Function pom::parser::seq

pub fn seq<'a, 'b: 'a, I>(tag: &'b [I]) -> Parser<'a, I, &'a [I]>
where
    I: PartialEq + Debug,

Success when sequence of symbols matches current input.

Examples found in repository

examples/simple.rs (line 7)

fn example<'a>() -> Parser<'a, u8, Vec<u8>> {
	(sym(b'<') * none_of(b">").repeat(0..) - sym(b'>'))
		>> |tag| {
			(call(example) | none_of(b"<>").repeat(0..))
				- seq(b"</") - take(tag.len()).convert(move |t| if t == tag { Ok(()) } else { Err(()) })
				- sym(b'>')
		}
}

fn main() {
	let input = b"abcde";
	let parser = sym(b'a') * none_of(b"AB") - sym(b'c') + seq(b"de");
	let output = parser.parse(input);
	// assert_eq!(output, Ok( (b'b', &b"de"[..]) ) );
	println!("{:?}", output);
	println!("{:?}", example().parse("<app>bcb</app>".as_bytes()));
}

examples/whitespace.rs (line 53)

fn container<'a>() -> Parser<'a, u8, Container> {
	seq(b"Container\n")
		* (indented() | empty().map(|()| vec![]))
			.repeat(1..)
			.map(|lines| {
				lines
					.into_iter()
					.filter(|line| line.len() > 0)
					.fold(vec![], |accum, line| {
						accum
							.into_iter()
							.chain(line.into_iter().chain(vec![b'\n'].into_iter()))
							.collect()
					})
			})
			.map(|deden| subcontainer().parse(&deden).expect("subcont"))
			.map(|(containers, contents)| Container {
				containers,
				contents,
			})
}

examples/json.rs (line 46)

fn string<'a>() -> Parser<'a, u8, String> {
	let special_char = sym(b'\\')
		| sym(b'/')
		| sym(b'"')
		| sym(b'b').map(|_| b'\x08')
		| sym(b'f').map(|_| b'\x0C')
		| sym(b'n').map(|_| b'\n')
		| sym(b'r').map(|_| b'\r')
		| sym(b't').map(|_| b'\t');
	let escape_sequence = sym(b'\\') * special_char;
	let char_string = (none_of(b"\\\"") | escape_sequence)
		.repeat(1..)
		.convert(String::from_utf8);
	let utf16_char = seq(b"\\u")
		* is_a(hex_digit)
			.repeat(4)
			.convert(String::from_utf8)
			.convert(|digits| u16::from_str_radix(&digits, 16));
	let utf16_string = utf16_char.repeat(1..).map(|chars| {
		decode_utf16(chars)
			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
			.collect::<String>()
	});
	let string = sym(b'"') * (char_string | utf16_string).repeat(0..) - sym(b'"');
	string.map(|strings| strings.concat())
}

fn array<'a>() -> Parser<'a, u8, Vec<JsonValue>> {
	let elems = list(call(value), sym(b',') * space());
	sym(b'[') * space() * elems - sym(b']')
}

fn object<'a>() -> Parser<'a, u8, HashMap<String, JsonValue>> {
	let member = string() - space() - sym(b':') - space() + call(value);
	let members = list(member, sym(b',') * space());
	let obj = sym(b'{') * space() * members - sym(b'}');
	obj.map(|members| members.into_iter().collect::<HashMap<_, _>>())
}

fn value<'a>() -> Parser<'a, u8, JsonValue> {
	(seq(b"null").map(|_| JsonValue::Null)
		| seq(b"true").map(|_| JsonValue::Bool(true))
		| seq(b"false").map(|_| JsonValue::Bool(false))
		| number().map(|num| JsonValue::Num(num))
		| string().map(|text| JsonValue::Str(text))
		| array().map(|arr| JsonValue::Array(arr))
		| object().map(|obj| JsonValue::Object(obj)))
		- space()
}

examples/json_file.rs (line 48)

fn string<'a>() -> Parser<'a, u8, String> {
	let special_char = sym(b'\\')
		| sym(b'/')
		| sym(b'"')
		| sym(b'b').map(|_| b'\x08')
		| sym(b'f').map(|_| b'\x0C')
		| sym(b'n').map(|_| b'\n')
		| sym(b'r').map(|_| b'\r')
		| sym(b't').map(|_| b'\t');
	let escape_sequence = sym(b'\\') * special_char;
	let char_string = (none_of(b"\\\"") | escape_sequence)
		.repeat(1..)
		.convert(String::from_utf8);
	let utf16_char = seq(b"\\u")
		* is_a(hex_digit)
			.repeat(4)
			.convert(String::from_utf8)
			.convert(|digits| u16::from_str_radix(&digits, 16));
	let utf16_string = utf16_char.repeat(1..).map(|chars| {
		decode_utf16(chars)
			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
			.collect::<String>()
	});
	let string = sym(b'"') * (char_string | utf16_string).repeat(0..) - sym(b'"');
	string.map(|strings| strings.concat())
}

fn array<'a>() -> Parser<'a, u8, Vec<JsonValue>> {
	let elems = list(call(value), sym(b',') * space());
	sym(b'[') * space() * elems - sym(b']')
}

fn object<'a>() -> Parser<'a, u8, HashMap<String, JsonValue>> {
	let member = string() - space() - sym(b':') - space() + call(value);
	let members = list(member, sym(b',') * space());
	let obj = sym(b'{') * space() * members - sym(b'}');
	obj.map(|members| members.into_iter().collect::<HashMap<_, _>>())
}

fn value<'a>() -> Parser<'a, u8, JsonValue> {
	(seq(b"null").map(|_| JsonValue::Null)
		| seq(b"true").map(|_| JsonValue::Bool(true))
		| seq(b"false").map(|_| JsonValue::Bool(false))
		| number().map(|num| JsonValue::Num(num))
		| string().map(|text| JsonValue::Str(text))
		| array().map(|arr| JsonValue::Array(arr))
		| object().map(|obj| JsonValue::Object(obj)))
		- space()
}