YUL ast output from Solidity

yulast.json

{
  "AST": {
    "nodeType": "YulBlock",
    "src": "355:175:0",
    "statements": [
      {
        "nodeType": "YulVariableDeclaration",
        "src": "369:22:0",
        "value": {
          "arguments": [
            {
              "name": "data",
              "nodeType": "YulIdentifier",
              "src": "386:4:0"
            }
          ],
          "functionName": {
            "name": "mload",
            "nodeType": "YulIdentifier",
            "src": "380:5:0"
          },
          "nodeType": "YulFunctionCall",
          "src": "380:11:0"
        },
        "variables": [
          {
            "name": "len",
            "nodeType": "YulTypedName",
            "src": "373:3:0",
            "type": ""
          }
        ]
      },
      {
        "body": {
          "nodeType": "YulBlock",
          "src": "479:41:0",
          "statements": [
            {
              "expression": {
                "arguments": [],
                "functionName": {
                  "name": "invalid",
                  "nodeType": "YulIdentifier",
                  "src": "497:7:0"
                },
                "nodeType": "YulFunctionCall",
                "src": "497:9:0"
              },
              "nodeType": "YulExpressionStatement",
              "src": "497:9:0"
            }
          ]
        },
        "condition": {
          "arguments": [
            {
              "arguments": [
                {
                  "arguments": [],
                  "functionName": {
                    "name": "gas",
                    "nodeType": "YulIdentifier",
                    "src": "419:3:0"
                  },
                  "nodeType": "YulFunctionCall",
                  "src": "419:5:0"
                },
                {
                  "kind": "number",
                  "nodeType": "YulLiteral",
                  "src": "426:4:0",
                  "type": "",
                  "value": "0x04"
                },
                {
                  "kind": "number",
                  "nodeType": "YulLiteral",
                  "src": "432:1:0",
                  "type": "",
                  "value": "0"
                },
                {
                  "arguments": [
                    {
                      "name": "data",
                      "nodeType": "YulIdentifier",
                      "src": "439:4:0"
                    },
                    {
                      "kind": "number",
                      "nodeType": "YulLiteral",
                      "src": "445:4:0",
                      "type": "",
                      "value": "0x20"
                    }
                  ],
                  "functionName": {
                    "name": "add",
                    "nodeType": "YulIdentifier",
                    "src": "435:3:0"
                  },
                  "nodeType": "YulFunctionCall",
                  "src": "435:15:0"
                },
                {
                  "name": "len",
                  "nodeType": "YulIdentifier",
                  "src": "452:3:0"
                },
                {
                  "arguments": [
                    {
                      "name": "ret",
                      "nodeType": "YulIdentifier",
                      "src": "461:3:0"
                    },
                    {
                      "kind": "number",
                      "nodeType": "YulLiteral",
                      "src": "466:4:0",
                      "type": "",
                      "value": "0x20"
                    }
                  ],
                  "functionName": {
                    "name": "add",
                    "nodeType": "YulIdentifier",
                    "src": "457:3:0"
                  },
                  "nodeType": "YulFunctionCall",
                  "src": "457:14:0"
                },
                {
                  "name": "len",
                  "nodeType": "YulIdentifier",
                  "src": "473:3:0"
                }
              ],
              "functionName": {
                "name": "call",
                "nodeType": "YulIdentifier",
                "src": "414:4:0"
              },
              "nodeType": "YulFunctionCall",
              "src": "414:63:0"
            }
          ],
          "functionName": {
            "name": "iszero",
            "nodeType": "YulIdentifier",
            "src": "407:6:0"
          },
          "nodeType": "YulFunctionCall",
          "src": "407:71:0"
        },
        "nodeType": "YulIf",
        "src": "404:2:0"
      }
    ]
  },
  "evmVersion": "istanbul",
  "externalReferences": [
    {
      "declaration": 33,
      "isOffset": false,
      "isSlot": false,
      "src": "386:4:0",
      "valueSize": 1
    },
    {
      "declaration": 33,
      "isOffset": false,
      "isSlot": false,
      "src": "439:4:0",
      "valueSize": 1
    },
    {
      "declaration": 39,
      "isOffset": false,
      "isSlot": false,
      "src": "461:3:0",
      "valueSize": 1
    }
  ],
  "id": 46,
  "nodeType": "InlineAssembly",
  "src": "346:184:0"
}