Module parse 

Runtime expression parser — convert strings to symbolic expressions. Runtime expression parser.

Parses mathematical expressions from strings into the arena. Uses a Pratt parser (precedence climbing) with the same grammar as the expr! proc macro:

• Operators: +, -, *, /, ^ (right-associative)
• Unary: - (prefix negation)
• Functions: sin, cos, tan, exp, ln, sqrt, abs
• Parentheses: (, )
• Atoms: integer literals, symbol names
• Constants: pi, e, I, inf, nan

Examples

use symplex::prelude::*;

let ctx = Context::new();
let expr = symplex::parse::parse(&ctx, "x^2 + 2*x + 1").unwrap();
assert_eq!(format!("{expr}"), "x^2 + 2*x + 1");

Structs

ParseError

Error returned when parsing fails.

Functions

parse

Parse a mathematical expression string into an Ex.