github.com/joomcode/cue@v0.4.4-0.20221111115225-539fe3512047/cue/testdata/definitions/embed.txtar

-- in.cue --
deployment: [string]: #Deployment

deployment: foo: spec: replicas: 1

#Deployment: {
	#TypeMeta

	spec: #Spec
}

#Spec: replicas: int

#TypeMeta: {}

recloseSimple: {
	#foo: {}
	a: {#foo} & {b: int}
}

// Reclosing
reclose1: {
	#D: {
		x: int
		y: int
	}
	#a: {
		#D
		b: {
			c: int
		}
	}

	z: #a.b
	z: d: 3 // don't allow this
}

reclose2: {
	#D: {
		x: int
		y: int
	}
	a: {
		#D
		b: {// keep open
			c: int
		}
	}

	z: a.b
	z: d: 3 // allow this
}

reclose3: {
	#Step: {
		(#A | #B)
		#Common
	}
	#Common: {
		Name: string
	}
	#A: {
		#Common
		Something: int
	}
	#B: {
		#Common
		Else: int
	}
	x: #Step
	x: #A & {
		Name:      "a"
		Something: 4
	}
}
-- out/eval --
Errors:
reclose1.z: field not allowed: d:
    ./in.cue:28:6
    ./in.cue:33:5
    ./in.cue:34:5
recloseSimple.a: field not allowed: b:
    ./in.cue:16:8
    ./in.cue:17:5
    ./in.cue:17:6
    ./in.cue:17:15

Result:
(_|_){
  // [eval]
  deployment: (struct){
    foo: (#struct){
      spec: (#struct){
        replicas: (int){ 1 }
      }
    }
  }
  #Deployment: (#struct){
    spec: (#struct){
      replicas: (int){ int }
    }
  }
  #Spec: (#struct){
    replicas: (int){ int }
  }
  #TypeMeta: (#struct){
  }
  recloseSimple: (_|_){
    // [eval]
    #foo: (#struct){
    }
    a: (_|_){
      // [eval]
      b: (_|_){
        // [eval] recloseSimple.a: field not allowed: b:
        //     ./in.cue:16:8
        //     ./in.cue:17:5
        //     ./in.cue:17:6
        //     ./in.cue:17:15
      }
    }
  }
  reclose1: (_|_){
    // [eval]
    #D: (#struct){
      x: (int){ int }
      y: (int){ int }
    }
    #a: (#struct){
      x: (int){ int }
      y: (int){ int }
      b: (#struct){
        c: (int){ int }
      }
    }
    z: (_|_){
      // [eval]
      c: (int){ int }
      d: (_|_){
        // [eval] reclose1.z: field not allowed: d:
        //     ./in.cue:28:6
        //     ./in.cue:33:5
        //     ./in.cue:34:5
      }
    }
  }
  reclose2: (struct){
    #D: (#struct){
      x: (int){ int }
      y: (int){ int }
    }
    a: (#struct){
      x: (int){ int }
      y: (int){ int }
      b: (struct){
        c: (int){ int }
      }
    }
    z: (struct){
      c: (int){ int }
      d: (int){ 3 }
    }
  }
  reclose3: (struct){
    #Step: (#struct){ |((#struct){
        Name: (string){ string }
        Something: (int){ int }
      }, (#struct){
        Name: (string){ string }
        Else: (int){ int }
      }) }
    #Common: (#struct){
      Name: (string){ string }
    }
    #A: (#struct){
      Name: (string){ string }
      Something: (int){ int }
    }
    #B: (#struct){
      Name: (string){ string }
      Else: (int){ int }
    }
    x: (#struct){
      Name: (string){ "a" }
      Something: (int){ 4 }
    }
  }
}
-- out/compile --
--- in.cue
{
  deployment: {
    [string]: 〈1;#Deployment〉
  }
  deployment: {
    foo: {
      spec: {
        replicas: 1
      }
    }
  }
  #Deployment: {
    〈1;#TypeMeta〉
    spec: 〈1;#Spec〉
  }
  #Spec: {
    replicas: int
  }
  #TypeMeta: {}
  recloseSimple: {
    #foo: {}
    a: ({
      〈1;#foo〉
    } & {
      b: int
    })
  }
  reclose1: {
    #D: {
      x: int
      y: int
    }
    #a: {
      〈1;#D〉
      b: {
        c: int
      }
    }
    z: 〈0;#a〉.b
    z: {
      d: 3
    }
  }
  reclose2: {
    #D: {
      x: int
      y: int
    }
    a: {
      〈1;#D〉
      b: {
        c: int
      }
    }
    z: 〈0;a〉.b
    z: {
      d: 3
    }
  }
  reclose3: {
    #Step: {
      (〈1;#A〉|〈1;#B〉)
      〈1;#Common〉
    }
    #Common: {
      Name: string
    }
    #A: {
      〈1;#Common〉
      Something: int
    }
    #B: {
      〈1;#Common〉
      Else: int
    }
    x: 〈0;#Step〉
    x: (〈0;#A〉 & {
      Name: "a"
      Something: 4
    })
  }
}