MCP Local LLM Server

Instructions

Implementation Reference

• src/tools/code-assistance.ts:724-785 (handler)

  The `translateCode` method within `CodeAssistanceTools` class acts as the handler for the `mcp_translate_code` tool, coordinating the LLM call for translating code between programming languages.

    async translateCode(
      code: string,
      targetLanguage: string,
      options?: {
        sourceLanguage?: string;
        preserveComments?: boolean;
      }
    ): Promise<TranslateCodeResult> {
      const sourceLanguage = options?.sourceLanguage ?? 'auto-detect';
  
      const prompt = `You are an expert polyglot programmer. Translate this code from ${sourceLanguage} to ${targetLanguage}.
  
  Guidelines:
  - Use idiomatic patterns in the target language
  - Include equivalent library imports where needed
  - ${options?.preserveComments ? 'Preserve and translate comments' : 'Add comments explaining key differences'}
  
  Provide your response as JSON:
  {
    "sourceLanguage": "Detected or specified source language",
    "targetLanguage": "${targetLanguage}",
    "translatedCode": "The translated code",
    "notes": ["Important translation notes"],
    "warnings": ["Any caveats or things that couldn't be directly translated"]
  }`;
  
      try {
        const responseText = await this.llmWrapper.callToolLlm(
          'mcp_translate_code',
          [
            { role: 'system', content: prompt },
            { role: 'user', content: `\`\`\`${sourceLanguage}\n${code}\n\`\`\`` },
          ],
          { type: 'translate_code', sourceLanguage, targetLanguage }
        );
  
        const parsed = this.parseJsonResponse(responseText, {
          sourceLanguage: sourceLanguage,
          targetLanguage: targetLanguage,
          translatedCode: '',
          notes: [],
        });
  
        return {
          success: true,
          sourceLanguage: parsed.sourceLanguage || sourceLanguage,
          targetLanguage: parsed.targetLanguage || targetLanguage,
          translatedCode: parsed.translatedCode || '',
          notes: parsed.notes || [],
          warnings: parsed.warnings,
        };
      } catch (error) {
        return {
          success: false,
          sourceLanguage: sourceLanguage,
          targetLanguage: targetLanguage,
          translatedCode: '',
          notes: [],
          error: error instanceof Error ? error.message : 'Unknown error',
        };
      }
    }