67 lines
3.0 KiB
Rust
67 lines
3.0 KiB
Rust
|
use super::*;
|
||
|
|
use crate::box_trait::SharedNyashBox;
|
||
|
|
|
||
|
|
impl NyashInterpreter {
|
||
|
|
/// コンストラクタを実行 - Constructor execution
|
||
|
|
pub(super) fn execute_constructor(
|
||
|
|
&mut self,
|
||
|
|
instance: &SharedNyashBox,
|
||
|
|
constructor: &ASTNode,
|
||
|
|
arguments: &[ASTNode],
|
||
|
|
box_decl: &BoxDeclaration
|
||
|
|
) -> Result<(), RuntimeError> {
|
||
|
|
if let ASTNode::FunctionDeclaration { name: _, params, body, .. } = constructor {
|
||
|
|
let mut arg_values = Vec::new();
|
||
|
|
for arg in arguments { arg_values.push(self.execute_expression(arg)?); }
|
||
|
|
if params.len() != arg_values.len() {
|
||
|
|
return Err(RuntimeError::InvalidOperation {
|
||
|
|
message: format!("Constructor expects {} arguments, got {}", params.len(), arg_values.len()),
|
||
|
|
});
|
||
|
|
}
|
||
|
|
let saved_locals = self.save_local_vars();
|
||
|
|
self.local_vars.clear();
|
||
|
|
for (param, value) in params.iter().zip(arg_values.iter()) {
|
||
|
|
self.declare_local_variable(param, value.clone_or_share());
|
||
|
|
}
|
||
|
|
self.declare_local_variable("me", instance.clone_or_share());
|
||
|
|
let old_context = self.current_constructor_context.clone();
|
||
|
|
self.current_constructor_context = Some(ConstructorContext {
|
||
|
|
class_name: box_decl.name.clone(),
|
||
|
|
parent_class: box_decl.extends.first().cloned(),
|
||
|
|
});
|
||
|
|
let mut result = Ok(());
|
||
|
|
for statement in body.iter() {
|
||
|
|
if let Err(e) = self.execute_statement(statement) { result = Err(e); break; }
|
||
|
|
}
|
||
|
|
self.restore_local_vars(saved_locals);
|
||
|
|
self.current_constructor_context = old_context;
|
||
|
|
result
|
||
|
|
} else {
|
||
|
|
Err(RuntimeError::InvalidOperation { message: "Invalid constructor node".to_string() })
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/// 親コンストラクタを実行 - Parent constructor execution
|
||
|
|
pub(crate) fn execute_parent_constructor(&mut self, parent_class: &str, arguments: &[ASTNode])
|
||
|
|
-> Result<Box<dyn NyashBox>, RuntimeError> {
|
||
|
|
let parent_decl = {
|
||
|
|
let box_decls = self.shared.box_declarations.read().unwrap();
|
||
|
|
box_decls.get(parent_class)
|
||
|
|
.ok_or(RuntimeError::UndefinedClass { name: parent_class.to_string() })?
|
||
|
|
.clone()
|
||
|
|
};
|
||
|
|
let birth_key = format!("birth/{}", arguments.len());
|
||
|
|
if let Some(parent_constructor) = parent_decl.constructors.get(&birth_key) {
|
||
|
|
let this_instance = self.resolve_variable("me").map_err(|_| RuntimeError::InvalidOperation {
|
||
|
|
message: "'this' not available in parent constructor call".to_string(),
|
||
|
|
})?;
|
||
|
|
self.execute_constructor(&this_instance, parent_constructor, arguments, &parent_decl)?;
|
||
|
|
Ok(Box::new(VoidBox::new()))
|
||
|
|
} else {
|
||
|
|
Err(RuntimeError::InvalidOperation {
|
||
|
|
message: format!("No constructor found for parent class {} with {} arguments", parent_class, arguments.len()),
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|