doke 0.3.0

The parsing library of `Dokedex`, a game content authoring tool that uses natural-looking language to define a game's objects. This rust crate defines an API to make `doke` parsers by using a simple pipeline syntax, and provides helpers for things like templating, debugging, and common syntax elements.
Documentation 
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use crate::{DokeNode, DokeParser, GodotValue, semantic::DokeNodeState};
use std::collections::HashMap;

/// A parser that prints the node tree for debugging purposes.
/// Can be added anywhere in a pipeline with `.add(DebugPrinter)`.
#[derive(Debug)]
pub struct DebugPrinter;

impl DebugPrinter {
    fn state_emoji(state: &DokeNodeState) -> &'static str {
        match state {
            DokeNodeState::Unresolved => "❓",
            DokeNodeState::Hypothesis(_) => "💡",
            DokeNodeState::Resolved(_) => "✅",
            DokeNodeState::Error(_) => "❌",
        }
    }

    fn print_node(node: &DokeNode, indent: usize, constituent_name: &str) {
        let padding = "  ".repeat(indent);
        println!(
            "{}{}{} {}",
            padding,
            if constituent_name != "" {
                format!("{}:", constituent_name)
            } else {
                "".to_string()
            },
            Self::state_emoji(&node.state),
            node.statement
        );

        for child in &node.children {
            Self::print_node(child, indent + 1, "");
        }
        for (name, child) in &node.constituents {
            Self::print_node(child, indent + 1, name);
        }
    }
}

impl DokeParser for DebugPrinter {
    fn process(&self, node: &mut DokeNode, _frontmatter: &HashMap<String, GodotValue>) {
        // Recursively print the node starting from here
        dbg!(&node);
        Self::print_node(node, 0, "");
    }
}