working renderer with tests

model/parsers/parsers.go

@@ -16,6 +16,8 @@ type Parser interface {
 	HasThinkingSupport() bool
 }
 
+// used like builtinParser := parsers.ParserForName(m.Config.Parser)
+
 func ParserForName(name string) Parser {
 	switch name {
 	case "qwen3-coder":

model/renderers/qwen3coder.go

@@ -55,7 +55,12 @@ func renderAdditionalKeys(obj any, handledKeys map[string]bool) string {
 	return sb.String()
 }
 
-func Qwen3CoderRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
+type Qwen3CoderRenderer struct {
+	isThinking bool
+}
+
+func (r *Qwen3CoderRenderer) Render(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
+	// func Qwen3CoderRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
 	var sb strings.Builder
 
 	// filter out system messages and choose the first (if any) to win

model/renderers/qwen3coder_test.go

@@ -288,7 +288,8 @@ call tool<|im_end|>
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			rendered, err := Qwen3CoderRenderer(tt.msgs, tt.tools, nil)
+			// rendered, err := Qwen3CoderRenderer(tt.msgs, tt.tools, nil)
+			rendered, err := (&Qwen3CoderRenderer{false}).Render(tt.msgs, tt.tools, nil)
 			if err != nil {
 				t.Fatal(err)
 			}

model/renderers/qwen3vl.go

@@ -49,7 +49,12 @@ func marshalWithSpaces(v any) ([]byte, error) {
 	return out, nil
 }
 
-func renderContent(content api.Message, doVisionCount bool) string {
+type Qwen3VLRenderer struct {
+	isThinking bool
+}
+
+// func renderContent(content api.Message, doVisionCount bool) string {
+func (r *Qwen3VLRenderer) renderContent(content api.Message, doVisionCount bool) string {
 	// This assumes all images are at the front of the message - same assumption as ollama/ollama/runner.go
 	var subSb strings.Builder
 	for _ = range content.Images {
@@ -64,9 +69,10 @@ func renderContent(content api.Message, doVisionCount bool) string {
 	return subSb.String()
 }
 
-func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
+// func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
+func (r *Qwen3VLRenderer) Render(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
 	var sb strings.Builder
-	isThinking := false
+	// r.isThinking = false
 
 	if len(tools) > 0 {
 		sb.WriteString(imStartTag + "system\n")
@@ -100,7 +106,7 @@ func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue
 	}
 
 	for i, message := range messages {
-		content := renderContent(message, true)
+		content := r.renderContent(message, true)
 
 		if message.Role == "user" || message.Role == "system" && i != 0 {
 			sb.WriteString("<|im_start|>" + message.Role + "\n" + content + "<|im_end|>\n")
@@ -108,7 +114,7 @@ func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue
 			contentReasoning := ""
 
 			// here we need to reconstruct
-			if isThinking { // we only do this if its a thinking model (i.e contentReasoning != "" if its a thinking model)
+			if r.isThinking { // we only do this if its a thinking model (i.e contentReasoning != "" if its a thinking model)
 				if message.Thinking != "" {
 					contentReasoning = message.Thinking
 				} else if strings.Contains(content, "</think>") {
@@ -128,7 +134,7 @@ func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue
 			// reconstruct the content
 
 			// isThinking && i > lastQueryIndex
-			if isThinking && i > lastQueryIndex { // if it is a thinking model
+			if r.isThinking && i > lastQueryIndex { // if it is a thinking model
 				if i == len(messages)-1 || contentReasoning != "" {
 					sb.WriteString("<|im_start|>" + message.Role + "\n<think>\n" + strings.Trim(contentReasoning, "\n") + "\n</think>\n\n" + strings.TrimLeft(content, "\n"))
 				} else {
@@ -165,7 +171,7 @@ func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue
 	}
 
 	sb.WriteString("<|im_start|>assistant\n")
-	if isThinking {
+	if r.isThinking {
 		sb.WriteString("<think>\n") // Thinking models end with <|im_start|>assistant\n<think>\n
 	}
 

model/renderers/qwen3vl_nonthinking_test.go

@@ -297,7 +297,9 @@ Thanks! What are the results?<|im_end|>
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			rendered, err := Qwen3VLRenderer(tt.msgs, tt.tools, nil)
+			// rendered, err := Qwen3VLRenderer(tt.msgs, tt.tools, nil)
+			// renderer := RendererForName("qwen3-vl")
+			rendered, err := (&Qwen3VLRenderer{false}).Render(tt.msgs, tt.tools, nil)
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -307,43 +309,3 @@ Thanks! What are the results?<|im_end|>
 		})
 	}
 }
-
-// what is this function for?
-
-// func TestFormatToolCallArgumentVL(t *testing.T) {
-// 	tests := []struct {
-// 		name     string
-// 		arg      any
-// 		expected string
-// 	}{
-// 		{
-// 			name: "string",
-// 			arg:  "foo",
-// 			// notice no quotes around the string
-// 			expected: "foo",
-// 		},
-// 		{
-// 			name:     "map",
-// 			arg:      map[string]any{"foo": "bar"},
-// 			expected: "{\"foo\":\"bar\"}",
-// 		},
-// 		{
-// 			name:     "number",
-// 			arg:      1,
-// 			expected: "1",
-// 		},
-// 		{
-// 			name:     "boolean",
-// 			arg:      true,
-// 			expected: "true",
-// 		},
-// 	}
-// 	for _, tt := range tests {
-// 		t.Run(tt.name, func(t *testing.T) {
-// 			got := formatToolCallArgument(tt.arg)
-// 			if got != tt.expected {
-// 				t.Errorf("formatToolCallArgument(%v) = %v, want %v", tt.arg, got, tt.expected)
-// 			}
-// 		})
-// 	}
-// }

model/renderers/qwen3vl_thinking_test.go

@@ -0,0 +1,380 @@
+package renderers
+
+import (
+	"testing"
+
+	"encoding/base64"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/ollama/ollama/api"
+)
+
+var IMAGE1_BASE64 = base64.StdEncoding.EncodeToString([]byte("image1"))
+var IMAGE2_BASE64 = "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"
+
+// TODO:
+// - [ ] test videos?
+// - [ ] set descriptions to omitempty?
+// - [] images add the auto tag
+
+func TestQwen3VLThinkingRenderer(t *testing.T) {
+	tests := []struct {
+		name     string
+		msgs     []api.Message
+		images   []api.ImageData
+		tools    []api.Tool
+		expected string
+	}{
+		{
+			name: "basic",
+			msgs: []api.Message{
+				{Role: "system", Content: "You are a helpful assistant."},
+				{Role: "user", Content: "Hello, how are you?"},
+			},
+			expected: `<|im_start|>system
+You are a helpful assistant.<|im_end|>
+<|im_start|>user
+Hello, how are you?<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		},
+		{
+			name: "With thinking, end assistant.",
+			msgs: []api.Message{
+				// {Role: "system", Content: "You are a helpful assistant."},
+				{Role: "user", Content: "Tell me a story in two sentences."},
+				{Role: "assistant", Content: "abc<think>To make this story interesting, I will speak in poetry.</think>"}, // does the thinking even work?
+			},
+			expected: `<|im_start|>user
+Tell me a story in two sentences.<|im_end|>
+<|im_start|>assistant
+<think>
+To make this story interesting, I will speak in poetry.
+</think>
+
+<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		},
+		{
+			name: "Multiple thinking",
+			msgs: []api.Message{
+				{Role: "user", Content: "Tell me a story in two sentences."},
+				{Role: "assistant", Content: "abc<think>To make this story interesting, I will speak in poetry.</think><think>And I will speak in poetry after the first sentence.</think>"},
+			},
+			expected: `<|im_start|>user
+Tell me a story in two sentences.<|im_end|>
+<|im_start|>assistant
+<think>
+To make this story interesting, I will speak in poetry.
+</think>
+
+<|im_end|>
+<|im_start|>assistant
+<think>
+`, // the second thinking tag is not captured
+		},
+		{
+			name: "Multiple thinking, multiple messages.",
+			msgs: []api.Message{
+				{Role: "user", Content: "Tell me a story in two sentences."},
+				{Role: "assistant", Content: "abc<think>To make this story interesting, I will speak in poetry.</think><think>And I will speak in poetry after the first sentence.</think>"},
+				{Role: "user", Content: "What is the weather like in San Francisco? <think>I will check the weather in San Francisco for you.</think>"},
+				{Role: "assistant", Content: "I'll check the weather in San Francisco for you.<think>Speak poetry after the first sentence.</think><think>Speak poetry after the second sentence.</think>"},
+			},
+			expected: `<|im_start|>user
+Tell me a story in two sentences.<|im_end|>
+<|im_start|>assistant
+<|im_end|>
+<|im_start|>user
+What is the weather like in San Francisco? <think>I will check the weather in San Francisco for you.</think><|im_end|>
+<|im_start|>assistant
+<think>
+Speak poetry after the first sentence.
+</think>
+
+<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		},
+		{
+			name: "Image",
+			msgs: []api.Message{ // i think this is because it does not go through the renderer?
+				{Role: "user", Content: "Describe this image.", Images: []api.ImageData{api.ImageData(IMAGE2_BASE64)}}, // does this work?
+			}, // this is actually a local test, remote model may need to be different
+			expected: `<|im_start|>user
+[img-0]Describe this image.<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		}, // there's no way to do videos?
+		{
+			name: "Multiple images",
+			msgs: []api.Message{
+				{Role: "user", Content: "Describe these images.", Images: []api.ImageData{api.ImageData(IMAGE1_BASE64), api.ImageData(IMAGE2_BASE64)}},
+			},
+			expected: `<|im_start|>user
+[img-0][img-1]Describe these images.<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		},
+		{
+			name: "with tools and response",
+			msgs: []api.Message{
+				{Role: "system", Content: "You are a helpful assistant with access to tools."},
+				{Role: "user", Content: "What's the weather like in New York?"},
+				{
+					Role:    "assistant",
+					Content: "I'll check the weather in New York for you.",
+					ToolCalls: []api.ToolCall{
+						{
+							Function: api.ToolCallFunction{
+								Name: "get-current-weather",
+								Arguments: map[string]any{
+									"location": "New York",
+									"unit":     "fahrenheit",
+								},
+							},
+						},
+					},
+				},
+				{Role: "tool", Content: "80", ToolName: "get-current-weather"},
+				{Role: "user", Content: "That sounds nice! What about San Francisco?"},
+			},
+			tools: []api.Tool{
+				{
+					Type: "function",
+					Function: api.ToolFunction{
+						Name:        "get-current-weather",
+						Description: "Get the current weather for a location",
+						Parameters: api.ToolFunctionParameters{
+							Type:     "object",
+							Required: []string{"location"},
+							Properties: map[string]api.ToolProperty{
+								"location": {
+									Type:        api.PropertyType{"string"},
+									Description: "The city and state, e.g. San Francisco, CA",
+								},
+								"unit": {
+									Type:        api.PropertyType{"string"},
+									Enum:        []any{"celsius", "fahrenheit"},
+									Description: "The temperature unit",
+								},
+							},
+						},
+					},
+				},
+			},
+			expected: `<|im_start|>system
+You are a helpful assistant with access to tools.
+
+# Tools
+
+You may call one or more functions to assist with the user query.
+
+You are provided with function signatures within <tools></tools> XML tags:
+<tools>
+{"type": "function", "function": {"name": "get-current-weather", "description": "Get the current weather for a location", "parameters": {"type": "object", "properties": {"location": {"type": "string", "description": "The city and state, e.g. San Francisco, CA"}, "unit": {"type": "string", "enum": ["celsius", "fahrenheit"], "description": "The temperature unit"}}, "required": ["location"]}}}
+</tools>
+
+For each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:
+<tool_call>
+{"name": <function-name>, "arguments": <args-json-object>}
+</tool_call><|im_end|>
+<|im_start|>user
+What's the weather like in New York?<|im_end|>
+<|im_start|>assistant
+I'll check the weather in New York for you.
+<tool_call>
+{"name": "get-current-weather", "arguments": {"location": "New York", "unit": "fahrenheit"}}
+</tool_call><|im_end|>
+<|im_start|>user
+<tool_response>
+80
+</tool_response><|im_end|>
+<|im_start|>user
+That sounds nice! What about San Francisco?<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		},
+		{
+			name: "With tools and response, multiple tool calls",
+			msgs: []api.Message{
+				{
+					Role:    "system",
+					Content: "You are a helpful assistant with access to tools.",
+				},
+				{
+					Role:    "user",
+					Content: "Call two tools for me: add and multiply.",
+				},
+				{
+					Role:    "assistant",
+					Content: "Sure, I'll call both tools for you.",
+					ToolCalls: []api.ToolCall{
+						{
+							Function: api.ToolCallFunction{
+								Name: "add",
+								Arguments: map[string]any{
+									"a": 2,
+									"b": 3,
+								},
+							},
+						},
+						{
+							Function: api.ToolCallFunction{
+								Name: "multiply",
+								Arguments: map[string]any{
+									"x": 4,
+									"y": 5,
+								},
+							},
+						},
+					},
+				},
+				{
+					Role:     "tool",
+					Content:  "5",
+					ToolName: "add",
+				},
+				{
+					Role:     "tool",
+					Content:  "20",
+					ToolName: "multiply",
+				},
+				{
+					Role:    "user",
+					Content: "Thanks! What are the results?",
+				},
+			},
+			tools: []api.Tool{
+				{
+					Type: "function",
+					Function: api.ToolFunction{
+						Name:        "add",
+						Description: "Add two numbers",
+						Parameters: api.ToolFunctionParameters{
+							Type:     "object",
+							Required: []string{"a", "b"},
+							Properties: map[string]api.ToolProperty{
+								"a": {Type: api.PropertyType{"integer"}, Description: "First number"},
+								"b": {Type: api.PropertyType{"integer"}, Description: "Second number"},
+							},
+						},
+					},
+				},
+				{
+					Type: "function",
+					Function: api.ToolFunction{
+						Name:        "multiply",
+						Description: "Multiply two numbers",
+						Parameters: api.ToolFunctionParameters{
+							Type:     "object",
+							Required: []string{"x", "y"},
+							Properties: map[string]api.ToolProperty{
+								"x": {Type: api.PropertyType{"integer"}, Description: "First factor"},
+								"y": {Type: api.PropertyType{"integer"}, Description: "Second factor"},
+							},
+						},
+					},
+				},
+			},
+			expected: `<|im_start|>system
+You are a helpful assistant with access to tools.
+
+# Tools
+
+You may call one or more functions to assist with the user query.
+
+You are provided with function signatures within <tools></tools> XML tags:
+<tools>
+{"type": "function", "function": {"name": "add", "description": "Add two numbers", "parameters": {"type": "object", "properties": {"a": {"type": "integer"}, "b": {"type": "integer"}}, "required": ["a", "b"]}}}
+{"type": "function", "function": {"name": "multiply", "description": "Multiply two numbers", "parameters": {"type": "object", "properties": {"x": {"type": "integer"}, "y": {"type": "integer"}}, "required": ["x", "y"]}}}
+</tools>
+
+For each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:
+<tool_call>
+{"name": <function-name>, "arguments": <args-json-object>}
+</tool_call><|im_end|>
+<|im_start|>user
+Call two tools for me: add and multiply.<|im_end|>
+<|im_start|>assistant
+Sure, I'll call both tools for you.
+<tool_call>
+{"name": "add", "arguments": {"a": 2, "b": 3}}
+</tool_call>
+<tool_call>
+{"name": "multiply", "arguments": {"x": 4, "y": 5}}
+</tool_call><|im_end|>
+<|im_start|>user
+<tool_response>
+5
+</tool_response>
+<tool_response>
+20
+</tool_response><|im_end|>
+<|im_start|>user
+Thanks! What are the results?<|im_end|>
+<|im_start|>assistant
+<think>
+`,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// rendered, err := Qwen3VLRenderer(tt.msgs, tt.tools, nil)
+			rendered, err := (&Qwen3VLRenderer{true}).Render(tt.msgs, tt.tools, nil)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if diff := cmp.Diff(rendered, tt.expected); diff != "" {
+				t.Errorf("mismatch (-got +want):\n%s", diff)
+			}
+		})
+	}
+}
+
+// what is this function for?
+
+func TestFormatToolCallArgumentVL(t *testing.T) {
+	tests := []struct {
+		name     string
+		arg      any
+		expected string
+	}{
+		{
+			name: "string",
+			arg:  "foo",
+			// notice no quotes around the string
+			expected: "foo",
+		},
+		{
+			name:     "map",
+			arg:      map[string]any{"foo": "bar"},
+			expected: "{\"foo\":\"bar\"}",
+		},
+		{
+			name:     "number",
+			arg:      1,
+			expected: "1",
+		},
+		{
+			name:     "boolean",
+			arg:      true,
+			expected: "true",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := formatToolCallArgument(tt.arg)
+			if got != tt.expected {
+				t.Errorf("formatToolCallArgument(%v) = %v, want %v", tt.arg, got, tt.expected)
+			}
+		})
+	}
+}

model/renderers/qwenvl-thinking.txt

@@ -0,0 +1,163 @@
+// package renderers
+
+// import (
+// 	"encoding/json"
+// 	"strings"
+
+// 	"github.com/ollama/ollama/api"
+// )
+
+// var imageCount int
+// var videoCount int
+
+// func marshalWithSpaces(v any) ([]byte, error) {
+// 	b, err := json.Marshal(v)
+// 	if err != nil {
+// 		return nil, err
+// 	}
+
+// 	out := make([]byte, 0, len(b)+len(b)/8)
+// 	inStr, esc := false, false
+// 	for _, c := range b {
+// 		if inStr {
+// 			out = append(out, c)
+// 			if esc {
+// 				esc = false
+// 				continue
+// 			}
+// 			if c == '\\' {
+// 				esc = true
+// 				continue
+// 			}
+// 			if c == '"' {
+// 				inStr = false
+// 			}
+// 			continue
+// 		}
+// 		switch c {
+// 		case '"':
+// 			inStr = true
+// 			out = append(out, c)
+// 		case ':':
+// 			out = append(out, ':', ' ')
+// 		case ',':
+// 			out = append(out, ',', ' ')
+// 		default:
+// 			out = append(out, c)
+// 		}
+// 	}
+// 	return out, nil
+// }
+
+// func renderContent(content api.Message, doVisionCount bool) string {
+// 	// This assumes all images are at the front of the message - same assumption as ollama/ollama/runner.go
+// 	var subSb strings.Builder
+// 	for _ = range content.Images {
+// 		if doVisionCount {
+// 			imageCount++
+// 		}
+// 		subSb.WriteString("<|vision_start|><|image_pad|><|vision_end|>")
+// 	}
+// 	// TODO: support videos
+
+// 	subSb.WriteString(content.Content)
+// 	return subSb.String()
+// }
+
+// func Qwen3VLRenderer(messages []api.Message, tools []api.Tool, _ *api.ThinkValue) (string, error) {
+// 	var sb strings.Builder
+
+// 	if len(tools) > 0 {
+// 		sb.WriteString(imStartTag + "system\n")
+// 		if len(messages) > 0 && messages[0].Role == "system" {
+// 			sb.WriteString(messages[0].Content + "\n\n")
+// 		}
+// 		sb.WriteString("# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\n<tools>")
+// 		for _, tool := range tools {
+// 			sb.WriteString("\n")
+// 			if b, err := marshalWithSpaces(tool); err == nil {
+// 				sb.Write(b)
+// 			}
+// 		}
+// 		sb.WriteString("\n</tools>\n\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\n<tool_call>\n{\"name\": <function-name>, \"arguments\": <args-json-object>}\n</tool_call><|im_end|>\n")
+// 	} else if len(messages) > 0 && messages[0].Role == "system" {
+// 		sb.WriteString("<|im_start|>system\n" + messages[0].Content + "<|im_end|>\n")
+// 	}
+// 	multiStepTool := true
+// 	lastQueryIndex := len(messages) - 1
+
+// 	for i := len(messages) - 1; i >= 0; i-- {
+// 		message := messages[i]
+// 		if multiStepTool && message.Role == "user" {
+// 			// Check if content starts with <tool_response> and ends with </tool_response>
+// 			content := message.Content
+// 			if !(strings.HasPrefix(content, "<tool_response>") && strings.HasSuffix(content, "</tool_response>")) {
+// 				multiStepTool = false
+// 				lastQueryIndex = i
+// 			}
+// 		}
+// 	}
+
+// 	for i, message := range messages {
+// 		content := renderContent(message, true)
+
+// 		if message.Role == "user" || message.Role == "system" && i != 0 {
+// 			sb.WriteString("<|im_start|>" + message.Role + "\n" + content + "<|im_end|>\n")
+// 		} else if message.Role == "assistant" {
+// 			contentReasoning := ""
+// 			if message.Thinking != "" {
+// 				contentReasoning = message.Thinking
+// 			} else if strings.Contains(content, "</think>") {
+// 				contentReasoning = strings.Split(content, "</think>")[0]
+// 				contentReasoning = strings.TrimRight(contentReasoning, "\n")
+
+// 				contentReasoningSplit := strings.Split(contentReasoning, "<think>")
+// 				contentReasoning = contentReasoningSplit[len(contentReasoningSplit)-1]
+
+// 				contentReasoning = strings.TrimLeft(contentReasoning, "\n")
+
+// 				contentSplit := strings.Split(content, "</think>")
+// 				content = contentSplit[len(contentSplit)-1]
+// 				content = strings.TrimLeft(content, "\n")
+// 			}
+
+// 			if i > lastQueryIndex {
+// 				if i == len(messages)-1 || contentReasoning != "" {
+// 					sb.WriteString("<|im_start|>" + message.Role + "\n<think>\n" + strings.Trim(contentReasoning, "\n") + "\n</think>\n\n" + strings.TrimLeft(content, "\n"))
+// 				} else {
+// 					sb.WriteString("<|im_start|>" + message.Role + "\n" + content)
+// 				}
+// 			} else {
+// 				sb.WriteString("<|im_start|>" + message.Role + "\n" + content)
+// 			}
+
+// 			if len(message.ToolCalls) > 0 {
+// 				for j, toolCall := range message.ToolCalls {
+// 					if j > 0 || content != "" {
+// 						sb.WriteString("\n")
+// 					}
+
+// 					sb.WriteString("<tool_call>\n{\"name\": \"" + toolCall.Function.Name + "\", \"arguments\": ")
+// 					if b, err := marshalWithSpaces(toolCall.Function.Arguments); err == nil {
+// 						sb.Write(b)
+// 					}
+// 					sb.WriteString("}\n</tool_call>")
+// 				}
+// 			}
+// 			sb.WriteString("<|im_end|>\n")
+// 		} else if message.Role == "tool" {
+// 			if i == 0 || messages[i-1].Role != "tool" {
+// 				sb.WriteString("<|im_start|>user")
+// 			}
+// 			sb.WriteString("\n<tool_response>\n" + message.Content + "\n</tool_response>")
+// 			if i == len(messages)-1 || messages[i+1].Role != "tool" {
+// 				sb.WriteString("<|im_end|>\n")
+// 			}
+// 		}
+
+// 	}
+
+// 	sb.WriteString("<|im_start|>assistant<think>\n")
+// 	return sb.String(), nil
+
+// }

model/renderers/renderer.go

@@ -1,27 +1,30 @@
 package renderers
 
-import (
+import "github.com/ollama/ollama/api"
-	"fmt"
 
-	"github.com/ollama/ollama/api"
+// type rendererFunc func([]api.Message, []api.Tool, *api.ThinkValue) (string, error)
-)
 
-type rendererFunc func([]api.Message, []api.Tool, *api.ThinkValue) (string, error)
+// func RenderWithRenderer(name string, msgs []api.Message, tools []api.Tool, think *api.ThinkValue) (string, error) {
+// 	renderer := rendererForName(name)
+// 	if renderer == nil {
+// 		return "", fmt.Errorf("unknown renderer %q", name)
+// 	}
+// 	return renderer(msgs, tools, think)
+// }
 
-func RenderWithRenderer(name string, msgs []api.Message, tools []api.Tool, think *api.ThinkValue) (string, error) {
+type Renderer interface {
-	renderer := rendererForName(name)
+	Render(messages []api.Message, tools []api.Tool, think *api.ThinkValue) (string, error)
-	if renderer == nil {
-		return "", fmt.Errorf("unknown renderer %q", name)
-	}
-	return renderer(msgs, tools, think)
 }
 
-func rendererForName(name string) rendererFunc {
+// func rendererForName(name string) rendererFunc {
+func RendererForName(name string) Renderer {
 	switch name {
 	case "qwen3-coder":
-		return Qwen3CoderRenderer
+		renderer := &Qwen3CoderRenderer{false} // this is not implemented yet
+		return renderer
 	case "qwen3-vl":
-		return Qwen3VLRenderer
+		renderer := &Qwen3VLRenderer{false}
+		return renderer
 	default:
 		return nil
 	}

server/prompt.go

@@ -106,7 +106,9 @@ func chatPrompt(ctx context.Context, m *Model, tokenize tokenizeFunc, opts *api.
 
 func renderPrompt(m *Model, msgs []api.Message, tools []api.Tool, think *api.ThinkValue) (string, error) {
 	if m.Config.Renderer != "" {
-		rendered, err := renderers.RenderWithRenderer(m.Config.Renderer, msgs, tools, think)
+		// rendered, err := renderers.RenderWithRenderer(m.Config.Renderer, msgs, tools, think)
+		renderer := renderers.RendererForName(m.Config.Renderer)
+		rendered, err := renderer.Render(msgs, tools, think)
 		if err != nil {
 			return "", err
 		}