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39e609d5fd
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.
72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
package configs
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import (
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"fmt"
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version "github.com/hashicorp/go-version"
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"github.com/hashicorp/hcl/v2"
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"github.com/zclconf/go-cty/cty"
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"github.com/zclconf/go-cty/cty/convert"
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)
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// VersionConstraint represents a version constraint on some resource
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// (e.g. Terraform Core, a provider, a module, ...) that carries with it
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// a source range so that a helpful diagnostic can be printed in the event
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// that a particular constraint does not match.
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type VersionConstraint struct {
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Required version.Constraints
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DeclRange hcl.Range
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}
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func decodeVersionConstraint(attr *hcl.Attribute) (VersionConstraint, hcl.Diagnostics) {
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ret := VersionConstraint{
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DeclRange: attr.Range,
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}
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val, diags := attr.Expr.Value(nil)
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if diags.HasErrors() {
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return ret, diags
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}
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var err error
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val, err = convert.Convert(val, cty.String)
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if err != nil {
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diags = append(diags, &hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Invalid version constraint",
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Detail: fmt.Sprintf("A string value is required for %s.", attr.Name),
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Subject: attr.Expr.Range().Ptr(),
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})
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return ret, diags
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}
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if val.IsNull() {
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// A null version constraint is strange, but we'll just treat it
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// like an empty constraint set.
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return ret, diags
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}
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if !val.IsWhollyKnown() {
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// If there is a syntax error, HCL sets the value of the given attribute
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// to cty.DynamicVal. A diagnostic for the syntax error will already
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// bubble up, so we will move forward gracefully here.
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return ret, diags
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}
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constraintStr := val.AsString()
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constraints, err := version.NewConstraint(constraintStr)
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if err != nil {
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// NewConstraint doesn't return user-friendly errors, so we'll just
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// ignore the provided error and produce our own generic one.
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diags = append(diags, &hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Invalid version constraint",
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Detail: "This string does not use correct version constraint syntax.", // Not very actionable :(
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Subject: attr.Expr.Range().Ptr(),
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})
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return ret, diags
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}
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ret.Required = constraints
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return ret, diags
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}
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