public void replaceStatement(Statement oldstat, Statement newstat) { for (StatEdge edge : oldstat.getAllPredecessorEdges()) { oldstat.removePredecessor(edge); edge.getSource().changeEdgeNode(DIRECTION_FORWARD, edge, newstat); newstat.addPredecessor(edge); } for (StatEdge edge : oldstat.getAllSuccessorEdges()) { oldstat.removeSuccessor(edge); edge.setSource(newstat); newstat.addSuccessor(edge); } int statindex = stats.getIndexByKey(oldstat.id); stats.removeWithKey(oldstat.id); stats.addWithKeyAndIndex(statindex, newstat, newstat.id); newstat.setParent(this); newstat.post = oldstat.post; if (first == oldstat) { first = newstat; } List<StatEdge> lst = new ArrayList<StatEdge>(oldstat.getLabelEdges()); for (int i = lst.size() - 1; i >= 0; i--) { StatEdge edge = lst.get(i); if (edge.getSource() != newstat) { newstat.addLabeledEdge(edge); } else { if (this == edge.getDestination() || this.containsStatementStrict(edge.getDestination())) { edge.closure = null; } else { this.addLabeledEdge(edge); } } } oldstat.getLabelEdges().clear(); }
public void collapseNodesToStatement(Statement stat) { Statement head = stat.getFirst(); Statement post = stat.getPost(); VBStyleCollection<Statement, Integer> setNodes = stat.getStats(); // post edges if (post != null) { for (StatEdge edge : post.getEdges(STATEDGE_DIRECT_ALL, DIRECTION_BACKWARD)) { if (stat.containsStatementStrict(edge.getSource())) { edge.getSource().changeEdgeType(DIRECTION_FORWARD, edge, StatEdge.TYPE_BREAK); stat.addLabeledEdge(edge); } } } // regular head edges for (StatEdge prededge : head.getAllPredecessorEdges()) { if (prededge.getType() != StatEdge.TYPE_EXCEPTION && stat.containsStatementStrict(prededge.getSource())) { prededge.getSource().changeEdgeType(DIRECTION_FORWARD, prededge, StatEdge.TYPE_CONTINUE); stat.addLabeledEdge(prededge); } head.removePredecessor(prededge); prededge.getSource().changeEdgeNode(DIRECTION_FORWARD, prededge, stat); stat.addPredecessor(prededge); } if (setNodes.containsKey(first.id)) { first = stat; } // exception edges Set<Statement> setHandlers = new HashSet<Statement>(head.getNeighbours(StatEdge.TYPE_EXCEPTION, DIRECTION_FORWARD)); for (Statement node : setNodes) { setHandlers.retainAll(node.getNeighbours(StatEdge.TYPE_EXCEPTION, DIRECTION_FORWARD)); } if (!setHandlers.isEmpty()) { for (StatEdge edge : head.getEdges(StatEdge.TYPE_EXCEPTION, DIRECTION_FORWARD)) { Statement handler = edge.getDestination(); if (setHandlers.contains(handler)) { if (!setNodes.containsKey(handler.id)) { stat.addSuccessor(new StatEdge(stat, handler, edge.getExceptions())); } } } for (Statement node : setNodes) { for (StatEdge edge : node.getEdges(StatEdge.TYPE_EXCEPTION, DIRECTION_FORWARD)) { if (setHandlers.contains(edge.getDestination())) { node.removeSuccessor(edge); } } } } if (post != null && !stat.getNeighbours(StatEdge.TYPE_EXCEPTION, DIRECTION_FORWARD) .contains(post)) { // TODO: second condition redundant? stat.addSuccessor(new StatEdge(StatEdge.TYPE_REGULAR, stat, post)); } // adjust statement collection for (Statement st : setNodes) { stats.removeWithKey(st.id); } stats.addWithKey(stat, stat.id); stat.setAllParent(); stat.setParent(this); stat.buildContinueSet(); // monitorenter and monitorexit stat.buildMonitorFlags(); if (stat.type == TYPE_SWITCH) { // special case switch, sorting leaf nodes ((SwitchStatement) stat).sortEdgesAndNodes(); } }