Created
April 29, 2016 12:45
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Simple Interpreter
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Let x = 1 | |
Let y = 3 | |
Let z = 0 | |
z = x + y | |
print[z] |
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Learn more about bidirectional Unicode characters
package Interpreter; | |
/** | |
* Created by Sanitarium on 4/29/2016. | |
*/ | |
import javafx.util.Pair; | |
import java.io.*; | |
import java.*; | |
import java.util.*; | |
public class Interpret { | |
public static void read() | |
{ | |
try | |
{ | |
File file = new File("C:\\Users\\Sanitarium\\IdeaProjects\\Interpreter\\src\\java\\Interpreter\\code.txt"); | |
FileReader fileReader = new FileReader(file); | |
BufferedReader bufferedReader = new BufferedReader(fileReader); | |
StringBuffer stringBuffer = new StringBuffer(); | |
String line = null; | |
boolean var = false; | |
boolean operation = false; | |
//public static int x = 0; public static int y = 0; public static int z = 0;//variables | |
//List<Integer> values = new ArrayList<Integer>(); | |
HashMap<String, Integer> ValuesMap = new HashMap<String,Integer>(); | |
while ((line = bufferedReader.readLine()) != null) | |
{ | |
System.out.println(line); | |
//do this for each line........ | |
String[] tokens = line.split(" "); | |
System.out.println(tokens.length); | |
int i = 0; | |
System.out.println(tokens[i]); | |
if(tokens[i].contentEquals("Let") && tokens[i+2].contentEquals("="))// upcoming variable | |
{ | |
ValuesMap.put( tokens[i+1], Integer.parseInt( tokens[tokens.length-1] ) ); | |
} | |
else if( ValuesMap.containsKey(tokens[i]) && tokens[i+1].contentEquals("=") ) | |
{ | |
int temp =0; | |
int lValue = ValuesMap.get(tokens[i+2]); | |
int RValue = ValuesMap.get(tokens[i+4]); | |
if (tokens[i+3].contentEquals("+")) | |
{ | |
temp = lValue + RValue; | |
} | |
else if (tokens[i+3].contentEquals("-")) | |
{ | |
temp = lValue - RValue; | |
} | |
ValuesMap.put(tokens[i], temp); | |
} | |
else if (tokens[i].contains("print")) | |
{ | |
System.out.println(ValuesMap.get("z")); | |
} | |
} | |
fileReader.close(); | |
System.out.println("-----------\n\nEOF!\n"); | |
System.out.println(ValuesMap); | |
// System.out.println("list size"+values.size()); | |
// for(int i=0; i<values.size(); i++) | |
// { | |
// System.out.println(values.get(i)); | |
// } | |
} | |
catch(IOException e) | |
{ | |
e.printStackTrace(); | |
} | |
} | |
public static void main(String[] args) | |
{ | |
read(); | |
} | |
} |
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