Move the math expression parser from Pest to Chumsky and add more features (#2685)

Rewrite the math-parser library using a chumsky-based lexer and parser, adding functions, comparisons, logic, and conditionals

libraries/math-parser/src/ast.rs

@@ -37,7 +37,7 @@ impl Unit {
 	}
 }
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum Literal {
 	Float(f64),
 	Complex(Complex),
@@ -54,8 +54,19 @@ pub enum BinaryOp {
 	Add,
 	Sub,
 	Mul,
+	/// Logical AND (nonzero treated as true, returns 1. or 0.)
+	And,
 	Div,
+	/// Logical OR (nonzero treated as true, returns 1. or 0.)
+	Or,
+	Modulo,
 	Pow,
+	Leq,
+	Lt,
+	Geq,
+	Gt,
+	Neq,
+	Eq,
 }
 
 #[derive(Debug, PartialEq, Clone, Copy)]
@@ -63,6 +74,7 @@ pub enum UnaryOp {
 	Neg,
 	Sqrt,
 	Fac,
+	Not,
 }
 
 #[derive(Debug, PartialEq)]
@@ -72,4 +84,5 @@ pub enum Node {
 	FnCall { name: String, expr: Vec<Node> },
 	BinOp { lhs: Box<Node>, op: BinaryOp, rhs: Box<Node> },
 	UnaryOp { expr: Box<Node>, op: UnaryOp },
+	Conditional { condition: Box<Node>, if_block: Box<Node>, else_block: Box<Node> },
 }