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/**
* Module : RuleSet.java Copyright : (c) 2011-2012, Galois, Inc.
*
* Maintainer : Stability : Provisional Portability: Portable
*
* 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.galois.fiveui;
import java.io.File;
import java.io.IOException;
import java.util.List;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
public class RuleSet {
public static RuleSet parseFile(String rsFileName) throws JsonSyntaxException, IOException {
String descDir = new File(rsFileName).getParent();
Gson gson = new Gson();
RuleSet rs = gson.fromJson(Utils.readFile(rsFileName), RuleSet.class);
rs.setDirectory(descDir);
return rs;
}
public void setDirectory(String descDir) {
this.descDir = descDir;
}
private final String name;
private final String description;
private final List<String> rules;
private transient ImmutableMap<String, Rule> _evaledRules = null;
private transient String descDir = ".";
public RuleSet(String name, String description, List<String> ruleFiles) {
this.name = name;
this.description = description;
this.rules = ruleFiles;
}
private void parseRules() {
ImmutableMap.Builder<String, Rule> builder = ImmutableMap.builder();
// Parse all the rules from files:
for (String r : rules) {
String adjustedPath = descDir + File.separator + r;
try {
Rule evRule = Rule.parse(
Utils.readFile(adjustedPath));
builder.put(evRule.getName(), evRule);
} catch (IOException e) {
System.err.println("Could not load rule from file: "+adjustedPath);
System.err.println(" error: "+e);
}
}
_evaledRules = builder.build();
}
/**
* Construct a new empty rule set.
*
* @return a new empty RuleSet object
*/
public static RuleSet empty() {
List<String> rules = Lists.newArrayList();
return new RuleSet("", "", ImmutableList.copyOf(rules));
}
public String getName() {
return name;
}
public String getDescription() {
return description;
}
public ImmutableCollection<Rule> getRules() {
if (null == _evaledRules) {
parseRules();
}
return _evaledRules.values();
}
public Rule getRule(String ruleName) {
return _evaledRules.get(ruleName);
}
@Override
public String toString() {
Gson gson = new Gson();
return gson.toJson(this);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((description == null) ? 0 : description.hashCode());
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((rules == null) ? 0 : rules.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
RuleSet other = (RuleSet) obj;
if (description == null) {
if (other.description != null)
return false;
} else if (!description.equals(other.description))
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (rules == null) {
if (other.rules != null)
return false;
} else if (!rules.equals(other.rules))
return false;
return true;
}
}
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