com.google.gwt.dev.jjs.impl.gflow.cfg.Cfg Maven / Gradle / Ivy
/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.jjs.impl.gflow.cfg;
import com.google.gwt.dev.jjs.impl.gflow.Assumption;
import com.google.gwt.dev.jjs.impl.gflow.Graph;
import com.google.gwt.dev.util.collect.Lists;
import com.google.gwt.thirdparty.guava.common.base.Preconditions;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* Control flow graph representation for gflow framework.
*/
public class Cfg implements Graph, CfgEdge, CfgTransformer> {
/**
* Graph incoming edges.
*/
private final ArrayList graphInEdges = new ArrayList();
/**
* Graph outgoing edges.
*/
private final ArrayList graphOutEdges = new ArrayList();
/**
* List of all nodes.
*/
private final ArrayList> nodes = new ArrayList>();
/**
* Add graph incoming edge.
*/
public void addGraphInEdge(CfgEdge edge) {
graphInEdges.add(edge);
}
/**
* Add graph outgoing edge.
*/
public void addGraphOutEdge(CfgEdge edge) {
graphOutEdges.add(edge);
}
/**
* Add incoming edge to the node.
*/
public void addIn(CfgNode node, CfgEdge edge) {
Preconditions.checkNotNull(edge, "Null edge: %s", edge);
Preconditions.checkArgument(edge.end == null,
"Edge is already bound: %s", edge);
node.in = Lists.add(node.in, edge);
edge.end = node;
}
/**
* Add new node to the graph.
*/
public > N addNode(N node) {
nodes.add(node);
return node;
}
/**
* Add outgoing edge from the node.
*/
public void addOut(CfgNode node, CfgEdge edge) {
if (edge.start != null) {
throw new IllegalArgumentException();
}
node.out = Lists.add(node.out, edge);
edge.start = node;
}
@Override
public Object getEdgeData(CfgEdge edge) {
return edge.data;
}
/**
* {@inheritDoc}
*/
@Override
public CfgNode getEnd(CfgEdge e) {
return e.getEnd();
}
/**
* {@inheritDoc}
*/
@Override
public ArrayList getGraphInEdges() {
return graphInEdges;
}
/**
* {@inheritDoc}
*/
@Override
public ArrayList getGraphOutEdges() {
return graphOutEdges;
}
/**
* {@inheritDoc}
*/
@Override
public List getInEdges(CfgNode cfgNode) {
return cfgNode.in;
}
/**
* {@inheritDoc}
*/
@Override
public ArrayList> getNodes() {
return nodes;
}
/**
* {@inheritDoc}
*/
@Override
public List getOutEdges(CfgNode cfgNode) {
return cfgNode.out;
}
/**
* {@inheritDoc}
*/
@Override
public CfgNode getStart(CfgEdge e) {
return e.getStart();
}
/**
* {@inheritDoc}
*/
@Override
public String print() {
return new CfgPrinter(this).print();
}
/**
* {@inheritDoc}
*/
@Override
public > String printWithAssumptions(
Map map) {
return new AssumptionsPrinter(this, map).print();
}
@Override
public void setEdgeData(CfgEdge edge, Object data) {
edge.data = data;
}
@Override
public String toString() {
return print();
}
/**
* {@inheritDoc}
*/
@Override
public boolean transform(CfgNode node, CfgTransformer actualizer) {
if (actualizer == null) {
throw new IllegalArgumentException();
}
return actualizer.transform(node, this);
}
}