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move fallback name filter into nom parser

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kageru 2023-01-26 15:04:39 +01:00
parent 8bf596eeba
commit 940a6061ee
1 changed files with 116 additions and 79 deletions
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187
src/main.rs
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@ -1,57 +1,60 @@
#![feature(option_result_contains)]
use nom::{
branch::alt,
bytes::{complete::take_while_m_n, streaming::take_while},
combinator::{map_res, rest},
sequence::tuple,
IResult,
};
use serde::{de::Visitor, Deserialize, Deserializer};
use serde::Deserialize;
use std::{
collections::HashMap,
fmt::{self, Display},
str::FromStr,
};
type CardFilter = Box<dyn Fn(&SearchCard) -> bool>;
fn main() -> Result<(), Box<dyn std::error::Error>> {
let cards = serde_json::from_reader::<_, CardInfo>(std::io::BufReader::new(std::fs::File::open("cards.json")?))?.data;
let query = std::env::args()
.skip(1)
.map(|q| {
query_arg(&q).map(|(_, r)| build_filter(r)).unwrap_or_else(|_| {
println!("Trying to match {} as card name", q);
let q = q.to_lowercase();
Box::new(move |card: &Card| card.name.to_lowercase().contains(&q))
})
})
.collect::<Vec<Box<dyn Fn(&Card) -> bool>>>();
let search_cards: Vec<_> = cards.iter().map(SearchCard::from).collect();
let cards_by_id: HashMap<_, _> = cards.into_iter().map(|c| (c.id, c)).collect();
let mut query = Vec::new();
for q in std::env::args().skip(1) {
match query_arg(&q) {
Ok((_, filter)) => query.push(filter),
Err(e) => Err(format!("Malformed query fragment {q}: {e:?}"))?,
}
}
cards.iter().filter(|card| query.iter().all(|q| q(card))).for_each(|c| println!("{c}"));
search_cards.iter().filter(|card| query.iter().all(|q| q(card))).for_each(|c| println!("{}", cards_by_id.get(&c.id).unwrap()));
Ok(())
}
fn query_arg(input: &str) -> IResult<&str, (Field, Operator, Value)> {
tuple((field, operator, value))(input)
fn query_arg(input: &str) -> IResult<&str, CardFilter> {
alt((map_res(tuple((field, operator, value)), |t| build_filter(t)), map_res(rest, |q: &str| fallback_filter(q))))(input)
}
fn build_filter(query: (Field, Operator, Value)) -> Box<dyn Fn(&Card) -> bool> {
// dbg!("Building filter for {query:?}");
match query {
fn fallback_filter(query: &str) -> Result<CardFilter, String> {
if query.contains(&OPERATOR_CHARS[..]) {
return Err(format!("Invalid query: {query}"));
}
println!("Trying to match {} as card name", query);
let q = query.to_lowercase();
Ok(Box::new(move |card: &SearchCard| card.name.contains(&q)))
}
fn build_filter(query: (Field, Operator, Value)) -> Result<CardFilter, String> {
dbg!(&query);
Ok(match query {
(Field::Atk, op, Value::Numerical(n)) => Box::new(move |card| op.filter_number(card.atk, n)),
(Field::Def, op, Value::Numerical(n)) => Box::new(move |card| op.filter_number(card.def, n)),
(Field::Level, op, Value::Numerical(n)) => Box::new(move |card| op.filter_number(card.level, n)),
(Field::Type, Operator::Equals, Value::String(s)) => Box::new(move |card| card.r#type.to_lowercase() == s.to_lowercase()),
(Field::Attribute, Operator::Equals, Value::String(s)) => {
Box::new(move |card| card.attribute.as_ref().map(|s| s.to_lowercase()).contains(&s.to_lowercase()))
}
(Field::Class, Operator::Equals, Value::String(s)) => {
let s = s.to_lowercase();
Box::new(move |card| card.card_type.iter().map(|t| t.to_lowercase()).any(|t| t == s))
}
q => {
println!("unknown query: {q:?}");
Box::new(|_| false)
}
}
(Field::Type, Operator::Equals, Value::String(s)) => Box::new(move |card| card.r#type == s),
(Field::Class, Operator::Equals, Value::String(s)) => Box::new(move |card| card.card_type.contains(&s)),
q => Err(format!("unknown query: {q:?}"))?,
})
}
fn field(input: &str) -> IResult<&str, Field> {
@ -66,8 +69,9 @@ fn operator(input: &str) -> IResult<&str, Operator> {
fn value(input: &str) -> IResult<&str, Value> {
map_res(rest, |i: &str| match i.parse() {
Ok(n) => Result::<_, ()>::Ok(Value::Numerical(n)),
Err(_) => Ok(Value::String(i.to_owned())),
Ok(n) => Ok(Value::Numerical(n)),
Err(_) if i.is_empty() => Err("empty filter argument"),
Err(_) => Ok(Value::String(i.to_lowercase())),
})(input)
}
@ -146,28 +150,11 @@ struct CardInfo {
data: Vec<Card>,
}
fn split_types<'de, D: Deserializer<'de>>(deserializer: D) -> Result<Vec<String>, D::Error> {
struct SplittingVisitor;
impl<'de> Visitor<'de> for SplittingVisitor {
type Value = Vec<String>;
fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
formatter.write_str("a string")
}
fn visit_str<E: serde::de::Error>(self, v: &str) -> Result<Self::Value, E> {
Ok(v.split_whitespace().filter(|t| t != &"Card").map(str::to_owned).collect())
}
}
deserializer.deserialize_any(SplittingVisitor)
}
#[derive(Debug, Deserialize, PartialEq, Eq, Clone, Default)]
#[serde(tag = "type")]
struct Card {
#[serde(rename = "type", deserialize_with = "split_types")]
card_type: Vec<String>,
id: usize,
#[serde(rename = "type")]
card_type: String,
name: String,
#[serde(rename = "desc")]
text: String,
@ -181,7 +168,43 @@ struct Card {
level: Option<i32>,
#[serde(rename = "linkval")]
link_rating: Option<i32>,
linkmarkers: Option<Vec<String>>,
#[serde(rename = "linkmarkers")]
link_arrows: Option<Vec<String>>,
}
/// A struct derived from `Card` that has all fields lowercased for easier search
#[derive(Debug, PartialEq, Eq, Clone)]
struct SearchCard {
id: usize,
card_type: String,
name: String,
text: String,
atk: Option<i32>,
def: Option<i32>,
attribute: Option<String>,
r#type: String,
// also includes rank
level: Option<i32>,
link_rating: Option<i32>,
link_arrows: Option<Vec<String>>,
}
impl From<&Card> for SearchCard {
fn from(card: &Card) -> Self {
Self {
id: card.id,
card_type: card.card_type.to_lowercase(),
name: card.name.to_lowercase(),
text: card.text.to_lowercase(),
atk: card.atk,
def: card.def,
attribute: card.attribute.as_ref().map(|s| s.to_lowercase()),
r#type: card.r#type.to_lowercase(),
level: card.level,
link_rating: card.link_rating,
link_arrows: card.link_arrows.as_ref().map(|arrows| arrows.iter().map(|a| a.to_lowercase()).collect()),
}
}
}
impl Display for Card {
@ -195,8 +218,7 @@ impl Display for Card {
if let Some(attr) = &self.attribute {
write!(f, "{attr}/")?;
}
f.write_str(&self.r#type)?;
write!(f, " {})", self.card_type.join(" "))?;
write!(f, "{} {})", self.r#type, self.card_type)?;
if self.card_type.contains(&String::from("Monster")) {
match (self.atk, self.def) {
(Some(atk), Some(def)) => write!(f, " {atk} ATK / {def} DEF")?,
@ -214,9 +236,7 @@ impl Display for Card {
mod tests {
use super::*;
#[test]
fn test_spell() {
let s = r#"
const RAW_SPELL: &str = r#"
{
"id": 41142615,
"name": "The Cheerful Coffin",
@ -224,22 +244,8 @@ mod tests {
"desc": "Discard up to 3 Monster Cards from your hand to the Graveyard.",
"race": "Normal"
}"#;
let coffin: Card = serde_json::from_str(s).unwrap();
assert_eq!(
coffin,
Card {
card_type: vec!["Spell".to_owned()],
name: "The Cheerful Coffin".to_owned(),
text: "Discard up to 3 Monster Cards from your hand to the Graveyard.".to_owned(),
r#type: "Normal".to_owned(),
..Default::default()
}
)
}
#[test]
fn test_monster() {
let s = r#"
const RAW_MONSTER: &str = r#"
{
"id": 2326738,
"name": "Des Lacooda",
@ -251,11 +257,31 @@ mod tests {
"race": "Zombie",
"attribute": "EARTH"
}"#;
let munch: Card = serde_json::from_str(s).unwrap();
#[test]
fn test_spell() {
let coffin: Card = serde_json::from_str(RAW_SPELL).unwrap();
assert_eq!(
coffin,
Card {
id: 41142615,
card_type: "Spell Card".to_owned(),
name: "The Cheerful Coffin".to_owned(),
text: "Discard up to 3 Monster Cards from your hand to the Graveyard.".to_owned(),
r#type: "Normal".to_owned(),
..Default::default()
}
)
}
#[test]
fn test_monster() {
let munch: Card = serde_json::from_str(RAW_MONSTER).unwrap();
assert_eq!(
munch,
Card {
card_type: vec!["Effect".to_owned(), "Monster".to_owned()],
id: 2326738,
card_type: "Effect Monster".to_owned(),
name: "Des Lacooda".to_owned(),
text:
"Once per turn: You can change this card to face-down Defense Position. When this card is Flip Summoned: Draw 1 card."
@ -269,4 +295,15 @@ mod tests {
},
)
}
#[test]
fn level_filter_test() {
let lacooda = SearchCard::from(&serde_json::from_str::<Card>(RAW_MONSTER).unwrap());
let filter_level_3 = query_arg("l=3").unwrap().1;
assert!(filter_level_3(&lacooda));
let filter_level_5 = query_arg("l=5").unwrap().1;
assert!(!filter_level_5(&lacooda));
let filter_level_incorrect = query_arg("l===5").unwrap().1;
assert!(!filter_level_incorrect(&lacooda));
}
}