# v3.54.0 Sprint Plan: Complete OOP Implementation with Extreme TDD

**Sprint Goal**: Achieve 100% working classes, actors, and structs with comprehensive test coverage
**Target Release Date**: End of sprint
**Methodology**: Extreme TDD - Write failing tests FIRST, then implement

## 📊 Current State Assessment

### Structs (85% → 100% target)
- **Working**: Basic definition, instantiation, field access
- **Missing**: Default values, visibility modifiers, pattern matching, derive attributes
- **Tests**: 25/26 passing → target 50/50

### Classes (60% → 100% target)
- **Working**: Basic definitions, constructors, simple methods, inheritance
- **Missing**: Properties, static methods, generic methods, trait implementations
- **Tests**: 10/17 passing → target 50/50

### Actors (20% → 100% target)
- **Working**: Basic parsing only
- **Missing**: Runtime, instantiation, message passing, spawn, receive handlers
- **Tests**: 4/17 passing → target 50/50

## 🎯 Sprint Phases with Extreme TDD

### Phase 1: Comprehensive Test Suite Creation (Days 1-2)
**MANDATORY**: Write ALL tests before ANY implementation

#### Struct Tests (25 new tests)
```rust
// tests/extreme_tdd_structs.rs
#[test]
fn test_struct_default_values() {
    let code = r#"
        struct Config {
            host: String = "localhost",
            port: i32 = 8080
        }
        let cfg = Config {}
        println(cfg.host)
    "#;
    let result = compile(code);
    assert!(result.is_ok());
    // MUST output "localhost"
}

#[test]
fn test_struct_visibility_modifiers() {
    let code = r#"
        struct User {
            pub name: String,
            pub(crate) id: i32,
            private secret: String
        }
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_struct_pattern_matching() {
    let code = r#"
        struct Point { x: f64, y: f64 }
        let p = Point { x: 1.0, y: 2.0 }
        match p {
            Point { x: 0.0, y } => println("on y-axis"),
            Point { x, y: 0.0 } => println("on x-axis"),
            Point { x, y } => println(f"at {x}, {y}")
        }
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_struct_derive_attributes() {
    let code = r#"
        #[derive(Debug, Clone, PartialEq)]
        struct User {
            name: String,
            age: i32
        }
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

// ... 21 more struct tests covering all edge cases
```

#### Class Tests (40 new tests)
```rust
// tests/extreme_tdd_classes.rs
#[test]
fn test_class_properties_with_getters_setters() {
    let code = r#"
        class Temperature {
            celsius: f64,

            property fahrenheit: f64 {
                get => self.celsius * 9.0/5.0 + 32.0,
                set(value) => self.celsius = (value - 32.0) * 5.0/9.0
            }
        }

        let t = Temperature { celsius: 0.0 }
        println(t.fahrenheit)  // Should print 32.0
        t.fahrenheit = 212.0
        println(t.celsius)     // Should print 100.0
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_class_static_methods_and_constants() {
    let code = r#"
        class Math {
            const PI: f64 = 3.14159

            static fn square(x: f64) -> f64 {
                x * x
            }

            static fn circle_area(radius: f64) -> f64 {
                Math::PI * Math::square(radius)
            }
        }

        println(Math::circle_area(5.0))
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_class_generic_methods() {
    let code = r#"
        class Container<T> {
            items: Vec<T>,

            fn add<U: Into<T>>(mut self, item: U) {
                self.items.push(item.into())
            }

            fn get(self, index: usize) -> Option<T> {
                self.items.get(index)
            }
        }
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_class_trait_implementation() {
    let code = r#"
        class Point {
            x: f64,
            y: f64,

            impl Display {
                fn fmt(self, f: Formatter) -> Result {
                    write!(f, "({}, {})", self.x, self.y)
                }
            }
        }
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

// ... 36 more class tests
```

#### Actor Tests (46 new tests)
```rust
// tests/extreme_tdd_actors.rs
#[test]
fn test_actor_instantiation_and_spawn() {
    let code = r#"
        actor Counter {
            count: i32 = 0
        }

        let counter = spawn Counter {}
        assert(counter.is_alive())
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_actor_message_passing() {
    let code = r#"
        actor Echo {
            receive {
                msg: String => {
                    println(f"Echo: {msg}")
                    sender ! msg
                }
            }
        }

        let echo = spawn Echo {}
        echo ! "Hello"
        let response = echo ? "Test"  // Send and wait for response
        assert(response == "Test")
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_actor_state_mutation() {
    let code = r#"
        actor Counter {
            mut count: i32 = 0,

            receive {
                Increment => self.count += 1,
                Decrement => self.count -= 1,
                GetCount => sender ! self.count
            }
        }

        let counter = spawn Counter {}
        counter ! Increment
        counter ! Increment
        let count = counter ? GetCount
        assert(count == 2)
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

#[test]
fn test_actor_supervision_tree() {
    let code = r#"
        actor Supervisor {
            children: Vec<ActorRef> = vec![],

            receive {
                SpawnChild(actor) => {
                    let child = spawn actor with supervisor: self
                    self.children.push(child)
                },
                ChildFailed(ref, error) => {
                    println(f"Child {ref} failed: {error}")
                    // Restart strategy
                    let new_child = spawn ref.actor_type()
                    self.children[ref.index] = new_child
                }
            }
        }
    "#;
    let result = compile(code);
    assert!(result.is_ok());
}

// ... 42 more actor tests
```

### Phase 2: Parser Implementation (Days 3-4)

#### Priority Order:
1. **Struct Parser Enhancements**
   - Add default value parsing in struct fields
   - Implement visibility modifier parsing
   - Add derive attribute parsing
   - Enable pattern matching support

2. **Class Parser Enhancements**
   - Implement property syntax with getters/setters
   - Add static method and constant parsing
   - Support generic method definitions
   - Parse trait implementations in class body

3. **Actor Parser Completion**
   - Fix receive handler parsing
   - Add message pattern matching
   - Implement spawn syntax
   - Support supervision options

### Phase 3: Runtime/Transpiler Implementation (Days 5-7)

#### Struct Runtime:
```rust
// src/backend/transpiler/structs.rs
fn transpile_struct_with_defaults(struct_def: &StructDef) -> String {
    // Generate Default impl for structs with default values
    let default_impl = generate_default_impl(struct_def);
    let struct_code = transpile_struct_basic(struct_def);
    format!("{}\n{}", struct_code, default_impl)
}

fn generate_pattern_match_for_struct(pattern: &Pattern) -> String {
    // Generate Rust pattern matching code
    match pattern {
        Pattern::Struct { name, fields } => {
            // ... implement struct destructuring
        }
    }
}
```

#### Class Runtime:
```rust
// src/runtime/eval_class.rs
fn eval_class_property(
    instance: &mut Value,
    property: &Property,
    operation: PropertyOp
) -> Result<Value> {
    match operation {
        PropertyOp::Get => eval_property_getter(instance, property),
        PropertyOp::Set(value) => eval_property_setter(instance, property, value),
    }
}

fn eval_static_method(
    class_name: &str,
    method_name: &str,
    args: &[Value]
) -> Result<Value> {
    // Look up static method in class metadata
    // Execute without instance context
}
```

#### Actor Runtime:
```rust
// src/runtime/actor_system.rs
pub struct ActorSystem {
    actors: HashMap<ActorId, ActorState>,
    mailboxes: HashMap<ActorId, VecDeque<Message>>,
    supervisor_tree: HashMap<ActorId, ActorId>,
}

impl ActorSystem {
    pub fn spawn(&mut self, actor_def: ActorDef) -> ActorRef {
        let id = ActorId::new();
        let state = ActorState::from_def(actor_def);
        self.actors.insert(id, state);
        self.mailboxes.insert(id, VecDeque::new());
        ActorRef { id }
    }

    pub fn send(&mut self, target: ActorId, message: Message) {
        if let Some(mailbox) = self.mailboxes.get_mut(&target) {
            mailbox.push_back(message);
            self.process_messages(target);
        }
    }

    fn process_messages(&mut self, actor_id: ActorId) {
        while let Some(msg) = self.mailboxes[&actor_id].pop_front() {
            if let Some(actor) = self.actors.get_mut(&actor_id) {
                actor.handle_message(msg);
            }
        }
    }
}
```

### Phase 4: Integration & Property Testing (Day 8)

```rust
// tests/property_tests_oop.rs
proptest! {
    #[test]
    fn test_struct_roundtrip(s: StructDef) {
        let rust_code = transpile_struct(&s);
        let compiled = compile_rust(&rust_code);
        prop_assert!(compiled.is_ok());
    }

    #[test]
    fn test_actor_message_ordering(messages: Vec<Message>) {
        let actor = spawn_test_actor();
        for msg in &messages {
            actor.send(msg.clone());
        }
        let received = actor.get_received_messages();
        prop_assert_eq!(messages, received);
    }
}
```

### Phase 5: Validation & Release (Day 9)

#### Pre-release Checklist:
- [ ] All 150 new tests passing
- [ ] No P0 regressions (15/15 still pass)
- [ ] Property tests with 10,000 iterations
- [ ] Fuzz testing for parser robustness
- [ ] Documentation for new features
- [ ] CHANGELOG.md updated
- [ ] Version bumped to 3.54.0

#### Release Process:
```bash
# 1. Run full validation
make test
make lint
cargo test --all-features

# 2. Update version
# Cargo.toml: version = "3.54.0"

# 3. Update CHANGELOG
echo "## v3.54.0 - Complete OOP Implementation

Features:
- Full struct support with defaults, visibility, pattern matching
- Complete class implementation with properties, static methods
- Actor system with message passing and supervision
- 150+ new tests, 100% OOP feature coverage

" >> CHANGELOG.md

# 4. Commit and tag
git add -A
git commit -m "[RELEASE] v3.54.0 - Complete OOP Implementation with Extreme TDD"
git tag v3.54.0

# 5. Publish
cargo publish
```

## 📋 Daily Standup Topics

**Day 1**: Write all struct tests (failing)
**Day 2**: Write all class and actor tests (failing)
**Day 3**: Implement struct parser fixes
**Day 4**: Implement class and actor parser fixes
**Day 5**: Implement struct runtime
**Day 6**: Implement class runtime
**Day 7**: Implement actor runtime
**Day 8**: Integration testing and property tests
**Day 9**: Final validation and crates.io release

## 🎯 Success Metrics

- ✅ 150/150 new tests passing
- ✅ 100% struct features working
- ✅ 100% class features working
- ✅ 100% actor features working
- ✅ No regressions in existing tests
- ✅ Published to crates.io as v3.54.0

## 🔴 Risk Mitigation

1. **Actor runtime complexity**: Start with basic message passing, defer advanced features
2. **Parser ambiguity**: Use explicit keywords (property, static, spawn)
3. **Breaking changes**: Maintain backward compatibility, use feature flags if needed
4. **Time constraints**: Prioritize core features, defer nice-to-haves

## 🏁 Definition of Done

- All tests pass
- Code review complete
- Documentation updated
- No clippy warnings
- Published to crates.io
- Announcement prepared