Added support for single file builds

src/build/Scan.go

@@ -11,12 +11,12 @@ import (
 )
 
 // Scan scans the directory.
-func Scan(path string) (<-chan *Function, <-chan error) {
+func Scan(files []string) (<-chan *Function, <-chan error) {
 	functions := make(chan *Function)
 	errors := make(chan error)
 
 	go func() {
-		scan(path, functions, errors)
+		scan(files, functions, errors)
 		close(functions)
 		close(errors)
 	}()
@@ -25,29 +25,51 @@ func Scan(path string) (<-chan *Function, <-chan error) {
 }
 
 // scan scans the directory without channel allocations.
-func scan(path string, functions chan<- *Function, errors chan<- error) {
+func scan(files []string, functions chan<- *Function, errors chan<- error) {
 	wg := sync.WaitGroup{}
 
-	err := directory.Walk(path, func(name string) {
-		if !strings.HasSuffix(name, ".q") {
+	for _, file := range files {
+		stat, err := os.Stat(file)
+
+		if err != nil {
+			errors <- err
 			return
 		}
 
-		fullPath := filepath.Join(path, name)
-		wg.Add(1)
+		if stat.IsDir() {
+			err = directory.Walk(file, func(name string) {
+				if !strings.HasSuffix(name, ".q") {
+					return
+				}
 
-		go func() {
-			defer wg.Done()
-			err := scanFile(fullPath, functions)
+				fullPath := filepath.Join(file, name)
+				wg.Add(1)
+
+				go func() {
+					defer wg.Done()
+					err := scanFile(fullPath, functions)
+
+					if err != nil {
+						errors <- err
+					}
+				}()
+			})
 
 			if err != nil {
 				errors <- err
 			}
-		}()
-	})
+		} else {
+			wg.Add(1)
 
-	if err != nil {
-		errors <- err
+			go func() {
+				defer wg.Done()
+				err := scanFile(file, functions)
+
+				if err != nil {
+					errors <- err
+				}
+			}()
+		}
 	}
 
 	wg.Wait()