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// Generated by re2java
// re2java $INPUT -o $OUTPUT
class Main {
static final int YYMAXFILL = 1;
// Expects yymaxfill-padded string.
static int lex(byte[] str) {
// Pad string with yymaxfill zeroes at the end.
byte[] yyinput = new byte[str.length + YYMAXFILL];
System.arraycopy(str, 0, yyinput, 0, str.length);
int yycursor = 0;
int yylimit = yyinput.length;
int count = 0;
loop: while (true) {
{
int yych = 0;
int yystate = 0;
yyl: while (true) {
switch (yystate) {
case 0:
if (yylimit <= yycursor) {
return -1;
}
yych = Byte.toUnsignedInt(yyinput[yycursor]);
yycursor += 1;
switch (yych) {
case 0x00:
yystate = 1;
continue yyl;
case 0x20:
yystate = 3;
continue yyl;
case 0x27:
yystate = 5;
continue yyl;
default:
yystate = 2;
continue yyl;
}
case 1:
{
// Check that it is the sentinel, not some unexpected null.
return (yycursor - 1 == str.length) ? count : -1;
}
case 2:
{ return -1; }
case 3:
if (yylimit <= yycursor) {
return -1;
}
yych = Byte.toUnsignedInt(yyinput[yycursor]);
switch (yych) {
case 0x20:
yycursor += 1;
yystate = 3;
continue yyl;
default:
yystate = 4;
continue yyl;
}
case 4:
{ continue loop; }
case 5:
if (yylimit <= yycursor) {
return -1;
}
yych = Byte.toUnsignedInt(yyinput[yycursor]);
yycursor += 1;
switch (yych) {
case 0x27:
yystate = 6;
continue yyl;
case 0x5C:
yystate = 7;
continue yyl;
default:
yystate = 5;
continue yyl;
}
case 6:
{ count += 1; continue loop; }
case 7:
if (yylimit <= yycursor) {
return -1;
}
yycursor += 1;
yystate = 5;
continue yyl;
default:
throw new IllegalStateException("internal lexer error");
}
}
}
}
}
public static void main(String []args) {
assert lex("".getBytes()) == 0;
assert lex("'qu\0tes' 'are' 'fine: \\'' ".getBytes()) == 3;
assert lex("'unterminated\\'".getBytes()) == -1;
assert lex("'unexpected \00 null\\'".getBytes()) == -1;
}
};
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