build: separate compiler and libs

compiler/internal/projs/proj.go

@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package projs
+
+import (
+	"errors"
+	"path/filepath"
+	"syscall"
+)
+
+// -----------------------------------------------------------------------------
+
+type Proj = interface {
+	projObj()
+}
+
+type FilesProj struct {
+	Files []string
+}
+
+type PkgPathProj struct {
+	Path string
+}
+
+type DirProj struct {
+	Dir string
+}
+
+func (p *FilesProj) projObj()   {}
+func (p *PkgPathProj) projObj() {}
+func (p *DirProj) projObj()     {}
+
+// -----------------------------------------------------------------------------
+
+func ParseOne(args ...string) (proj Proj, next []string, err error) {
+	if len(args) == 0 {
+		return nil, nil, syscall.ENOENT
+	}
+	arg := args[0]
+	if isFile(arg) {
+		n := 1
+		for n < len(args) && isFile(args[n]) {
+			n++
+		}
+		return &FilesProj{Files: args[:n]}, args[n:], nil
+	}
+	if isLocal(arg) {
+		return &DirProj{Dir: arg}, args[1:], nil
+	}
+	return &PkgPathProj{Path: arg}, args[1:], nil
+}
+
+func isFile(fname string) bool {
+	n := len(filepath.Ext(fname))
+	return n > 1
+}
+
+func isLocal(ns string) bool {
+	if len(ns) > 0 {
+		switch c := ns[0]; c {
+		case '/', '\\', '.':
+			return true
+		default:
+			return len(ns) >= 2 && ns[1] == ':' && ('A' <= c && c <= 'Z' || 'a' <= c && c <= 'z')
+		}
+	}
+	return false
+}
+
+// -----------------------------------------------------------------------------
+
+func ParseAll(args ...string) (projs []Proj, err error) {
+	var hasFiles, hasNotFiles bool
+	for {
+		proj, next, e := ParseOne(args...)
+		if e != nil {
+			if hasFiles && hasNotFiles {
+				return nil, ErrMixedFilesProj
+			}
+			return
+		}
+		if _, ok := proj.(*FilesProj); ok {
+			hasFiles = true
+		} else {
+			hasNotFiles = true
+		}
+		projs = append(projs, proj)
+		args = next
+	}
+}
+
+var (
+	ErrMixedFilesProj = errors.New("mixed files project")
+)
+
+// -----------------------------------------------------------------------------