compilation_unit {
  package_statement {
    package_name: "Foo"
  }
  is_api: true
  declarations {
    choice {
      name {
        name: "Choice"
      }
      alternatives {
        name: "Alternative"
        signature {
        }
      }
    }
  }
  declarations {
    class_declaration {
      name {
        name: "Class"
      }
      members {
        function {
          name {
            name: "F"
          }
          param_pattern {
            fields {
              binding_pattern {
                name: "n"
                type {
                  expression_pattern {
                    expression {
                      int_type_literal {
                      }
                    }
                  }
                }
              }
            }
          }
          return_term {
            kind: Expression
            type {
              int_type_literal {
              }
            }
          }
          body {
            statements {
              return_expression_statement {
                expression {
                  operator {
                    op: Add
                    arguments {
                      identifier {
                        name: "n"
                      }
                    }
                    arguments {
                      int_literal {
                        value: 1
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    interface {
      name {
        name: "Interface"
      }
      members {
        function {
          name {
            name: "G"
          }
          self_pattern {
            binding_pattern {
              name: "self"
              type {
                expression_pattern {
                  expression {
                    identifier {
                      name: "Self"
                    }
                  }
                }
              }
            }
          }
          param_pattern {
          }
          return_term {
            kind: Expression
            type {
              identifier {
                name: "Self"
              }
            }
          }
        }
      }
    }
  }
  declarations {
    interface {
      name {
        name: "AnotherInterface"
      }
    }
  }
  declarations {
    impl {
      kind: InternalImpl
      impl_type {
        int_type_literal {
        }
      }
      interface {
        identifier {
          name: "Interface"
        }
      }
      members {
        function {
          name {
            name: "G"
          }
          self_pattern {
            binding_pattern {
              name: "self"
              type {
                expression_pattern {
                  expression {
                    int_type_literal {
                    }
                  }
                }
              }
            }
          }
          param_pattern {
          }
          return_term {
            kind: Expression
            type {
              int_type_literal {
              }
            }
          }
          body {
            statements {
              return_expression_statement {
                expression {
                  operator {
                    op: Add
                    arguments {
                      identifier {
                        name: "self"
                      }
                    }
                    arguments {
                      int_literal {
                        value: 1
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    impl {
      kind: InternalImpl
      impl_type {
        int_type_literal {
        }
      }
      interface {
        identifier {
          name: "AnotherInterface"
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "GetStruct"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          type_type_literal {
          }
        }
      }
      body {
        statements {
          return_expression_statement {
            expression {
              struct_type_literal {
                fields {
                  name: "n"
                  expression {
                    int_type_literal {
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "GetChoice"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          type_type_literal {
          }
        }
      }
      body {
        statements {
          return_expression_statement {
            expression {
              identifier {
                name: "Choice"
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "GetClass"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          type_type_literal {
          }
        }
      }
      body {
        statements {
          return_expression_statement {
            expression {
              identifier {
                name: "Class"
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "GetInterface"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          type_type_literal {
          }
        }
      }
      body {
        statements {
          return_expression_statement {
            expression {
              identifier {
                name: "Interface"
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "GetConstraint"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          type_type_literal {
          }
        }
      }
      body {
        statements {
          return_expression_statement {
            expression {
              operator {
                op: BitwiseAnd
                arguments {
                  identifier {
                    name: "Interface"
                  }
                }
                arguments {
                  identifier {
                    name: "AnotherInterface"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "TestStruct"
      }
      param_pattern {
      }
      return_term {
        kind: Omitted
      }
      body {
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "s"
                type {
                  expression_pattern {
                    expression {
                      call {
                        function {
                          identifier {
                            name: "GetStruct"
                          }
                        }
                        argument {
                          tuple_literal {
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
            init {
              struct_literal {
                fields {
                  name: "n"
                  expression {
                    int_literal {
                      value: 1
                    }
                  }
                }
              }
            }
            is_returned: false
          }
        }
        statements {
          if_statement {
            condition {
              operator {
                op: Eq
                arguments {
                  compound_member_access {
                    object {
                      identifier {
                        name: "s"
                      }
                    }
                    path {
                      simple_member_access {
                        field: "n"
                        object {
                          call {
                            function {
                              identifier {
                                name: "GetStruct"
                              }
                            }
                            argument {
                              tuple_literal {
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
                arguments {
                  int_literal {
                    value: 1
                  }
                }
              }
            }
            then_block {
              statements {
                expression_statement {
                  expression {
                    call {
                      function {
                        identifier {
                          name: "Print"
                        }
                      }
                      argument {
                        tuple_literal {
                          fields {
                            string_literal {
                              value: "Struct OK"
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "TestChoice"
      }
      param_pattern {
      }
      return_term {
        kind: Omitted
      }
      body {
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "c"
                type {
                  expression_pattern {
                    expression {
                      call {
                        function {
                          identifier {
                            name: "GetChoice"
                          }
                        }
                        argument {
                          tuple_literal {
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
            init {
              call {
                function {
                  simple_member_access {
                    field: "Alternative"
                    object {
                      call {
                        function {
                          identifier {
                            name: "GetChoice"
                          }
                        }
                        argument {
                          tuple_literal {
                          }
                        }
                      }
                    }
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
            is_returned: false
          }
        }
        statements {
          match {
            expression {
              identifier {
                name: "c"
              }
            }
            clauses {
              pattern {
                expression_pattern {
                  expression {
                    call {
                      function {
                        simple_member_access {
                          field: "Alternative"
                          object {
                            call {
                              function {
                                identifier {
                                  name: "GetChoice"
                                }
                              }
                              argument {
                                tuple_literal {
                                }
                              }
                            }
                          }
                        }
                      }
                      argument {
                        tuple_literal {
                        }
                      }
                    }
                  }
                }
              }
              statement {
                block {
                  statements {
                    expression_statement {
                      expression {
                        call {
                          function {
                            identifier {
                              name: "Print"
                            }
                          }
                          argument {
                            tuple_literal {
                              fields {
                                string_literal {
                                  value: "Choice OK"
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "TestClass"
      }
      param_pattern {
      }
      return_term {
        kind: Omitted
      }
      body {
        statements {
          if_statement {
            condition {
              operator {
                op: Eq
                arguments {
                  call {
                    function {
                      simple_member_access {
                        field: "F"
                        object {
                          call {
                            function {
                              identifier {
                                name: "GetClass"
                              }
                            }
                            argument {
                              tuple_literal {
                              }
                            }
                          }
                        }
                      }
                    }
                    argument {
                      tuple_literal {
                        fields {
                          int_literal {
                            value: 1
                          }
                        }
                      }
                    }
                  }
                }
                arguments {
                  int_literal {
                    value: 2
                  }
                }
              }
            }
            then_block {
              statements {
                expression_statement {
                  expression {
                    call {
                      function {
                        identifier {
                          name: "Print"
                        }
                      }
                      argument {
                        tuple_literal {
                          fields {
                            string_literal {
                              value: "Class OK"
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "TestInterface"
      }
      param_pattern {
      }
      return_term {
        kind: Omitted
      }
      body {
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "n"
                type {
                  expression_pattern {
                    expression {
                      int_type_literal {
                      }
                    }
                  }
                }
              }
            }
            init {
              int_literal {
                value: 1
              }
            }
            is_returned: false
          }
        }
        statements {
          if_statement {
            condition {
              operator {
                op: Eq
                arguments {
                  call {
                    function {
                      compound_member_access {
                        object {
                          identifier {
                            name: "n"
                          }
                        }
                        path {
                          simple_member_access {
                            field: "G"
                            object {
                              call {
                                function {
                                  identifier {
                                    name: "GetInterface"
                                  }
                                }
                                argument {
                                  tuple_literal {
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                    argument {
                      tuple_literal {
                      }
                    }
                  }
                }
                arguments {
                  int_literal {
                    value: 2
                  }
                }
              }
            }
            then_block {
              statements {
                expression_statement {
                  expression {
                    call {
                      function {
                        identifier {
                          name: "Print"
                        }
                      }
                      argument {
                        tuple_literal {
                          fields {
                            string_literal {
                              value: "Interface OK"
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "TestConstraint"
      }
      param_pattern {
      }
      return_term {
        kind: Omitted
      }
      body {
        statements {
          variable_definition {
            pattern {
              binding_pattern {
                name: "n"
                type {
                  expression_pattern {
                    expression {
                      int_type_literal {
                      }
                    }
                  }
                }
              }
            }
            init {
              int_literal {
                value: 1
              }
            }
            is_returned: false
          }
        }
        statements {
          if_statement {
            condition {
              operator {
                op: Eq
                arguments {
                  call {
                    function {
                      compound_member_access {
                        object {
                          identifier {
                            name: "n"
                          }
                        }
                        path {
                          simple_member_access {
                            field: "G"
                            object {
                              call {
                                function {
                                  identifier {
                                    name: "GetConstraint"
                                  }
                                }
                                argument {
                                  tuple_literal {
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                    argument {
                      tuple_literal {
                      }
                    }
                  }
                }
                arguments {
                  int_literal {
                    value: 2
                  }
                }
              }
            }
            then_block {
              statements {
                expression_statement {
                  expression {
                    call {
                      function {
                        identifier {
                          name: "Print"
                        }
                      }
                      argument {
                        tuple_literal {
                          fields {
                            string_literal {
                              value: "Constraint OK"
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  declarations {
    function {
      name {
        name: "Main"
      }
      param_pattern {
      }
      return_term {
        kind: Expression
        type {
          int_type_literal {
          }
        }
      }
      body {
        statements {
          expression_statement {
            expression {
              call {
                function {
                  identifier {
                    name: "TestStruct"
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
          }
        }
        statements {
          expression_statement {
            expression {
              call {
                function {
                  identifier {
                    name: "TestChoice"
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
          }
        }
        statements {
          expression_statement {
            expression {
              call {
                function {
                  identifier {
                    name: "TestClass"
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
          }
        }
        statements {
          expression_statement {
            expression {
              call {
                function {
                  identifier {
                    name: "TestInterface"
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
          }
        }
        statements {
          expression_statement {
            expression {
              call {
                function {
                  identifier {
                    name: "TestConstraint"
                  }
                }
                argument {
                  tuple_literal {
                  }
                }
              }
            }
          }
        }
        statements {
          return_expression_statement {
            expression {
              int_literal {
                value: 0
              }
            }
          }
        }
      }
    }
  }
}