634 lines
19 KiB
C++
634 lines
19 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 "Fixture.h"
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#include "Luau/AstQuery.h"
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#include "Luau/BuiltinDefinitions.h"
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#include "Luau/Constraint.h"
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#include "Luau/ModuleResolver.h"
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#include "Luau/NotNull.h"
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#include "Luau/Parser.h"
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#include "Luau/Type.h"
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#include "Luau/TypeAttach.h"
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#include "Luau/Transpiler.h"
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#include "doctest.h"
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#include <algorithm>
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#include <sstream>
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#include <string_view>
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#include <iostream>
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static const char* mainModuleName = "MainModule";
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LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution);
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LUAU_FASTFLAG(LuauUnknownAndNeverType)
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LUAU_FASTFLAG(LuauReportShadowedTypeAlias)
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extern std::optional<unsigned> randomSeed; // tests/main.cpp
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namespace Luau
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{
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std::optional<ModuleInfo> TestFileResolver::resolveModuleInfo(const ModuleName& currentModuleName, const AstExpr& pathExpr)
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{
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if (auto name = pathExprToModuleName(currentModuleName, pathExpr))
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return {{*name, false}};
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return std::nullopt;
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}
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const ModulePtr TestFileResolver::getModule(const ModuleName& moduleName) const
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{
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LUAU_ASSERT(false);
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return nullptr;
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}
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bool TestFileResolver::moduleExists(const ModuleName& moduleName) const
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{
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auto it = source.find(moduleName);
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return (it != source.end());
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}
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std::optional<SourceCode> TestFileResolver::readSource(const ModuleName& name)
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{
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auto it = source.find(name);
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if (it == source.end())
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return std::nullopt;
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SourceCode::Type sourceType = SourceCode::Module;
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auto it2 = sourceTypes.find(name);
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if (it2 != sourceTypes.end())
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sourceType = it2->second;
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return SourceCode{it->second, sourceType};
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}
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std::optional<ModuleInfo> TestFileResolver::resolveModule(const ModuleInfo* context, AstExpr* expr)
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{
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if (AstExprGlobal* g = expr->as<AstExprGlobal>())
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{
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if (g->name == "game")
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return ModuleInfo{"game"};
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if (g->name == "workspace")
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return ModuleInfo{"workspace"};
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if (g->name == "script")
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return context ? std::optional<ModuleInfo>(*context) : std::nullopt;
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}
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else if (AstExprIndexName* i = expr->as<AstExprIndexName>(); i && context)
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{
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if (i->index == "Parent")
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{
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std::string_view view = context->name;
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size_t lastSeparatorIndex = view.find_last_of('/');
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if (lastSeparatorIndex == std::string_view::npos)
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return std::nullopt;
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return ModuleInfo{ModuleName(view.substr(0, lastSeparatorIndex)), context->optional};
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}
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else
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{
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return ModuleInfo{context->name + '/' + i->index.value, context->optional};
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}
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}
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else if (AstExprIndexExpr* i = expr->as<AstExprIndexExpr>(); i && context)
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{
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if (AstExprConstantString* index = i->index->as<AstExprConstantString>())
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{
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return ModuleInfo{context->name + '/' + std::string(index->value.data, index->value.size), context->optional};
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}
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}
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else if (AstExprCall* call = expr->as<AstExprCall>(); call && call->self && call->args.size >= 1 && context)
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{
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if (AstExprConstantString* index = call->args.data[0]->as<AstExprConstantString>())
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{
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AstName func = call->func->as<AstExprIndexName>()->index;
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if (func == "GetService" && context->name == "game")
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return ModuleInfo{"game/" + std::string(index->value.data, index->value.size)};
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}
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}
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return std::nullopt;
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}
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std::string TestFileResolver::getHumanReadableModuleName(const ModuleName& name) const
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{
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return name;
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}
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std::optional<std::string> TestFileResolver::getEnvironmentForModule(const ModuleName& name) const
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{
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auto it = environments.find(name);
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if (it != environments.end())
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return it->second;
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return std::nullopt;
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}
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const Config& TestConfigResolver::getConfig(const ModuleName& name) const
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{
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auto it = configFiles.find(name);
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if (it != configFiles.end())
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return it->second;
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return defaultConfig;
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}
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Fixture::Fixture(bool freeze, bool prepareAutocomplete)
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: sff_DebugLuauFreezeArena("DebugLuauFreezeArena", freeze)
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, frontend(&fileResolver, &configResolver,
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{/* retainFullTypeGraphs= */ true, /* forAutocomplete */ false, /* randomConstraintResolutionSeed */ randomSeed})
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, typeChecker(frontend.typeChecker)
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, builtinTypes(frontend.builtinTypes)
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{
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configResolver.defaultConfig.mode = Mode::Strict;
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configResolver.defaultConfig.enabledLint.warningMask = ~0ull;
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configResolver.defaultConfig.parseOptions.captureComments = true;
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registerBuiltinTypes(frontend);
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Luau::freeze(frontend.typeChecker.globalTypes);
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Luau::freeze(frontend.typeCheckerForAutocomplete.globalTypes);
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Luau::setPrintLine([](auto s) {});
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}
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Fixture::~Fixture()
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{
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Luau::resetPrintLine();
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}
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AstStatBlock* Fixture::parse(const std::string& source, const ParseOptions& parseOptions)
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{
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sourceModule.reset(new SourceModule);
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ParseResult result = Parser::parse(source.c_str(), source.length(), *sourceModule->names, *sourceModule->allocator, parseOptions);
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sourceModule->name = fromString(mainModuleName);
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sourceModule->root = result.root;
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sourceModule->mode = parseMode(result.hotcomments);
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sourceModule->hotcomments = std::move(result.hotcomments);
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if (!result.errors.empty())
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{
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// if AST is available, check how lint and typecheck handle error nodes
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if (result.root)
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{
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frontend.lint(*sourceModule);
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typeChecker.check(*sourceModule, sourceModule->mode.value_or(Luau::Mode::Nonstrict));
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}
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throw ParseErrors(result.errors);
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}
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return result.root;
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}
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CheckResult Fixture::check(Mode mode, std::string source)
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{
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ModuleName mm = fromString(mainModuleName);
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configResolver.defaultConfig.mode = mode;
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fileResolver.source[mm] = std::move(source);
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frontend.markDirty(mm);
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CheckResult result = frontend.check(mm);
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return result;
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}
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CheckResult Fixture::check(const std::string& source)
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{
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return check(Mode::Strict, source);
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}
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LintResult Fixture::lint(const std::string& source, const std::optional<LintOptions>& lintOptions)
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{
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ParseOptions parseOptions;
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parseOptions.captureComments = true;
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configResolver.defaultConfig.mode = Mode::Nonstrict;
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parse(source, parseOptions);
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return frontend.lint(*sourceModule, lintOptions);
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}
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LintResult Fixture::lintTyped(const std::string& source, const std::optional<LintOptions>& lintOptions)
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{
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check(source);
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ModuleName mm = fromString(mainModuleName);
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return frontend.lint(mm, lintOptions);
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}
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ParseResult Fixture::parseEx(const std::string& source, const ParseOptions& options)
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{
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ParseResult result = tryParse(source, options);
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if (!result.errors.empty())
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throw ParseErrors(result.errors);
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return result;
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}
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ParseResult Fixture::tryParse(const std::string& source, const ParseOptions& parseOptions)
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{
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ParseOptions options = parseOptions;
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options.allowDeclarationSyntax = true;
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sourceModule.reset(new SourceModule);
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ParseResult result = Parser::parse(source.c_str(), source.length(), *sourceModule->names, *sourceModule->allocator, options);
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sourceModule->root = result.root;
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return result;
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}
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ParseResult Fixture::matchParseError(const std::string& source, const std::string& message, std::optional<Location> location)
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{
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ParseOptions options;
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options.allowDeclarationSyntax = true;
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sourceModule.reset(new SourceModule);
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ParseResult result = Parser::parse(source.c_str(), source.length(), *sourceModule->names, *sourceModule->allocator, options);
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CHECK_MESSAGE(!result.errors.empty(), "Expected a parse error in '" << source << "'");
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if (!result.errors.empty())
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{
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CHECK_EQ(result.errors.front().getMessage(), message);
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if (location)
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CHECK_EQ(result.errors.front().getLocation(), *location);
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}
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return result;
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}
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ParseResult Fixture::matchParseErrorPrefix(const std::string& source, const std::string& prefix)
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{
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ParseOptions options;
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options.allowDeclarationSyntax = true;
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sourceModule.reset(new SourceModule);
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ParseResult result = Parser::parse(source.c_str(), source.length(), *sourceModule->names, *sourceModule->allocator, options);
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CHECK_MESSAGE(!result.errors.empty(), "Expected a parse error in '" << source << "'");
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if (!result.errors.empty())
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{
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const std::string& message = result.errors.front().getMessage();
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CHECK_GE(message.length(), prefix.length());
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CHECK_EQ(prefix, message.substr(0, prefix.size()));
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}
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return result;
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}
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ModulePtr Fixture::getMainModule()
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{
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return frontend.moduleResolver.getModule(fromString(mainModuleName));
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}
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SourceModule* Fixture::getMainSourceModule()
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{
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return frontend.getSourceModule(fromString(mainModuleName));
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}
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std::optional<PrimitiveType::Type> Fixture::getPrimitiveType(TypeId ty)
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{
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REQUIRE(ty != nullptr);
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TypeId aType = follow(ty);
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REQUIRE(aType != nullptr);
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const PrimitiveType* pt = get<PrimitiveType>(aType);
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if (pt != nullptr)
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return pt->type;
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else
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return std::nullopt;
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}
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std::optional<TypeId> Fixture::getType(const std::string& name)
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{
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ModulePtr module = getMainModule();
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REQUIRE(module);
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if (!module->hasModuleScope())
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return std::nullopt;
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if (FFlag::DebugLuauDeferredConstraintResolution)
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return linearSearchForBinding(module->getModuleScope().get(), name.c_str());
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else
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return lookupName(module->getModuleScope(), name);
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}
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TypeId Fixture::requireType(const std::string& name)
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{
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std::optional<TypeId> ty = getType(name);
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REQUIRE_MESSAGE(bool(ty), "Unable to requireType \"" << name << "\"");
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return follow(*ty);
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}
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TypeId Fixture::requireType(const ModuleName& moduleName, const std::string& name)
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{
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ModulePtr module = frontend.moduleResolver.getModule(moduleName);
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REQUIRE(module);
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return requireType(module, name);
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}
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TypeId Fixture::requireType(const ModulePtr& module, const std::string& name)
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{
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if (!module->hasModuleScope())
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FAIL("requireType: module scope data is not available");
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return requireType(module->getModuleScope(), name);
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}
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TypeId Fixture::requireType(const ScopePtr& scope, const std::string& name)
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{
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std::optional<TypeId> ty = lookupName(scope, name);
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REQUIRE_MESSAGE(ty, "requireType: No type \"" << name << "\"");
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return *ty;
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}
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std::optional<TypeId> Fixture::findTypeAtPosition(Position position)
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{
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ModulePtr module = getMainModule();
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SourceModule* sourceModule = getMainSourceModule();
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return Luau::findTypeAtPosition(*module, *sourceModule, position);
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}
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std::optional<TypeId> Fixture::findExpectedTypeAtPosition(Position position)
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{
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ModulePtr module = getMainModule();
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SourceModule* sourceModule = getMainSourceModule();
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return Luau::findExpectedTypeAtPosition(*module, *sourceModule, position);
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}
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TypeId Fixture::requireTypeAtPosition(Position position)
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{
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auto ty = findTypeAtPosition(position);
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REQUIRE_MESSAGE(ty, "requireTypeAtPosition: No type at position " << position);
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return *ty;
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}
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std::optional<TypeId> Fixture::lookupType(const std::string& name)
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{
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ModulePtr module = getMainModule();
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if (!module->hasModuleScope())
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return std::nullopt;
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if (auto typeFun = module->getModuleScope()->lookupType(name))
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return typeFun->type;
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return std::nullopt;
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}
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std::optional<TypeId> Fixture::lookupImportedType(const std::string& moduleAlias, const std::string& name)
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{
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ModulePtr module = getMainModule();
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if (!module->hasModuleScope())
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FAIL("lookupImportedType: module scope data is not available");
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if (auto typeFun = module->getModuleScope()->lookupImportedType(moduleAlias, name))
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return typeFun->type;
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return std::nullopt;
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}
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TypeId Fixture::requireTypeAlias(const std::string& name)
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{
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std::optional<TypeId> ty = lookupType(name);
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REQUIRE(ty);
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return *ty;
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}
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std::string Fixture::decorateWithTypes(const std::string& code)
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{
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fileResolver.source[mainModuleName] = code;
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Luau::CheckResult typeInfo = frontend.check(mainModuleName);
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SourceModule* sourceModule = frontend.getSourceModule(mainModuleName);
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attachTypeData(*sourceModule, *frontend.moduleResolver.getModule(mainModuleName));
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return transpileWithTypes(*sourceModule->root);
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}
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void Fixture::dumpErrors(std::ostream& os, const std::vector<TypeError>& errors)
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{
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for (const auto& error : errors)
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{
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os << std::endl;
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os << "Error: " << error << std::endl;
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std::string_view source = fileResolver.source[error.moduleName];
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std::vector<std::string_view> lines = Luau::split(source, '\n');
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if (error.location.begin.line >= lines.size())
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{
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os << "\tSource not available?" << std::endl;
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continue;
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}
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std::string_view theLine = lines[error.location.begin.line];
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os << "Line:\t" << theLine << std::endl;
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int startCol = error.location.begin.column;
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int endCol = error.location.end.line == error.location.begin.line ? error.location.end.column : int(theLine.size());
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os << '\t' << std::string(startCol, ' ') << std::string(std::max(1, endCol - startCol), '-') << std::endl;
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}
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}
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void Fixture::registerTestTypes()
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{
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addGlobalBinding(frontend, "game", typeChecker.anyType, "@luau");
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addGlobalBinding(frontend, "workspace", typeChecker.anyType, "@luau");
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addGlobalBinding(frontend, "script", typeChecker.anyType, "@luau");
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}
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void Fixture::dumpErrors(const CheckResult& cr)
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{
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std::string error = getErrors(cr);
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if (!error.empty())
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MESSAGE(error);
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}
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void Fixture::dumpErrors(const ModulePtr& module)
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{
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std::stringstream ss;
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dumpErrors(ss, module->errors);
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if (!ss.str().empty())
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MESSAGE(ss.str());
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}
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void Fixture::dumpErrors(const Module& module)
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{
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std::stringstream ss;
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dumpErrors(ss, module.errors);
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if (!ss.str().empty())
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MESSAGE(ss.str());
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}
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std::string Fixture::getErrors(const CheckResult& cr)
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{
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std::stringstream ss;
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dumpErrors(ss, cr.errors);
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return ss.str();
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}
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void Fixture::validateErrors(const std::vector<Luau::TypeError>& errors)
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{
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std::ostringstream oss;
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// This helps us validate that error stringification doesn't crash, using both user-facing and internal test-only representation
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// Also we exercise error comparison to make sure it's at least able to compare the error equal to itself
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for (const Luau::TypeError& e : errors)
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{
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oss.clear();
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oss << e;
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toString(e);
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// CHECK(e == e); TODO: this doesn't work due to union/intersection type vars
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}
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}
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LoadDefinitionFileResult Fixture::loadDefinition(const std::string& source)
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{
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unfreeze(typeChecker.globalTypes);
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LoadDefinitionFileResult result = frontend.loadDefinitionFile(source, "@test");
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freeze(typeChecker.globalTypes);
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if (result.module)
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dumpErrors(result.module);
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REQUIRE_MESSAGE(result.success, "loadDefinition: unable to load definition file");
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return result;
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}
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BuiltinsFixture::BuiltinsFixture(bool freeze, bool prepareAutocomplete)
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: Fixture(freeze, prepareAutocomplete)
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{
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Luau::unfreeze(frontend.typeChecker.globalTypes);
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Luau::unfreeze(frontend.typeCheckerForAutocomplete.globalTypes);
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registerBuiltinGlobals(frontend);
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if (prepareAutocomplete)
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registerBuiltinGlobals(frontend.typeCheckerForAutocomplete);
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registerTestTypes();
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Luau::freeze(frontend.typeChecker.globalTypes);
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Luau::freeze(frontend.typeCheckerForAutocomplete.globalTypes);
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}
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ModuleName fromString(std::string_view name)
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{
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return ModuleName(name);
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}
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std::string rep(const std::string& s, size_t n)
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{
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std::string r;
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r.reserve(s.length() * n);
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for (size_t i = 0; i < n; ++i)
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r += s;
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return r;
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}
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bool isInArena(TypeId t, const TypeArena& arena)
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{
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return arena.types.contains(t);
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}
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void dumpErrors(const ModulePtr& module)
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|
{
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|
for (const auto& error : module->errors)
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|
std::cout << "Error: " << error << std::endl;
|
|
}
|
|
|
|
void dump(const std::string& name, TypeId ty)
|
|
{
|
|
std::cout << name << '\t' << toString(ty, {true}) << std::endl;
|
|
}
|
|
|
|
std::optional<TypeId> lookupName(ScopePtr scope, const std::string& name)
|
|
{
|
|
auto binding = scope->linearSearchForBinding(name);
|
|
if (binding)
|
|
return binding->typeId;
|
|
else
|
|
return std::nullopt;
|
|
}
|
|
|
|
std::optional<TypeId> linearSearchForBinding(Scope* scope, const char* name)
|
|
{
|
|
while (scope)
|
|
{
|
|
for (const auto& [n, ty] : scope->bindings)
|
|
{
|
|
if (n.astName() == name)
|
|
return ty.typeId;
|
|
}
|
|
|
|
scope = scope->parent.get();
|
|
}
|
|
|
|
return std::nullopt;
|
|
}
|
|
|
|
void registerHiddenTypes(Frontend* frontend)
|
|
{
|
|
TypeId t = frontend->globalTypes.addType(GenericType{"T"});
|
|
GenericTypeDefinition genericT{t};
|
|
|
|
ScopePtr globalScope = frontend->getGlobalScope();
|
|
globalScope->exportedTypeBindings["Not"] = TypeFun{{genericT}, frontend->globalTypes.addType(NegationType{t})};
|
|
globalScope->exportedTypeBindings["fun"] = TypeFun{{}, frontend->builtinTypes->functionType};
|
|
globalScope->exportedTypeBindings["cls"] = TypeFun{{}, frontend->builtinTypes->classType};
|
|
globalScope->exportedTypeBindings["err"] = TypeFun{{}, frontend->builtinTypes->errorType};
|
|
}
|
|
|
|
void createSomeClasses(Frontend* frontend)
|
|
{
|
|
TypeArena& arena = frontend->globalTypes;
|
|
unfreeze(arena);
|
|
|
|
ScopePtr moduleScope = frontend->getGlobalScope();
|
|
|
|
TypeId parentType = arena.addType(ClassType{"Parent", {}, frontend->builtinTypes->classType, std::nullopt, {}, nullptr, "Test"});
|
|
|
|
ClassType* parentClass = getMutable<ClassType>(parentType);
|
|
parentClass->props["method"] = {makeFunction(arena, parentType, {}, {})};
|
|
|
|
parentClass->props["virtual_method"] = {makeFunction(arena, parentType, {}, {})};
|
|
|
|
addGlobalBinding(*frontend, "Parent", {parentType});
|
|
moduleScope->exportedTypeBindings["Parent"] = TypeFun{{}, parentType};
|
|
|
|
TypeId childType = arena.addType(ClassType{"Child", {}, parentType, std::nullopt, {}, nullptr, "Test"});
|
|
|
|
ClassType* childClass = getMutable<ClassType>(childType);
|
|
childClass->props["virtual_method"] = {makeFunction(arena, childType, {}, {})};
|
|
|
|
addGlobalBinding(*frontend, "Child", {childType});
|
|
moduleScope->exportedTypeBindings["Child"] = TypeFun{{}, childType};
|
|
|
|
TypeId unrelatedType = arena.addType(ClassType{"Unrelated", {}, frontend->builtinTypes->classType, std::nullopt, {}, nullptr, "Test"});
|
|
|
|
addGlobalBinding(*frontend, "Unrelated", {unrelatedType});
|
|
moduleScope->exportedTypeBindings["Unrelated"] = TypeFun{{}, unrelatedType};
|
|
|
|
for (const auto& [name, ty] : moduleScope->exportedTypeBindings)
|
|
persist(ty.type);
|
|
|
|
freeze(arena);
|
|
}
|
|
|
|
void dump(const std::vector<Constraint>& constraints)
|
|
{
|
|
ToStringOptions opts;
|
|
for (const auto& c : constraints)
|
|
printf("%s\n", toString(c, opts).c_str());
|
|
}
|
|
|
|
} // namespace Luau
|