Function parse_expression 

pub fn parse_expression<'arena>(
    input: &str,
    arena: &'arena Bump,
) -> Result<AstExpr<'arena>, ExprError>

Parse an expression string into an AST.

This is the primary parsing function that requires an explicit arena for memory allocation. For parsing expression function bodies with parameters, use parse_expression_with_parameters.

Supported Features

• Arithmetic operators: +, -, *, /, %, ^, **
• Comparison operators: ==, !=, <, >, <=, >=, <>
• Logical operators: &&, ||
• Ternary conditional: condition ? true_expr : false_expr
• Function calls: func(arg1, arg2)
• Variables and constants
• Array access: array[index]
• Attribute access: object.attribute

Examples

use exp_rs::engine::parse_expression;
use bumpalo::Bump;

let arena = Bump::new();

// Basic arithmetic
let expr = parse_expression("2 + 3 * 4", &arena).unwrap();

// Ternary conditional
let expr = parse_expression("x > 0 ? 1 : -1", &arena).unwrap();

// Function calls
let expr = parse_expression("sin(x) + cos(y)", &arena).unwrap();