pdx-syntax 0.2.0

Paradox script/localization syntax parser.
Documentation 
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//! Syntax grammar for scripts.
//!
grammar;

use crate::script::types::*;

match {  
    // white space
    r"\s*" => {},
    // line comment
    r"\#[^\n\r]*[\n\r]*" => {},
    // default (defined below)
    _
}

pub Units: Units = <Unit+> => Units(<>);

Unit: Unit = {
    <key: Key> "=" <value: Value> => Unit::KeyValue(key, value),
    <value: Value> => Unit::SingleValue(value),
    <key: Key> "?=" <value: Value> => Unit::Questioned(key, value),
    <key: Key> <rel: Rel> <value: Value> => Unit::Relation(key, rel.to_string(), value),
}

/// Relation operator.
Rel: String = {
    r"==" => <>.to_string(),
    r">=" => <>.to_string(),
    r"<=" => <>.to_string(),
    r">" => <>.to_string(),
    r"<" => <>.to_string(),
}

Key: Key = <Entry> => Key(<>);

Value: Value = {
    "{" "}" => Value::Empty,
    <Entry> => Value::Primitive(<>),
    "{" <Units> "}" => Value::Units(Box::new(<>)),
}

Entry: Entry = {
    <Ident> => Entry::Ident(<>),
    <RawStr> => Entry::RawStr(<>),
}

Ident: String = r#"[^=<>\{\}\"\n\r\s]*"# => <>.to_string();
RawStr: String = r#"\"[^\"]*\""# => <>.to_string();