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Previously we were using the experimental HCL 2 repository, but now we'll shift over to the v2 import path within the main HCL repository as part of actually releasing HCL 2.0 as stable. This is a mechanical search/replace to the new import paths. It also switches to the v2.0.0 release of HCL, which includes some new code that Terraform didn't previously have but should not change any behavior that matters for Terraform's purposes. For the moment the experimental HCL2 repository is still an indirect dependency via terraform-config-inspect, so it remains in our go.sum and vendor directories for the moment. Because terraform-config-inspect uses a much smaller subset of the HCL2 functionality, this does still manage to prune the vendor directory a little. A subsequent release of terraform-config-inspect should allow us to completely remove that old repository in a future commit.
64 lines
2.2 KiB
Go
64 lines
2.2 KiB
Go
package configs
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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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)
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// exprIsNativeQuotedString determines whether the given expression looks like
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// it's a quoted string in the HCL native syntax.
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//
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// This should be used sparingly only for situations where our legacy HCL
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// decoding would've expected a keyword or reference in quotes but our new
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// decoding expects the keyword or reference to be provided directly as
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// an identifier-based expression.
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func exprIsNativeQuotedString(expr hcl.Expression) bool {
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_, ok := expr.(*hclsyntax.TemplateExpr)
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return ok
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}
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// schemaForOverrides takes a *hcl.BodySchema and produces a new one that is
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// equivalent except that any required attributes are forced to not be required.
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//
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// This is useful for dealing with "override" config files, which are allowed
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// to omit things that they don't wish to override from the main configuration.
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//
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// The returned schema may have some pointers in common with the given schema,
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// so neither the given schema nor the returned schema should be modified after
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// using this function in order to avoid confusion.
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//
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// Overrides are rarely used, so it's recommended to just create the override
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// schema on the fly only when it's needed, rather than storing it in a global
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// variable as we tend to do for a primary schema.
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func schemaForOverrides(schema *hcl.BodySchema) *hcl.BodySchema {
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ret := &hcl.BodySchema{
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Attributes: make([]hcl.AttributeSchema, len(schema.Attributes)),
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Blocks: schema.Blocks,
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}
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for i, attrS := range schema.Attributes {
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ret.Attributes[i] = attrS
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ret.Attributes[i].Required = false
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}
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return ret
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}
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// schemaWithDynamic takes a *hcl.BodySchema and produces a new one that
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// is equivalent except that it accepts an additional block type "dynamic" with
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// a single label, used to recognize usage of the HCL dynamic block extension.
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func schemaWithDynamic(schema *hcl.BodySchema) *hcl.BodySchema {
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ret := &hcl.BodySchema{
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Attributes: schema.Attributes,
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Blocks: make([]hcl.BlockHeaderSchema, len(schema.Blocks), len(schema.Blocks)+1),
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}
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copy(ret.Blocks, schema.Blocks)
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ret.Blocks = append(ret.Blocks, hcl.BlockHeaderSchema{
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Type: "dynamic",
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LabelNames: []string{"type"},
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})
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return ret
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}
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