From 57a168e6b51c0166d230ed1ff8bccf76af3a815f Mon Sep 17 00:00:00 2001
From: Sam Alba <sam.alba@gmail.com>
Date: Fri, 21 May 2021 16:10:07 -0700
Subject: [PATCH] pkg: removed unused code

Signed-off-by: Sam Alba <sam.alba@gmail.com>
---
 pkg/cuetils/scan.go | 138 --------------------------------------------
 1 file changed, 138 deletions(-)
 delete mode 100644 pkg/cuetils/scan.go

diff --git a/pkg/cuetils/scan.go b/pkg/cuetils/scan.go
deleted file mode 100644
index 0e327554..00000000
--- a/pkg/cuetils/scan.go
+++ /dev/null
@@ -1,138 +0,0 @@
-package cuetils
-
-import (
-	"cuelang.org/go/cue"
-)
-
-// ScanForInputs walks a Value looking for potential inputs
-// - non-concrete values or values with defaults
-// - exclude @dagger(computed) and #up
-// - exclude values which have references
-func ScanForInputs(value cue.Value) ([]cue.Value, error) {
-	var (
-		vals []cue.Value
-		err  error
-	)
-
-	// walk before function, bool return true if the walk should recurse again
-	before := func(v cue.Value) (bool, error) {
-		// inference phase
-		switch v.IncompleteKind() {
-		case cue.StructKind:
-			return true, nil
-
-		case cue.ListKind:
-			if !v.IsConcrete() && isInput(v) {
-				vals = append(vals, v)
-				return false, nil
-			}
-			return true, nil
-
-		default:
-
-			if !isInput(v) {
-				// Not an input
-				return false, nil
-			}
-
-			// a leaf with default?
-			_, has := v.Default()
-			if has {
-				vals = append(vals, v)
-				// recurse here?
-				return false, nil
-			}
-
-			// is this leaf not concrete? (should cause an error)
-			if v.Validate(cue.Concrete(true), cue.Optional(true)) != nil {
-				vals = append(vals, v)
-			}
-
-			return false, nil
-		}
-	}
-
-	// walk
-	err = walkValue(value, before, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	return vals, nil
-}
-
-func isInput(v cue.Value) bool {
-	attrs := v.Attributes(cue.ValueAttr)
-
-	for _, attr := range attrs {
-		name := attr.Name()
-		// match `@dagger(...)`
-		if name == "dagger" {
-			// loop over args (CSV content in attribute)
-			for i := 0; i < attr.NumArgs(); i++ {
-				key, _ := attr.Arg(i)
-
-				// we found an explicit input value
-				if key == "input" {
-					return true
-				}
-			}
-		}
-	}
-
-	return false
-}
-
-// walkValue is a custome walk function so that we recurse into more types than CUE's buildin walk
-// specificially, we need to customize the options to val.Fields when val is a struct
-func walkValue(val cue.Value, before func(cue.Value) (bool, error), after func(cue.Value) error) error {
-	if before != nil {
-		recurse, err := before(val)
-		if err != nil {
-			return err
-		}
-
-		// should we recurse into fields
-		if recurse {
-			switch val.IncompleteKind() {
-			case cue.StructKind:
-				// provide custom args to ensure we walk nested defs
-				// and that optionals are included
-				iter, err := val.Fields(
-					cue.Definitions(true),
-					cue.Optional(true),
-				)
-				if err != nil {
-					return err
-				}
-				for iter.Next() {
-					err := walkValue(iter.Value(), before, after)
-					if err != nil {
-						return err
-					}
-				}
-
-			case cue.ListKind:
-				iter, err := val.List()
-				if err != nil {
-					return err
-				}
-				for iter.Next() {
-					err := walkValue(iter.Value(), before, after)
-					if err != nil {
-						return err
-					}
-				}
-			}
-		}
-	}
-
-	if after != nil {
-		err := after(val)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}