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// 格式化错误并统一打印异常与帮助信息。
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#include "utils/Log.h"
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#include <ostream>
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#include <string>
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namespace {
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bool IsCLIError(const std::string_view msg) {
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return HasErrorPrefix(msg, "cli");
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}
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} // namespace
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void LogInfo(const std::string_view msg, std::ostream& os) {
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os << "[info] " << msg << "\n";
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}
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void LogError(const std::string_view msg, std::ostream& os) {
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os << "[error] " << msg << "\n";
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}
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std::string FormatError(const std::string_view stage,
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const std::string_view msg) {
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return "[" + std::string(stage) + "] " + std::string(msg);
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}
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std::string FormatErrorAt(const std::string_view stage, const std::size_t line,
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const std::size_t column,
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const std::string_view msg) {
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return "[" + std::string(stage) + "] @" + std::to_string(line) + ":" +
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std::to_string(column) + " - " + std::string(msg);
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}
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bool HasErrorPrefix(const std::string_view msg, const std::string_view stage) {
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const std::string prefix = "[" + std::string(stage) + "]";
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return msg.rfind(prefix, 0) == 0;
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}
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void PrintException(std::ostream& os, const std::exception& ex) {
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LogError(ex.what(), os);
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if (IsCLIError(ex.what())) {
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os << "\n";
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PrintHelp(os);
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}
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}
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void PrintHelp(std::ostream& os) {
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os << "SysY Compiler\n"
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<< "\n"
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<< "用法:\n"
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<< " compiler <input.sy> -IR -o <output.ll> [-O1] # 输出 IR\n"
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<< " compiler <input.sy> -S -o <output.s> [-O1] # 输出汇编\n"
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<< "\n"
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<< "选项:\n"
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<< " -IR 输出中间代码（IR 文本）\n"
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<< " -S 输出 AArch64 汇编码\n"
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<< " -o <file> 输出文件（默认 stdout）\n"
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<< " -O1 启用 IR 优化（Mem2Reg + 标量优化）\n"
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<< " -h, --help 打印帮助信息并退出\n"
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<< "\n"
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<< "兼容格式（仍可使用）:\n"
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<< " --emit-ir 同 -IR\n"
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<< " --emit-asm 同 -S\n"
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<< "\n"
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<< "示例:\n"
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<< " compiler test.sy -IR -o test.ll -O1 # 生成优化 IR\n"
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<< " compiler test.sy -S -o test.s -O1 # 生成优化汇编\n"
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<< " compiler test.sy -IR # IR 输出到 stdout\n";
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}
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