mirror of
https://github.com/luau-lang/luau.git
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297 lines
9.3 KiB
C++
297 lines
9.3 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#include "Luau/ModuleResolver.h"
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#include "Luau/TypeInfer.h"
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#include "Luau/BuiltinDefinitions.h"
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#include "Luau/Frontend.h"
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#include "Luau/TypeAttach.h"
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#include "Luau/Transpiler.h"
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#include "FileUtils.h"
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#include "Flags.h"
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#ifdef CALLGRIND
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#include <valgrind/callgrind.h>
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#endif
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LUAU_FASTFLAG(DebugLuauTimeTracing)
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enum class ReportFormat
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{
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Default,
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Luacheck,
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Gnu,
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};
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static void report(ReportFormat format, const char* name, const Luau::Location& loc, const char* type, const char* message)
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{
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switch (format)
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{
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case ReportFormat::Default:
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fprintf(stderr, "%s(%d,%d): %s: %s\n", name, loc.begin.line + 1, loc.begin.column + 1, type, message);
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break;
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case ReportFormat::Luacheck:
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{
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// Note: luacheck's end column is inclusive but our end column is exclusive
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// In addition, luacheck doesn't support multi-line messages, so if the error is multiline we'll fake end column as 100 and hope for the best
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int columnEnd = (loc.begin.line == loc.end.line) ? loc.end.column : 100;
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// Use stdout to match luacheck behavior
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fprintf(stdout, "%s:%d:%d-%d: (W0) %s: %s\n", name, loc.begin.line + 1, loc.begin.column + 1, columnEnd, type, message);
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break;
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}
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case ReportFormat::Gnu:
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// Note: GNU end column is inclusive but our end column is exclusive
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fprintf(stderr, "%s:%d.%d-%d.%d: %s: %s\n", name, loc.begin.line + 1, loc.begin.column + 1, loc.end.line + 1, loc.end.column, type, message);
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break;
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}
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}
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static void reportError(const Luau::Frontend& frontend, ReportFormat format, const Luau::TypeError& error)
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{
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std::string humanReadableName = frontend.fileResolver->getHumanReadableModuleName(error.moduleName);
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if (const Luau::SyntaxError* syntaxError = Luau::get_if<Luau::SyntaxError>(&error.data))
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report(format, humanReadableName.c_str(), error.location, "SyntaxError", syntaxError->message.c_str());
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else
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report(format, humanReadableName.c_str(), error.location, "TypeError",
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Luau::toString(error, Luau::TypeErrorToStringOptions{frontend.fileResolver}).c_str());
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}
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static void reportWarning(ReportFormat format, const char* name, const Luau::LintWarning& warning)
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{
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report(format, name, warning.location, Luau::LintWarning::getName(warning.code), warning.text.c_str());
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}
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static bool analyzeFile(Luau::Frontend& frontend, const char* name, ReportFormat format, bool annotate)
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{
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Luau::CheckResult cr;
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if (frontend.isDirty(name))
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cr = frontend.check(name);
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if (!frontend.getSourceModule(name))
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{
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fprintf(stderr, "Error opening %s\n", name);
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return false;
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}
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for (auto& error : cr.errors)
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reportError(frontend, format, error);
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Luau::LintResult lr = frontend.lint(name);
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std::string humanReadableName = frontend.fileResolver->getHumanReadableModuleName(name);
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for (auto& error : lr.errors)
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reportWarning(format, humanReadableName.c_str(), error);
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for (auto& warning : lr.warnings)
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reportWarning(format, humanReadableName.c_str(), warning);
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if (annotate)
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{
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Luau::SourceModule* sm = frontend.getSourceModule(name);
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Luau::ModulePtr m = frontend.moduleResolver.getModule(name);
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Luau::attachTypeData(*sm, *m);
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std::string annotated = Luau::transpileWithTypes(*sm->root);
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printf("%s", annotated.c_str());
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}
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return cr.errors.empty() && lr.errors.empty();
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}
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static void displayHelp(const char* argv0)
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{
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printf("Usage: %s [--mode] [options] [file list]\n", argv0);
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printf("\n");
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printf("Available modes:\n");
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printf(" omitted: typecheck and lint input files\n");
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printf(" --annotate: typecheck input files and output source with type annotations\n");
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printf("\n");
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printf("Available options:\n");
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printf(" --formatter=plain: report analysis errors in Luacheck-compatible format\n");
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printf(" --formatter=gnu: report analysis errors in GNU-compatible format\n");
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printf(" --mode=strict: default to strict mode when typechecking\n");
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printf(" --timetrace: record compiler time tracing information into trace.json\n");
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}
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static int assertionHandler(const char* expr, const char* file, int line, const char* function)
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{
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printf("%s(%d): ASSERTION FAILED: %s\n", file, line, expr);
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fflush(stdout);
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return 1;
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}
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struct CliFileResolver : Luau::FileResolver
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{
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std::optional<Luau::SourceCode> readSource(const Luau::ModuleName& name) override
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{
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Luau::SourceCode::Type sourceType;
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std::optional<std::string> source = std::nullopt;
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// If the module name is "-", then read source from stdin
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if (name == "-")
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{
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source = readStdin();
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sourceType = Luau::SourceCode::Script;
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}
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else
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{
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source = readFile(name);
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sourceType = Luau::SourceCode::Module;
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}
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if (!source)
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return std::nullopt;
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return Luau::SourceCode{*source, sourceType};
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}
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std::optional<Luau::ModuleInfo> resolveModule(const Luau::ModuleInfo* context, Luau::AstExpr* node) override
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{
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if (Luau::AstExprConstantString* expr = node->as<Luau::AstExprConstantString>())
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{
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Luau::ModuleName name = std::string(expr->value.data, expr->value.size) + ".luau";
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if (!readFile(name))
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{
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// fall back to .lua if a module with .luau doesn't exist
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name = std::string(expr->value.data, expr->value.size) + ".lua";
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}
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return {{name}};
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}
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return std::nullopt;
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}
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std::string getHumanReadableModuleName(const Luau::ModuleName& name) const override
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{
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if (name == "-")
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return "stdin";
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return name;
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}
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};
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struct CliConfigResolver : Luau::ConfigResolver
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{
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Luau::Config defaultConfig;
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mutable std::unordered_map<std::string, Luau::Config> configCache;
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mutable std::vector<std::pair<std::string, std::string>> configErrors;
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CliConfigResolver(Luau::Mode mode)
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{
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defaultConfig.mode = mode;
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}
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const Luau::Config& getConfig(const Luau::ModuleName& name) const override
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{
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std::optional<std::string> path = getParentPath(name);
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if (!path)
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return defaultConfig;
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return readConfigRec(*path);
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}
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const Luau::Config& readConfigRec(const std::string& path) const
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{
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auto it = configCache.find(path);
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if (it != configCache.end())
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return it->second;
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std::optional<std::string> parent = getParentPath(path);
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Luau::Config result = parent ? readConfigRec(*parent) : defaultConfig;
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std::string configPath = joinPaths(path, Luau::kConfigName);
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if (std::optional<std::string> contents = readFile(configPath))
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{
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std::optional<std::string> error = Luau::parseConfig(*contents, result);
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if (error)
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configErrors.push_back({configPath, *error});
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}
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return configCache[path] = result;
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}
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};
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int main(int argc, char** argv)
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{
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Luau::assertHandler() = assertionHandler;
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setLuauFlagsDefault();
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if (argc >= 2 && strcmp(argv[1], "--help") == 0)
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{
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displayHelp(argv[0]);
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return 0;
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}
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ReportFormat format = ReportFormat::Default;
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Luau::Mode mode = Luau::Mode::Nonstrict;
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bool annotate = false;
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for (int i = 1; i < argc; ++i)
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{
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if (argv[i][0] != '-')
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continue;
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if (strcmp(argv[i], "--formatter=plain") == 0)
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format = ReportFormat::Luacheck;
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else if (strcmp(argv[i], "--formatter=gnu") == 0)
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format = ReportFormat::Gnu;
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else if (strcmp(argv[i], "--mode=strict") == 0)
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mode = Luau::Mode::Strict;
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else if (strcmp(argv[i], "--annotate") == 0)
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annotate = true;
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else if (strcmp(argv[i], "--timetrace") == 0)
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FFlag::DebugLuauTimeTracing.value = true;
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else if (strncmp(argv[i], "--fflags=", 9) == 0)
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setLuauFlags(argv[i] + 9);
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}
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#if !defined(LUAU_ENABLE_TIME_TRACE)
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if (FFlag::DebugLuauTimeTracing)
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{
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fprintf(stderr, "To run with --timetrace, Luau has to be built with LUAU_ENABLE_TIME_TRACE enabled\n");
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return 1;
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}
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#endif
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Luau::FrontendOptions frontendOptions;
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frontendOptions.retainFullTypeGraphs = annotate;
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CliFileResolver fileResolver;
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CliConfigResolver configResolver(mode);
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Luau::Frontend frontend(&fileResolver, &configResolver, frontendOptions);
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Luau::registerBuiltinGlobals(frontend.typeChecker, frontend.globals);
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Luau::freeze(frontend.globals.globalTypes);
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#ifdef CALLGRIND
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CALLGRIND_ZERO_STATS;
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#endif
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std::vector<std::string> files = getSourceFiles(argc, argv);
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int failed = 0;
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for (const std::string& path : files)
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failed += !analyzeFile(frontend, path.c_str(), format, annotate);
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if (!configResolver.configErrors.empty())
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{
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failed += int(configResolver.configErrors.size());
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for (const auto& pair : configResolver.configErrors)
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fprintf(stderr, "%s: %s\n", pair.first.c_str(), pair.second.c_str());
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}
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if (format == ReportFormat::Luacheck)
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return 0;
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else
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return failed ? 1 : 0;
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}
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