def createTryCatchFinally(self, tryBlock, catchBlocks, finallyBlock, lineno):
hasFinally = finallyBlock is not None and ( (finallyBlock.getType() != Token.BLOCK) or finallyBlock.hasChildren())
if (tryBlock.getType() == Token.BLOCK) and not tryBlock.hasChildren() and not hasFinally:
return tryBlock
hasCatch = catchBlocks.hasChildren()
if not hasFinally and not hasCatch:
return tryBlock
handlerBlock = Node(Token.LOCAL_BLOCK)
pn = Jump(Token.TRY, tryBlock, lineno)
pn.putProp(Node.LOCAL_BLOCK_PROP, handlerBlock)
if hasCatch:
endCatch = Node.newTarget()
pn.addChildToBack(self.makeJump(Token.GOTO, endCatch))
catchTarget = Node.newTarget()
pn.target = catchTarget
pn.addChildToBack(catchTarget)
catchScopeBlock = Node(Token.LOCAL_BLOCK)
cb = catchBlocks.getFirstChild()
hasDefault = False
scopeIndex = 0
while cb is not None:
catchLineNo = cb.getLineno()
name = cb.getFirstChild()
cond = name.getNext()
catchStatement = cond.getNext()
cb.removeChild(name)
cb.removeChild(cond)
cb.removeChild(catchStatement)
catchStatement.addChildToBack(Node(Token.LEAVEWITH))
catchStatement.addChildToBack(self.makeJump(Token.GOTO, endCatch))
condStmt = None#Node()
if (cond.getType() == Token.EMPTY):
condStmt = catchStatement
hasDefault = True
else:
condStmt = self.createIf(cond, catchStatement, None, catchLineNo)
catchScope = Node(Token.CATCH_SCOPE, name, self.createUseLocal(handlerBlock))
catchScope.putProp(Node.LOCAL_BLOCK_PROP, catchScopeBlock)
catchScope.putIntProp(Node.CATCH_SCOPE_PROP, scopeIndex)
catchScopeBlock.addChildToBack(catchScope)
catchScopeBlock.addChildToBack(self.createWith(self.createUseLocal(catchScopeBlock), condStmt, catchLineNo))
cb = cb.getNext()
scopeIndex += 1
pn.addChildToBack(catchScopeBlock)
if not hasDefault:
rethrow = Node(Token.RETHROW)
rethrow.putProp(Node.LOCAL_BLOCK_PROP, handlerBlock)
pn.addChildToBack(rethrow)
pn.addChildToBack(endCatch)
if hasFinally:
finallyTarget = Node.newTarget()
pn.setFinally(finallyTarget)
pn.addChildToBack(self.makeJump(Token.JSR, finallyTarget))
finallyEnd = Node.newTarget()
pn.addChildToBack(self.makeJump(Token.GOTO, finallyEnd))
pn.addChildToBack(finallyTarget)
fBlock = Node(Token.FINALLY, finallyBlock)
fBlock.putProp(Node.LOCAL_BLOCK_PROP, handlerBlock)
pn.addChildToBack(fBlock)
pn.addChildToBack(finallyEnd)
handlerBlock.addChildToBack(pn)
return handlerBlock
