normalize-languages 0.1.0

//! TOML language support.

use crate::external_packages::ResolvedPackage;
use crate::{Export, Import, Language, Symbol, SymbolKind, Visibility, VisibilityMechanism};
use std::path::{Path, PathBuf};
use tree_sitter::Node;

/// TOML language support.
pub struct Toml;

impl Language for Toml {
    fn name(&self) -> &'static str {
        "TOML"
    }
    fn extensions(&self) -> &'static [&'static str] {
        &["toml"]
    }
    fn grammar_name(&self) -> &'static str {
        "toml"
    }

    fn has_symbols(&self) -> bool {
        false
    }

    // TOML is config, not code - no functions/types/control flow
    fn container_kinds(&self) -> &'static [&'static str] {
        &["table", "table_array_element"]
    }
    fn function_kinds(&self) -> &'static [&'static str] {
        &[]
    }
    fn type_kinds(&self) -> &'static [&'static str] {
        &[]
    }
    fn import_kinds(&self) -> &'static [&'static str] {
        &[]
    }
    fn public_symbol_kinds(&self) -> &'static [&'static str] {
        &[]
    }
    fn visibility_mechanism(&self) -> VisibilityMechanism {
        VisibilityMechanism::NotApplicable
    }
    fn scope_creating_kinds(&self) -> &'static [&'static str] {
        &[]
    }
    fn control_flow_kinds(&self) -> &'static [&'static str] {
        &[]
    }
    fn complexity_nodes(&self) -> &'static [&'static str] {
        &[]
    }
    fn nesting_nodes(&self) -> &'static [&'static str] {
        &[]
    }

    fn signature_suffix(&self) -> &'static str {
        ""
    }

    fn extract_function(
        &self,
        _node: &Node,
        _content: &str,
        _in_container: bool,
    ) -> Option<Symbol> {
        None
    }

    fn extract_container(&self, node: &Node, content: &str) -> Option<Symbol> {
        let mut cursor = node.walk();
        for child in node.children(&mut cursor) {
            if child.kind() == "bare_key"
                || child.kind() == "dotted_key"
                || child.kind() == "quoted_key"
            {
                let name = content[child.byte_range()].to_string();
                return Some(Symbol {
                    name: name.clone(),
                    kind: SymbolKind::Module,
                    signature: format!("[{}]", name),
                    docstring: None,
                    attributes: Vec::new(),
                    start_line: node.start_position().row + 1,
                    end_line: node.end_position().row + 1,
                    visibility: Visibility::Public,
                    children: Vec::new(),
                    is_interface_impl: false,
                    implements: Vec::new(),
                });
            }
        }
        None
    }

    fn extract_type(&self, _node: &Node, _content: &str) -> Option<Symbol> {
        None
    }
    fn extract_docstring(&self, _node: &Node, _content: &str) -> Option<String> {
        None
    }

    fn extract_attributes(&self, _node: &Node, _content: &str) -> Vec<String> {
        Vec::new()
    }
    fn extract_imports(&self, _node: &Node, _content: &str) -> Vec<Import> {
        Vec::new()
    }

    fn format_import(&self, _import: &Import, _names: Option<&[&str]>) -> String {
        // TOML has no imports
        String::new()
    }
    fn extract_public_symbols(&self, _node: &Node, _content: &str) -> Vec<Export> {
        Vec::new()
    }

    fn is_public(&self, _node: &Node, _content: &str) -> bool {
        true
    }
    fn get_visibility(&self, _node: &Node, _content: &str) -> Visibility {
        Visibility::Public
    }

    fn is_test_symbol(&self, _symbol: &crate::Symbol) -> bool {
        false
    }

    fn embedded_content(&self, _node: &Node, _content: &str) -> Option<crate::EmbeddedBlock> {
        None
    }

    fn container_body<'a>(&self, _node: &'a Node<'a>) -> Option<Node<'a>> {
        None
    }
    fn body_has_docstring(&self, _body: &Node, _content: &str) -> bool {
        false
    }
    fn node_name<'a>(&self, _node: &Node, _content: &'a str) -> Option<&'a str> {
        None
    }

    fn file_path_to_module_name(&self, _: &Path) -> Option<String> {
        None
    }
    fn module_name_to_paths(&self, _: &str) -> Vec<String> {
        Vec::new()
    }

    fn lang_key(&self) -> &'static str {
        ""
    }
    fn resolve_local_import(&self, _: &str, _: &Path, _: &Path) -> Option<PathBuf> {
        None
    }
    fn resolve_external_import(&self, _: &str, _: &Path) -> Option<ResolvedPackage> {
        None
    }
    fn is_stdlib_import(&self, _: &str, _: &Path) -> bool {
        false
    }
    fn get_version(&self, _: &Path) -> Option<String> {
        None
    }
    fn find_package_cache(&self, _: &Path) -> Option<PathBuf> {
        None
    }
    fn indexable_extensions(&self) -> &'static [&'static str] {
        &[]
    }
    fn find_stdlib(&self, _: &Path) -> Option<PathBuf> {
        None
    }
    fn package_module_name(&self, name: &str) -> String {
        name.to_string()
    }
    fn package_sources(&self, _: &Path) -> Vec<crate::PackageSource> {
        Vec::new()
    }
    fn discover_packages(&self, _: &crate::PackageSource) -> Vec<(String, PathBuf)> {
        Vec::new()
    }
    fn find_package_entry(&self, _: &Path) -> Option<PathBuf> {
        None
    }

    fn should_skip_package_entry(&self, name: &str, is_dir: bool) -> bool {
        use crate::traits::{has_extension, skip_dotfiles};
        if skip_dotfiles(name) {
            return true;
        }
        !is_dir && !has_extension(name, self.indexable_extensions())
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::validate_unused_kinds_audit;

    #[test]
    fn unused_node_kinds_audit() {
        // TOML has no "interesting" unused kinds matching our patterns
        let documented_unused: &[&str] = &[];
        validate_unused_kinds_audit(&Toml, documented_unused)
            .expect("TOML unused node kinds audit failed");
    }
}