juggle添加c#版本

此前做过一个c++版的网络层dsl：http://www.cnblogs.com/qianqians/p/4255034.html

现在给这个dsl加入c#的支持，并且对代码的结构做了优化,将语法解析和代码生成做了解耦

语法解析部分

class func(object):
def __init__(self):
self.keyworld = ''
self.func = []
self.argvtuple = None

def clear(self):
self.keyworld = ''
self.func = []
self.argvtuple = None

def push(self, ch):
if ch == ' ' or ch == '\0':
self.keyworld = deleteNoneSpacelstrip(self.keyworld)
if self.keyworld != '':
if self.argvtuple is None:
self.func.append(deleteNoneSpacelstrip(self.keyworld))
else:
if self.keyworld in ['table', 'array', 'int', 'string', 'float', 'bool']:
self.argvtuple.append(deleteNoneSpacelstrip(self.keyworld))
self.keyworld = ''
return False

if ch == ',':
if self.keyworld != '' and self.keyworld in ['table', 'array', 'int', 'string', 'float', 'bool']:
self.argvtuple.append(deleteNoneSpacelstrip(self.keyworld))
self.keyworld = ''

return False

if ch == '(':
self.keyworld = deleteNoneSpacelstrip(self.keyworld)
if self.keyworld != '':
self.func.append(deleteNoneSpacelstrip(self.keyworld))
self.argvtuple = []
self.keyworld = ''
return False

if ch == ')':
if self.keyworld != '' and self.keyworld in ['table', 'array', 'int', 'string', 'float', 'bool']:
self.argvtuple.append(deleteNoneSpacelstrip(self.keyworld))

if self.argvtuple is None:
self.func.append([])
else:
self.func.append(self.argvtuple)

self.keyworld = ''
return False

if ch == ';':
return True

self.keyworld += ch

return False

class module(object):
def __init__(self):
self.keyworld = ''
self.name = ''
self.module = []
self.machine = None

def push(self, ch):
if ch == '}':
self.machine = None
return True

if self.machine is not None:
if self.machine.push(ch):
self.module.append(self.machine.func)
self.machine.clear()
else:
if ch == '{':
self.name = deleteNoneSpacelstrip(self.keyworld)
self.keyworld = ''
self.machine = func()
return False

self.keyworld += ch

return False

class statemachine(object):
def __init__(self):
self.keyworld = ''
self.module = {}
self.machine = None

def push(self, ch):
if self.machine is not None:
if self.machine.push(ch):
if isinstance(self.machine, module):
self.module[self.machine.name] = self.machine.module
self.machine = None
else:
if ch == ' ' or ch == '\0':
if deleteNoneSpacelstrip(self.keyworld) == 'module':
self.machine = module()
self.keyworld = ''
else:
self.keyworld += ch

def getmodule(self):
return self.module

def syntaxanalysis(self, genfilestr):
for str in genfilestr:
for ch in str:
self.push(ch)

解析采用状态机机制，逐字符读取代码在读取到关键字符则跳转状态，并且保持读取到的关键字。

读取的关键字采用table方式保持

module：[funcinfo, ...]

在代码生成部分，按解析获取的语法table生成module和caller代码，分别是事件的响应和调用端。

def gencaller(module_name, funcs):
code = "/*this caller file is codegen by juggle*/\n"
code += "using System;\n"
code += "using System.Collections;\n"
code += "using System.IO;\n"
code += "using MsgPack;\n"
code += "using MsgPack.Serialization;\n\n"

code += "namespace caller\n"
code += "{\n"
code += "    public class " + module_name + " : Icaller \n"
code += "    {\n"
code += "        public " + module_name + "(Ichannel _ch) : base(_ch)\n"
code += "        {\n"
code += "            module_name = \"" + module_name + "\";\n"
code += "        }\n\n"

for i in funcs:
code += "        public void " + i[1] + "("
count = 0
for item in i[2]:
code += tools.gentypetocsharp(item) + " argv" + str(count)
count = count + 1
if count < len(i[2]):
code += ","
code += ")\n"
code += "        {\n"
code += "            ArrayList _argv = new ArrayList();\n"
for n in range(len(i[2])):
code += "            _argv.Add(argv" + str(n) + ");\n"
code += "            call_module_method(\"" + i[1] + "\", _argv);\n"
code += "        }\n\n"

code += "    }\n"
code += "}\n"

return code

def genmodule(module_name, funcs):
code = "/*this module file is codegen by juggle*/\n"
code += "using System;\n"
code += "using System.Collections;\n\n"

code += "namespace module\n{\n"
code += "    public class " + module_name + " : Imodule \n    {\n"

code += "        public " + module_name + "()\n        {\n"
code += "            module_name = \"" + module_name + "\";\n"
code += "        }\n\n"

for i in funcs:
code += "        public abstract void " + i[1] + "("
count = 0
for item in i[2]:
code += tools.gentypetocsharp(item) + " argv" + str(count)
count = count + 1
code += ");\n\n"

code += "    }\n"
code += "}\n"

return code

和juggle的上个版本不同，为了简洁的用于开发游戏服务器，这个版本删除了同步调用功能，只保留异步调用，对同步调用感兴趣的 可以阅读darckforce里面的代码:https://github.com/qianqians/darkforce/tree/master/juggle

这个版本的代码地址在:https://github.com/qianqians/abelkhan

我将基于这个版本的juggle开发一个开源的游戏服务器框架，欢迎大家在论坛或博客给我留言提出意见