Move the math expression parser from Pest to Chumsky and add more features

frontend/wasm/src/editor_api.rs

@@ -964,7 +964,6 @@ pub fn evaluate_math_expression(expression: &str) -> Option<f64> {
 	let value = math_parser::evaluate(expression)
 		.inspect_err(|err| error!("Math parser error on \"{expression}\": {err}"))
 		.ok()?
-		.0
 		.inspect_err(|err| error!("Math evaluate error on \"{expression}\": {err} "))
 		.ok()?;
 	let Some(real) = value.as_real() else {

libraries/math-parser/Cargo.toml

@@ -8,11 +8,10 @@ description = "Parser for Graphite style mathematics expressions"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-pest = "2.7"
-pest_derive = "2.7.11"
 thiserror = "2.0"
 lazy_static = "1.5"
 num-complex = "0.4"
+chumsky = { version = "0.10", default-features = false, features = ["std"] }
 
 [dev-dependencies]
 criterion = "0.5"

libraries/math-parser/benches/bench.rs

@@ -16,7 +16,7 @@ macro_rules! generate_benchmarks {
 
 		fn evaluation_bench(c: &mut Criterion) {
 			$(
-				let expr = ast::Node::try_parse_from_str($input).unwrap().0;
+				let expr = ast::Node::try_parse_from_str($input).unwrap();
 				let context = EvalContext::default();
 
 				c.bench_function(concat!("eval ", $input), |b| {

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),
@@ -56,6 +56,11 @@ pub enum BinaryOp {
 	Mul,
 	Div,
 	Pow,
+	Leq,
+	Lt,
+	Geq,
+	Gt,
+	Eq,
 }
 
 #[derive(Debug, PartialEq, Clone, Copy)]
@@ -72,4 +77,5 @@ 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> },
 }