[jlq19] Add new tests for lambdas

valid/function/lambdas/callLambdaInALoop.wacc

@@ -13,7 +13,8 @@ begin
     int n = 5 ;
     int i = 0 ;
     while i < n do
-      int r = call (\(int i) -> i)(i) ;
+      int{int} a = \(int i) -> i ;
+      int r = call a(i) ;
       println r ;
       i = i + 1
     done

valid/function/lambdas/callSimpleLambda.wacc

@@ -5,6 +5,7 @@
 
 # Program:
 begin
-  int y = call (\(int x, int y) -> x * y)(2, 3);
+  int{int, int} z = \(int x, int y) -> x * y ;
+  int y = call z(2, 3);
   print y
 end
\ No newline at end of file

valid/function/lambdas/lambdaInsideFunction.wacc

@@ -6,7 +6,8 @@
 # Program:
 begin
   int f(int x, int y) is
-    int r = call (\(int x, int y) -> x * y)(x,y);
+    int{int, int} q = \(int x, int y) -> x * y ;
+    int r = call q(x,y);
     return r
   end
   int y = call f(2,3);

valid/function/lambdas/lambdaWithManyArgs.wacc

@@ -6,6 +6,7 @@
 # Program:
 
 begin
-    int r = call (\(int x, int y, bool z, bool a, bool b, string c) -> x + y)(2, 3, false, false, true, "hello");
+    int{int, int, bool, bool, bool, string} q = \(int x, int y, bool z, bool a, bool b, string c) -> x + y ;
+    int r = call q(2, 3, false, false, true, "hello");
     print r
 end
\ No newline at end of file

valid/function/lambdas/nestedLambdas.wacc

+# nested lambdas
+
+# Output:
+# 12
+
+# Exit:
+# 0
+
+# Program:
+
+begin
+  int{int{int}, int{int}, int} x = (\(int{int} z, int{int} a, int b)  -> call z(b) + call a(b));
+  int y = call x(\(int x) -> x + 3, \(int x) -> x + 3, 3);
+  println y
+end
\ No newline at end of file

valid/function/simple_functions/lambdaHigherOrderManyVars.wacc

+# using lambdas with many vars as a higher-order function
+
+# Output:
+# 6
+
+# Exit:
+# 0
+
+# Program:
+
+begin
+  int{int} f(int{int, int, int} d) is
+    return d
+  end
+
+  int{int} x = call f(\(int x, int y, int z) -> x + y + z);
+  int y = call x(1,2,3);
+  println y
+end
\ No newline at end of file

valid/function/simple_functions/lambdaHigherOrderSimple.wacc

+# uses both lambdas and higher order functions
+
+# Output:
+# 7
+
+# Exit:
+# 0
+
+# Program:
+
+begin
+  int{int} f(int{int} d) is
+    return d
+  end
+
+  int{int} x = call f(\(int y) -> y);
+  int y = call x(7);
+  println y
+end
\ No newline at end of file