version: 0
interfaces:
  - name: env.canvas
    box: Canvas
    methods:
      - name: fillRect
        params:
          - { string: canvas_id }
          - { i32: x }
          - { i32: y }
          - { i32: w }
          - { i32: h }
          - { string: color }
        returns: void
        effect: io

      - name: fillText
        params:
          - { string: canvas_id }
          - { string: text }
          - { i32: x }
          - { i32: y }
          - { string: font }
          - { string: color }
        returns: void
        effect: io