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package org.cheffo.jeplite.test;
import java.util.*;
import java.io.*;
import org.cheffo.jeplite.*;
import org.cheffo.jeplite.util.*;
import org.cheffo.jeplite.optimizer.*;
/**
* Title:
* Description:
* Copyright: Copyright (c) 2002
* Company:
* @author
* @version 1.0
*/
/**
* Provided to check for backward compability and performance.
*/
public class Tests {
public Tests() {
}
static void parseParams(String[] args) {
for(int i=0; i<args.length; i+=2) {
params.put(args[i].toLowerCase().trim(), args[i+1]);
}
}
static JEP jep = new JEP();
static HashMap params = new HashMap();
static void doIt(String toParse, BufferedWriter fw, SimpleNode optNode) throws Exception {
long[] testArray = new long[10];
double d = 0;
DoubleStack stack = new DoubleStack();
for(int j=0; j<10; j++) {
Thread.yield();
long start = System.currentTimeMillis();
for(int i=0; i<100000; i++){
d = optNode.getValue();
}
testArray[j] = System.currentTimeMillis()-start;
}
fw.write("100000 evaluations: ");
for(int j=0; j<10; j++) {
fw.write(testArray[j]+", ");
}
fw.write("\n");
}
public static void main(String[] args) throws Exception {
Date startTime = new Date();
parseParams(args);
File inFile = new File((String)params.get("-file"));
File logFile = new File((String)params.get("-logfile"));
BufferedReader fr = new BufferedReader(new FileReader(inFile));
BufferedWriter fw = new BufferedWriter(new FileWriter(logFile));
jep.addStandardConstants();
jep.addStandardFunctions();
String curLine = null;
int lines = 0;
while(null!=(curLine=fr.readLine())) {
if(curLine.startsWith("#"))
continue;
String description = curLine;
String toParse = fr.readLine();
double result = Double.parseDouble(fr.readLine().trim());
fw.write("Processing:"+toParse+",\n");
fw.write("Expected: "+result+"\n");
fw.flush();
// Give enought time to the jit compiler.
double d = 0;
DoubleStack stack = new DoubleStack();
for(int i=0; i<1000; i++) {
jep.parseExpression(toParse);
d = jep.getValue(stack);
}
SimpleNode optNode = jep.getTopNode();
//if(Boolean.getBoolean("noopt")) {
fw.write("Not Optimized: ");
doIt(toParse, fw, optNode);
//}
//if(Boolean.getBoolean("opt")) {
ExpressionOptimizer optimizer = new ExpressionOptimizer(jep.getTopNode());
//optimizer.addConst("pi");
//optimizer.addConst("e");
optNode = optimizer.optimize();
fw.write("Optimized : ");
doIt(toParse, fw, optNode);
long[] testArray = new long[10];
for(int j=0; j<10; j++) {
Thread.yield();
long start = System.currentTimeMillis();
for(int i=0; i<1000; i++){
jep.parseExpression(toParse);
}
testArray[j] = System.currentTimeMillis()-start;
}
fw.write("1000 parses: ");
for(int j=0; j<10; j++) {
fw.write(testArray[j]+", ");
}
fw.write("\n");
fw.write(d+"\n_____________________________________________________\n");
fw.flush();
//}
}
Date endTime = new Date();
fw.write("Start time: "+startTime+"\n");
fw.write("End time: "+endTime+"\n");
fw.write("Total time: "+(endTime.getTime()-startTime.getTime())+ " ms");
fw.close();
}
}
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