clc-engine 0.1.4

Provide calculation api for calculator ui
Documentation 
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/// Return constant.
/// cst!("e")
macro_rules! cst {
    ($c:expr) => {
        crate::expression::Constant::try_from($c).unwrap()
    };
}

/// Return constant expression.
/// cst_exp!("e")
macro_rules! cst_exp {
    ($c:expr) => {
        crate::expression::Expression::constant(crate::expression::macros::cst!($c))
    };
}

/// Return Literal expression.
/// lit!(10).
macro_rules! lit {
    ($lit:expr) => {
        crate::expression::Expression::from($lit)
    };
}

/// Return Variable expression.
/// var!("x").
macro_rules! var {
    ($ident:expr) => {
        crate::expression::Variable::new($ident)
    };
}

/// Return lambda expression.
/// lambda!(["x"], node!("x", '^', 2))
macro_rules! lambda {
    ([  $var:expr ], $expr:expr) => {
        crate::expression::Lambda::new($var, $expr)
    };
}

/// Return function call expression.
/// fc_exp!("sqrt", 100)
macro_rules! fc_exp {
        ($ident:expr, [ $( $expr:expr ),+ ], $lambda:expr) => {{
            let fc = crate::expression::macros::fc!($ident, [ $( $expr ),+ ] , $lambda);
            crate::expression::Expression::func_call(fc)
        }};
        ($ident:expr, $( $expr:expr ),+) => {{
            let fc = crate::expression::macros::fc!($ident, $( $expr ),+ );
            crate::expression::Expression::func_call(fc)
        }};
}

/// Return function call.
/// fc!("sqrt", 100)
macro_rules! fc {
        ($ident:expr, [ $( $expr:expr ),+], $lambda:expr ) => {
            crate::expression::FuncCall::new($ident, vec![ $( $expr ),+ ], Some($lambda))
        };
        ($ident:expr, $( $expr:expr ),+) => {
           crate::expression::FuncCall::new($ident, vec![ $( $expr ),+ ], None)
        };
}

/// Return node expression.
/// node!(10, '*', 20)
macro_rules! node {
    ($left:expr, $op:expr, $right:expr) => {
        crate::expression::Expression::ast(crate::expression::Node::new(
            crate::expression::Expression::from($left),
            crate::expression::Operator::try_from($op).unwrap(),
            crate::expression::Expression::from($right),
        ))
    };
}

pub(crate) use cst;
pub(crate) use cst_exp;
pub(crate) use fc;
pub(crate) use fc_exp;
pub(crate) use lambda;
pub(crate) use lit;
pub(crate) use node;
pub(crate) use var;