support package name with backslashes

Author: douyixuan

cmd/cell/build/build.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"strings"
 
 	"github.com/cell-labs/cell-script/compiler/compiler"
@@ -158,7 +159,8 @@ func compilePackage(c *compiler.Compiler, path, name string, options *option.Opt
 					if packagePath == "os" {
 						continue
 					}
-					if c.IsPackageImported(packagePath) {
+					packageName := filepath.Base(packagePath)
+					if c.IsPackageImported(packageName) {
 						continue
 					}
 

compiler/compiler/compiler.go

@@ -2,6 +2,7 @@ package compiler
 
 import (
 	"fmt"
+	"path/filepath"
 	"runtime"
 	"runtime/debug"
 
@@ -157,7 +158,7 @@ func (c *Compiler) Compile(root parser.PackageNode) (err error) {
 		}
 	}()
 
-	c.currentPackageName = root.Name
+	c.currentPackageName = filepath.Base(root.Name)
 	if !c.IsPackageImported(c.currentPackageName) {
 		c.currentPackage = NewPkg(c.currentPackageName)
 		c.packages[c.currentPackageName] = c.currentPackage

compiler/parser/parser.go

@@ -3,6 +3,7 @@ package parser
 import (
 	"fmt"
 	"log"
+	"path/filepath"
 	"strconv"
 
 	"errors"
@@ -519,7 +520,8 @@ func (p *parser) parseOneWithOptions(withAheadParse, withArithAhead, withIdentif
 
 		if current.Val == "import" {
 			imp := p.parseImport()
-			for _, n := range imp.PackagePaths {
+			for _, path := range imp.PackagePaths {
+				n := filepath.Base(path)
 				p.packages[n] = struct{}{}
 			}
 			return imp