Crate tinyexpr

TinyExpr is a tiny recursive descent expression parser, compiler, and evaluation engine for math expressions. This is a work in progress port of TinyExpr to Rust.

Current release only supports built-in system functions (trigonometry, algebraic operations, constants, etc.). See the tests module for more examples.

Quick Start

extern crate tinyexpr;

fn main()
{
    // parse the expression and fetch result
    let r = tinyexpr::interp("2+2*2").unwrap();

    // should print "6"
    println!("{:?}", r);
}

Modules

error

Error type for tinyexpr crate.

Constants

TE_CLOSURE0

TE_CLOSURE1

TE_CLOSURE2

TE_CLOSURE3

TE_CLOSURE4

TE_CLOSURE5

TE_CLOSURE6

TE_CLOSURE7

TE_CONSTANT

TE_FLAG_PURE

TE_FUNCTION0

TE_FUNCTION1

TE_FUNCTION2

TE_FUNCTION3

TE_FUNCTION4

TE_FUNCTION5

TE_FUNCTION6

TE_FUNCTION7

TE_VARIABLE

TOK_CLOSE

TOK_END

TOK_ERROR

TOK_INFIX

TOK_NULL

TOK_NUMBER

TOK_OPEN

TOK_SEP

TOK_VARIABLE

T_MASK

Functions

interp

Interprets a string expression as a mathematical expresion, evaluates it and returns its result.