Module language 

Language Abstraction for AST Parsing

This module defines the Language trait, which abstracts over language-specific details for AST parsing and pattern matching.

Purpose

• Meta-variable Handling: Configure how meta-variables (e.g., $A) are recognized and processed for different languages.
• Pattern Preprocessing: Normalize pattern code before matching, adapting to language-specific quirks.
• Tree-sitter Integration: Map node kinds and fields to tree-sitter IDs for efficient AST traversal.
• Extensibility: Support custom language implementations (see Tsx for TypeScript/TSX).

Key Components

• Language: Core trait for language-specific AST operations.
• Tsx: Example implementation for TypeScript/TSX.
• Meta-variable extraction and normalization utilities.

Example

use thread_ast_engine::language::Language;

let lang = Tsx {};
let pattern = lang.pre_process_pattern("var $A = $B");
let meta_var = lang.extract_meta_var("$A");

Traits

Language

Trait to abstract ts-language usage in ast-grep, which includes: