semtree-core 0.2.0

Core types for semtree: Language, Span, Node, Chunk
Documentation 
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use serde::{Deserialize, Serialize};
use std::fmt;

#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum Language {
    Rust,
    Python,
    JavaScript,
    TypeScript,
    Go,
    Unknown,
}

impl Language {
    pub fn from_extension(ext: &str) -> Self {
        match ext {
            "rs" => Self::Rust,
            "py" => Self::Python,
            "js" | "mjs" | "cjs" | "jsx" => Self::JavaScript,
            "ts" | "tsx" => Self::TypeScript,
            "go" => Self::Go,
            _ => Self::Unknown,
        }
    }

    pub fn from_path(path: &std::path::Path) -> Self {
        path.extension()
            .and_then(|e| e.to_str())
            .map(Self::from_extension)
            .unwrap_or(Self::Unknown)
    }
}

impl fmt::Display for Language {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let s = match self {
            Self::Rust => "rust",
            Self::Python => "python",
            Self::JavaScript => "javascript",
            Self::TypeScript => "typescript",
            Self::Go => "go",
            Self::Unknown => "unknown",
        };
        write!(f, "{s}")
    }
}