cargo_tsgen 0.1.0

Additional code generation tools for tree-sitter
Documentation 
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/*!
One-line description.

 */

use crate::{
    error::Error,
    reader::NodeTypesFile,
    writer::{Arguments, Output},
};
use std::io::Write;
use tera::Tera;

// ------------------------------------------------------------------------------------------------
// Public Types
// ------------------------------------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq)]
pub struct ConstantsFile;

// ------------------------------------------------------------------------------------------------
// Implementations
// ------------------------------------------------------------------------------------------------

impl Output for ConstantsFile {
    const DEFAULT_FILE_NAME: &str = "nodes";
    const DEFAULT_DIRECTORY: &str = "bindings";
    type InputFile = NodeTypesFile;

    fn write<W>(&self, arguments: Arguments<Self::InputFile>, w: &mut W) -> Result<(), Error>
    where
        W: Write,
    {
        let tera = Tera::new("templates/**/constants.*")?;

        let mut context = tera::Context::new();
        context.insert(
            "super_node_names",
            &arguments.input_file.super_type_node_type_names(),
        );
        context.insert(
            "node_names",
            &arguments.input_file.regular_node_type_names(),
        );
        context.insert("field_names", &arguments.input_file.field_names());
        context.insert(
            "terminal_names",
            &arguments.input_file.terminal_node_type_names(),
        );

        let rendered = tera
            .render(&format!("constants.{}", arguments.for_language), &context)
            .unwrap();
        w.write(rendered.as_bytes())?;

        Ok(())
    }
}