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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import os, sys
from ipdl.ast import Visitor
from ipdl.ast import IN, OUT, INOUT, ASYNC, SYNC, INTR
class CodePrinter:
def __init__(self, outf=sys.stdout, indentCols=4):
self.outf = outf
self.col = 0
self.indentCols = indentCols
def write(self, str):
self.outf.write(str)
def printdent(self, str=''):
self.write((' '* self.col) + str)
def println(self, str=''):
self.write(str +'\n')
def printdentln(self, str):
self.write((' '* self.col) + str +'\n')
def indent(self): self.col += self.indentCols
def dedent(self): self.col -= self.indentCols
##-----------------------------------------------------------------------------
class IPDLCodeGen(CodePrinter, Visitor):
'''Spits back out equivalent IPDL to the code that generated this.
Also known as pretty-printing.'''
def __init__(self, outf=sys.stdout, indentCols=4, printed=set()):
CodePrinter.__init__(self, outf, indentCols)
self.printed = printed
def visitTranslationUnit(self, tu):
self.printed.add(tu.filename)
self.println('//\n// Automatically generated by ipdlc\n//')
CodeGen.visitTranslationUnit(self, tu)
def visitCxxInclude(self, inc):
self.println('include "'+ inc.file +'";')
def visitProtocolInclude(self, inc):
self.println('include protocol "'+ inc.file +'";')
if inc.tu.filename not in self.printed:
self.println('/* Included file:')
IPDLCodeGen(outf=self.outf, indentCols=self.indentCols,
printed=self.printed).visitTranslationUnit(inc.tu)
self.println('*/')
def visitProtocol(self, p):
self.println()
for namespace in p.namespaces: namespace.accept(self)
self.println('%s protocol %s\n{'% (p.sendSemantics[0], p.name))
self.indent()
for mgs in p.managesStmts:
mgs.accept(self)
if len(p.managesStmts): self.println()
for msgDecl in p.messageDecls: msgDecl.accept(self)
self.println()
for transStmt in p.transitionStmts: transStmt.accept(self)
self.dedent()
self.println('}')
self.write('}\n'* len(p.namespaces))
def visitManagerStmt(self, mgr):
self.printdentln('manager '+ mgr.name +';')
def visitManagesStmt(self, mgs):
self.printdentln('manages '+ mgs.name +';')
def visitMessageDecl(self, msg):
self.printdent('%s %s %s('% (msg.sendSemantics[0], msg.direction[0], msg.name))
for i, inp in enumerate(msg.inParams):
inp.accept(self)
if i != (len(msg.inParams) - 1): self.write(', ')
self.write(')')
if 0 == len(msg.outParams):
self.println(';')
return
self.println()
self.indent()
self.printdent('returns (')
for i, outp in enumerate(msg.outParams):
outp.accept(self)
if i != (len(msg.outParams) - 1): self.write(', ')
self.println(');')
self.dedent()
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