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mac add lex

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This commit is contained in:
shaoying 2017-12-15 00:31:51 +08:00
parent d3012e41b9
commit feda4c5d5e
2 changed files with 527 additions and 0 deletions
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375
src/context/lex.go Normal file
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package lex // {{{
// }}}
import ( // {{{
"context"
"fmt"
)
// }}}
type State struct {
star bool
next int
hash int
}
type Seed struct {
page int
hash int
word string
}
type LEX struct {
seed []*Seed
page map[string]int
hash map[string]int
state map[State]*State
mat []map[byte]*State
*ctx.Message
*ctx.Context
}
func (lex *LEX) train(seed []byte, arg ...string) { // {{{
cell, page, hash := 128, 1, 1 // {{{
if len(arg) > 0 {
if x, ok := lex.hash[arg[0]]; ok {
hash = x
} else {
hash = lex.Capi("nhash", 1)
lex.hash[arg[0]] = hash
}
}
if len(arg) > 1 {
if x, ok := lex.page[arg[1]]; ok {
page = x
} else {
lex.mat = append(lex.mat, make(map[byte]*State))
page = lex.Capi("nline", 1)
lex.page[arg[1]] = page
lex.Capi("npage", 1)
}
}
lex.Log("debug", nil, "%d %d %v", page, hash, seed)
lex.seed = append(lex.seed, &Seed{page, hash, string(seed)})
lex.Capi("nseed", 1)
lex.Cap("stream", fmt.Sprintf("%s,%s,%s", lex.Cap("nseed"), lex.Cap("npage"), lex.Cap("nhash")))
// }}}
s := []int{page}
c := make([]byte, 0, cell)
sn := make([]bool, len(lex.mat))
cn := make([]bool, cell)
ends := make([]*State, 0, len(seed))
for p := 0; p < len(seed); p++ {
switch seed[p] {
case '[':
p++
set := true
if seed[p] == '^' {
set = false
p++
}
for ; seed[p] != ']'; p++ {
if seed[p] == '\\' {
p++
cn[seed[p]] = true
continue
}
if seed[p+1] == '-' {
begin, end := seed[p], seed[p+2]
if begin > end {
begin, end = end, begin
}
for i := begin; i <= end; i++ {
cn[i] = true
}
p += 2
}
cn[seed[p]] = true
}
for i := 0; i < len(cn); i++ {
if (set && cn[i]) || (!set && !cn[i]) {
c = append(c, byte(i))
}
cn[i] = false
}
case '.':
for i := 0; i < cell; i++ {
c = append(c, byte(i))
}
case '\\':
p++
fallthrough
default:
c = append(c, seed[p])
}
lex.Log("debug", nil, "page: \033[31m%v\033[0m", s)
lex.Log("debug", nil, "cell: \033[32m%v\033[0m", c)
flag := '\000'
if p+1 < len(seed) {
flag = rune(seed[p+1])
switch flag {
case '+', '*', '?':
p++
}
}
for i := 0; i < len(s); i++ {
for line, j := 0, byte(0); int(j) < len(c); j++ {
state := lex.mat[s[i]][c[j]]
if state == nil {
state = new(State)
lex.Capi("nnode", 1)
}
lex.Log("debug", nil, "GET(%d,%d): %v", s[i], c[j], state)
switch flag {
case '+':
state.star = true
case '*':
state.star = true
fallthrough
case '?':
if sn[s[i]] = true; p == len(seed)-1 {
for _, n := range ends {
if n.next == s[i] && n.hash == 0 {
lex.Log("debug", nil, "GET() state:%v", n)
n.hash = hash
lex.Log("debug", nil, "END() state:%v", n)
}
}
}
}
if p == len(seed)-1 {
state.hash = hash
} else {
if state.next == 0 {
if line == 0 {
line = len(lex.mat)
sn = append(sn, false)
lex.mat = append(lex.mat, make(map[byte]*State))
lex.Capi("nline", 1)
}
state.next = line
}
sn[state.next] = true
}
if s, ok := lex.state[*state]; ok {
state = s
}
lex.state[*state] = state
lex.mat[s[i]][c[j]] = state
lex.Log("debug", nil, "SET(%d,%d): %v", s[i], c[j], state)
ends = append(ends, state)
}
}
c, s = c[:0], s[:0]
for i := 0; i < len(sn); i++ {
if sn[i] {
s = append(s, i)
}
sn[i] = false
}
}
}
// }}}
func (lex *LEX) parse(line []byte, arg ...string) (word []byte, hash int, rest []byte) { // {{{
page, begin, end := 1, 0, 0 // {{{
if len(arg) > 0 {
if x, ok := lex.page[arg[0]]; ok {
page = x
} else {
return line, 0, nil
}
}
// }}}
for star, s, i := 0, page, 0; s != 0 && i < len(line); i++ {
c := line[i]
if c == '\\' && i < len(line)-1 {
c = 'a'
end++
i++
}
state := lex.mat[s][c]
lex.Log("debug", nil, "(%d,%d): %v", s, c, state)
if state == nil && star != 0 {
s, star = star, 0
state = lex.mat[s][c]
lex.Log("debug", nil, "(%d,%d): %v", s, c, state)
}
if state == nil {
break
}
if state, ok := lex.mat[star][c]; star == 0 || !ok || state == nil || !state.star {
star = 0
}
if end++; state.star {
star = s
}
if s, hash = state.next, state.hash; s == 0 {
s, star = star, 0
}
}
if hash == 0 {
begin, end = 0, 0
}
word, rest = line[begin:end], line[end:]
lex.Log("debug", nil, "\033[31m[%v]\033[0m %d [%v]", string(word), hash, string(rest))
return
}
// }}}
func (lex *LEX) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server { // {{{
c.Caches = map[string]*ctx.Cache{}
c.Configs = map[string]*ctx.Config{}
s := new(LEX)
s.Context = c
return s
}
// }}}
func (lex *LEX) Begin(m *ctx.Message, arg ...string) ctx.Server { // {{{
lex.Message = m
lex.Caches["nseed"] = &ctx.Cache{Name: "种子数量", Value: "0", Help: "种子数量"}
lex.Caches["npage"] = &ctx.Cache{Name: "集合数量", Value: "1", Help: "集合数量"}
lex.Caches["nhash"] = &ctx.Cache{Name: "类型数量", Value: "1", Help: "类型数量"}
lex.Caches["nline"] = &ctx.Cache{Name: "状态数量", Value: "1", Help: "状态数量"}
lex.Caches["nnode"] = &ctx.Cache{Name: "节点数量", Value: "0", Help: "节点数量"}
lex.Caches["npush"] = &ctx.Cache{Name: "节点数量", Value: "0", Help: "节点数量", Hand: func(m *ctx.Message, x *ctx.Cache, arg ...string) string {
lex := m.Target.Server.(*LEX) // {{{
return fmt.Sprintf("%d", len(lex.state))
// }}}
}}
return lex
}
// }}}
func (lex *LEX) Start(m *ctx.Message, arg ...string) bool { // {{{
lex.seed = make([]*Seed, 0, 10)
lex.page = map[string]int{"nil": 0}
lex.hash = map[string]int{"nil": 0}
lex.state = make(map[State]*State)
lex.mat = make([]map[byte]*State, 2, 10)
for i := 0; i < len(lex.mat); i++ {
lex.mat[i] = make(map[byte]*State)
}
lex.Message = m
return false
}
// }}}
func (lex *LEX) Close(m *ctx.Message, arg ...string) bool { // {{{
return false
}
// }}}
var Index = &ctx.Context{Name: "lex", Help: "词法解析",
Caches: map[string]*ctx.Cache{},
Configs: map[string]*ctx.Config{},
Commands: map[string]*ctx.Command{
"train": &ctx.Command{Name: "train seed [hash [page]", Help: "添加词法规则", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
lex, ok := m.Target.Server.(*LEX) // {{{
m.Assert(ok, "模块类型错误")
m.Assert(len(arg) > 0, "参数错误")
lex.train([]byte(arg[0]), arg[1:]...)
return ""
// }}}
}},
"parse": &ctx.Command{Name: "parse line [page]", Help: "解析单词", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
lex, ok := m.Target.Server.(*LEX) // {{{
m.Assert(ok, "模块类型错误")
m.Assert(len(arg) > 0, "参数错误")
word, hash, rest := lex.parse([]byte(arg[0]), arg[1:]...)
m.Add("result", string(word), fmt.Sprintf("%d", hash), string(rest))
return ""
// }}}
}},
"split": &ctx.Command{Name: "split line page1 [page2]", Help: "分割语句", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
lex, ok := m.Target.Server.(*LEX) // {{{
m.Assert(ok, "模块类型错误")
m.Assert(len(arg) > 1, "参数错误")
for line := arg[0]; len(line) > 0; {
word, hash, rest := lex.parse([]byte(line), arg[1:]...)
line = string(rest)
word, hash, rest = lex.parse([]byte(line), arg[2:]...)
line = string(rest)
if hash == 0 {
break
}
m.Echo(string(word))
}
return ""
// }}}
}},
"cache": &ctx.Command{Name: "cache", Help: "显示缓存", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
lex, ok := m.Target.Server.(*LEX) // {{{
m.Assert(ok, "模块类型错误")
for i, v := range lex.seed {
m.Echo("seed: %d %v\n", i, v)
}
for i, v := range lex.page {
m.Echo("page: %s %d\n", i, v)
}
for i, v := range lex.hash {
m.Echo("hash: %s %d\n", i, v)
}
for i, v := range lex.state {
m.Echo("node: %v %v\n", i, v)
}
for i, v := range lex.mat {
for k, v := range v {
m.Echo("node: %v %v %v\n", i, k, v)
}
}
return ""
// }}}
}},
},
Index: map[string]*ctx.Context{
"void": &ctx.Context{Name: "void",
Commands: map[string]*ctx.Command{"split": &ctx.Command{}},
},
},
}
func init() {
lex := &LEX{}
lex.Context = Index
ctx.Index.Register(Index, lex)
}

152
src/context/lex_test.go Normal file
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package lex
import (
"context"
"testing"
)
func TestLEX(t *testing.T) {
m := ctx.Pulse.Spawn(Index)
seed := map[string]map[string]string{
// "shy?": map[string]string{
// "s": "",
// "sh": "sh",
// "she": "sh",
// "shy": "shy",
// "shyyy": "shy",
// },
// "shy*": map[string]string{
// "s": "",
// "sh": "sh",
// "she": "sh",
// "shy": "shy",
// "shyyy": "shyyy",
// },
// "shy+": map[string]string{
// "s": "",
// "sh": "",
// "she": "",
// "shy": "shy",
// "shyyy": "shyyy",
// },
// "s?hy": map[string]string{
// "s": "",
// "sh": "",
// "she": "",
// "shy": "shy",
// "hy": "hy",
// },
// "s*hy": map[string]string{
// "s": "",
// "sh": "",
// "she": "",
// "shy": "shy",
// "ssshy": "ssshy",
// "hy": "hy",
// },
// "s+hy": map[string]string{
// "s": "",
// "sh": "",
// "she": "",
// "shy": "shy",
// "ssshy": "ssshy",
// "hy": "",
// },
// "sh[xyz]?": map[string]string{
// "s": "",
// "sh": "sh",
// "she": "sh",
// "shy": "shy",
// "shyyy": "shy",
// },
// "sh[xyz]*": map[string]string{
// "s": "",
// "sh": "sh",
// "she": "sh",
// "shy": "shy",
// "shyyy": "shyyy",
// "shyxz": "shyxz",
// },
// "sh[xyz]+": map[string]string{
// "s": "",
// "sh": "",
// "she": "",
// "shy": "shy",
// "shyyy": "shyyy",
// "shyxzy": "shyxzy",
// },
// "[xyz]?sh": map[string]string{
// "s": "",
// "sh": "sh",
// "zsh": "zsh",
// "zxyshy": "",
// },
// "[xyz]*sh": map[string]string{
// "s": "",
// "sh": "sh",
// "zsh": "zsh",
// "zxyshy": "zxysh",
// },
// "[xyz]+sh": map[string]string{
// "s": "",
// "sh": "",
// "zsh": "zsh",
// "zxyshy": "zxysh",
// },
// "[0-9]+": map[string]string{
// "hello": "",
// "hi123": "",
// "123": "123",
// "123hi": "123",
// },
// "0x[0-9a-fA-F]+": map[string]string{
// "hello": "",
// "0xhi123": "",
// "0x123": "0x123",
// "0xab123ab": "0xab123ab",
// "0x123ab": "0x123ab",
// },
"[a-zA-Z][a-zA-Z0-9]*": map[string]string{
"hello": "hello",
"hi123": "hi123",
"123": "",
},
"\"[^\"]*\"": map[string]string{
"hello": "",
"0xhi123": "",
"\"hi\"": "\"hi\"",
"\"\\\"hi\"": "\"\\\"hi\"",
},
}
m.Conf("debug", "on")
Index.Begin(m)
for k, s := range seed {
Index.Start(m)
m.Cmd("train", k)
for i, v := range s {
if m.Cmd("parse", i) != v {
t.Error("train&parse error:", k, i, v)
}
}
}
Index.Start(m)
m.Cmd("train", "[ \n\t]+", "1")
m.Cmd("train", "[a-zA-Z][a-zA-Z0-9]*", "2", "2")
m.Cmd("train", "0x[0-9]+", "3", "2")
m.Cmd("train", "[0-9]+", "3", "2")
m.Cmd("train", "\"[^\"]*\"", "4", "2")
m.Cmd("train", "'[^']*'", "4", "2")
lex := Index.Server.(*LEX)
for _, v := range lex.seed {
t.Log(v.page, v.hash, v.word)
}
m.Cmd("split", "hello 0x2134 \"hi he\" meet\\ you")
// m.Cmd("parse", "0x54 nice to meet")
// m.Cmd("parse", "737 nice to meet")
// m.Cmd("parse", "\"73 u\" nice to meet")
// m.Cmd("parse", "'hh h' nice to meet")
}