Add tokenizer, parser and support for certain operations

2 files changed, 62 insertions, 0 deletions

diff --git a/main/exception/ExceptionManager.java b/main/exception/ExceptionManager.java
new file mode 100644
index 0000000..0ceb25b
--- /dev/null
+++ b/main/exception/ExceptionManager.java
@@ -0,0 +1,29 @@
+package com.jantuomi.interpreter.main.exception;
+
+import java.util.List;
+
+/**
+ * Created by jan on 10.6.2016.
+ */
+public class ExceptionManager {
+
+    private static final ExceptionManager instance = new ExceptionManager();
+
+    private ExceptionManager() {
+    }
+
+    public static ExceptionManager getInstance() {
+        return instance;
+    }
+
+    public static void raise(InterpreterException.Exception ex, int line, List<String> args) {
+        InterpreterException e = new InterpreterException(ex);
+        String output = e.what();
+        for (String arg : args) {
+            output = String.format(output, arg);
+        }
+        System.err.println(String.format("[%s] line: %d %s", ex.toString(), line, output));
+    }
+
+
+}
diff --git a/main/exception/InterpreterException.java b/main/exception/InterpreterException.java
new file mode 100644
index 0000000..8129012
--- /dev/null
+++ b/main/exception/InterpreterException.java
@@ -0,0 +1,33 @@
+package com.jantuomi.interpreter.main.exception;
+
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Created by jan on 12.6.2016.
+ */
+public class InterpreterException {
+
+    public enum Exception {
+        IllegalTokenException,
+        UnknownOperatorException
+    }
+
+    public static Map<Exception, String> errorTexts = new HashMap<>();
+
+    static {
+        errorTexts.put(Exception.IllegalTokenException, "Illegal token %s found.");
+        errorTexts.put(Exception.UnknownOperatorException, "Unknown operator %s found.");
+    }
+
+    private Exception exception;
+
+    public InterpreterException(Exception e) {
+        exception = e;
+    }
+
+    public String what() {
+        return errorTexts.get(exception);
+    }
+}