Consider Adding Type Alias for tftypes.Transform Functions

[bflad]

terraform-plugin-go version

v0.3.1

Use cases

Large downstream implementations of tftypes transformations tend to be wrapped into helper functions.

Attempted solutions

Declaring helper functions with whole function in returns, e.g.

func (s State) setAttributeTransformFunc(ctx context.Context, path *tftypes.AttributePath, tfVal tftypes.Value, diags diag.Diagnostics) (func(*tftypes.AttributePath, tftypes.Value) (tftypes.Value, error), diag.Diagnostics) {

Proposal

It would be great to have a type alias to simplify these declarations, e.g.

type TransformFunc func(*AttributePath, Value) (Value, error)

So implementations can then be:

func (s State) setAttributeTransformFunc(ctx context.Context, path *tftypes.AttributePath, tfVal tftypes.Value, diags diag.Diagnostics) (tftypes.TransformFunc, diag.Diagnostics) {

References

• tfsdk: Allow Plan and State SetAttribute to create attribute paths terraform-plugin-framework#165

[bflad]

Closing along the similar lines of #5

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