[router] add glm and step3 reasoning parser (#9415)

sgl-router/src/reasoning_parser/parsers/glm45.rs

@@ -0,0 +1,118 @@
+// GLM45 specific reasoning parser.
+// Uses the same format as Qwen3 but has its own implementation for debugging.
+
+use crate::reasoning_parser::parsers::BaseReasoningParser;
+use crate::reasoning_parser::traits::{ParseError, ParserConfig, ParserResult, ReasoningParser};
+
+/// GLM45 reasoning parser.
+///
+/// This parser uses the same format as Qwen3 (<think>...</think>) but has
+/// its own implementation for better debugging and potential future customization.
+pub struct Glm45Parser {
+    base: BaseReasoningParser,
+}
+
+impl Glm45Parser {
+    /// Create a new GLM45 parser.
+    pub fn new() -> Self {
+        let config = ParserConfig {
+            think_start_token: "<think>".to_string(),
+            think_end_token: "</think>".to_string(),
+            stream_reasoning: true,
+            max_buffer_size: 65536,
+            initial_in_reasoning: false, // Requires explicit start token like Qwen3
+        };
+
+        Self {
+            base: BaseReasoningParser::new(config).with_model_type("glm45".to_string()),
+        }
+    }
+}
+
+impl Default for Glm45Parser {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl ReasoningParser for Glm45Parser {
+    fn detect_and_parse_reasoning(&mut self, text: &str) -> Result<ParserResult, ParseError> {
+        self.base.detect_and_parse_reasoning(text)
+    }
+
+    fn parse_reasoning_streaming_incremental(
+        &mut self,
+        text: &str,
+    ) -> Result<ParserResult, ParseError> {
+        self.base.parse_reasoning_streaming_incremental(text)
+    }
+
+    fn reset(&mut self) {
+        self.base.reset()
+    }
+
+    fn model_type(&self) -> &str {
+        self.base.model_type()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_glm45_initial_state() {
+        let mut parser = Glm45Parser::new();
+
+        // Should NOT treat text as reasoning without start token
+        let result = parser
+            .detect_and_parse_reasoning("This is normal content")
+            .unwrap();
+        assert_eq!(result.normal_text, "This is normal content");
+        assert_eq!(result.reasoning_text, "");
+    }
+
+    #[test]
+    fn test_glm45_with_tokens() {
+        let mut parser = Glm45Parser::new();
+
+        // Should extract reasoning with proper tokens
+        let result = parser
+            .detect_and_parse_reasoning("<think>reasoning content</think>answer")
+            .unwrap();
+        assert_eq!(result.normal_text, "answer");
+        assert_eq!(result.reasoning_text, "reasoning content");
+    }
+
+    #[test]
+    fn test_glm45_streaming() {
+        let mut parser = Glm45Parser::new();
+
+        // First chunk - normal text
+        let result1 = parser
+            .parse_reasoning_streaming_incremental("normal text ")
+            .unwrap();
+        assert_eq!(result1.normal_text, "normal text ");
+        assert_eq!(result1.reasoning_text, "");
+
+        // Second chunk - enters reasoning
+        let result2 = parser
+            .parse_reasoning_streaming_incremental("<think>reasoning")
+            .unwrap();
+        assert_eq!(result2.normal_text, "");
+        assert_eq!(result2.reasoning_text, "reasoning");
+
+        // Third chunk - exits reasoning
+        let result3 = parser
+            .parse_reasoning_streaming_incremental("</think>answer")
+            .unwrap();
+        assert_eq!(result3.normal_text, "answer");
+        assert_eq!(result3.reasoning_text, "");
+    }
+
+    #[test]
+    fn test_model_type() {
+        let parser = Glm45Parser::new();
+        assert_eq!(parser.model_type(), "glm45");
+    }
+}

sgl-router/src/reasoning_parser/parsers/mod.rs

@@ -1,9 +1,13 @@
 pub mod base;
 pub mod deepseek_r1;
+pub mod glm45;
 pub mod kimi;
 pub mod qwen3;
+pub mod step3;
 
 pub use base::BaseReasoningParser;
 pub use deepseek_r1::DeepSeekR1Parser;
+pub use glm45::Glm45Parser;
 pub use kimi::KimiParser;
 pub use qwen3::{Qwen3Parser, QwenThinkingParser};
+pub use step3::Step3Parser;

sgl-router/src/reasoning_parser/parsers/step3.rs

@@ -0,0 +1,123 @@
+// Step3 specific reasoning parser.
+// Uses the same format as DeepSeek-R1 but has its own implementation for debugging.
+
+use crate::reasoning_parser::parsers::BaseReasoningParser;
+use crate::reasoning_parser::traits::{ParseError, ParserConfig, ParserResult, ReasoningParser};
+
+/// Step3 reasoning parser.
+///
+/// This parser uses the same format as DeepSeek-R1 (<think>...</think>) but has
+/// its own implementation for better debugging and potential future customization.
+pub struct Step3Parser {
+    base: BaseReasoningParser,
+}
+
+impl Step3Parser {
+    /// Create a new Step3 parser.
+    pub fn new() -> Self {
+        let config = ParserConfig {
+            think_start_token: "<think>".to_string(),
+            think_end_token: "</think>".to_string(),
+            stream_reasoning: true,
+            max_buffer_size: 65536,
+            initial_in_reasoning: true, // Assumes reasoning from start like DeepSeek-R1
+        };
+
+        Self {
+            base: BaseReasoningParser::new(config).with_model_type("step3".to_string()),
+        }
+    }
+}
+
+impl Default for Step3Parser {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl ReasoningParser for Step3Parser {
+    fn detect_and_parse_reasoning(&mut self, text: &str) -> Result<ParserResult, ParseError> {
+        self.base.detect_and_parse_reasoning(text)
+    }
+
+    fn parse_reasoning_streaming_incremental(
+        &mut self,
+        text: &str,
+    ) -> Result<ParserResult, ParseError> {
+        self.base.parse_reasoning_streaming_incremental(text)
+    }
+
+    fn reset(&mut self) {
+        self.base.reset()
+    }
+
+    fn model_type(&self) -> &str {
+        self.base.model_type()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_step3_initial_state() {
+        let mut parser = Step3Parser::new();
+
+        // Should treat text as reasoning even without start token
+        let result = parser
+            .detect_and_parse_reasoning("This is reasoning content")
+            .unwrap();
+        assert_eq!(result.normal_text, "");
+        assert_eq!(result.reasoning_text, "This is reasoning content");
+    }
+
+    #[test]
+    fn test_step3_with_end_token() {
+        let mut parser = Step3Parser::new();
+
+        // Should handle text with end token
+        let result = parser
+            .detect_and_parse_reasoning("reasoning content</think>answer")
+            .unwrap();
+        assert_eq!(result.normal_text, "answer");
+        assert_eq!(result.reasoning_text, "reasoning content");
+    }
+
+    #[test]
+    fn test_step3_with_both_tokens() {
+        let mut parser = Step3Parser::new();
+
+        // Should handle both start and end tokens
+        let result = parser
+            .detect_and_parse_reasoning("<think>reasoning content</think>answer")
+            .unwrap();
+        assert_eq!(result.normal_text, "answer");
+        assert_eq!(result.reasoning_text, "reasoning content");
+    }
+
+    #[test]
+    fn test_step3_streaming() {
+        let mut parser = Step3Parser::new();
+
+        // First chunk - treated as reasoning (initial_in_reasoning=true)
+        let result1 = parser
+            .parse_reasoning_streaming_incremental("reasoning text ")
+            .unwrap();
+        assert_eq!(result1.normal_text, "");
+        assert_eq!(result1.reasoning_text, "reasoning text ");
+
+        // Second chunk - continues reasoning until end token
+        let result2 = parser
+            .parse_reasoning_streaming_incremental("more reasoning</think>answer")
+            .unwrap();
+        assert_eq!(result2.normal_text, "answer");
+        assert_eq!(result2.reasoning_text, "more reasoning");
+    }
+
+    #[test]
+    fn test_model_type() {
+        let parser = Step3Parser::new();
+        assert_eq!(parser.model_type(), "step3");
+    }
+}