[Strings] stringview_*.slice (#4805)

Unfortunately one slice is the same as python [start:end], using 2 params,
and the other slice is one param, [CURR:CURR+num] (where CURR is implied
by the current state in the iter). So we can't use a single class here. Perhaps
a different name would be good, like slice vs substring (like JS does), but
I picked names to match the current spec.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/passes/Print.cpp b/src/passes/Print.cpp
index f41bdcd26..526059a66 100644
--- a/src/passes/Print.cpp
+++ b/src/passes/Print.cpp
@@ -2315,6 +2315,21 @@ struct PrintExpressionContents
         WASM_UNREACHABLE("invalid string.move*");
     }
   }
+  void visitStringSliceWTF(StringSliceWTF* curr) {
+    switch (curr->op) {
+      case StringSliceWTF8:
+        printMedium(o, "stringview_wtf8.slice");
+        break;
+      case StringSliceWTF16:
+        printMedium(o, "stringview_wtf16.slice");
+        break;
+      default:
+        WASM_UNREACHABLE("invalid string.slice*");
+    }
+  }
+  void visitStringSliceIter(StringSliceIter* curr) {
+    printMedium(o, "stringview_iter.slice");
+  }
 };
 
 // Prints an expression in s-expr format, including both the