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