# 🛠️ oak-elixir Developer Guide
Elixir support for the Oak language framework.
Welcome to the internal implementation of the Elixir parser. This module provides the core logic for tokenizing and parsing Elixir source code into a high-fidelity syntax tree.
## 📦 Core Components
- **Lexer**: Tokenizes Elixir source code, handling sigils, atoms, and strings with full fidelity.
- **Parser**: Implements the Elixir grammar, producing a Green Tree that represents the concrete syntax.
- **AST**: Provides a type-safe Red Tree facade for easy traversal and analysis.
- **Language**: Defines the `ElixirLanguage` configuration and integration with the Oak framework.
## 🚀 Usage Example
### Basic Parsing
```rust
use oak_elixir::{ElixirParser, SourceText, ElixirLanguage};
fn parse_elixir_code(code: &str) {
let source = SourceText::new(code);
let config = ElixirLanguage::new();
let parser = ElixirParser::new(&config);
let result = parser.parse(&source);
if result.is_success() {
let root = result.root();
println!("AST Root: {:?}", root);
}
}
```
### Incremental Parsing
```rust
use oak_elixir::{ElixirParser, SourceText, ElixirLanguage};
fn incremental_update(old_code: &str, new_code: &str) {
let config = ElixirLanguage::new();
let mut parser = ElixirParser::new(&config);
// Initial parse
let initial_source = SourceText::new(old_code);
let _ = parser.parse(&initial_source);
// Incremental update
let updated_source = SourceText::new(new_code);
let result = parser.parse(&updated_source);
if result.is_success() {
println!("Incremental parse completed successfully.");
}
}
```
## 🔍 Diagnostics
The parser provides detailed diagnostics for syntax errors, including error ranges and helpful messages.
```rust
let result = parser.parse(&source);
for diagnostic in result.diagnostics() {
println!("Error at {:?}: {}", diagnostic.range(), diagnostic.message());
}
```