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/* Generated by re2c */
// re2c $INPUT -o $OUTPUT --input-encoding utf8 --loop-switch -i
// This example supports multiple input encodings: UTF-8 and UTF-32.
// Both lexers are generated from the same rules block, and the use
// blocks add only encoding-specific configurations.
#include <assert.h>
#include <stdint.h>
static int lex_utf8(const uint8_t *YYCURSOR)
{
const uint8_t *YYMARKER;
{
uint8_t yych;
unsigned int yystate = 0;
for (;;) {
switch (yystate) {
case 0:
yych = *YYCURSOR;
++YYCURSOR;
switch (yych) {
case 0xE2:
yystate = 3;
continue;
default:
yystate = 1;
continue;
}
case 1:
yystate = 2;
continue;
case 2: { return 1; }
case 3:
YYMARKER = YYCURSOR;
yych = *YYCURSOR;
switch (yych) {
case 0x88:
++YYCURSOR;
yystate = 4;
continue;
default:
yystate = 2;
continue;
}
case 4:
yych = *YYCURSOR;
switch (yych) {
case 0x80:
++YYCURSOR;
yystate = 6;
continue;
default:
yystate = 5;
continue;
}
case 5:
YYCURSOR = YYMARKER;
yystate = 2;
continue;
case 6:
yych = *YYCURSOR;
switch (yych) {
case 'x':
++YYCURSOR;
yystate = 7;
continue;
default:
yystate = 5;
continue;
}
case 7:
yych = *YYCURSOR;
switch (yych) {
case ' ':
++YYCURSOR;
yystate = 8;
continue;
default:
yystate = 5;
continue;
}
case 8:
yych = *YYCURSOR;
switch (yych) {
case 0xE2:
++YYCURSOR;
yystate = 9;
continue;
default:
yystate = 5;
continue;
}
case 9:
yych = *YYCURSOR;
switch (yych) {
case 0x88:
++YYCURSOR;
yystate = 10;
continue;
default:
yystate = 5;
continue;
}
case 10:
yych = *YYCURSOR;
switch (yych) {
case 0x83:
++YYCURSOR;
yystate = 11;
continue;
default:
yystate = 5;
continue;
}
case 11:
yych = *YYCURSOR;
switch (yych) {
case 'y':
++YYCURSOR;
yystate = 12;
continue;
default:
yystate = 5;
continue;
}
case 12: { return 0; }
}
}
}
}
static int lex_utf32(const uint32_t *YYCURSOR)
{
const uint32_t *YYMARKER;
{
uint32_t yych;
unsigned int yystate = 0;
for (;;) {
switch (yystate) {
case 0:
yych = *YYCURSOR;
++YYCURSOR;
if (yych == 0x00002200) {
yystate = 2;
continue;
}
yystate = 1;
continue;
case 1: { return 1; }
case 2:
YYMARKER = YYCURSOR;
yych = *YYCURSOR;
if (yych != 'x') {
yystate = 1;
continue;
}
++YYCURSOR;
yych = *YYCURSOR;
if (yych == ' ') {
++YYCURSOR;
yystate = 4;
continue;
}
yystate = 3;
continue;
case 3:
YYCURSOR = YYMARKER;
yystate = 1;
continue;
case 4:
yych = *YYCURSOR;
if (yych != 0x00002203) {
yystate = 3;
continue;
}
++YYCURSOR;
yych = *YYCURSOR;
if (yych != 'y') {
yystate = 3;
continue;
}
++YYCURSOR;
{ return 0; }
}
}
}
}
int main()
{
static const uint8_t s8[] = // UTF-8
{ 0xe2, 0x88, 0x80, 0x78, 0x20, 0xe2, 0x88, 0x83, 0x79 };
static const uint32_t s32[] = // UTF32
{ 0x00002200, 0x00000078, 0x00000020, 0x00002203, 0x00000079 };
assert(lex_utf8(s8) == 0);
assert(lex_utf32(s32) == 0);
return 0;
}
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