Implemented dependency tracking

src/core/Function.go

@@ -11,17 +11,18 @@ import (
 // Function represents the smallest unit of code.
 type Function struct {
 	register.Machine
-	Package     string
-	Name        string
-	UniqueName  string
-	All         *Environment
-	File        *fs.File
-	Body        token.List
-	Input       []*Parameter
-	Output      []*Parameter
-	OutputTypes []types.Type
-	DLLs        dll.List
-	Err         error
-	deferred    []func()
-	count       count
+	Package      string
+	Name         string
+	UniqueName   string
+	All          *Environment
+	File         *fs.File
+	Body         token.List
+	Input        []*Parameter
+	Output       []*Parameter
+	OutputTypes  []types.Type
+	Dependencies []*Function
+	DLLs         dll.List
+	Err          error
+	deferred     []func()
+	count        count
 }