github.com/xushiwei/go@v0.0.0-20130601165731-2b9d83f45bc9/src/cmd/godoc/parser.go (about)

     1  // Copyright 2011 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  // This file contains support functions for parsing .go files
     6  // accessed via godoc's file system fs.
     7  
     8  package main
     9  
    10  import (
    11  	"go/ast"
    12  	"go/parser"
    13  	"go/token"
    14  	pathpkg "path"
    15  )
    16  
    17  func parseFile(fset *token.FileSet, filename string, mode parser.Mode) (*ast.File, error) {
    18  	src, err := ReadFile(fs, filename)
    19  	if err != nil {
    20  		return nil, err
    21  	}
    22  	return parser.ParseFile(fset, filename, src, mode)
    23  }
    24  
    25  func parseFiles(fset *token.FileSet, abspath string, localnames []string) (map[string]*ast.File, error) {
    26  	files := make(map[string]*ast.File)
    27  	for _, f := range localnames {
    28  		absname := pathpkg.Join(abspath, f)
    29  		file, err := parseFile(fset, absname, parser.ParseComments)
    30  		if err != nil {
    31  			return nil, err
    32  		}
    33  		files[absname] = file
    34  	}
    35  
    36  	return files, nil
    37  }