\n"
"}\n"
"\n");
fclose(f);
// read input file into buffer
f = fopen(fname, "r");
fseek(f, 0, SEEK_END);
const size_t fsize = (size_t) ftell(f);
fseek(f, 0, SEEK_SET);
char *buffer = (char*) malloc(fsize + 1);
fread(buffer, 1, fsize, f);
buffer[fsize] = 0;
fclose(f);
assert(lex(buffer) == 0);
// cleanup
remove(fname);
free(buffer);
return 0;
}
c/submatch/parse_records.re:58:18: warning: rule matches empty string [-Wmatch-empty-string]
c/submatch/parse_records.re:64:16: warning: tag 'a2' has 2nd degree of nondeterminism [-Wnondeterministic-tags]
c/submatch/parse_records.re:64:16: warning: tag 'c1' has 2nd degree of nondeterminism [-Wnondeterministic-tags]
c/submatch/parse_records.re:64:16: warning: tag 'c2' has 2nd degree of nondeterminism [-Wnondeterministic-tags]
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