github.com/ice-blockchain/go/src@v0.0.0-20240403114104-1564d284e521/internal/goroot/gccgo.go (about)

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build gccgo
     6  
     7  package goroot
     8  
     9  import (
    10  	"os"
    11  	"path/filepath"
    12  	"strings"
    13  )
    14  
    15  // IsStandardPackage reports whether path is a standard package,
    16  // given goroot and compiler.
    17  func IsStandardPackage(goroot, compiler, path string) bool {
    18  	switch compiler {
    19  	case "gc":
    20  		dir := filepath.Join(goroot, "src", path)
    21  		dirents, err := os.ReadDir(dir)
    22  		if err != nil {
    23  			return false
    24  		}
    25  		for _, dirent := range dirents {
    26  			if strings.HasSuffix(dirent.Name(), ".go") {
    27  				return true
    28  			}
    29  		}
    30  		return false
    31  	case "gccgo":
    32  		return stdpkg[path]
    33  	default:
    34  		panic("unknown compiler " + compiler)
    35  	}
    36  }