metabuilder/packages/json_script_example/seed/math_utils.json

{
  "schema_version": "2.1.0",
  "package": "json_script_example",
  "description": "Math utility functions",

  "exports": {
    "functions": ["add", "subtract", "multiply", "divide", "clamp"],
    "constants": ["PI", "E"]
  },

  "constants": [
    {
      "id": "pi_const",
      "name": "PI",
      "value": 3.14159265359,
      "type": "number",
      "exported": true
    },
    {
      "id": "e_const",
      "name": "E",
      "value": 2.71828182846,
      "type": "number",
      "exported": true
    }
  ],

  "functions": [
    {
      "id": "add_fn",
      "name": "add",
      "description": "Add two numbers",
      "exported": true,
      "params": [
        {"name": "a", "type": "number"},
        {"name": "b", "type": "number"}
      ],
      "returnType": "number",
      "body": [
        {
          "type": "return",
          "value": {
            "type": "binary_expression",
            "left": "$ref:params.a",
            "operator": "+",
            "right": "$ref:params.b"
          }
        }
      ]
    },
    {
      "id": "subtract_fn",
      "name": "subtract",
      "description": "Subtract two numbers",
      "exported": true,
      "params": [
        {"name": "a", "type": "number"},
        {"name": "b", "type": "number"}
      ],
      "returnType": "number",
      "body": [
        {
          "type": "return",
          "value": {
            "type": "binary_expression",
            "left": "$ref:params.a",
            "operator": "-",
            "right": "$ref:params.b"
          }
        }
      ]
    },
    {
      "id": "multiply_fn",
      "name": "multiply",
      "description": "Multiply two numbers",
      "exported": true,
      "params": [
        {"name": "a", "type": "number"},
        {"name": "b", "type": "number"}
      ],
      "returnType": "number",
      "body": [
        {
          "type": "return",
          "value": {
            "type": "binary_expression",
            "left": "$ref:params.a",
            "operator": "*",
            "right": "$ref:params.b"
          }
        }
      ]
    },
    {
      "id": "divide_fn",
      "name": "divide",
      "description": "Divide two numbers",
      "exported": true,
      "params": [
        {"name": "a", "type": "number"},
        {"name": "b", "type": "number"}
      ],
      "returnType": "number",
      "body": [
        {
          "type": "comment",
          "text": "Check for division by zero"
        },
        {
          "type": "if_statement",
          "condition": {
            "type": "binary_expression",
            "left": "$ref:params.b",
            "operator": "==",
            "right": 0
          },
          "then": [
            {
              "type": "return",
              "value": null
            }
          ]
        },
        {
          "type": "return",
          "value": {
            "type": "binary_expression",
            "left": "$ref:params.a",
            "operator": "/",
            "right": "$ref:params.b"
          }
        }
      ]
    },
    {
      "id": "clamp_fn",
      "name": "clamp",
      "description": "Clamp a value between min and max",
      "exported": true,
      "params": [
        {"name": "value", "type": "number"},
        {"name": "min", "type": "number"},
        {"name": "max", "type": "number"}
      ],
      "returnType": "number",
      "body": [
        {
          "type": "comment",
          "text": "If value < min, return min"
        },
        {
          "type": "if_statement",
          "condition": {
            "type": "binary_expression",
            "left": "$ref:params.value",
            "operator": "<",
            "right": "$ref:params.min"
          },
          "then": [
            {
              "type": "return",
              "value": "$ref:params.min"
            }
          ]
        },
        {
          "type": "comment",
          "text": "If value > max, return max"
        },
        {
          "type": "if_statement",
          "condition": {
            "type": "binary_expression",
            "left": "$ref:params.value",
            "operator": ">",
            "right": "$ref:params.max"
          },
          "then": [
            {
              "type": "return",
              "value": "$ref:params.max"
            }
          ]
        },
        {
          "type": "comment",
          "text": "Otherwise return value"
        },
        {
          "type": "return",
          "value": "$ref:params.value"
        }
      ]
    }
  ]
}