@Test
public void shouldParseItemAndDiscardSpaces() {
Parser parser = Parsers.token(Parsers.integer());
assertThat(parser.parse("1 \t\n"), is(equalTo(Parser.result(1L, ""))));
assertThat(parser.parse("1"), is(equalTo(Parser.result(1L, ""))));
assertThat(parser.parse(""), is(equalTo(Parser.error("Can not parse item"))));
}
private CoderResult encodeArrayLoop(CharBuffer src, ByteBuffer dst) {
char[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
byte[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
int dlASCII = dp + Math.min(sl - sp, dl - dp);
// ASCII only loop
while (dp < dlASCII && sa[sp] < '\u0080') da[dp++] = (byte) sa[sp++];
while (sp < sl) {
char c = sa[sp];
if (c < 0x80) {
// Have at most seven bits
if (dp >= dl) return overflow(src, sp, dst, dp);
da[dp++] = (byte) c;
} else if (c < 0x800) {
// 2 bytes, 11 bits
if (dl - dp < 2) return overflow(src, sp, dst, dp);
da[dp++] = (byte) (0xc0 | (c >> 6));
da[dp++] = (byte) (0x80 | (c & 0x3f));
} else if (isSurrogate(c)) {
// Have a surrogate pair
if (sgp == null) sgp = new Parser();
int uc = sgp.parse(c, sa, sp, sl);
if (uc < 0) {
updatePositions(src, sp, dst, dp);
return sgp.error();
}
if (dl - dp < 4) return overflow(src, sp, dst, dp);
da[dp++] = (byte) (0xf0 | ((uc >> 18)));
da[dp++] = (byte) (0x80 | ((uc >> 12) & 0x3f));
da[dp++] = (byte) (0x80 | ((uc >> 6) & 0x3f));
da[dp++] = (byte) (0x80 | (uc & 0x3f));
sp++; // 2 chars
} else {
// 3 bytes, 16 bits
if (dl - dp < 3) return overflow(src, sp, dst, dp);
da[dp++] = (byte) (0xe0 | ((c >> 12)));
da[dp++] = (byte) (0x80 | ((c >> 6) & 0x3f));
da[dp++] = (byte) (0x80 | (c & 0x3f));
}
sp++;
}
updatePositions(src, sp, dst, dp);
return CoderResult.UNDERFLOW;
}
private CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
while (src.hasRemaining()) {
char c = src.get();
if (c < 0x80) {
// Have at most seven bits
if (!dst.hasRemaining()) return overflow(src, mark);
dst.put((byte) c);
} else if (c < 0x800) {
// 2 bytes, 11 bits
if (dst.remaining() < 2) return overflow(src, mark);
dst.put((byte) (0xc0 | (c >> 6)));
dst.put((byte) (0x80 | (c & 0x3f)));
} else if (isSurrogate(c)) {
// Have a surrogate pair
if (sgp == null) sgp = new Parser();
int uc = sgp.parse(c, src);
if (uc < 0) {
src.position(mark);
return sgp.error();
}
if (dst.remaining() < 4) return overflow(src, mark);
dst.put((byte) (0xf0 | ((uc >> 18))));
dst.put((byte) (0x80 | ((uc >> 12) & 0x3f)));
dst.put((byte) (0x80 | ((uc >> 6) & 0x3f)));
dst.put((byte) (0x80 | (uc & 0x3f)));
mark++; // 2 chars
} else {
// 3 bytes, 16 bits
if (dst.remaining() < 3) return overflow(src, mark);
dst.put((byte) (0xe0 | ((c >> 12))));
dst.put((byte) (0x80 | ((c >> 6) & 0x3f)));
dst.put((byte) (0x80 | (c & 0x3f)));
}
mark++;
}
src.position(mark);
return CoderResult.UNDERFLOW;
}
