1 files changed, 18 insertions, 0 deletions
diff --git a/compiler.d b/compiler.d
index 4fb37f2..4a3df27 100644
--- a/compiler.d
+++ b/compiler.d
@@ -596,6 +596,21 @@ class Compiler {
         this.func.chunk.writeOp(OpCode.OP_CONCAT, args[0].line);
     }
 
+    void compileIn(Form[] args) {
+        // TODO how do we identify/propagate errors?
+        if (args.length != 2) {
+            this.error(format("'in?': expected [2] arguments, received %d", args.length), -1);
+            this.advance();
+            //writeln("COMPILE ERROR: 'first' expects exactly one argument");
+            return;
+        }
+        ValueType vt1 = this.resolve(args[0], ValueType.ANY);
+        ValueType vt2 = this.resolve(args[1], ValueType.SEQ);
+        this.func.chunk.writeOp(OpCode.OP_TYPE_CHECK_SEQ, args[0].line);
+
+        this.func.chunk.writeOp(OpCode.OP_MEMBER, args[0].line);
+    }
+
     void compileFirst(Form[] args) {
         // TODO how do we identify/propagate errors?
         if (args.length != 1) {
@@ -772,6 +787,9 @@ class Compiler {
             case "first":
                 this.compileFirst(cons.tail);
                 break;
+            case "in?":
+                this.compileIn(cons.tail);
+                break;
             case "length":
                 this.compileLength(cons.tail);
                 break;