Interpreter capable of handing variables

1 files changed, 63 insertions, 0 deletions

diff --git a/code/Interpreter/Language.java b/code/Interpreter/Language.java
new file mode 100644
index 0000000..80aa1e3
--- /dev/null
+++ b/code/Interpreter/Language.java
@@ -0,0 +1,63 @@
+package Interpreter;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.List;
+import java.util.Scanner;
+
+//Base class for the interpreter
+public class Language {
+    static boolean hadError = false;
+    public static void main(String[] args){
+        
+        //Allow users to input a single line of code
+        //Still needs some work to re-ask for input after each line
+        if (args.length < 1){
+            Scanner input = new Scanner(System.in);
+            String sourceCode = "1";
+            while (sourceCode!=""){
+                System.out.print("Code: ");
+                sourceCode = input.nextLine();
+                runInterpreter(sourceCode);
+                hadError=false;
+            }
+            input.close();
+
+        //Allow users to provide a path to a file as an argument
+        } else if (args.length==1){
+            try {
+                String sourcecode = Files.readString(Paths.get(args[0]));  //Maybe should set charset here
+                runInterpreter(sourcecode);
+            } catch (IOException exception){
+                System.out.println("File not found");
+            }
+
+        } else {
+            System.out.println("Error, argument should be file path");
+            System.exit(64);
+        }
+    }
+
+    //Extract and print each token
+    private static void runInterpreter(String sourceCode){
+        TokenScanner scanner = new TokenScanner();
+        List<Token> tokens = scanner.extractTokens(sourceCode);
+        //for (Token token : tokens) {
+        //    System.out.println(token);
+        //}
+        if (hadError) return;
+        //Parse into AST
+        Parser parser = new Parser(tokens);
+        List<Statement> ast = parser.parse();
+        if (hadError) return;
+        Interpreter interpreter = new Interpreter();
+        interpreter.interpret(ast);
+    }
+
+    static void displayError(String message){
+        hadError=true;
+        System.out.println("An error was encountered");
+        System.out.println(message);
+    }
+}