Top level $if now uses $if: / $endif; Fix of boolean globals. Fix of $else: clause. Fix of $assert inside of $if

test/test_suite/compile_time/ct_if.c3t

@@ -0,0 +1,65 @@
+$if (0):
+$else:
+    $if (0):
+    $elif (0):
+    $elif (0):
+    $else:
+        int x = 1;
+    $endif;
+$endif;
+
+$if (0):
+$assert(false);
+$elif (0):
+$assert(false);
+$else:
+$assert(true);
+$endif;
+
+$if (1):
+$assert(true);
+int d = 5;
+$elif (0):
+$assert(false);
+$else:
+$assert(false);
+$endif;
+
+$if (0):
+$assert(true);
+$elif (1):
+$assert(true);
+int c = 5;
+$else:
+$assert(false);
+$endif;
+
+$if (0):
+$assert(true);
+$elif (1):
+$assert(true);
+int b = 4;
+$elif (0):
+$assert(false);
+$else:
+$assert(false);
+$endif;
+
+$if (0):
+$assert(true);
+$elif (0):
+$assert(false);
+$elif (1):
+$assert(true);
+int a = 3;
+$else:
+$assert(false);
+$endif;
+
+// #expect: ct_if.ll
+
+@ct_if.d = global i32 5, align 4
+@ct_if.c = global i32 5, align 4
+@ct_if.b = global i32 4, align 4
+@ct_if.a = global i32 3, align 4
+@ct_if.x = global i32 1, align 4

test/test_suite/compile_time/ct_if_fails.c3

@@ -0,0 +1,31 @@
+$if 3: // #error: Expected '('
+$endif;
+
+int x;
+$if (x > 0):
+$endif;
+
+$if (0):
+    $assert(false);
+$endif;
+
+$if (1):
+$else:
+$endif;
+
+$if (1):
+$else:
+$else: // #error: Expected a top level declaration here.
+$endif;
+
+
+$if (1):
+$elif (2):
+$else:
+$endif;
+
+$if (1):
+$elif (2):
+$elif (3):
+$else:
+$endif;