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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2010-12-03 04:34:57 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2010-12-03 04:34:57 +0000 |
| commit | 7a9389330e91acc3ed05deac2d198af25d13cf3c (patch) | |
| tree | 38fe54a4f38ede5d949c915d66191f24a6fe5153 /libgo/go/net/dict | |
| parent | 1aa6700378e5188a853c018256113ce6e1fb5c05 (diff) | |
| download | gcc-7a9389330e91acc3ed05deac2d198af25d13cf3c.zip gcc-7a9389330e91acc3ed05deac2d198af25d13cf3c.tar.gz gcc-7a9389330e91acc3ed05deac2d198af25d13cf3c.tar.bz2 | |
Add Go frontend, libgo library, and Go testsuite.
gcc/:
* gcc.c (default_compilers): Add entry for ".go".
* common.opt: Add -static-libgo as a driver option.
* doc/install.texi (Configuration): Mention libgo as an option for
--enable-shared. Mention go as an option for --enable-languages.
* doc/invoke.texi (Overall Options): Mention .go as a file name
suffix. Mention go as a -x option.
* doc/frontends.texi (G++ and GCC): Mention Go as a supported
language.
* doc/sourcebuild.texi (Top Level): Mention libgo.
* doc/standards.texi (Standards): Add section on Go language.
Move references for other languages into their own section.
* doc/contrib.texi (Contributors): Mention that I contributed the
Go frontend.
gcc/testsuite/:
* lib/go.exp: New file.
* lib/go-dg.exp: New file.
* lib/go-torture.exp: New file.
* lib/target-supports.exp (check_compile): Match // Go.
From-SVN: r167407
Diffstat (limited to 'libgo/go/net/dict')
| -rw-r--r-- | libgo/go/net/dict/dict.go | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/libgo/go/net/dict/dict.go b/libgo/go/net/dict/dict.go new file mode 100644 index 0000000..42f6553 --- /dev/null +++ b/libgo/go/net/dict/dict.go @@ -0,0 +1,212 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package dict implements the Dictionary Server Protocol +// as defined in RFC 2229. +package dict + +import ( + "container/vector" + "net/textproto" + "os" + "strconv" + "strings" +) + +// A Client represents a client connection to a dictionary server. +type Client struct { + text *textproto.Conn +} + +// Dial returns a new client connected to a dictionary server at +// addr on the given network. +func Dial(network, addr string) (*Client, os.Error) { + text, err := textproto.Dial(network, addr) + if err != nil { + return nil, err + } + _, _, err = text.ReadCodeLine(220) + if err != nil { + text.Close() + return nil, err + } + return &Client{text: text}, nil +} + +// Close closes the connection to the dictionary server. +func (c *Client) Close() os.Error { + return c.text.Close() +} + +// A Dict represents a dictionary available on the server. +type Dict struct { + Name string // short name of dictionary + Desc string // long description +} + +// Dicts returns a list of the dictionaries available on the server. +func (c *Client) Dicts() ([]Dict, os.Error) { + id, err := c.text.Cmd("SHOW DB") + if err != nil { + return nil, err + } + + c.text.StartResponse(id) + defer c.text.EndResponse(id) + + _, _, err = c.text.ReadCodeLine(110) + if err != nil { + return nil, err + } + lines, err := c.text.ReadDotLines() + if err != nil { + return nil, err + } + _, _, err = c.text.ReadCodeLine(250) + + dicts := make([]Dict, len(lines)) + for i := range dicts { + d := &dicts[i] + a, _ := fields(lines[i]) + if len(a) < 2 { + return nil, textproto.ProtocolError("invalid dictionary: " + lines[i]) + } + d.Name = a[0] + d.Desc = a[1] + } + return dicts, err +} + +// A Defn represents a definition. +type Defn struct { + Dict Dict // Dict where definition was found + Word string // Word being defined + Text []byte // Definition text, typically multiple lines +} + +// Define requests the definition of the given word. +// The argument dict names the dictionary to use, +// the Name field of a Dict returned by Dicts. +// +// The special dictionary name "*" means to look in all the +// server's dictionaries. +// The special dictionary name "!" means to look in all the +// server's dictionaries in turn, stopping after finding the word +// in one of them. +func (c *Client) Define(dict, word string) ([]*Defn, os.Error) { + id, err := c.text.Cmd("DEFINE %s %q", dict, word) + if err != nil { + return nil, err + } + + c.text.StartResponse(id) + defer c.text.EndResponse(id) + + _, line, err := c.text.ReadCodeLine(150) + if err != nil { + return nil, err + } + a, _ := fields(line) + if len(a) < 1 { + return nil, textproto.ProtocolError("malformed response: " + line) + } + n, err := strconv.Atoi(a[0]) + if err != nil { + return nil, textproto.ProtocolError("invalid definition count: " + a[0]) + } + def := make([]*Defn, n) + for i := 0; i < n; i++ { + _, line, err = c.text.ReadCodeLine(151) + if err != nil { + return nil, err + } + a, _ := fields(line) + if len(a) < 3 { + // skip it, to keep protocol in sync + i-- + n-- + def = def[0:n] + continue + } + d := &Defn{Word: a[0], Dict: Dict{a[1], a[2]}} + d.Text, err = c.text.ReadDotBytes() + if err != nil { + return nil, err + } + def[i] = d + } + _, _, err = c.text.ReadCodeLine(250) + return def, err +} + +// Fields returns the fields in s. +// Fields are space separated unquoted words +// or quoted with single or double quote. +func fields(s string) ([]string, os.Error) { + var v vector.StringVector + i := 0 + for { + for i < len(s) && (s[i] == ' ' || s[i] == '\t') { + i++ + } + if i >= len(s) { + break + } + if s[i] == '"' || s[i] == '\'' { + q := s[i] + // quoted string + var j int + for j = i + 1; ; j++ { + if j >= len(s) { + return nil, textproto.ProtocolError("malformed quoted string") + } + if s[j] == '\\' { + j++ + continue + } + if s[j] == q { + j++ + break + } + } + v.Push(unquote(s[i+1 : j-1])) + i = j + } else { + // atom + var j int + for j = i; j < len(s); j++ { + if s[j] == ' ' || s[j] == '\t' || s[j] == '\\' || s[j] == '"' || s[j] == '\'' { + break + } + } + v.Push(s[i:j]) + i = j + } + if i < len(s) { + c := s[i] + if c != ' ' && c != '\t' { + return nil, textproto.ProtocolError("quotes not on word boundaries") + } + } + } + return v, nil +} + +func unquote(s string) string { + if strings.Index(s, "\\") < 0 { + return s + } + b := []byte(s) + w := 0 + for r := 0; r < len(b); r++ { + c := b[r] + if c == '\\' { + r++ + c = b[r] + } + b[w] = c + w++ + } + return string(b[0:w]) +} |