Integrate configuration searches into engine loading

internal/engine/source.go

@@ -21,17 +21,21 @@ const (
 // Source is an opaque configuration input. Construct sources with File,
 // Filesystem.File, Bytes, Reader, or NoSource; the zero value is invalid.
 type Source struct {
-	kind      sourceKind
-	path      string
-	label     string
-	namespace *nativeNamespace
-	data      []byte
-	reader    *readerSource
-	mapping   *document.Node
-	mapIssue  *valueIssue
-	mapBytes  int64
-	mapNodes  int
-	createErr sourceCreationError
+	kind           sourceKind
+	path           string
+	label          string
+	namespace      *nativeNamespace
+	data           []byte
+	reader         *readerSource
+	mapping        *document.Node
+	mapIssue       *valueIssue
+	mapBytes       int64
+	mapNodes       int
+	createErr      sourceCreationError
+	search         *Search
+	searchApp      string
+	searchRequired bool
+	searchIssues   []string
 }
 
 type sourceKind uint8
@@ -44,6 +48,7 @@ const (
 	sourceReader
 	sourceMapping
 	sourceNone
+	sourceSearch
 )
 
 type sourceCreationError uint8