initial commit

src/WordIterator.zig

@@ -0,0 +1,33 @@
+const lib = @import("lib.zig");
+
+const SpvWord = lib.SpvWord;
+
+const Self = @This();
+
+buffer: []const SpvWord,
+index: usize,
+
+pub fn init(buffer: []const SpvWord) Self {
+    return .{
+        .buffer = buffer,
+        .index = 0,
+    };
+}
+
+pub fn next(self: *Self) ?SpvWord {
+    const word = self.peek() orelse return null;
+    self.index += 1;
+    return word;
+}
+
+pub fn peek(self: *const Self) ?SpvWord {
+    return if (self.index >= self.buffer.len) null else self.buffer[self.index];
+}
+
+pub fn skip(self: *Self) bool {
+    if (self.index >= self.buffer.len) {
+        return false;
+    }
+    self.index += 1;
+    return true;
+}