pulling in up to ksonnet-lib

Signed-off-by: bryanl <bryanliles@gmail.com>

Gopkg.lock

@@ -232,7 +232,7 @@
     "ksonnet-gen/nodemaker",
     "ksonnet-gen/printer"
   ]
-  revision = "9f27c242ff65da0620f8324cc0cd50c8ef00bf5b"
+  revision = "152e1979764f713239ca25bcb0f3315e69215119"
 
 [[projects]]
   branch = "master"

Gopkg.toml

@@ -54,7 +54,7 @@
 
 [[constraint]]
   name = "github.com/ksonnet/ksonnet-lib"
-  revision = "9f27c242ff65da0620f8324cc0cd50c8ef00bf5b"
+  revision = "152e1979764f713239ca25bcb0f3315e69215119"
 
 [[constraint]]
   name = "github.com/mattn/go-isatty"

vendor/github.com/ksonnet/ksonnet-lib/ksonnet-gen/astext/astext.go

 package astext
 
-import "github.com/google/go-jsonnet/ast"
+import (
+	"regexp"
+
+	"github.com/google/go-jsonnet/ast"
+	"github.com/pkg/errors"
+)
 
 // ObjectFields is a slice of ObjectField.
 type ObjectFields []ObjectField
@@ -26,3 +31,32 @@ type Object struct {
 	// Oneline prints this field on a single line.
 	Oneline bool
 }
+
+var (
+	// reFieldStr matches a field id that should be enclosed in quotes.
+	reFieldStr = regexp.MustCompile(`^[A-Za-z]+[A-Za-z0-9\-]*$`)
+	// reField matches a field id.
+	reField = regexp.MustCompile(`^[A-Za-z]+[A-Za-z0-9]*$`)
+)
+
+// CreateField creates an ObjectField with a name. If the name matches `reFieldStr`, it will
+// create an ObjectField with Kind `ObjectFieldStr`. If not, it will create an identifier
+// and set the ObjectField kind to `ObjectFieldId`.
+func CreateField(name string) (*ObjectField, error) {
+	of := ObjectField{ObjectField: ast.ObjectField{}}
+	if reField.MatchString(name) {
+		id := ast.Identifier(name)
+		of.Kind = ast.ObjectFieldID
+		of.Id = &id
+	} else if reFieldStr.MatchString(name) {
+		of.Expr1 = &ast.LiteralString{
+			Value: name,
+			Kind:  ast.StringDouble,
+		}
+		of.Kind = ast.ObjectFieldStr
+	} else {
+		return nil, errors.Errorf("invalid field name %q", name)
+	}
+
+	return &of, nil
+}