Add a pair of util funcs.

2 files changed, 12 insertions, 1 deletions

diff --git a/src/zisp/value/array.zig b/src/zisp/value/array.zig
index 59667c8..ef2bcd6 100644
--- a/src/zisp/value/array.zig
+++ b/src/zisp/value/array.zig
@@ -134,7 +134,7 @@ pub const ArrayHeader = packed struct(u64) {
         }
     }
 
-    pub fn str(self: *@This()) []u8 {
+    pub fn str(self: *@This()) []const u8 {
         if (self.is_slice) {
             const buf = self.bufU8();
             const start, const end = self.sliceInfo();
@@ -159,3 +159,10 @@ const Endian = enum(u1) {
         .big => .big,
     };
 };
+
+pub fn check(v: Value) ?ArrayPtr {
+    if (v.getPtr(.array)) |p| {
+        return @ptrCast(p);
+    }
+    return null;
+}
diff --git a/src/zisp/value/istr.zig b/src/zisp/value/istr.zig
index aef5405..cadf849 100644
--- a/src/zisp/value/istr.zig
+++ b/src/zisp/value/istr.zig
@@ -78,6 +78,10 @@ pub fn intern(s: []const u8) Value {
     return value.ptr.pack(@ptrCast(istr), .istr);
 }
 
+pub fn getStr(v: Value) []const u8 {
+    return assert(v).str();
+}
+
 // Zisp API
 
 pub fn pred(v: Value) Value {