57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
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package hcl2template
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import (
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"fmt"
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/hcl/v2/hcldec"
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"github.com/zclconf/go-cty/cty"
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"github.com/zclconf/go-cty/cty/gocty"
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)
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type Decodable interface {
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FlatMapstructure() interface{}
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}
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type SelfSpecified interface {
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HCL2Spec() map[string]hcldec.Spec
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}
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func decodeDecodable(block *hcl.Block, ctx *hcl.EvalContext, dec Decodable) (interface{}, hcl.Diagnostics) {
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var diags hcl.Diagnostics
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flatCfg := dec.FlatMapstructure()
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var spec hcldec.ObjectSpec
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if ss, selfSpecified := flatCfg.(SelfSpecified); selfSpecified {
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spec = hcldec.ObjectSpec(ss.HCL2Spec())
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} else {
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diags = append(diags, &hcl.Diagnostic{
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Summary: "Unknown type",
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Subject: &block.DefRange,
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Detail: fmt.Sprintf("Cannot get spec from a %T", flatCfg),
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})
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return nil, diags
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}
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val, moreDiags := hcldec.Decode(block.Body, spec, ctx)
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diags = append(diags, moreDiags...)
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err := gocty.FromCtyValue(val, flatCfg)
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if err != nil {
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switch err := err.(type) {
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case cty.PathError:
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diags = append(diags, &hcl.Diagnostic{
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Summary: "gocty.FromCtyValue: " + err.Error(),
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Subject: &block.DefRange,
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Detail: fmt.Sprintf("%v", err.Path),
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})
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default:
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diags = append(diags, &hcl.Diagnostic{
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Summary: "gocty.FromCtyValue: " + err.Error(),
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Subject: &block.DefRange,
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Detail: fmt.Sprintf("%v", err),
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})
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}
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}
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return flatCfg, diags
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}
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