calculator ex

1 files changed, 24 insertions, 0 deletions

diff --git a/examples/tutorial/calculator/CalculatorJ.gf b/examples/tutorial/calculator/CalculatorJ.gf
new file mode 100644
index 000000000..15b2caffd
--- /dev/null
+++ b/examples/tutorial/calculator/CalculatorJ.gf
@@ -0,0 +1,24 @@
+--# -path=.:prelude
+
+concrete CalculatorJ of Calculator = open Prelude in {
+
+  flags lexer=codevars ; unlexer=code ;
+
+  lincat 
+    Prog, Exp, Var = SS ;
+
+  lin
+    PEmpty = ss [] ;
+    PDecl exp prog = ss (exp.s ++ ";" ++ prog.s) ;
+    PAss vr exp prog = ss (exp.s ++ ";" ++ "istore" ++ vr.s ++ ";" ++ prog.s) ;
+
+    EPlus  = postfix "iadd" ;
+    EMinus = postfix "isub" ;
+    ETimes = postfix "imul" ;
+
+    EInt = prefixSS "iconst" ;
+    EVar = prefixSS "iload" ;
+
+  oper
+    postfix : Str -> SS -> SS -> SS = \op,x,y -> ss (x.s ++ ";" ++ y.s ++ ";" ++ op) ;
+}