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type_none.go
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type_none.go
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// Copyright 2016-2020, Pulumi Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package model
import (
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/hcl/v2/hclsyntax"
"github.com/pulumi/pulumi/pkg/v2/codegen/hcl2/syntax"
)
type noneType int
func (noneType) SyntaxNode() hclsyntax.Node {
return syntax.None
}
func (noneType) Traverse(traverser hcl.Traverser) (Traversable, hcl.Diagnostics) {
return NoneType, hcl.Diagnostics{unsupportedReceiverType(NoneType, traverser.SourceRange())}
}
func (n noneType) Equals(other Type) bool {
return n.equals(other, nil)
}
func (noneType) equals(other Type, seen map[Type]struct{}) bool {
return other == NoneType
}
func (noneType) AssignableFrom(src Type) bool {
return assignableFrom(NoneType, src, func() bool {
return false
})
}
func (noneType) ConversionFrom(src Type) ConversionKind {
return NoneType.conversionFrom(src, false, nil)
}
func (noneType) conversionFrom(src Type, unifying bool, seen map[Type]struct{}) ConversionKind {
return conversionFrom(NoneType, src, unifying, seen, func() ConversionKind {
return NoConversion
})
}
func (noneType) String() string {
return "none"
}
func (noneType) string(_ map[Type]struct{}) string {
return "none"
}
func (noneType) unify(other Type) (Type, ConversionKind) {
return unify(NoneType, other, func() (Type, ConversionKind) {
return NoneType, other.ConversionFrom(NoneType)
})
}
func (noneType) isType() {}