From 96ca6e8d23c046aae5df8fc2a534e15ff18398cd Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Wed, 19 Mar 2025 10:48:42 +0200
Subject: [PATCH] swift : adapt to new API

---
 .../llama.cpp.swift/LibLlama.swift            | 64 +++++++------------
 1 file changed, 24 insertions(+), 40 deletions(-)

diff --git a/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift b/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift
index f6e31abc9..d04c6353e 100644
--- a/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift
+++ b/examples/llama.swiftui/llama.cpp.swift/LibLlama.swift
@@ -5,35 +5,19 @@ enum LlamaError: Error {
     case couldNotInitializeContext
 }
 
-func llama_batch_clear(_ batch: inout llama_batch) {
-    batch.n_tokens = 0
-}
-
-func llama_batch_add(_ batch: inout llama_batch, _ id: llama_token, _ pos: llama_pos, _ seq_ids: [llama_seq_id], _ logits: Bool) {
-    batch.token   [Int(batch.n_tokens)] = id
-    batch.pos     [Int(batch.n_tokens)] = pos
-    batch.n_seq_id[Int(batch.n_tokens)] = Int32(seq_ids.count)
-    for i in 0..<seq_ids.count {
-        batch.seq_id[Int(batch.n_tokens)]![Int(i)] = seq_ids[i]
-    }
-    batch.logits  [Int(batch.n_tokens)] = logits ? 1 : 0
-
-    batch.n_tokens += 1
-}
-
 actor LlamaContext {
     private var model: OpaquePointer
     private var context: OpaquePointer
     private var vocab: OpaquePointer
     private var sampling: UnsafeMutablePointer<llama_sampler>
-    private var batch: llama_batch
+    private var batch: OpaquePointer
     private var tokens_list: [llama_token]
     var is_done: Bool = false
 
     /// This variable is used to store temporarily invalid cchars
     private var temporary_invalid_cchars: [CChar]
 
-    var n_len: Int32 = 1024
+    var n_len: Int32 = 128
     var n_cur: Int32 = 0
 
     var n_decode: Int32 = 0
@@ -42,7 +26,7 @@ actor LlamaContext {
         self.model = model
         self.context = context
         self.tokens_list = []
-        self.batch = llama_batch_init(512, 0, 1)
+        self.batch = llama_batch_ext_init(512, 1)
         self.temporary_invalid_cchars = []
         let sparams = llama_sampler_chain_default_params()
         self.sampling = llama_sampler_chain_init(sparams)
@@ -53,7 +37,7 @@ actor LlamaContext {
 
     deinit {
         llama_sampler_free(sampling)
-        llama_batch_free(batch)
+        llama_batch_ext_free(batch)
         llama_model_free(model)
         llama_free(context)
         llama_backend_free()
@@ -111,7 +95,7 @@ actor LlamaContext {
     }
 
     func get_n_tokens() -> Int32 {
-        return batch.n_tokens;
+        return llama_batch_ext_get_n_tokens(batch)
     }
 
     func completion_init(text: String) {
@@ -133,25 +117,25 @@ actor LlamaContext {
             print(String(cString: token_to_piece(token: id) + [0]))
         }
 
-        llama_batch_clear(&batch)
+        llama_batch_ext_clear(batch)
 
         for i1 in 0..<tokens_list.count {
             let i = Int(i1)
-            llama_batch_add(&batch, tokens_list[i], Int32(i), [0], false)
+            llama_batch_ext_add_text(batch, tokens_list[i], Int32(i), [llama_seq_id(0)], 1, false)
         }
-        batch.logits[Int(batch.n_tokens) - 1] = 1 // true
+        llama_batch_ext_set_output_last(batch)
 
-        if llama_decode(context, batch) != 0 {
-            print("llama_decode() failed")
+        if llama_decode_ext(context, batch) != 0 {
+            print("llama_decode_ext() failed")
         }
 
-        n_cur = batch.n_tokens
+        n_cur = llama_batch_ext_get_n_tokens(batch)
     }
 
     func completion_loop() -> String {
         var new_token_id: llama_token = 0
 
-        new_token_id = llama_sampler_sample(sampling, context, batch.n_tokens - 1)
+        new_token_id = llama_sampler_sample(sampling, context, llama_batch_ext_get_n_tokens(batch) - 1)
 
         if llama_vocab_is_eog(vocab, new_token_id) || n_cur == n_len {
             print("\n")
@@ -178,13 +162,13 @@ actor LlamaContext {
         print(new_token_str)
         // tokens_list.append(new_token_id)
 
-        llama_batch_clear(&batch)
-        llama_batch_add(&batch, new_token_id, n_cur, [0], true)
+        llama_batch_ext_clear(batch)
+        llama_batch_ext_add_text(batch, new_token_id, n_cur, [llama_seq_id(0)], 1, true)
 
         n_decode += 1
         n_cur    += 1
 
-        if llama_decode(context, batch) != 0 {
+        if llama_decode_ext(context, batch) != 0 {
             print("failed to evaluate llama!")
         }
 
@@ -201,21 +185,21 @@ actor LlamaContext {
         for _ in 0..<nr {
             // bench prompt processing
 
-            llama_batch_clear(&batch)
+            llama_batch_ext_clear(batch)
 
             let n_tokens = pp
 
             for i in 0..<n_tokens {
-                llama_batch_add(&batch, 0, Int32(i), [0], false)
+                llama_batch_ext_add_text(batch, 0, Int32(i), [llama_seq_id(0)], 1, false)
             }
-            batch.logits[Int(batch.n_tokens) - 1] = 1 // true
+            llama_batch_ext_set_output_last(batch)
 
             llama_kv_self_clear(context)
 
             let t_pp_start = DispatchTime.now().uptimeNanoseconds / 1000;
 
-            if llama_decode(context, batch) != 0 {
-                print("llama_decode() failed during prompt")
+            if llama_decode_ext(context, batch) != 0 {
+                print("llama_decode_ext() failed during prompt")
             }
             llama_synchronize(context)
 
@@ -228,14 +212,14 @@ actor LlamaContext {
             let t_tg_start = DispatchTime.now().uptimeNanoseconds / 1000;
 
             for i in 0..<tg {
-                llama_batch_clear(&batch)
+                llama_batch_ext_clear(batch)
 
                 for j in 0..<pl {
-                    llama_batch_add(&batch, 0, Int32(i), [Int32(j)], true)
+                    llama_batch_ext_add_text(batch, 0, Int32(i), [llama_seq_id(Int32(j))], 1, true)
                 }
 
-                if llama_decode(context, batch) != 0 {
-                    print("llama_decode() failed during text generation")
+                if llama_decode_ext(context, batch) != 0 {
+                    print("llama_decode_ext() failed during text generation")
                 }
                 llama_synchronize(context)
             }