started examples-3.0 with examples that are tested to work

1 files changed, 24 insertions, 0 deletions

diff --git a/examples-3.0/tutorial/calculator/CalculatorC.gf b/examples-3.0/tutorial/calculator/CalculatorC.gf
new file mode 100644
index 000000000..53eade357
--- /dev/null
+++ b/examples-3.0/tutorial/calculator/CalculatorC.gf
@@ -0,0 +1,24 @@
+--# -path=.:prelude
+
+concrete CalculatorC of Calculator = open Prelude, Formal in {
+
+  flags lexer=codevars ; unlexer=code ;
+
+  lincat 
+    Prog, Var = SS ; 
+    Exp = TermPrec ;
+
+  lin
+    PEmpty = ss [] ;
+    PInit exp prog = ss ("int" ++ prog.$0 ++ "=" ++ top exp ++ ";" ++ prog.s) ;
+    PAss vr exp prog = ss (vr.s ++ "=" ++ top exp ++ ";" ++ prog.s) ;
+
+    EPlus  = infixl 0 "+" ;
+    EMinus = infixl 0 "-" ;
+    ETimes = infixl 1 "*" ;
+    EDiv   = infixl 1 "/" ;
+
+    EInt i = constant i.s ;
+    EVar x = constant x.s ;
+
+}