The syntax tree is no longer passed by reference

parser/parser.go

@@ -14,15 +14,15 @@ type ParsingOperation struct {
 	tokens     []lexer.Token
 	tokenIndex int
 
-	tree *SyntaxTree
+	tree SyntaxTree
 }
 
 // Parse reads the files located in the module specified by modulePath, and
 // converts them into an abstract syntax tree.
-func Parse (modulePath string) (tree *SyntaxTree, err error) {
+func Parse (modulePath string) (tree SyntaxTree, err error) {
 	parser := ParsingOperation {
 		modulePath: modulePath,
-		tree: &SyntaxTree {
+		tree: SyntaxTree {
 			sections: make(map[string] Section),			
 		},
 	}

parser/test-common.go

@@ -7,15 +7,6 @@ import "testing"
 
 func checkTree (modulePath string, correct string, test *testing.T) {
 	tree, err := Parse(modulePath)
-	if tree == nil {
-		test.Log("TREE IS NIL!")
-		if err != io.EOF && err != nil {
-			test.Log("returned error:")
-			test.Log(err)
-		}
-		test.Fail()
-		return
-	}
 	
 	treeString := tree.ToString(0)
 	treeRunes  := []rune(treeString)

parser/tree.go

@@ -44,7 +44,7 @@ type Identifier struct {
 	trail []string
 }
 
-// TypeKind represents what kind of type a type is
+// TypeKind represents what kind of type a type is.
 type TypeKind int
 
 const (