Added support for single file builds

src/build/Build.go

@@ -2,25 +2,27 @@ package build
 
 import (
 	"path/filepath"
+	"strings"
 )
 
 // Build describes a compiler build.
 type Build struct {
-	Directory       string
+	Files           []string
 	WriteExecutable bool
 }
 
 // New creates a new build.
-func New(directory string) *Build {
+func New(files ...string) *Build {
 	return &Build{
-		Directory:       directory,
+		Files:           files,
 		WriteExecutable: true,
 	}
 }
 
 // Run parses the input files and generates an executable file.
 func (build *Build) Run() error {
-	functions, err := Compile(build.Directory)
+	functions, errors := Scan(build.Files)
+	allFunctions, err := Compile(functions, errors)
 
 	if err != nil {
 		return err
@@ -31,11 +33,17 @@ func (build *Build) Run() error {
 	}
 
 	path := build.Executable()
-	code, data := Finalize(functions)
+	code, data := Finalize(allFunctions)
 	return Write(path, code, data)
 }
 
 // Executable returns the path to the executable.
 func (build *Build) Executable() string {
-	return filepath.Join(build.Directory, filepath.Base(build.Directory))
+	directory, _ := filepath.Abs(build.Files[0])
+
+	if strings.HasSuffix(directory, ".q") {
+		directory = filepath.Dir(directory)
+	}
+
+	return filepath.Join(directory, filepath.Base(directory))
 }

src/build/Compile.go

@@ -5,8 +5,7 @@ import (
 )
 
 // Compile compiles all the functions.
-func Compile(directory string) (map[string]*Function, error) {
-	functions, errors := Scan(directory)
+func Compile(functions <-chan *Function, errors <-chan error) (map[string]*Function, error) {
 	wg := sync.WaitGroup{}
 	allFunctions := map[string]*Function{}
 

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)
 	}()
@@ -25,15 +25,24 @@ 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) {
+	for _, file := range files {
+		stat, err := os.Stat(file)
+
+		if err != nil {
+			errors <- err
+			return
+		}
+
+		if stat.IsDir() {
+			err = directory.Walk(file, func(name string) {
 				if !strings.HasSuffix(name, ".q") {
 					return
 				}
 
-		fullPath := filepath.Join(path, name)
+				fullPath := filepath.Join(file, name)
 				wg.Add(1)
 
 				go func() {
@@ -49,6 +58,19 @@ func scan(path string, functions chan<- *Function, errors chan<- error) {
 			if err != nil {
 				errors <- err
 			}
+		} else {
+			wg.Add(1)
+
+			go func() {
+				defer wg.Done()
+				err := scanFile(file, functions)
+
+				if err != nil {
+					errors <- err
+				}
+			}()
+		}
+	}
 
 	wg.Wait()
 }

src/cli/Build.go

@@ -10,7 +10,7 @@ import (
 
 // Build builds an executable.
 func Build(args []string) int {
-	b := build.New(".")
+	b := build.New()
 
 	for i := 0; i < len(args); i++ {
 		switch args[i] {
@@ -26,10 +26,14 @@ func Build(args []string) int {
 				return 2
 			}
 
-			b.Directory = args[i]
+			b.Files = append(b.Files, args[i])
 		}
 	}
 
+	if len(b.Files) == 0 {
+		b.Files = append(b.Files, ".")
+	}
+
 	err := b.Run()
 
 	if err != nil {