# Dictionary Syntax Implementation Status

## Completed: Dictionary Syntax with Newline-Separated Key:Value Pairs

### Syntax
```ac
dict = {
    key1: value1
    key2: value2
    key3: value3
}
```

### Implementation Details

1. **Lexer** - Added `COLON` token type for `:` operator
2. **Parser** - Added `DictLiteral` node type and parsing logic in `parseTupleLiteral()`
   - Detects dict vs tuple by looking ahead for `:` token
   - Handles newline-separated entries (NOT comma-separated as user specified)
   - Properly handles INDENT/DEDENT tokens within dict literals
3. **AST** - Added `NodeType::DictLiteral` to represent dictionary literals

### Backend Support Status

#### ✅ Python (COMPLETE)
- Generates: `dict = {"key1": "value1", "key2": "value2", "key3": "value3"}  # dict`
- Added `parseDictItems()` function
- Fixed `import sys` to always be included
- Tested and working

#### ✅ JavaScript (COMPLETE)
- Generates: `let dict = {"key1": "value1", "key2": "value2", "key3": "value3"};  // dict`
- Added `parseDictItems()` function
- Tested and working

#### ⚠️ Go (PARTIAL - needs map implementation)
- Needs: `map[string]interface{}{"key1": "value1", ...}`
- parseDictItems() function needs to be added

#### ⚠️ Rust (PARTIAL - needs HashMap implementation)
- Needs: `HashMap::from([("key1", "value1"), ...])`
- parseDictItems() function needs to be added

#### ⚠️ C++ (PARTIAL - needs std::map implementation)
- Needs: `map<string, string> dict = {{"key1", "value1"}, ...}`
- parseDictItems() function needs to be added

#### ⚠️ C (PARTIAL - no native dict support)
- C doesn't have native dictionaries
- Could use struct arrays or comment out with warning

#### ⚠️ V (NOT STARTED)
- Needs: `map[string]string{"key1": "value1", ...}`

#### ⚠️ Java (NOT STARTED)
- Needs: `Map<String, String> dict = Map.of("key1", "value1", ...)`

#### ⚠️ HTML (NOT STARTED)
- JavaScript object literal in <script> tag

#### ⚠️ ASM (NOT STARTED)
- No native dict support, would need custom implementation

### Files Modified
- `ac-compiler/include/token.hpp` - Added COLON token
- `ac-compiler/src/lexer.cpp` - Added `:` lexing
- `ac-compiler/include/ast.hpp` - Added DictLiteral node type
- `ac-compiler/src/parser.cpp` - Added dict parsing logic
- `ac-compiler/src/codegen_py.cpp` - Added dict support + parseDictItems()
- `ac-compiler/src/codegen_js.cpp` - Added dict support + parseDictItems()

### Test Files
- `test_dict.ac` - Newline-separated dict test (Python)
- `test_dict_js.ac` - Newline-separated dict test (JavaScript)
- Both tests pass successfully

### Next Steps
1. Add parseDictItems() to remaining 8 backends
2. Implement proper dict/map syntax for each backend
3. Test all backends with dict syntax
4. Handle edge cases (empty dicts, nested dicts, etc.)
