58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package yaml
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import (
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"github.com/zclconf/go-cty/cty"
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"github.com/zclconf/go-cty/cty/function"
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)
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// YAMLDecodeFunc is a cty function for decoding arbitrary YAML source code
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// into a cty Value, using the ImpliedType and Unmarshal methods of the
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// Standard pre-defined converter.
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var YAMLDecodeFunc = function.New(&function.Spec{
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Params: []function.Parameter{
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{
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Name: "src",
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Type: cty.String,
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},
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},
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Type: func(args []cty.Value) (cty.Type, error) {
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if !args[0].IsKnown() {
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return cty.DynamicPseudoType, nil
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}
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if args[0].IsNull() {
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return cty.NilType, function.NewArgErrorf(0, "YAML source code cannot be null")
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}
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return Standard.ImpliedType([]byte(args[0].AsString()))
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},
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Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
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if retType == cty.DynamicPseudoType {
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return cty.DynamicVal, nil
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}
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return Standard.Unmarshal([]byte(args[0].AsString()), retType)
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},
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})
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// YAMLEncodeFunc is a cty function for encoding an arbitrary cty value
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// into YAML.
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var YAMLEncodeFunc = function.New(&function.Spec{
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Params: []function.Parameter{
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{
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Name: "value",
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Type: cty.DynamicPseudoType,
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AllowNull: true,
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AllowDynamicType: true,
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},
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},
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Type: function.StaticReturnType(cty.String),
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Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
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if !args[0].IsWhollyKnown() {
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return cty.UnknownVal(retType), nil
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}
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raw, err := Standard.Marshal(args[0])
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if err != nil {
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return cty.NilVal, err
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}
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return cty.StringVal(string(raw)), nil
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},
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})
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