代码的语法修复怎么做？生成的代码有语法错误怎么自动修正

publicclassSyntaxFixer{
    privateMap<String,FixStrategy> strategyMap;

    publicStringfix(String code,CompilerError error){
        String errorType = error.getType();
        FixStrategy strategy = strategyMap.get(errorType);

        if(strategy !=null){
            return strategy.apply(code, error.getPosition());
        }
        return code;// 无法修复则返回原始代码
    }
}

classMissingSemicolonFiximplementsFixStrategy{
    @Override
    publicStringapply(String code,int position){
        StringBuilder fixed =newStringBuilder(code);
        fixed.insert(position,';');
        return fixed.toString();
    }
}

defcalculate_discount(price, level)
if level =='vip'
discount = price *0.8
else:
    discount = price *0.9
return discount

publicclassIterativeFixingEngine{
    privatestaticfinalint MAX_ATTEMPTS =3;
    privatefinalSyntaxChecker checker;
    privatefinalLLMFixerService llmFixer;

    publicFixResultfixWithRetry(String code){
        String currentCode = code;
        List<String> attemptHistory =newArrayList<>();

        for(int attempt =0; attempt < MAX_ATTEMPTS; attempt++){
            SyntaxError error = checker.check(currentCode);
            if(error ==null){
                returnFixResult.success(currentCode, attempt +1);
            }

            attemptHistory.add(error.getMessage());
            String prompt =buildIterativePrompt(currentCode, error, attemptHistory);
            currentCode = llmFixer.fixWithPrompt(prompt);

            // 防止模型陷入重复错误
            if(attemptHistory.size()>=2&&
               attemptHistory.get(attemptHistory.size()-1)
               .equals(attemptHistory.get(attemptHistory.size()-2))){
                break;// 连续两次同样的错误说明修复策略失效
            }
        }

        returnFixResult.failure(currentCode, attemptHistory);
    }
}

publicclassParenthesisFixer{
    publicStringfix(String code,SyntaxError error){
        String[] lines = code.split("\n");
        int lineIndex = error.getLine()-1;
        String problemLine = lines[lineIndex];

        // 找到语句结束位置插入右括号
        int insertPos =findStatementEnd(problemLine, error.getColumn());
        String fixed = problemLine.substring(0, insertPos)+")"
        + problemLine.substring(insertPos);

        lines[lineIndex]= fixed;
        returnString.join("\n", lines);
    }

    privateintfindStatementEnd(String line,int errorColumn){
        // 向后扫描找分号或左花括号
        for(int i = errorColumn; i < line.length(); i++){
            if(line.charAt(i)==';'|| line.charAt(i)=='{'){
                return i;
            }
        }
        return line.length();
    }
}

publicclassLLMFixerService{
    privatefinalOpenAIClient client;

    publicStringfixWithLLM(String code,SyntaxError error){
        String prompt =buildPrompt(code, error);
        CompletionRequest request =CompletionRequest.builder()
        .model("gpt-4")
        .messages(List.of(
            Message.system("You are an expert code fixer. "
                           +"Fix syntax errors while preserving original logic."),
            Message.user(prompt)
        ))
        .temperature(0.2)// 低温度保证稳定性
        .build();

        CompletionResponse response = client.complete(request);
        returnextractFixedCode(response.getChoices().get(0).getMessage());
    }

    privateStringbuildPrompt(String code,SyntaxError error){
        returnString.format(
            "The following code has a %s error at line %d, column %d:\n\n"
            +"```\n%s\n```\n\n"
            +"Error message: %s\n\n"
            +"Please fix this error and return only the corrected code "
            +"without explanations.",
            error.getType(), error.getLine(), error.getColumn(),
            code, error.getMessage()
        );
    }
}

publicclassConfidenceEvaluator{
    publicdoubleevaluate(String originalCode,String fixedCode,
                         FixMethod method){
        double score =0.0;

        // 语法正确性检查（必须满足）
        if(!syntaxChecker.isValid(fixedCode)){
            return0.0;
        }
        score +=0.4;

        // 代码相似度（修改越少越好）
        double similarity =calculateEditDistance(originalCode, fixedCode);
        score += similarity *0.3;

        // 修复方法置信度（规则引擎比LLM更可靠）
        if(method ==FixMethod.RULE_BASED){
            score +=0.3;
        }else{
            score +=0.15;// LLM修复的置信度打折
        }

        return score;
    }

    privatedoublecalculateEditDistance(String s1,String s2){
        int distance =LevenshteinDistance.getDefaultInstance()
        .apply(s1, s2);
        int maxLength =Math.max(s1.length(), s2.length());
        return1.0-(double) distance / maxLength;
    }
}