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# -*- coding: utf-8 -*-
#
# AWL simulator - FUP compiler
#
# Copyright 2016 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
from awlsim.common.compat import *
from awlsim.common.sources import *
from awlsim.common.xmlfactory import *
from awlsim.common.cpuspecs import *
#from awlsim.core.cpu cimport * #@cy
from awlsim.core.cpu import * #@nocy
from awlsim.fupcompiler.fupcompiler_blockdecl import *
from awlsim.fupcompiler.fupcompiler_interf import *
from awlsim.fupcompiler.fupcompiler_grid import *
from awlsim.fupcompiler.fupcompiler_elem import *
#from awlsim.core.instructions.all_insns cimport * #@cy
from awlsim.core.instructions.all_insns import * #@nocy
class FupFakeCpu(S7CPU):
def getMnemonics(self):
return self.fupCompiler.mnemonics
class FupCompilerFactory(XmlFactory):
FUP_VERSION = 0
def parser_open(self, tag=None):
self.inFup = False
self.inGrids = False
XmlFactory.parser_open(self, tag)
def parser_beginTag(self, tag):
if self.inFup:
if self.inGrids:
if tag.name == "grid":
grid = FupCompiler_Grid(self.compiler)
self.compiler.grids.append(grid)
self.parser_switchTo(grid.factory(grid=grid))
return
else:
if tag.name == "blockdecl":
if self.compiler.decl:
raise self.Error("Multiple <blockdecl>s defined.")
decl = FupCompiler_BlockDecl(self.compiler)
self.compiler.decl = decl
self.parser_switchTo(decl.factory(decl=decl))
return
if tag.name == "interface":
if self.compiler.interf:
raise self.Error("Multiple <interface>s defined.")
interf = FupCompiler_Interf(self.compiler)
self.compiler.interf = interf
self.parser_switchTo(interf.factory(interf=interf))
return
if tag.name == "grids":
self.inGrids = True
return
else:
if tag.name == "FUP":
version = tag.getAttrInt("version")
if version != self.FUP_VERSION:
raise self.Error("Unsupported FUP version. "
"Got %d, but expected %d." % (
version, self.FUP_VERSION))
self.inFup = True
return
XmlFactory.parser_beginTag(self, tag)
def parser_endTag(self, tag):
if self.inFup:
if self.inGrids:
if tag.name == "grids":
self.inGrids = False
return
else:
if tag.name == "FUP":
self.inFup = False
self.parser_finish()
return
XmlFactory.parser_endTag(self, tag)
class FupCompiler(object):
AWL_ENCODING = "latin_1"
def __init__(self):
self.reset()
def reset(self):
self.mnemonics = None
self.opTrans = None
self.decl = None # FupCompiler_BlockDecl
self.interf = None # FupCompiler_Interf
self.grids = [] # FupCompiler_Grid
self.blockHeaderAwl = [] # Block declaration header AWL code strings
self.blockFooterAwl = [] # Block declaration footer AWL code strings
self.blockInterfAwl = [] # Block interface AWL code strings
self.instanceDBsAwl = [] # Instance DBs AWL code strings
self.fupSource = None # FUP source
self.awlSource = None # Compiled AWL source
def getAwlSource(self):
return self.awlSource
def __parse(self):
try:
return FupCompilerFactory(compiler=self).parse(
self.fupSource.sourceBytes)
except FupCompilerFactory.Error as e:
raise AwlSimError("Failed to parse FUP source: "
"%s" % str(e))
def __genAwlCode(self, insns):
"""Generate AWL code from a list of instructions.
Returns bytes encoded as self.AWL_ENCODING.
"""
awl = []
# Create header
awl.extend(self.blockHeaderAwl)
awl.extend(self.blockInterfAwl)
# Create instructions body
awl.append("BEGIN")
fakeCpu = FupFakeCpu()
fakeCpu.fupCompiler = self
for insn in insns:
insn.cpu = fakeCpu
awl.append("\t" + str(insn))
# Create footer
awl.extend(self.blockFooterAwl)
# Create the instance DBs
awl.extend(self.instanceDBsAwl or [])
return ('\r\n'.join(awl) + '\r\n').encode(self.AWL_ENCODING)
def __compileBlockDecl(self):
"""Compile block declaration.
"""
self.blockHeaderAwl, self.blockFooterAwl, self.instanceDBsAwl =\
self.decl.compile(self.interf)
def __compileInterface(self):
"""Compile block interface.
"""
self.blockInterfAwl = self.interf.compile()
def __compileGrids(self):
"""Compile all self.grids
"""
# Compile the grids
insns = []
for grid in self.grids:
insns.extend(grid.compile())
insns.append(AwlInsn_BE(cpu=None))
# Optimize the generated instructions
pass#TODO
return insns
def __trycompile(self, fupSource, mnemonics):
self.reset()
self.fupSource = fupSource
self.mnemonics = mnemonics
self.opTrans = AwlOpTranslator(mnemonics=mnemonics)
self.awlSource = AwlSource(name=fupSource.name,
filepath=fupSource.filepath)
if self.__parse():
self.__compileBlockDecl()
insns = self.__compileGrids()
self.__compileInterface()
# Store the AWL code in the AWL source object.
self.awlSource.sourceBytes = self.__genAwlCode(insns)
return self.getAwlSource()
def compile(self, fupSource, mnemonics):
"""Compile a FupSource.
mnemonics is either MNEMONICS_EN, MNEMONICS_DE or MNEMONICS_AUTO.
Returns an AwlSource.
"""
if mnemonics == S7CPUSpecs.MNEMONICS_AUTO:
try:
return self.__trycompile(fupSource, S7CPUSpecs.MNEMONICS_EN)
except AwlSimError as e:
pass
return self.__trycompile(fupSource, S7CPUSpecs.MNEMONICS_DE)
return self.__trycompile(fupSource, mnemonics)
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