mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-14 06:00:39 +00:00
b570ff0a37
This week we only have updates to new type solver and JIT. Both projects are still in the process of being built out. Neither are ready for general use yet. In the new solver, we fixed issues with recursive type aliases. Duplicated type parameters are once again reported, exported types are being recorder and function argument names are placed inside function types. We also made improvements to restore parts of bidirectional type tracking. On native code generation side, namecall instruction lowering was fixed, we fixed inconsistencies in IR command definitions and added utility function to help with constant folding.
649 lines
19 KiB
C++
649 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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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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if (FFlag::DebugLuauDeferredConstraintResolution)
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{
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Luau::check(
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*sourceModule,
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{},
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frontend.builtinTypes,
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NotNull{&ice},
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NotNull{&moduleResolver},
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NotNull{&fileResolver},
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typeChecker.globalScope,
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NotNull{&typeChecker.unifierState},
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frontend.options
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);
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}
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else
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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);
|
|
Luau::freeze(frontend.typeCheckerForAutocomplete.globalTypes);
|
|
}
|
|
|
|
ModuleName fromString(std::string_view name)
|
|
{
|
|
return ModuleName(name);
|
|
}
|
|
|
|
std::string rep(const std::string& s, size_t n)
|
|
{
|
|
std::string r;
|
|
r.reserve(s.length() * n);
|
|
for (size_t i = 0; i < n; ++i)
|
|
r += s;
|
|
return r;
|
|
}
|
|
|
|
bool isInArena(TypeId t, const TypeArena& arena)
|
|
{
|
|
return arena.types.contains(t);
|
|
}
|
|
|
|
void dumpErrors(const ModulePtr& module)
|
|
{
|
|
for (const auto& error : module->errors)
|
|
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};
|
|
globalScope->exportedTypeBindings["tbl"] = TypeFun{{}, frontend->builtinTypes->tableType};
|
|
}
|
|
|
|
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"});
|
|
|
|
addGlobalBinding(*frontend, "Child", {childType});
|
|
moduleScope->exportedTypeBindings["Child"] = TypeFun{{}, childType};
|
|
|
|
TypeId anotherChildType = arena.addType(ClassType{"AnotherChild", {}, parentType, std::nullopt, {}, nullptr, "Test"});
|
|
|
|
addGlobalBinding(*frontend, "AnotherChild", {anotherChildType});
|
|
moduleScope->exportedTypeBindings["AnotherChild"] = TypeFun{{}, anotherChildType};
|
|
|
|
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
|