[13 - String Templates] Add "CC-Praxis-Antlr X Uebersetzer-Leer"

CC-Praxis-Antlr X Uebersetzer-Leer/src/de/dhbw/compiler/antlrxcompiler/XOptimizer.g

@@ -0,0 +1,63 @@
+tree grammar XOptimizer;
+
+options {
+  language = Java;
+  output = AST;
+  tokenVocab = XTypeCheck;
+  ASTLabelType = XTree;
+  filter=true;
+}
+
+
+
+@header {
+    package de.dhbw.compiler.antlrxcompiler;
+}
+
+@members {
+    private String addString(String first, String last) {
+      return first.substring(0, first.length()-1)+last.substring(1);
+    }
+    
+    private String opInt(String first, String last, char op) {
+      int firstValue = 0;
+      int lastValue = 0;
+      try {
+        firstValue = Integer.parseInt(first);
+        lastValue = Integer.parseInt(last);
+      } catch (Exception e) {
+        e.printStackTrace();
+      }
+      switch (op) {
+        case '+': return Integer.toString(firstValue+lastValue);
+        case '-': return Integer.toString(firstValue-lastValue);
+        case '*': return Integer.toString(firstValue*lastValue);
+        case '/': return Integer.toString(firstValue/lastValue);
+        default: return "";
+      }
+     }
+      
+    private String opFloat(String first, String last, char op) {
+      double firstValue = 0.0;
+      double lastValue = 0.0;
+      try {
+	      firstValue = Double.parseDouble(first);
+	      lastValue = Double.parseDouble(last);
+      } catch (Exception e) {
+        e.printStackTrace();
+      }
+      switch (op) {
+        case '+': return Double.toString(firstValue+lastValue);
+        case '-': return Double.toString(firstValue-lastValue);
+        case '*': return Double.toString(firstValue*lastValue);
+        case '/': return Double.toString(firstValue/lastValue);
+        default: return "";
+      }
+     }
+      
+ }
+
+
+bottomup: ;
+
+