5. Header Sections

The current component header sections are:

inputs
locals
outputs
globals

Example:

recipe {
  inputs {
    env
  }

  locals {
    result
  }

  outputs {
    result
  }

  globals {
    shared_value type=string access=read
  }
}

globals is optional. A component that does not use shared global values does not need a globals section.

5.1 Header Declaration Shape

A header declaration entry uses property-style declaration syntax.

Current canonical forms are:

<name> type=<type>?
<name> type=<type>? default=<scalar-or-string-literal>?
<name> type=<type>? access=read|write|readwrite

Rules:

• declaration names must be bare identifiers
• declaration names must be unique within the same header section
• default is allowed for inputs and locals
• for inputs and locals, default may be a scalar literal or a supported KAL string literal
• inline object and array literals are not part of the current declaration-default surface
• default is not allowed for outputs
• access is required for globals
• unsupported declaration properties fail validation

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