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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 (课程实验最小可运行示例)\n"
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<< "\n"
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<< "用法:\n"
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<< " compiler [--help] [--emit-parse-tree] [--emit-ir] [--emit-asm] <input.sy>\n"
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<< "\n"
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<< "选项:\n"
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<< " -h, --help 打印帮助信息并退出\n"
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<< " --emit-parse-tree 仅在显式模式下启用语法树输出\n"
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<< " --emit-ir 仅在显式模式下启用 IR 输出\n"
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<< " --emit-asm 仅在显式模式下启用 AArch64 汇编输出\n"
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<< "\n"
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<< "说明:\n"
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<< " - 默认输出 IR\n"
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<< " - 若使用 --emit-parse-tree/--emit-ir/--emit-asm，则仅输出显式选择的阶段\n"
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<< " - 可使用重定向写入文件:\n"
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<< " compiler --emit-asm test/test_case/simple_add.sy > out.s\n";
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}
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