Implement conditional blocks

forge-script-lang/src/runtime/executor/simple.rs

@@ -149,7 +149,7 @@ impl Visitor for SimpleExecutor {
 				}
 			}
 			ValueExpression::Grouped(group) => self.evaluate_value_expression(group.inner.as_ref()),
-			ValueExpression::Block(_) => Err(RuntimeError::Unsupported("Block")),
+			ValueExpression::Block(block) => self.evaluate_expression_list(block),
 			ValueExpression::Literal(lit) => Ok(ForgeValue::from(lit.clone())),
 			ValueExpression::DeclareIdentifier(decl) => match decl {
 				DeclareIdent::WithValue(assignment) => {
@@ -161,9 +161,27 @@ impl Visitor for SimpleExecutor {
 					Ok(ForgeValue::Null)
 				}
 			},
-			ValueExpression::Assignment(_) => Err(RuntimeError::Unsupported("Assignment")),
-			ValueExpression::ConditionalBlock(_) => {
-				Err(RuntimeError::Unsupported("ConditionalBlock"))
+			ValueExpression::Assignment(assign) => self.process_assignment(assign),
+			ValueExpression::ConditionalBlock(condition) => {
+				let mut has_found = false;
+				let mut last_value = ForgeValue::Null;
+
+				for block in condition.blocks.iter() {
+					let guard_val = self.evaluate_value_expression(block.guard.as_ref())?;
+					if guard_val.as_bool() {
+						has_found = true;
+						last_value = self.evaluate_expression_list(&block.block)?;
+						break;
+					}
+				}
+
+				if !has_found {
+					if let Some(value) = &condition.fallback {
+						last_value = self.evaluate_expression_list(value)?;
+					}
+				}
+
+				Ok(last_value)
 			}
 			ValueExpression::Identifier(ident) => self
 				.get_variable(ident)

forge-script-lang/src/runtime/value.rs

@@ -359,13 +359,7 @@ impl Not for ForgeValue {
 	type Output = ForgeValue;
 
 	fn not(self) -> Self::Output {
-		match self {
-			ForgeValue::Number(num) => (num != Number::Integer(0)).into(),
-			ForgeValue::Boolean(b) => (!b).into(),
-			ForgeValue::String(st) => (!st.is_empty()).into(),
-			ForgeValue::List(ls) => (!ls.is_empty()).into(),
-			ForgeValue::Null => ForgeValue::Null,
-		}
+		ForgeValue::Boolean(!self.as_bool())
 	}
 }