2023-07-26 23:33:50 +00:00
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use crate::Error;
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2023-07-03 14:26:20 +00:00
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use nom::{
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branch::alt,
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bytes::complete::{escaped_transform, tag},
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2023-10-05 15:41:00 +00:00
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character::complete::{alpha1, multispace0, multispace1, none_of},
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2023-07-03 14:26:20 +00:00
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combinator::{opt, value},
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multi::{many0, many1, separated_list1},
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IResult,
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};
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2023-07-21 03:22:00 +00:00
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use std::num::ParseIntError;
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2023-07-03 14:26:20 +00:00
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2023-07-27 00:15:22 +00:00
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impl From<ParseSizeError> for Error {
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fn from(_: ParseSizeError) -> Self {
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Self::InvalidBoardSize
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}
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}
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2023-07-03 14:26:20 +00:00
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#[derive(Debug)]
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pub enum ParseSizeError {
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ParseIntError(ParseIntError),
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InsufficientArguments,
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}
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impl From<ParseIntError> for ParseSizeError {
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fn from(e: ParseIntError) -> Self {
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Self::ParseIntError(e)
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}
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}
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2023-07-21 03:22:00 +00:00
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#[derive(Clone, Debug, PartialEq)]
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2023-07-03 14:26:20 +00:00
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pub struct Size {
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pub width: i32,
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pub height: i32,
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}
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impl TryFrom<&str> for Size {
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type Error = ParseSizeError;
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fn try_from(s: &str) -> Result<Self, Self::Error> {
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let parts = s
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.split(':')
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.map(|v| v.parse::<i32>())
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.collect::<Result<Vec<i32>, ParseIntError>>()?;
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match parts[..] {
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[width, height, ..] => Ok(Size { width, height }),
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[dim] => Ok(Size {
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width: dim,
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height: dim,
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}),
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[] => Err(ParseSizeError::InsufficientArguments),
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}
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}
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}
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2023-07-27 00:53:21 +00:00
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#[derive(Clone, Debug, PartialEq)]
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2023-07-03 14:26:20 +00:00
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pub struct Tree {
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2023-08-11 15:03:53 +00:00
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pub root: Node,
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2023-07-03 14:26:20 +00:00
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}
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impl ToString for Tree {
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fn to_string(&self) -> String {
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2023-08-11 15:03:53 +00:00
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format!("({})", self.root.to_string())
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2023-07-03 14:26:20 +00:00
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}
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}
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2023-07-27 00:53:21 +00:00
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#[derive(Clone, Debug, PartialEq)]
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2023-07-03 14:26:20 +00:00
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pub struct Node {
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pub properties: Vec<Property>,
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2023-08-11 15:03:53 +00:00
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pub next: Vec<Node>,
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2023-07-03 14:26:20 +00:00
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}
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impl ToString for Node {
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fn to_string(&self) -> String {
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let props = self
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.properties
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.iter()
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.map(|prop| prop.to_string())
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.collect::<String>();
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2023-08-11 15:03:53 +00:00
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let next = if self.next.len() == 1 {
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self.next
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.iter()
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.map(|node| node.to_string())
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.collect::<Vec<String>>()
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.join("")
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} else {
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self.next
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.iter()
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.map(|node| format!("({})", node.to_string()))
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.collect::<Vec<String>>()
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.join("")
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};
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format!(";{}{}", props, next)
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2023-07-03 14:26:20 +00:00
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}
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}
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impl Node {
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pub fn find_prop(&self, ident: &str) -> Option<Property> {
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self.properties
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.iter()
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.find(|prop| prop.ident == ident)
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.cloned()
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}
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2023-08-11 15:03:53 +00:00
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2023-10-05 15:41:00 +00:00
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pub fn next(&self) -> Option<&Node> {
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2023-08-11 15:03:53 +00:00
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self.next.get(0)
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}
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2023-07-03 14:26:20 +00:00
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}
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#[derive(Clone, Debug, PartialEq)]
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pub struct Property {
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pub ident: String,
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pub values: Vec<String>,
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}
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impl ToString for Property {
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fn to_string(&self) -> String {
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let values = self
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.values
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.iter()
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.map(|val| format!("[{}]", val))
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.collect::<String>();
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format!("{}{}", self.ident, values)
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}
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}
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pub fn parse_collection<'a, E: nom::error::ParseError<&'a str>>(
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input: &'a str,
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) -> IResult<&'a str, Vec<Tree>, E> {
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2023-08-11 15:03:53 +00:00
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let (input, roots) = separated_list1(multispace1, parse_tree)(input)?;
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let trees = roots
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.into_iter()
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.map(|root| Tree { root })
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.collect::<Vec<Tree>>();
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Ok((input, trees))
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2023-07-03 14:26:20 +00:00
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}
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// note: must preserve unknown properties
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// note: must fix or preserve illegally formatted game-info properties
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// note: must correct or delete illegally foramtted properties, but display a warning
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2023-08-11 15:03:53 +00:00
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fn parse_tree<'a, E: nom::error::ParseError<&'a str>>(input: &'a str) -> IResult<&'a str, Node, E> {
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2023-07-20 04:42:49 +00:00
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let (input, _) = multispace0(input)?;
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2023-08-11 15:03:53 +00:00
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let (input, _) = tag("(")(input)?;
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let (input, node) = parse_node(input)?;
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2023-07-20 04:42:49 +00:00
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let (input, _) = multispace0(input)?;
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2023-08-11 15:03:53 +00:00
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let (input, _) = tag(")")(input)?;
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2023-07-03 14:26:20 +00:00
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2023-08-11 15:03:53 +00:00
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Ok((input, node))
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2023-07-03 14:26:20 +00:00
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}
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fn parse_node<'a, E: nom::error::ParseError<&'a str>>(input: &'a str) -> IResult<&'a str, Node, E> {
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let (input, _) = multispace0(input)?;
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2023-08-11 15:03:53 +00:00
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let (input, _) = opt(tag(";"))(input)?;
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2023-07-03 14:26:20 +00:00
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let (input, properties) = many1(parse_property)(input)?;
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2023-08-11 15:03:53 +00:00
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let (input, next) = opt(parse_node)(input)?;
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let (input, mut next_seq) = many0(parse_tree)(input)?;
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let mut next = next.map(|n| vec![n]).unwrap_or(vec![]);
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next.append(&mut next_seq);
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Ok((input, Node { properties, next }))
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2023-07-03 14:26:20 +00:00
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}
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fn parse_property<'a, E: nom::error::ParseError<&'a str>>(
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input: &'a str,
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) -> IResult<&'a str, Property, E> {
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let (input, _) = multispace0(input)?;
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let (input, ident) = alpha1(input)?;
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let (input, values) = many1(parse_propval)(input)?;
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2023-07-20 04:42:49 +00:00
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let (input, _) = multispace0(input)?;
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2023-07-03 14:26:20 +00:00
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let values = values
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.into_iter()
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.map(|v| v.to_owned())
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.collect::<Vec<String>>();
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Ok((
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input,
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Property {
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ident: ident.to_owned(),
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values,
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},
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))
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}
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fn parse_propval<'a, E: nom::error::ParseError<&'a str>>(
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input: &'a str,
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) -> IResult<&'a str, String, E> {
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let (input, _) = multispace0(input)?;
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let (input, _) = tag("[")(input)?;
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let (input, value) = parse_propval_text(input)?;
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let (input, _) = tag("]")(input)?;
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Ok((input, value.unwrap_or(String::new())))
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}
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fn parse_propval_text<'a, E: nom::error::ParseError<&'a str>>(
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input: &'a str,
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) -> IResult<&'a str, Option<String>, E> {
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let (input, value) = opt(escaped_transform(
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none_of("\\]"),
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'\\',
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alt((
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value("]", tag("]")),
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value("\\", tag("\\")),
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value("", tag("\n")),
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)),
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))(input)?;
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Ok((input, value.map(|v| v.to_owned())))
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}
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#[cfg(test)]
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mod test {
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use super::*;
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const EXAMPLE: &'static str = "(;FF[4]C[root](;C[a];C[b](;C[c])
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(;C[d];C[e]))
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(;C[f](;C[g];C[h];C[i])
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(;C[j])))";
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#[test]
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fn it_can_parse_properties() {
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let (_, prop) = parse_property::<nom::error::VerboseError<&str>>("C[a]").unwrap();
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assert_eq!(
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prop,
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Property {
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ident: "C".to_owned(),
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values: vec!["a".to_owned()]
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}
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);
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let (_, prop) = parse_property::<nom::error::VerboseError<&str>>("C[a][b][c]").unwrap();
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assert_eq!(
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prop,
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Property {
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ident: "C".to_owned(),
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values: vec!["a".to_owned(), "b".to_owned(), "c".to_owned()]
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}
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);
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}
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#[test]
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fn it_can_parse_a_standalone_node() {
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let (_, node) = parse_node::<nom::error::VerboseError<&str>>(";B[ab]").unwrap();
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assert_eq!(
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node,
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Node {
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properties: vec![Property {
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ident: "B".to_owned(),
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values: vec!["ab".to_owned()]
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2023-08-11 15:03:53 +00:00
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}],
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next: vec![]
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2023-07-03 14:26:20 +00:00
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}
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);
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let (_, node) =
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parse_node::<nom::error::VerboseError<&str>>(";B[ab];W[dp];B[pq]C[some comments]")
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.unwrap();
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assert_eq!(
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node,
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Node {
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properties: vec![Property {
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ident: "B".to_owned(),
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values: vec!["ab".to_owned()]
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2023-08-11 15:03:53 +00:00
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}],
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next: vec![Node {
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properties: vec![Property {
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ident: "W".to_owned(),
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values: vec!["dp".to_owned()]
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}],
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next: vec![Node {
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properties: vec![
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Property {
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ident: "B".to_owned(),
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values: vec!["pq".to_owned()]
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},
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Property {
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ident: "C".to_owned(),
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values: vec!["some comments".to_owned()]
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}
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],
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next: vec![],
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}]
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2023-07-03 14:26:20 +00:00
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}]
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}
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);
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}
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#[test]
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fn it_can_parse_a_simple_sequence() {
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let (_, sequence) =
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parse_tree::<nom::error::VerboseError<&str>>("(;B[ab];W[dp];B[pq]C[some comments])")
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.unwrap();
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assert_eq!(
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sequence,
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2023-08-11 15:03:53 +00:00
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Node {
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properties: vec![Property {
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ident: "B".to_owned(),
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values: vec!["ab".to_owned()]
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}],
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next: vec![Node {
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properties: vec![Property {
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ident: "W".to_owned(),
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values: vec!["dp".to_owned()]
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}],
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next: vec![Node {
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2023-07-03 14:26:20 +00:00
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properties: vec![
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Property {
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ident: "B".to_owned(),
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values: vec!["pq".to_owned()]
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},
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Property {
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ident: "C".to_owned(),
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values: vec!["some comments".to_owned()]
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}
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2023-08-11 15:03:53 +00:00
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],
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next: vec![],
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}]
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}],
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},
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2023-07-03 14:26:20 +00:00
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);
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}
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#[test]
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2023-08-11 15:03:53 +00:00
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fn it_can_parse_a_branching_sequence() {
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2023-07-03 14:26:20 +00:00
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let text = "(;C[a];C[b](;C[c])(;C[d];C[e]))";
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2023-08-11 15:03:53 +00:00
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let (_, tree) = parse_tree::<nom::error::VerboseError<&str>>(text).unwrap();
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2023-07-03 14:26:20 +00:00
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2023-08-11 15:03:53 +00:00
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let expected = Node {
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properties: vec![Property {
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ident: "C".to_owned(),
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values: vec!["a".to_owned()],
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}],
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next: vec![Node {
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2023-07-03 14:26:20 +00:00
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properties: vec![Property {
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ident: "C".to_owned(),
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values: vec!["b".to_owned()],
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}],
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2023-08-11 15:03:53 +00:00
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next: vec![
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Node {
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properties: vec![Property {
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ident: "C".to_owned(),
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values: vec!["c".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![],
|
|
|
|
},
|
|
|
|
Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["d".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["e".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![],
|
|
|
|
}],
|
|
|
|
},
|
|
|
|
],
|
2023-07-03 14:26:20 +00:00
|
|
|
}],
|
|
|
|
};
|
|
|
|
|
2023-08-11 15:03:53 +00:00
|
|
|
assert_eq!(tree, expected);
|
2023-07-03 14:26:20 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_can_parse_example_1() {
|
2023-08-11 15:03:53 +00:00
|
|
|
let (_, tree) = parse_tree::<nom::error::VerboseError<&str>>(EXAMPLE).unwrap();
|
2023-07-03 14:26:20 +00:00
|
|
|
|
2023-08-11 15:03:53 +00:00
|
|
|
let j = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["j".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![],
|
|
|
|
};
|
|
|
|
let i = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["i".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![],
|
|
|
|
};
|
|
|
|
let h = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["h".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![i],
|
|
|
|
};
|
|
|
|
let g = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["g".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![h],
|
|
|
|
};
|
|
|
|
let f = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["f".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![g, j],
|
|
|
|
};
|
|
|
|
let e = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["e".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![],
|
|
|
|
};
|
|
|
|
let d = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["d".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![e],
|
|
|
|
};
|
|
|
|
let c = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["c".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![],
|
|
|
|
};
|
|
|
|
let b = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["b".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![c, d],
|
|
|
|
};
|
|
|
|
let a = Node {
|
|
|
|
properties: vec![Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["a".to_owned()],
|
|
|
|
}],
|
|
|
|
next: vec![b],
|
|
|
|
};
|
|
|
|
let expected = Node {
|
|
|
|
properties: vec![
|
|
|
|
Property {
|
|
|
|
ident: "FF".to_owned(),
|
|
|
|
values: vec!["4".to_owned()],
|
2023-07-03 14:26:20 +00:00
|
|
|
},
|
2023-08-11 15:03:53 +00:00
|
|
|
Property {
|
|
|
|
ident: "C".to_owned(),
|
|
|
|
values: vec!["root".to_owned()],
|
2023-07-03 14:26:20 +00:00
|
|
|
},
|
2023-08-11 15:03:53 +00:00
|
|
|
],
|
|
|
|
next: vec![a, f],
|
|
|
|
};
|
|
|
|
|
|
|
|
assert_eq!(tree, expected);
|
2023-07-03 14:26:20 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_can_regenerate_the_tree() {
|
|
|
|
let (_, tree1) = parse_tree::<nom::error::VerboseError<&str>>(EXAMPLE).unwrap();
|
2023-08-11 15:03:53 +00:00
|
|
|
let tree1 = Tree { root: tree1 };
|
2023-07-03 14:26:20 +00:00
|
|
|
assert_eq!(
|
|
|
|
tree1.to_string(),
|
|
|
|
"(;FF[4]C[root](;C[a];C[b](;C[c])(;C[d];C[e]))(;C[f](;C[g];C[h];C[i])(;C[j])))"
|
|
|
|
);
|
|
|
|
let (_, tree2) = parse_tree::<nom::error::VerboseError<&str>>(&tree1.to_string()).unwrap();
|
2023-08-11 15:03:53 +00:00
|
|
|
assert_eq!(tree1, Tree { root: tree2 });
|
2023-07-03 14:26:20 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_parses_propvals() {
|
|
|
|
let (_, propval) = parse_propval::<nom::error::VerboseError<&str>>("[]").unwrap();
|
|
|
|
assert_eq!(propval, "".to_owned());
|
|
|
|
|
|
|
|
let (_, propval) =
|
|
|
|
parse_propval::<nom::error::VerboseError<&str>>("[normal propval]").unwrap();
|
|
|
|
assert_eq!(propval, "normal propval".to_owned());
|
|
|
|
|
|
|
|
let (_, propval) =
|
|
|
|
parse_propval::<nom::error::VerboseError<&str>>(r"[need an [escape\] in the propval]")
|
|
|
|
.unwrap();
|
|
|
|
assert_eq!(propval, "need an [escape] in the propval".to_owned());
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_parses_propvals_with_hard_linebreaks() {
|
|
|
|
let (_, propval) = parse_propval_text::<nom::error::VerboseError<&str>>(
|
|
|
|
"There are hard linebreaks & soft linebreaks.
|
|
|
|
Soft linebreaks...",
|
|
|
|
)
|
|
|
|
.unwrap();
|
|
|
|
assert_eq!(
|
|
|
|
propval,
|
|
|
|
Some(
|
|
|
|
"There are hard linebreaks & soft linebreaks.
|
|
|
|
Soft linebreaks..."
|
|
|
|
.to_owned()
|
|
|
|
)
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_parses_propvals_with_escaped_closing_brackets() {
|
|
|
|
let (_, propval) =
|
|
|
|
parse_propval_text::<nom::error::VerboseError<&str>>(r"escaped closing \] bracket")
|
|
|
|
.unwrap();
|
|
|
|
assert_eq!(
|
|
|
|
propval,
|
|
|
|
Some(r"escaped closing ] bracket".to_owned()).to_owned()
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_parses_propvals_with_soft_linebreaks() {
|
|
|
|
let (_, propval) = parse_propval_text::<nom::error::VerboseError<&str>>(
|
|
|
|
r"Soft linebreaks are linebreaks preceeded by '\\' like this one >o\
|
|
|
|
k<. Hard line breaks are all other linebreaks.",
|
|
|
|
)
|
|
|
|
.unwrap();
|
|
|
|
assert_eq!(
|
|
|
|
propval,
|
|
|
|
Some("Soft linebreaks are linebreaks preceeded by '\\' like this one >ok<. Hard line breaks are all other linebreaks.".to_owned())
|
|
|
|
.to_owned()
|
|
|
|
);
|
|
|
|
}
|
2023-07-20 04:42:49 +00:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_parses_sgf_with_newline_in_sequence() {
|
|
|
|
let data = String::from(
|
|
|
|
"(;FF[4]C[root](;C[a];C[b](;C[c])(;C[d];C[e]
|
|
|
|
))(;C[f](;C[g];C[h];C[i])(;C[j])))",
|
|
|
|
);
|
|
|
|
parse_tree::<nom::error::VerboseError<&str>>(&data).unwrap();
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn it_parses_sgf_with_newline_between_two_sequence_closings() {
|
|
|
|
let data = String::from(
|
|
|
|
"(;FF[4]C[root](;C[a];C[b](;C[c])(;C[d];C[e])
|
|
|
|
)(;C[f](;C[g];C[h];C[i])(;C[j])))",
|
|
|
|
);
|
|
|
|
parse_tree::<nom::error::VerboseError<&str>>(&data).unwrap();
|
|
|
|
}
|
2023-07-03 14:26:20 +00:00
|
|
|
}
|