implement identity filter

1 files changed, 22 insertions, 0 deletions

diff --git a/src/jq/execute.zig b/src/jq/execute.zig
new file mode 100644
index 0000000..9857d46
--- /dev/null
+++ b/src/jq/execute.zig
@@ -0,0 +1,22 @@
+const std = @import("std");
+const jv = @import("../jv.zig");
+const Instr = @import("./compile.zig").Instr;
+
+pub const ExecuteError = error{
+    Unimplemented,
+};
+
+pub fn execute(allocator: std.mem.Allocator, instrs: []const Instr, input: jv.Value) !jv.Value {
+    _ = allocator;
+    const len = instrs.len;
+    var pc: usize = 0;
+    while (pc < len) {
+        const cur = instrs[pc];
+        _ = switch (cur.op) {
+            .nop => void,
+            .identity => return input,
+        };
+        pc += 1;
+    }
+    return ExecuteError.Unimplemented;
+}