devalang_wasm/engine/audio/evaluator/
mod.rs

1/// Expression evaluator - evaluates conditions and expressions at runtime
2use crate::language::syntax::ast::Value;
3use std::collections::HashMap;
4
5/// Evaluate a condition expression
6pub fn evaluate_condition(condition: &Value, _context: &HashMap<String, Value>) -> bool {
7    match condition {
8        Value::Boolean(b) => *b,
9        Value::Number(n) => *n != 0.0,
10        Value::String(s) | Value::Identifier(s) => !s.is_empty(),
11        Value::Null => false,
12        _ => true,
13    }
14}
15
16/// Evaluate a numeric expression
17pub fn evaluate_number(expr: &Value, context: &HashMap<String, Value>) -> f32 {
18    match expr {
19        Value::Number(n) => *n,
20        Value::Identifier(name) => {
21            if let Some(val) = context.get(name) {
22                evaluate_number(val, context)
23            } else {
24                0.0
25            }
26        }
27        Value::String(s) => s.parse::<f32>().unwrap_or(0.0),
28        Value::Boolean(b) => {
29            if *b {
30                1.0
31            } else {
32                0.0
33            }
34        }
35        _ => 0.0,
36    }
37}
38
39#[cfg(test)]
40mod tests {
41    use super::*;
42
43    #[test]
44    fn test_evaluate_condition_boolean() {
45        let ctx = HashMap::new();
46        assert!(evaluate_condition(&Value::Boolean(true), &ctx));
47        assert!(!evaluate_condition(&Value::Boolean(false), &ctx));
48    }
49
50    #[test]
51    fn test_evaluate_number() {
52        let mut ctx = HashMap::new();
53        ctx.insert("x".to_string(), Value::Number(42.0));
54
55        let result = evaluate_number(&Value::Identifier("x".to_string()), &ctx);
56        assert!((result - 42.0).abs() < f32::EPSILON);
57    }
58}
devalang_wasm/engine/audio/evaluator/mod.rs

devalang_wasm/engine/audio/evaluator/
mod.rs
