PT006 (micro test)

{
  "@context": "https://nxdlang.org/schema",
  "doc_id": "PT006",
  "title": "",
  "description": "NXD Compiler Testing Notes - Nim",
  "layer": "Passed Tests",
  "category": "Passed Tests",
  "keywords": [Transpilation, Compiler, Nim], 
  "doc_version": "1.0",
  "status": "active"
}

# PT006 (micro test)

### NXD Sample:

```json
{
  "module": {
    "name": "TEST",
    "imports": []
  },
  "types": [],
  "traits": [],
  "impls": [],
  "functions": [
    {
      "name": "MAIN",
      "params": [],
      "return_type": null,
      "body": [
        {
          "Return": {
            "Binary": {
              "kind": "ADD",
              "left": {
                "Literal": {
                  "Int": 1
                }
              },
              "right": {
                "Literal": {
                  "Int": 2
                }
              }
            }
          }
        }
      ]
    }
  ],
  "statements": []
}
```    

### Result:

PASS

Expected Output:

### Actual Output:

(st006_rust.nim)
```nim
# test


proc main() =
  return 1 + 2
```

### Notes:

Verified Python frontend parsed binary expression.
Verified AST → IR lowering for ADD.
Verified IR JSON serialization for nested expression nodes.
Verified Rust successfully deserialized:
IRBinaryOp
IRExpr::Binary
IRExpr::Literal
Verified operator mapping:
ADD → +
Verified Nim backend emitted valid infix expression syntax.
Confirmed expression tree survived Python → JSON → Rust → Nim translation without structural loss.

#### Technical Significance:

First successful expression-tree validation.
Demonstrates nested IR deserialization.
Validates backend operator translation layer.
Establishes foundation for more complex expression handling (precedence, nesting, function calls, variables, pipelines).