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Sync to upstream/release/524 (#462)

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Arseny Kapoulkine 2022-04-21 14:44:27 -07:00 committed by GitHub
parent 5bb9f379b0
commit e0a6461173
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53 changed files with 1596 additions and 355 deletions
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2
Analysis/include/Luau/Clone.h
View file

@ -18,7 +18,7 @@ struct CloneState
SeenTypePacks seenTypePacks;
int recursionCount = 0;
bool encounteredFreeType = false;
bool encounteredFreeType = false; // TODO: Remove with LuauLosslessClone.
};
TypePackId clone(TypePackId tp, TypeArena& dest, CloneState& cloneState);

21
Analysis/include/Luau/Frontend.h
View file

@ -13,6 +13,7 @@
#include <optional>
LUAU_FASTFLAG(LuauSeparateTypechecks)
LUAU_FASTFLAG(LuauDirtySourceModule)
namespace Luau
{
@ -57,19 +58,27 @@ std::optional<ModuleName> pathExprToModuleName(const ModuleName& currentModuleNa
struct SourceNode
{
bool isDirty(bool forAutocomplete) const
bool hasDirtySourceModule() const
{
LUAU_ASSERT(FFlag::LuauDirtySourceModule);
return dirtySourceModule;
}
bool hasDirtyModule(bool forAutocomplete) const
{
if (FFlag::LuauSeparateTypechecks)
return forAutocomplete ? dirtyAutocomplete : dirty;
return forAutocomplete ? dirtyModuleForAutocomplete : dirtyModule;
else
return dirty;
return dirtyModule;
}
ModuleName name;
std::unordered_set<ModuleName> requires;
std::vector<std::pair<ModuleName, Location>> requireLocations;
bool dirty = true;
bool dirtyAutocomplete = true;
bool dirtySourceModule = true;
bool dirtyModule = true;
bool dirtyModuleForAutocomplete = true;
double autocompleteLimitsMult = 1.0;
};
@ -163,7 +172,7 @@ struct Frontend
void applyBuiltinDefinitionToEnvironment(const std::string& environmentName, const std::string& definitionName);
private:
std::pair<SourceNode*, SourceModule*> getSourceNode(CheckResult& checkResult, const ModuleName& name, bool forAutocomplete);
std::pair<SourceNode*, SourceModule*> getSourceNode(CheckResult& checkResult, const ModuleName& name, bool forAutocomplete_DEPRECATED);
SourceModule parse(const ModuleName& name, std::string_view src, const ParseOptions& parseOptions);
bool parseGraph(std::vector<ModuleName>& buildQueue, CheckResult& checkResult, const ModuleName& root, bool forAutocomplete);

6
Analysis/include/Luau/TypeVar.h
View file

@ -373,15 +373,17 @@ struct ClassTypeVar
std::optional<TypeId> metatable; // metaclass?
Tags tags;
std::shared_ptr<ClassUserData> userData;
ModuleName definitionModuleName;
ClassTypeVar(
Name name, Props props, std::optional<TypeId> parent, std::optional<TypeId> metatable, Tags tags, std::shared_ptr<ClassUserData> userData)
ClassTypeVar(Name name, Props props, std::optional<TypeId> parent, std::optional<TypeId> metatable, Tags tags,
std::shared_ptr<ClassUserData> userData, ModuleName definitionModuleName)
: name(name)
, props(props)
, parent(parent)
, metatable(metatable)
, tags(tags)
, userData(userData)
, definitionModuleName(definitionModuleName)
{
}
};

1
Analysis/include/Luau/Unifier.h
View file

@ -92,7 +92,6 @@ private:
bool canCacheResult(TypeId subTy, TypeId superTy);
void cacheResult(TypeId subTy, TypeId superTy, size_t prevErrorCount);
void cacheResult_DEPRECATED(TypeId subTy, TypeId superTy);
public:
void tryUnify(TypePackId subTy, TypePackId superTy, bool isFunctionCall = false);

2
Analysis/include/Luau/VisitTypeVar.h
View file

@ -52,7 +52,7 @@ inline void unsee(std::unordered_set<void*>& seen, const void* tv)
inline void unsee(DenseHashSet<void*>& seen, const void* tv)
{
// When DenseHashSet is used for 'visitOnce', where don't forget visited elements
// When DenseHashSet is used for 'visitTypeVarOnce', where don't forget visited elements
}
template<typename F, typename Set>

4
Analysis/src/Autocomplete.cpp
View file

@ -15,6 +15,7 @@
LUAU_FASTFLAGVARIABLE(LuauIfElseExprFixCompletionIssue, false);
LUAU_FASTFLAGVARIABLE(LuauAutocompleteSingletonTypes, false);
LUAU_FASTFLAGVARIABLE(LuauFixAutocompleteClassSecurityLevel, false);
LUAU_FASTFLAG(LuauSelfCallAutocompleteFix)
static const std::unordered_set<std::string> kStatementStartingKeywords = {
@ -462,7 +463,8 @@ static void autocompleteProps(const Module& module, TypeArena* typeArena, TypeId
containingClass = containingClass.value_or(cls);
fillProps(cls->props);
if (cls->parent)
autocompleteProps(module, typeArena, rootTy, *cls->parent, indexType, nodes, result, seen, cls);
autocompleteProps(module, typeArena, rootTy, *cls->parent, indexType, nodes, result, seen,
FFlag::LuauFixAutocompleteClassSecurityLevel ? containingClass : cls);
}
else if (auto tbl = get<TableTypeVar>(ty))
fillProps(tbl->props);

24
Analysis/src/Clone.cpp
View file

@ -10,6 +10,7 @@ LUAU_FASTFLAG(DebugLuauCopyBeforeNormalizing)
LUAU_FASTINTVARIABLE(LuauTypeCloneRecursionLimit, 300)
LUAU_FASTFLAG(LuauTypecheckOptPass)
LUAU_FASTFLAGVARIABLE(LuauLosslessClone, false)
namespace Luau
{
@ -86,6 +87,12 @@ struct TypePackCloner
}
void operator()(const Unifiable::Free& t)
{
if (FFlag::LuauLosslessClone)
{
defaultClone(t);
}
else
{
cloneState.encounteredFreeType = true;
@ -93,6 +100,7 @@ struct TypePackCloner
TypePackId cloned = dest.addTypePack(*err);
seenTypePacks[typePackId] = cloned;
}
}
void operator()(const Unifiable::Generic& t)
{
@ -143,10 +151,18 @@ void TypeCloner::defaultClone(const T& t)
void TypeCloner::operator()(const Unifiable::Free& t)
{
if (FFlag::LuauLosslessClone)
{
defaultClone(t);
}
else
{
cloneState.encounteredFreeType = true;
TypeId err = getSingletonTypes().errorRecoveryType(getSingletonTypes().anyType);
TypeId cloned = dest.addType(*err);
seenTypes[typeId] = cloned;
}
}
void TypeCloner::operator()(const Unifiable::Generic& t)
@ -174,6 +190,7 @@ void TypeCloner::operator()(const PrimitiveTypeVar& t)
void TypeCloner::operator()(const ConstrainedTypeVar& t)
{
if (!FFlag::LuauLosslessClone)
cloneState.encounteredFreeType = true;
TypeId res = dest.addType(ConstrainedTypeVar{t.level});
@ -252,7 +269,7 @@ void TypeCloner::operator()(const TableTypeVar& t)
for (TypePackId& arg : ttv->instantiatedTypePackParams)
arg = clone(arg, dest, cloneState);
if (ttv->state == TableState::Free)
if (!FFlag::LuauLosslessClone && ttv->state == TableState::Free)
{
cloneState.encounteredFreeType = true;
@ -276,7 +293,7 @@ void TypeCloner::operator()(const MetatableTypeVar& t)
void TypeCloner::operator()(const ClassTypeVar& t)
{
TypeId result = dest.addType(ClassTypeVar{t.name, {}, std::nullopt, std::nullopt, t.tags, t.userData});
TypeId result = dest.addType(ClassTypeVar{t.name, {}, std::nullopt, std::nullopt, t.tags, t.userData, t.definitionModuleName});
ClassTypeVar* ctv = getMutable<ClassTypeVar>(result);
seenTypes[typeId] = result;
@ -361,7 +378,10 @@ TypeId clone(TypeId typeId, TypeArena& dest, CloneState& cloneState)
// Persistent types are not being cloned and we get the original type back which might be read-only
if (!res->persistent)
{
asMutable(res)->documentationSymbol = typeId->documentationSymbol;
asMutable(res)->normal = typeId->normal;
}
}
return res;

9
Analysis/src/Error.cpp
View file

@ -8,8 +8,6 @@
#include <stdexcept>
LUAU_FASTFLAGVARIABLE(LuauTypeMismatchModuleName, false);
static std::string wrongNumberOfArgsString(size_t expectedCount, size_t actualCount, const char* argPrefix = nullptr, bool isVariadic = false)
{
std::string s = "expects ";
@ -59,8 +57,6 @@ struct ErrorConverter
std::string result;
if (FFlag::LuauTypeMismatchModuleName)
{
if (givenTypeName == wantedTypeName)
{
if (auto givenDefinitionModule = getDefinitionModuleName(tm.givenType))
@ -75,11 +71,6 @@ struct ErrorConverter
if (result.empty())
result = "Type '" + givenTypeName + "' could not be converted into '" + wantedTypeName + "'";
}
else
{
result = "Type '" + givenTypeName + "' could not be converted into '" + wantedTypeName + "'";
}
if (tm.error)
{

50
Analysis/src/Frontend.cpp
View file

@ -23,6 +23,7 @@ LUAU_FASTFLAG(LuauInferInNoCheckMode)
LUAU_FASTFLAGVARIABLE(LuauKnowsTheDataModel3, false)
LUAU_FASTFLAGVARIABLE(LuauSeparateTypechecks, false)
LUAU_FASTFLAGVARIABLE(LuauAutocompleteDynamicLimits, false)
LUAU_FASTFLAGVARIABLE(LuauDirtySourceModule, false)
LUAU_FASTINTVARIABLE(LuauAutocompleteCheckTimeoutMs, 0)
namespace Luau
@ -358,7 +359,7 @@ CheckResult Frontend::check(const ModuleName& name, std::optional<FrontendOption
CheckResult checkResult;
auto it = sourceNodes.find(name);
if (it != sourceNodes.end() && !it->second.isDirty(frontendOptions.forAutocomplete))
if (it != sourceNodes.end() && !it->second.hasDirtyModule(frontendOptions.forAutocomplete))
{
// No recheck required.
if (FFlag::LuauSeparateTypechecks)
@ -402,7 +403,7 @@ CheckResult Frontend::check(const ModuleName& name, std::optional<FrontendOption
LUAU_ASSERT(sourceNodes.count(moduleName));
SourceNode& sourceNode = sourceNodes[moduleName];
if (!sourceNode.isDirty(frontendOptions.forAutocomplete))
if (!sourceNode.hasDirtyModule(frontendOptions.forAutocomplete))
continue;
LUAU_ASSERT(sourceModules.count(moduleName));
@ -478,7 +479,7 @@ CheckResult Frontend::check(const ModuleName& name, std::optional<FrontendOption
stats.timeCheck += duration;
stats.filesStrict += 1;
sourceNode.dirtyAutocomplete = false;
sourceNode.dirtyModuleForAutocomplete = false;
continue;
}
@ -541,7 +542,7 @@ CheckResult Frontend::check(const ModuleName& name, std::optional<FrontendOption
checkResult.errors.insert(checkResult.errors.end(), module->errors.begin(), module->errors.end());
moduleResolver.modules[moduleName] = std::move(module);
sourceNode.dirty = false;
sourceNode.dirtyModule = false;
}
return checkResult;
@ -618,7 +619,7 @@ bool Frontend::parseGraph(std::vector<ModuleName>& buildQueue, CheckResult& chec
// this relies on the fact that markDirty marks reverse-dependencies dirty as well
// thus if a node is not dirty, all its transitive deps aren't dirty, which means that they won't ever need
// to be built, *and* can't form a cycle with any nodes we did process.
if (!it->second.isDirty(forAutocomplete))
if (!it->second.hasDirtyModule(forAutocomplete))
continue;
// note: this check is technically redundant *except* that getSourceNode has somewhat broken memoization
@ -768,7 +769,7 @@ LintResult Frontend::lint(const SourceModule& module, std::optional<Luau::LintOp
bool Frontend::isDirty(const ModuleName& name, bool forAutocomplete) const
{
auto it = sourceNodes.find(name);
return it == sourceNodes.end() || it->second.isDirty(forAutocomplete);
return it == sourceNodes.end() || it->second.hasDirtyModule(forAutocomplete);
}
/*
@ -810,20 +811,31 @@ void Frontend::markDirty(const ModuleName& name, std::vector<ModuleName>* marked
if (markedDirty)
markedDirty->push_back(next);
if (FFlag::LuauSeparateTypechecks)
if (FFlag::LuauDirtySourceModule)
{
if (sourceNode.dirty && sourceNode.dirtyAutocomplete)
LUAU_ASSERT(FFlag::LuauSeparateTypechecks);
if (sourceNode.dirtySourceModule && sourceNode.dirtyModule && sourceNode.dirtyModuleForAutocomplete)
continue;
sourceNode.dirty = true;
sourceNode.dirtyAutocomplete = true;
sourceNode.dirtySourceModule = true;
sourceNode.dirtyModule = true;
sourceNode.dirtyModuleForAutocomplete = true;
}
else if (FFlag::LuauSeparateTypechecks)
{
if (sourceNode.dirtyModule && sourceNode.dirtyModuleForAutocomplete)
continue;
sourceNode.dirtyModule = true;
sourceNode.dirtyModuleForAutocomplete = true;
}
else
{
if (sourceNode.dirty)
if (sourceNode.dirtyModule)
continue;
sourceNode.dirty = true;
sourceNode.dirtyModule = true;
}
if (0 == reverseDeps.count(name))
@ -851,13 +863,14 @@ const SourceModule* Frontend::getSourceModule(const ModuleName& moduleName) cons
}
// Read AST into sourceModules if necessary. Trace require()s. Report parse errors.
std::pair<SourceNode*, SourceModule*> Frontend::getSourceNode(CheckResult& checkResult, const ModuleName& name, bool forAutocomplete)
std::pair<SourceNode*, SourceModule*> Frontend::getSourceNode(CheckResult& checkResult, const ModuleName& name, bool forAutocomplete_DEPRECATED)
{
LUAU_TIMETRACE_SCOPE("Frontend::getSourceNode", "Frontend");
LUAU_TIMETRACE_ARGUMENT("name", name.c_str());
auto it = sourceNodes.find(name);
if (it != sourceNodes.end() && !it->second.isDirty(forAutocomplete))
if (it != sourceNodes.end() &&
(FFlag::LuauDirtySourceModule ? !it->second.hasDirtySourceModule() : !it->second.hasDirtyModule(forAutocomplete_DEPRECATED)))
{
auto moduleIt = sourceModules.find(name);
if (moduleIt != sourceModules.end())
@ -901,17 +914,20 @@ std::pair<SourceNode*, SourceModule*> Frontend::getSourceNode(CheckResult& check
sourceNode.requires.clear();
sourceNode.requireLocations.clear();
if (FFlag::LuauDirtySourceModule)
sourceNode.dirtySourceModule = false;
if (FFlag::LuauSeparateTypechecks)
{
if (it == sourceNodes.end())
{
sourceNode.dirty = true;
sourceNode.dirtyAutocomplete = true;
sourceNode.dirtyModule = true;
sourceNode.dirtyModuleForAutocomplete = true;
}
}
else
{
sourceNode.dirty = true;
sourceNode.dirtyModule = true;
}
for (const auto& [moduleName, location] : requireTrace.requires)

8
Analysis/src/Module.cpp
View file

@ -14,8 +14,8 @@
#include <algorithm>
LUAU_FASTFLAGVARIABLE(DebugLuauFreezeArena, false)
LUAU_FASTFLAGVARIABLE(LuauCloneDeclaredGlobals, false)
LUAU_FASTFLAG(LuauLowerBoundsCalculation)
LUAU_FASTFLAG(LuauLosslessClone)
namespace Luau
{
@ -182,19 +182,19 @@ bool Module::clonePublicInterface(InternalErrorReporter& ice)
}
}
if (FFlag::LuauCloneDeclaredGlobals)
{
for (auto& [name, ty] : declaredGlobals)
{
ty = clone(ty, interfaceTypes, cloneState);
if (FFlag::LuauLowerBoundsCalculation)
normalize(ty, interfaceTypes, ice);
}
}
freeze(internalTypes);
freeze(interfaceTypes);
if (FFlag::LuauLosslessClone)
return false; // TODO: make function return void.
else
return cloneState.encounteredFreeType;
}

44
Analysis/src/Normalize.cpp
View file

@ -5,7 +5,6 @@
#include <algorithm>
#include "Luau/Clone.h"
#include "Luau/DenseHash.h"
#include "Luau/Substitution.h"
#include "Luau/Unifier.h"
#include "Luau/VisitTypeVar.h"
@ -254,7 +253,7 @@ bool isSubtype(TypeId subTy, TypeId superTy, InternalErrorReporter& ice)
}
template<typename T>
static bool areNormal_(const T& t, const DenseHashSet<void*>& seen, InternalErrorReporter& ice)
static bool areNormal_(const T& t, const std::unordered_set<void*>& seen, InternalErrorReporter& ice)
{
int count = 0;
auto isNormal = [&](TypeId ty) {
@ -262,18 +261,19 @@ static bool areNormal_(const T& t, const DenseHashSet<void*>& seen, InternalErro
if (count >= FInt::LuauNormalizeIterationLimit)
ice.ice("Luau::areNormal hit iteration limit");
return ty->normal || seen.find(asMutable(ty));
// The follow is here because a bound type may not be normal, but the bound type is normal.
return ty->normal || follow(ty)->normal || seen.find(asMutable(ty)) != seen.end();
};
return std::all_of(begin(t), end(t), isNormal);
}
static bool areNormal(const std::vector<TypeId>& types, const DenseHashSet<void*>& seen, InternalErrorReporter& ice)
static bool areNormal(const std::vector<TypeId>& types, const std::unordered_set<void*>& seen, InternalErrorReporter& ice)
{
return areNormal_(types, seen, ice);
}
static bool areNormal(TypePackId tp, const DenseHashSet<void*>& seen, InternalErrorReporter& ice)
static bool areNormal(TypePackId tp, const std::unordered_set<void*>& seen, InternalErrorReporter& ice)
{
tp = follow(tp);
if (get<FreeTypePack>(tp))
@ -288,7 +288,7 @@ static bool areNormal(TypePackId tp, const DenseHashSet<void*>& seen, InternalEr
return true;
if (auto vtp = get<VariadicTypePack>(*tail))
return vtp->ty->normal || seen.find(asMutable(vtp->ty));
return vtp->ty->normal || follow(vtp->ty)->normal || seen.find(asMutable(vtp->ty)) != seen.end();
return true;
}
@ -335,9 +335,14 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const BoundTypeVar& btv)
bool operator()(TypeId ty, const BoundTypeVar& btv, std::unordered_set<void*>& seen)
{
// It should never be the case that this TypeVar is normal, but is bound to a non-normal type.
// A type could be considered normal when it is in the stack, but we will eventually find out it is not normal as normalization progresses.
// So we need to avoid eagerly saying that this bound type is normal if the thing it is bound to is in the stack.
if (seen.find(asMutable(btv.boundTo)) != seen.end())
return false;
// It should never be the case that this TypeVar is normal, but is bound to a non-normal type, except in nontrivial cases.
LUAU_ASSERT(!ty->normal || ty->normal == btv.boundTo->normal);
asMutable(ty)->normal = btv.boundTo->normal;
@ -365,7 +370,7 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const ConstrainedTypeVar& ctvRef, DenseHashSet<void*>& seen)
bool operator()(TypeId ty, const ConstrainedTypeVar& ctvRef, std::unordered_set<void*>& seen)
{
CHECK_ITERATION_LIMIT(false);
@ -391,8 +396,7 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const FunctionTypeVar& ftv) = delete;
bool operator()(TypeId ty, const FunctionTypeVar& ftv, DenseHashSet<void*>& seen)
bool operator()(TypeId ty, const FunctionTypeVar& ftv, std::unordered_set<void*>& seen)
{
CHECK_ITERATION_LIMIT(false);
@ -407,7 +411,7 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const TableTypeVar& ttv, DenseHashSet<void*>& seen)
bool operator()(TypeId ty, const TableTypeVar& ttv, std::unordered_set<void*>& seen)
{
CHECK_ITERATION_LIMIT(false);
@ -419,7 +423,7 @@ struct Normalize
auto checkNormal = [&](TypeId t) {
// if t is on the stack, it is possible that this type is normal.
// If t is not normal and it is not on the stack, this type is definitely not normal.
if (!t->normal && !seen.find(asMutable(t)))
if (!t->normal && seen.find(asMutable(t)) == seen.end())
normal = false;
};
@ -449,7 +453,7 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const MetatableTypeVar& mtv, DenseHashSet<void*>& seen)
bool operator()(TypeId ty, const MetatableTypeVar& mtv, std::unordered_set<void*>& seen)
{
CHECK_ITERATION_LIMIT(false);
@ -477,7 +481,7 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const UnionTypeVar& utvRef, DenseHashSet<void*>& seen)
bool operator()(TypeId ty, const UnionTypeVar& utvRef, std::unordered_set<void*>& seen)
{
CHECK_ITERATION_LIMIT(false);
@ -507,7 +511,7 @@ struct Normalize
return false;
}
bool operator()(TypeId ty, const IntersectionTypeVar& itvRef, DenseHashSet<void*>& seen)
bool operator()(TypeId ty, const IntersectionTypeVar& itvRef, std::unordered_set<void*>& seen)
{
CHECK_ITERATION_LIMIT(false);
@ -775,8 +779,8 @@ std::pair<TypeId, bool> normalize(TypeId ty, TypeArena& arena, InternalErrorRepo
(void)clone(ty, arena, state);
Normalize n{arena, ice, std::move(state.seenTypes), std::move(state.seenTypePacks)};
DenseHashSet<void*> seen{nullptr};
visitTypeVarOnce(ty, n, seen);
std::unordered_set<void*> seen;
visitTypeVar(ty, n, seen);
return {ty, !n.limitExceeded};
}
@ -800,8 +804,8 @@ std::pair<TypePackId, bool> normalize(TypePackId tp, TypeArena& arena, InternalE
(void)clone(tp, arena, state);
Normalize n{arena, ice, std::move(state.seenTypes), std::move(state.seenTypePacks)};
DenseHashSet<void*> seen{nullptr};
visitTypeVarOnce(tp, n, seen);
std::unordered_set<void*> seen;
visitTypeVar(tp, n, seen);
return {tp, !n.limitExceeded};
}

11
Analysis/src/Substitution.cpp
View file

@ -11,6 +11,7 @@ LUAU_FASTFLAG(LuauLowerBoundsCalculation)
LUAU_FASTINTVARIABLE(LuauTarjanChildLimit, 1000)
LUAU_FASTFLAG(LuauTypecheckOptPass)
LUAU_FASTFLAGVARIABLE(LuauSubstituteFollowNewTypes, false)
LUAU_FASTFLAGVARIABLE(LuauSubstituteFollowPossibleMutations, false)
namespace Luau
{
@ -106,7 +107,7 @@ void Tarjan::visitChildren(TypePackId tp, int index)
std::pair<int, bool> Tarjan::indexify(TypeId ty)
{
if (FFlag::LuauTypecheckOptPass)
if (FFlag::LuauTypecheckOptPass && !FFlag::LuauSubstituteFollowPossibleMutations)
LUAU_ASSERT(ty == log->follow(ty));
else
ty = log->follow(ty);
@ -127,7 +128,7 @@ std::pair<int, bool> Tarjan::indexify(TypeId ty)
std::pair<int, bool> Tarjan::indexify(TypePackId tp)
{
if (FFlag::LuauTypecheckOptPass)
if (FFlag::LuauTypecheckOptPass && !FFlag::LuauSubstituteFollowPossibleMutations)
LUAU_ASSERT(tp == log->follow(tp));
else
tp = log->follow(tp);
@ -148,6 +149,7 @@ std::pair<int, bool> Tarjan::indexify(TypePackId tp)
void Tarjan::visitChild(TypeId ty)
{
if (!FFlag::LuauSubstituteFollowPossibleMutations)
ty = log->follow(ty);
edgesTy.push_back(ty);
@ -156,6 +158,7 @@ void Tarjan::visitChild(TypeId ty)
void Tarjan::visitChild(TypePackId tp)
{
if (!FFlag::LuauSubstituteFollowPossibleMutations)
tp = log->follow(tp);
edgesTy.push_back(nullptr);
@ -471,7 +474,7 @@ TypePackId Substitution::clone(TypePackId tp)
void Substitution::foundDirty(TypeId ty)
{
if (FFlag::LuauTypecheckOptPass)
if (FFlag::LuauTypecheckOptPass && !FFlag::LuauSubstituteFollowPossibleMutations)
LUAU_ASSERT(ty == log->follow(ty));
else
ty = log->follow(ty);
@ -484,7 +487,7 @@ void Substitution::foundDirty(TypeId ty)
void Substitution::foundDirty(TypePackId tp)
{
if (FFlag::LuauTypecheckOptPass)
if (FFlag::LuauTypecheckOptPass && !FFlag::LuauSubstituteFollowPossibleMutations)
LUAU_ASSERT(tp == log->follow(tp));
else
tp = log->follow(tp);

2
Analysis/src/ToDot.cpp
View file

@ -327,7 +327,7 @@ void StateDot::visitChildren(TypePackId tp, int index)
}
else if (const VariadicTypePack* vtp = get<VariadicTypePack>(tp))
{
formatAppend(result, "VariadicTypePack %d", index);
formatAppend(result, "VariadicTypePack %s%d", vtp->hidden ? "hidden " : "", index);
finishNodeLabel(tp);
finishNode();

11
Analysis/src/Transpiler.cpp
View file

@ -1024,6 +1024,16 @@ struct Printer
visualizeTypeList(a->returnTypes, true);
}
else if (const auto& a = typeAnnotation.as<AstTypeTable>())
{
AstTypeReference* indexType = a->indexer ? a->indexer->indexType->as<AstTypeReference>() : nullptr;
if (a->props.size == 0 && indexType && indexType->name == "number")
{
writer.symbol("{");
visualizeTypeAnnotation(*a->indexer->resultType);
writer.symbol("}");
}
else
{
CommaSeparatorInserter comma(writer);
@ -1051,6 +1061,7 @@ struct Printer
}
writer.symbol("}");
}
}
else if (auto a = typeAnnotation.as<AstTypeTypeof>())
{
writer.keyword("typeof");

14
Analysis/src/TypeAttach.cpp
View file

@ -479,6 +479,20 @@ public:
{
return visitLocal(al->local);
}
virtual bool visit(AstStatFor* stat) override
{
visitLocal(stat->var);
return true;
}
virtual bool visit(AstStatForIn* stat) override
{
for (size_t i = 0; i < stat->vars.size; ++i)
visitLocal(stat->vars.data[i]);
return true;
}
virtual bool visit(AstExprFunction* fn) override
{
// TODO: add generics if the inferred type of the function is generic CLI-39908

29
Analysis/src/TypeInfer.cpp
View file

@ -1,6 +1,7 @@
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#include "Luau/TypeInfer.h"
#include "Luau/Clone.h"
#include "Luau/Common.h"
#include "Luau/ModuleResolver.h"
#include "Luau/Normalize.h"
@ -47,7 +48,6 @@ LUAU_FASTFLAGVARIABLE(LuauPropertiesGetExpectedType, false)
LUAU_FASTFLAGVARIABLE(LuauStatFunctionSimplify4, false)
LUAU_FASTFLAGVARIABLE(LuauTypecheckOptPass, false)
LUAU_FASTFLAGVARIABLE(LuauUnsealedTableLiteral, false)
LUAU_FASTFLAG(LuauTypeMismatchModuleName)
LUAU_FASTFLAGVARIABLE(LuauTwoPassAliasDefinitionFix, false)
LUAU_FASTFLAGVARIABLE(LuauAssertStripsFalsyTypes, false)
LUAU_FASTFLAGVARIABLE(LuauReturnAnyInsteadOfICE, false) // Eventually removed as false.
@ -61,7 +61,9 @@ LUAU_FASTFLAG(LuauAnyInIsOptionalIsOptional)
LUAU_FASTFLAGVARIABLE(LuauDecoupleOperatorInferenceFromUnifiedTypeInference, false)
LUAU_FASTFLAGVARIABLE(LuauArgCountMismatchSaysAtLeastWhenVariadic, false)
LUAU_FASTFLAGVARIABLE(LuauTableUseCounterInstead, false)
LUAU_FASTFLAGVARIABLE(LuauReturnTypeInferenceInNonstrict, false)
LUAU_FASTFLAGVARIABLE(LuauRecursionLimitException, false);
LUAU_FASTFLAG(LuauLosslessClone)
namespace Luau
{
@ -376,7 +378,7 @@ ModulePtr TypeChecker::checkWithoutRecursionCheck(const SourceModule& module, Mo
prepareErrorsForDisplay(currentModule->errors);
bool encounteredFreeType = currentModule->clonePublicInterface(*iceHandler);
if (encounteredFreeType)
if (!FFlag::LuauLosslessClone && encounteredFreeType)
{
reportError(TypeError{module.root->location,
GenericError{"Free types leaked into this module's public interface. This is an internal Luau error; please report it."}});
@ -785,7 +787,7 @@ void TypeChecker::check(const ScopePtr& scope, const AstStatReturn& return_)
TypePackId retPack = checkExprList(scope, return_.location, return_.list, false, {}, expectedTypes).type;
if (useConstrainedIntersections())
if (FFlag::LuauReturnTypeInferenceInNonstrict ? FFlag::LuauLowerBoundsCalculation : useConstrainedIntersections())
{
unifyLowerBound(retPack, scope->returnType, return_.location);
return;
@ -1241,7 +1243,12 @@ void TypeChecker::check(const ScopePtr& scope, TypeId ty, const ScopePtr& funSco
// If in nonstrict mode and allowing redefinition of global function, restore the previous definition type
// in case this function has a differing signature. The signature discrepancy will be caught in checkBlock.
if (previouslyDefined)
{
if (FFlag::LuauReturnTypeInferenceInNonstrict && FFlag::LuauLowerBoundsCalculation)
quantify(funScope, ty, exprName->location);
globalBindings[name] = oldBinding;
}
else
globalBindings[name] = {quantify(funScope, ty, exprName->location), exprName->location};
@ -1555,7 +1562,7 @@ void TypeChecker::check(const ScopePtr& scope, const AstStatDeclareClass& declar
Name className(declaredClass.name.value);
TypeId classTy = addType(ClassTypeVar(className, {}, superTy, std::nullopt, {}, {}));
TypeId classTy = addType(ClassTypeVar(className, {}, superTy, std::nullopt, {}, {}, currentModuleName));
ClassTypeVar* ctv = getMutable<ClassTypeVar>(classTy);
TypeId metaTy = addType(TableTypeVar{TableState::Sealed, scope->level});
@ -3284,7 +3291,7 @@ std::pair<TypeId, ScopePtr> TypeChecker::checkFunctionSignature(
TypePackId retPack;
if (expr.returnAnnotation)
retPack = resolveTypePack(funScope, *expr.returnAnnotation);
else if (isNonstrictMode())
else if (FFlag::LuauReturnTypeInferenceInNonstrict ? (!FFlag::LuauLowerBoundsCalculation && isNonstrictMode()) : isNonstrictMode())
retPack = anyTypePack;
else if (expectedFunctionType)
{
@ -5328,20 +5335,10 @@ TypeId TypeChecker::resolveType(const ScopePtr& scope, const AstType& annotation
if (const auto& indexer = table->indexer)
tableIndexer = TableIndexer(resolveType(scope, *indexer->indexType), resolveType(scope, *indexer->resultType));
if (FFlag::LuauTypeMismatchModuleName)
{
TableTypeVar ttv{props, tableIndexer, scope->level, TableState::Sealed};
ttv.definitionModuleName = currentModuleName;
return addType(std::move(ttv));
}
else
{
return addType(TableTypeVar{
props, tableIndexer, scope->level,
TableState::Sealed // FIXME: probably want a way to annotate other kinds of tables maybe
});
}
}
else if (const auto& func = annotation.as<AstTypeFunction>())
{
ScopePtr funcScope = childScope(scope, func->location);
@ -5602,8 +5599,6 @@ TypeId TypeChecker::instantiateTypeFun(const ScopePtr& scope, const TypeFun& tf,
{
ttv->instantiatedTypeParams = typeParams;
ttv->instantiatedTypePackParams = typePackParams;
if (FFlag::LuauTypeMismatchModuleName)
ttv->definitionModuleName = currentModuleName;
}

6
Analysis/src/TypeVar.cpp
View file

@ -27,6 +27,7 @@ LUAU_FASTFLAG(LuauErrorRecoveryType)
LUAU_FASTFLAG(LuauSubtypingAddOptPropsToUnsealedTables)
LUAU_FASTFLAG(LuauDiscriminableUnions2)
LUAU_FASTFLAGVARIABLE(LuauAnyInIsOptionalIsOptional, false)
LUAU_FASTFLAGVARIABLE(LuauClassDefinitionModuleInError, false)
namespace Luau
{
@ -304,6 +305,11 @@ std::optional<ModuleName> getDefinitionModuleName(TypeId type)
if (ftv->definition)
return ftv->definition->definitionModuleName;
}
else if (auto ctv = get<ClassTypeVar>(type); ctv && FFlag::LuauClassDefinitionModuleInError)
{
if (!ctv->definitionModuleName.empty())
return ctv->definitionModuleName;
}
return std::nullopt;
}

68
Analysis/src/Unifier.cpp
View file

@ -17,7 +17,6 @@ LUAU_FASTINT(LuauTypeInferTypePackLoopLimit);
LUAU_FASTINT(LuauTypeInferIterationLimit);
LUAU_FASTFLAG(LuauAutocompleteDynamicLimits)
LUAU_FASTINTVARIABLE(LuauTypeInferLowerBoundsIterationLimit, 2000);
LUAU_FASTFLAGVARIABLE(LuauExtendedIndexerError, false);
LUAU_FASTFLAGVARIABLE(LuauTableSubtypingVariance2, false);
LUAU_FASTFLAG(LuauLowerBoundsCalculation);
LUAU_FASTFLAG(LuauErrorRecoveryType);
@ -28,7 +27,6 @@ LUAU_FASTFLAGVARIABLE(LuauTxnLogSeesTypePacks2, false)
LUAU_FASTFLAGVARIABLE(LuauTxnLogCheckForInvalidation, false)
LUAU_FASTFLAGVARIABLE(LuauTxnLogRefreshFunctionPointers, false)
LUAU_FASTFLAGVARIABLE(LuauTxnLogDontRetryForIndexers, false)
LUAU_FASTFLAGVARIABLE(LuauUnifierCacheErrors, false)
LUAU_FASTFLAG(LuauAnyInIsOptionalIsOptional)
LUAU_FASTFLAG(LuauTypecheckOptPass)
@ -474,13 +472,10 @@ void Unifier::tryUnify_(TypeId subTy, TypeId superTy, bool isFunctionCall, bool
if (get<ErrorTypeVar>(subTy))
return tryUnifyWithAny(superTy, subTy);
bool cacheEnabled;
auto& cache = sharedState.cachedUnify;
// What if the types are immutable and we proved their relation before
if (FFlag::LuauUnifierCacheErrors)
{
cacheEnabled = !isFunctionCall && !isIntersection && variance == Invariant;
bool cacheEnabled = !isFunctionCall && !isIntersection && variance == Invariant;
if (cacheEnabled)
{
@ -493,14 +488,6 @@ void Unifier::tryUnify_(TypeId subTy, TypeId superTy, bool isFunctionCall, bool
return;
}
}
}
else
{
cacheEnabled = !isFunctionCall && !isIntersection;
if (cacheEnabled && cache.contains({superTy, subTy}) && (variance == Covariant || cache.contains({subTy, superTy})))
return;
}
// If we have seen this pair of types before, we are currently recursing into cyclic types.
// Here, we assume that the types unify. If they do not, we will find out as we roll back
@ -543,12 +530,6 @@ void Unifier::tryUnify_(TypeId subTy, TypeId superTy, bool isFunctionCall, bool
else if (log.getMutable<TableTypeVar>(superTy) && log.getMutable<TableTypeVar>(subTy))
{
tryUnifyTables(subTy, superTy, isIntersection);
if (!FFlag::LuauUnifierCacheErrors)
{
if (cacheEnabled && errors.empty())
cacheResult_DEPRECATED(subTy, superTy);
}
}
// tryUnifyWithMetatable assumes its first argument is a MetatableTypeVar. The check is otherwise symmetrical.
@ -568,7 +549,7 @@ void Unifier::tryUnify_(TypeId subTy, TypeId superTy, bool isFunctionCall, bool
else
reportError(TypeError{location, TypeMismatch{superTy, subTy}});
if (FFlag::LuauUnifierCacheErrors && cacheEnabled)
if (cacheEnabled)
cacheResult(subTy, superTy, errorCount);
log.popSeen(superTy, subTy);
@ -705,23 +686,12 @@ void Unifier::tryUnifyTypeWithUnion(TypeId subTy, TypeId superTy, const UnionTyp
{
TypeId type = uv->options[i];
if (FFlag::LuauUnifierCacheErrors)
{
if (cache.contains({subTy, type}))
{
startIndex = i;
break;
}
}
else
{
if (cache.contains({type, subTy}) && (variance == Covariant || cache.contains({subTy, type})))
{
startIndex = i;
break;
}
}
}
}
for (size_t i = 0; i < uv->options.size(); ++i)
@ -807,23 +777,12 @@ void Unifier::tryUnifyIntersectionWithType(TypeId subTy, const IntersectionTypeV
{
TypeId type = uv->parts[i];
if (FFlag::LuauUnifierCacheErrors)
{
if (cache.contains({type, superTy}))
{
startIndex = i;
break;
}
}
else
{
if (cache.contains({superTy, type}) && (variance == Covariant || cache.contains({type, superTy})))
{
startIndex = i;
break;
}
}
}
}
for (size_t i = 0; i < uv->parts.size(); ++i)
@ -896,19 +855,6 @@ void Unifier::cacheResult(TypeId subTy, TypeId superTy, size_t prevErrorCount)
}
}
void Unifier::cacheResult_DEPRECATED(TypeId subTy, TypeId superTy)
{
LUAU_ASSERT(!FFlag::LuauUnifierCacheErrors);
if (!canCacheResult(subTy, superTy))
return;
sharedState.cachedUnify.insert({superTy, subTy});
if (variance == Invariant)
sharedState.cachedUnify.insert({subTy, superTy});
}
struct WeirdIter
{
TypePackId packId;
@ -1650,8 +1596,6 @@ void Unifier::tryUnifyTables(TypeId subTy, TypeId superTy, bool isIntersection)
Unifier innerState = makeChildUnifier();
if (FFlag::LuauExtendedIndexerError)
{
innerState.tryUnify_(subTable->indexer->indexType, superTable->indexer->indexType);
bool reported = !innerState.errors.empty();
@ -1662,12 +1606,6 @@ void Unifier::tryUnifyTables(TypeId subTy, TypeId superTy, bool isIntersection)
if (!reported)
checkChildUnifierTypeMismatch(innerState.errors, "[indexer value]", superTy, subTy);
}
else
{
innerState.tryUnifyIndexer(*subTable->indexer, *superTable->indexer);
checkChildUnifierTypeMismatch(innerState.errors, superTy, subTy);
}
if (innerState.errors.empty())
log.concat(std::move(innerState.log));
@ -2225,7 +2163,7 @@ void Unifier::tryUnifyWithClass(TypeId subTy, TypeId superTy, bool reversed)
void Unifier::tryUnifyIndexer(const TableIndexer& subIndexer, const TableIndexer& superIndexer)
{
LUAU_ASSERT(!FFlag::LuauTableSubtypingVariance2 || !FFlag::LuauExtendedIndexerError);
LUAU_ASSERT(!FFlag::LuauTableSubtypingVariance2);
tryUnify_(subIndexer.indexType, superIndexer.indexType);
tryUnify_(subIndexer.indexResultType, superIndexer.indexResultType);

1
Ast/include/Luau/StringUtils.h
View file

@ -19,6 +19,7 @@ std::string format(const char* fmt, ...) LUAU_PRINTF_ATTR(1, 2);
std::string vformat(const char* fmt, va_list args);
void formatAppend(std::string& str, const char* fmt, ...) LUAU_PRINTF_ATTR(2, 3);
void vformatAppend(std::string& ret, const char* fmt, va_list args);
std::string join(const std::vector<std::string_view>& segments, std::string_view delimiter);
std::string join(const std::vector<std::string>& segments, std::string_view delimiter);

8
Ast/src/Parser.cpp
View file

@ -167,6 +167,7 @@ Parser::Parser(const char* buffer, size_t bufferSize, AstNameTable& names, Alloc
Function top;
top.vararg = true;
functionStack.reserve(8);
functionStack.push_back(top);
nameSelf = names.addStatic("self");
@ -186,6 +187,13 @@ Parser::Parser(const char* buffer, size_t bufferSize, AstNameTable& names, Alloc
// all hot comments parsed after the first non-comment lexeme are special in that they don't affect type checking / linting mode
hotcommentHeader = false;
// preallocate some buffers that are very likely to grow anyway; this works around std::vector's inefficient growth policy for small arrays
localStack.reserve(16);
scratchStat.reserve(16);
scratchExpr.reserve(16);
scratchLocal.reserve(16);
scratchBinding.reserve(16);
}
bool Parser::blockFollow(const Lexeme& l)

2
Ast/src/StringUtils.cpp
View file

@ -11,7 +11,7 @@
namespace Luau
{
static void vformatAppend(std::string& ret, const char* fmt, va_list args)
void vformatAppend(std::string& ret, const char* fmt, va_list args)
{
va_list argscopy;
va_copy(argscopy, args);

72
CLI/Repl.cpp
View file

@ -579,7 +579,8 @@ static bool compileFile(const char* name, CompileFormat format)
if (format == CompileFormat::Text)
{
bcb.setDumpFlags(Luau::BytecodeBuilder::Dump_Code | Luau::BytecodeBuilder::Dump_Source | Luau::BytecodeBuilder::Dump_Locals);
bcb.setDumpFlags(Luau::BytecodeBuilder::Dump_Code | Luau::BytecodeBuilder::Dump_Source | Luau::BytecodeBuilder::Dump_Locals |
Luau::BytecodeBuilder::Dump_Remarks);
bcb.setDumpSource(*source);
}
@ -636,13 +637,60 @@ static int assertionHandler(const char* expr, const char* file, int line, const
return 1;
}
static void setLuauFlags(bool state)
{
for (Luau::FValue<bool>* flag = Luau::FValue<bool>::list; flag; flag = flag->next)
{
if (strncmp(flag->name, "Luau", 4) == 0)
flag->value = state;
}
}
static void setFlag(std::string_view name, bool state)
{
for (Luau::FValue<bool>* flag = Luau::FValue<bool>::list; flag; flag = flag->next)
{
if (name == flag->name)
{
flag->value = state;
return;
}
}
fprintf(stderr, "Warning: --fflag unrecognized flag '%.*s'.\n\n", int(name.length()), name.data());
}
static void applyFlagKeyValue(std::string_view element)
{
if (size_t separator = element.find('='); separator != std::string_view::npos)
{
std::string_view key = element.substr(0, separator);
std::string_view value = element.substr(separator + 1);
if (value == "true")
setFlag(key, true);
else if (value == "false")
setFlag(key, false);
else
fprintf(stderr, "Warning: --fflag unrecognized value '%.*s' for flag '%.*s'.\n\n", int(value.length()), value.data(), int(key.length()),
key.data());
}
else
{
if (element == "true")
setLuauFlags(true);
else if (element == "false")
setLuauFlags(false);
else
setFlag(element, true);
}
}
int replMain(int argc, char** argv)
{
Luau::assertHandler() = assertionHandler;
for (Luau::FValue<bool>* flag = Luau::FValue<bool>::list; flag; flag = flag->next)
if (strncmp(flag->name, "Luau", 4) == 0)
flag->value = true;
setLuauFlags(true);
CliMode mode = CliMode::Unknown;
CompileFormat compileFormat{};
@ -727,6 +775,22 @@ int replMain(int argc, char** argv)
return 1;
#endif
}
else if (strncmp(argv[i], "--fflags=", 9) == 0)
{
std::string_view list = argv[i] + 9;
while (!list.empty())
{
size_t ending = list.find(",");
applyFlagKeyValue(list.substr(0, ending));
if (ending != std::string_view::npos)
list.remove_prefix(ending + 1);
else
break;
}
}
else if (argv[i][0] == '-')
{
fprintf(stderr, "Error: Unrecognized option '%s'.\n\n", argv[i]);

6
CMakeLists.txt
View file

@ -73,6 +73,12 @@ else()
list(APPEND LUAU_OPTIONS -Wall) # All warnings
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# Some gcc versions treat var in `if (type var = val)` as unused
# Some gcc versions treat variables used in constexpr if blocks as unused
list(APPEND LUAU_OPTIONS -Wno-unused)
endif()
# Enabled in CI; we should be warning free on our main compiler versions but don't guarantee being warning free everywhere
if(LUAU_WERROR)
if(MSVC)

7
Compiler/include/Luau/BytecodeBuilder.h
View file

@ -3,6 +3,7 @@
#include "Luau/Bytecode.h"
#include "Luau/DenseHash.h"
#include "Luau/StringUtils.h"
#include <string>
@ -80,6 +81,8 @@ public:
void pushDebugUpval(StringRef name);
uint32_t getDebugPC() const;
void addDebugRemark(const char* format, ...) LUAU_PRINTF_ATTR(2, 3);
void finalize();
enum DumpFlags
@ -88,6 +91,7 @@ public:
Dump_Lines = 1 << 1,
Dump_Source = 1 << 2,
Dump_Locals = 1 << 3,
Dump_Remarks = 1 << 4,
};
void setDumpFlags(uint32_t flags)
@ -228,6 +232,9 @@ private:
DenseHashMap<StringRef, unsigned int, StringRefHash> stringTable;
DenseHashMap<uint32_t, uint32_t> debugRemarks;
std::string debugRemarkBuffer;
BytecodeEncoder* encoder = nullptr;
std::string bytecode;

70
Compiler/src/BytecodeBuilder.cpp
View file

@ -181,9 +181,17 @@ BytecodeBuilder::BytecodeBuilder(BytecodeEncoder* encoder)
: constantMap({Constant::Type_Nil, ~0ull})
, tableShapeMap(TableShape())
, stringTable({nullptr, 0})
, debugRemarks(~0u)
, encoder(encoder)
{
LUAU_ASSERT(stringTable.find(StringRef{"", 0}) == nullptr);
// preallocate some buffers that are very likely to grow anyway; this works around std::vector's inefficient growth policy for small arrays
insns.reserve(32);
lines.reserve(32);
constants.reserve(16);
protos.reserve(16);
functions.reserve(8);
}
uint32_t BytecodeBuilder::beginFunction(uint8_t numparams, bool isvararg)
@ -219,8 +227,8 @@ void BytecodeBuilder::endFunction(uint8_t maxstacksize, uint8_t numupvalues)
validate();
#endif
// very approximate: 4 bytes per instruction for code, 1 byte for debug line, and 1-2 bytes for aux data like constants
func.data.reserve(insns.size() * 7);
// very approximate: 4 bytes per instruction for code, 1 byte for debug line, and 1-2 bytes for aux data like constants plus overhead
func.data.reserve(32 + insns.size() * 7);
writeFunction(func.data, currentFunction);
@ -242,6 +250,9 @@ void BytecodeBuilder::endFunction(uint8_t maxstacksize, uint8_t numupvalues)
constantMap.clear();
tableShapeMap.clear();
debugRemarks.clear();
debugRemarkBuffer.clear();
}
void BytecodeBuilder::setMainFunction(uint32_t fid)
@ -505,9 +516,40 @@ uint32_t BytecodeBuilder::getDebugPC() const
return uint32_t(insns.size());
}
void BytecodeBuilder::addDebugRemark(const char* format, ...)
{
if ((dumpFlags & Dump_Remarks) == 0)
return;
size_t offset = debugRemarkBuffer.size();
va_list args;
va_start(args, format);
vformatAppend(debugRemarkBuffer, format, args);
va_end(args);
// we null-terminate all remarks to avoid storing remark length
debugRemarkBuffer += '\0';
debugRemarks[uint32_t(insns.size())] = uint32_t(offset);
}
void BytecodeBuilder::finalize()
{
LUAU_ASSERT(bytecode.empty());
// preallocate space for bytecode blob
size_t capacity = 16;
for (auto& p : stringTable)
capacity += p.first.length + 2;
for (const Function& func : functions)
capacity += func.data.size();
bytecode.reserve(capacity);
// assemble final bytecode blob
bytecode = char(LBC_VERSION);
writeStringTable(bytecode);
@ -663,6 +705,8 @@ void BytecodeBuilder::writeFunction(std::string& ss, uint32_t id) const
void BytecodeBuilder::writeLineInfo(std::string& ss) const
{
LUAU_ASSERT(!lines.empty());
// this function encodes lines inside each span as a 8-bit delta to span baseline
// span is always a power of two; depending on the line info input, it may need to be as low as 1
int span = 1 << 24;
@ -693,7 +737,17 @@ void BytecodeBuilder::writeLineInfo(std::string& ss) const
}
// second pass: compute span base
std::vector<int> baseline((lines.size() - 1) / span + 1);
int baselineOne = 0;
std::vector<int> baselineScratch;
int* baseline = &baselineOne;
size_t baselineSize = (lines.size() - 1) / span + 1;
if (baselineSize > 1)
{
// avoid heap allocation for single-element baseline which is most functions (<256 lines)
baselineScratch.resize(baselineSize);
baseline = baselineScratch.data();
}
for (size_t offset = 0; offset < lines.size(); offset += span)
{
@ -725,7 +779,7 @@ void BytecodeBuilder::writeLineInfo(std::string& ss) const
int lastLine = 0;
for (size_t i = 0; i < baseline.size(); ++i)
for (size_t i = 0; i < baselineSize; ++i)
{
writeInt(ss, baseline[i] - lastLine);
lastLine = baseline[i];
@ -1695,6 +1749,14 @@ std::string BytecodeBuilder::dumpCurrentFunction() const
continue;
}
if (dumpFlags & Dump_Remarks)
{
const uint32_t* remark = debugRemarks.find(uint32_t(code - insns.data()));
if (remark)
formatAppend(result, "REMARK %s\n", debugRemarkBuffer.c_str() + *remark);
}
if (dumpFlags & Dump_Source)
{
int line = lines[code - insns.data()];

127
Compiler/src/Compiler.cpp
View file

@ -8,12 +8,17 @@
#include "Builtins.h"
#include "ConstantFolding.h"
#include "CostModel.h"
#include "TableShape.h"
#include "ValueTracking.h"
#include <algorithm>
#include <bitset>
#include <math.h>
#include <limits.h>
LUAU_FASTINTVARIABLE(LuauCompileLoopUnrollThreshold, 25)
LUAU_FASTINTVARIABLE(LuauCompileLoopUnrollThresholdMaxBoost, 300)
namespace Luau
{
@ -77,8 +82,12 @@ struct Compiler
, globals(AstName())
, variables(nullptr)
, constants(nullptr)
, locstants(nullptr)
, tableShapes(nullptr)
{
// preallocate some buffers that are very likely to grow anyway; this works around std::vector's inefficient growth policy for small arrays
localStack.reserve(16);
upvals.reserve(16);
}
uint8_t getLocal(AstLocal* local)
@ -209,7 +218,9 @@ struct Compiler
Function& f = functions[func];
f.id = fid;
f.upvals = std::move(upvals);
f.upvals = upvals;
upvals.clear(); // note: instead of std::move above, we copy & clear to preserve capacity for future pushes
return fid;
}
@ -2133,10 +2144,119 @@ struct Compiler
pushLocal(stat->vars.data[i], uint8_t(vars + i));
}
int getConstantShort(AstExpr* expr)
{
const Constant* c = constants.find(expr);
if (c && c->type == Constant::Type_Number)
{
double n = c->valueNumber;
if (n >= -32767 && n <= 32767 && double(int(n)) == n)
return int(n);
}
return INT_MIN;
}
bool canUnrollForBody(AstStatFor* stat)
{
struct CanUnrollVisitor : AstVisitor
{
bool result = true;
bool visit(AstExpr* node) override
{
// functions may capture loop variable, and our upval handling doesn't handle elided variables (constant)
result = result && !node->is<AstExprFunction>();
return result;
}
bool visit(AstStat* node) override
{
// while we can easily unroll nested loops, our cost model doesn't take unrolling into account so this can result in code explosion
// we also avoid continue/break since they introduce control flow across iterations
result = result && !node->is<AstStatFor>() && !node->is<AstStatContinue>() && !node->is<AstStatBreak>();
return result;
}
};
CanUnrollVisitor canUnroll;
stat->body->visit(&canUnroll);
return canUnroll.result;
}
bool tryCompileUnrolledFor(AstStatFor* stat, int thresholdBase, int thresholdMaxBoost)
{
int from = getConstantShort(stat->from);
int to = getConstantShort(stat->to);
int step = stat->step ? getConstantShort(stat->step) : 1;
// check that limits are reasonably small and trip count can be computed
if (from == INT_MIN || to == INT_MIN || step == INT_MIN || step == 0 || (step < 0 && to > from) || (step > 0 && to < from))
{
bytecode.addDebugRemark("loop unroll failed: invalid iteration count");
return false;
}
if (!canUnrollForBody(stat))
{
bytecode.addDebugRemark("loop unroll failed: unsupported loop body");
return false;
}
int tripCount = (to - from) / step + 1;
if (tripCount > thresholdBase * thresholdMaxBoost / 100)
{
bytecode.addDebugRemark("loop unroll failed: too many iterations (%d)", tripCount);
return false;
}
AstLocal* var = stat->var;
uint64_t costModel = modelCost(stat->body, &var, 1);
// we use a dynamic cost threshold that's based on the fixed limit boosted by the cost advantage we gain due to unrolling
bool varc = true;
int unrolledCost = computeCost(costModel, &varc, 1) * tripCount;
int baselineCost = (computeCost(costModel, nullptr, 0) + 1) * tripCount;
int unrollProfit = (unrolledCost == 0) ? thresholdMaxBoost : std::min(thresholdMaxBoost, 100 * baselineCost / unrolledCost);
int threshold = thresholdBase * unrollProfit / 100;
if (unrolledCost > threshold)
{
bytecode.addDebugRemark(
"loop unroll failed: too expensive (iterations %d, cost %d, profit %.2fx)", tripCount, unrolledCost, double(unrollProfit) / 100);
return false;
}
bytecode.addDebugRemark("loop unroll succeeded (iterations %d, cost %d, profit %.2fx)", tripCount, unrolledCost, double(unrollProfit) / 100);
for (int i = from; step > 0 ? i <= to : i >= to; i += step)
{
// we need to re-fold constants in the loop body with the new value; this reuses computed constant values elsewhere in the tree
locstants[var].type = Constant::Type_Number;
locstants[var].valueNumber = i;
foldConstants(constants, variables, locstants, stat);
compileStat(stat->body);
}
return true;
}
void compileStatFor(AstStatFor* stat)
{
RegScope rs(this);
// Optimization: small loops can be unrolled when it is profitable
if (options.optimizationLevel >= 2 && isConstant(stat->to) && isConstant(stat->from) && (!stat->step || isConstant(stat->step)))
if (tryCompileUnrolledFor(stat, FInt::LuauCompileLoopUnrollThreshold, FInt::LuauCompileLoopUnrollThresholdMaxBoost))
return;
size_t oldLocals = localStack.size();
size_t oldJumps = loopJumps.size();
@ -2826,6 +2946,8 @@ struct Compiler
: self(self)
, functions(functions)
{
// preallocate the result; this works around std::vector's inefficient growth policy for small arrays
functions.reserve(16);
}
bool visit(AstExprFunction* node) override
@ -2979,6 +3101,7 @@ struct Compiler
DenseHashMap<AstName, Global> globals;
DenseHashMap<AstLocal*, Variable> variables;
DenseHashMap<AstExpr*, Constant> constants;
DenseHashMap<AstLocal*, Constant> locstants;
DenseHashMap<AstExprTable*, TableShape> tableShapes;
unsigned int regTop = 0;
@ -3008,7 +3131,7 @@ void compileOrThrow(BytecodeBuilder& bytecode, AstStatBlock* root, const AstName
if (options.optimizationLevel >= 1)
{
// this pass analyzes constantness of expressions
foldConstants(compiler.constants, compiler.variables, root);
foldConstants(compiler.constants, compiler.variables, compiler.locstants, root);
// this pass analyzes table assignments to estimate table shapes for initially empty tables
predictTableShapes(compiler.tableShapes, root);

13
Compiler/src/ConstantFolding.cpp
View file

@ -191,13 +191,13 @@ struct ConstantVisitor : AstVisitor
{
DenseHashMap<AstExpr*, Constant>& constants;
DenseHashMap<AstLocal*, Variable>& variables;
DenseHashMap<AstLocal*, Constant>& locals;
DenseHashMap<AstLocal*, Constant> locals;
ConstantVisitor(DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables)
ConstantVisitor(
DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables, DenseHashMap<AstLocal*, Constant>& locals)
: constants(constants)
, variables(variables)
, locals(nullptr)
, locals(locals)
{
}
@ -385,9 +385,10 @@ struct ConstantVisitor : AstVisitor
}
};
void foldConstants(DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables, AstNode* root)
void foldConstants(DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables,
DenseHashMap<AstLocal*, Constant>& locals, AstNode* root)
{
ConstantVisitor visitor{constants, variables};
ConstantVisitor visitor{constants, variables, locals};
root->visit(&visitor);
}

3
Compiler/src/ConstantFolding.h
View file

@ -42,7 +42,8 @@ struct Constant
}
};
void foldConstants(DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables, AstNode* root);
void foldConstants(DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables,
DenseHashMap<AstLocal*, Constant>& locals, AstNode* root);
} // namespace Compile
} // namespace Luau

16
VM/src/lapi.cpp
View file

@ -14,6 +14,8 @@
#include <string.h>
LUAU_FASTFLAG(LuauGcWorkTrackFix)
const char* lua_ident = "$Lua: Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio $\n"
"$Authors: R. Ierusalimschy, L. H. de Figueiredo & W. Celes $\n"
"$URL: www.lua.org $\n";
@ -1050,6 +1052,7 @@ int lua_gc(lua_State* L, int what, int data)
{
size_t prevthreshold = g->GCthreshold;
size_t amount = (cast_to(size_t, data) << 10);
ptrdiff_t oldcredit = g->gcstate == GCSpause ? 0 : g->GCthreshold - g->totalbytes;
// temporarily adjust the threshold so that we can perform GC work
if (amount <= g->totalbytes)
@ -1069,9 +1072,9 @@ int lua_gc(lua_State* L, int what, int data)
while (g->GCthreshold <= g->totalbytes)
{
luaC_step(L, false);
size_t stepsize = luaC_step(L, false);
actualwork += g->gcstepsize;
actualwork += FFlag::LuauGcWorkTrackFix ? stepsize : g->gcstepsize;
if (g->gcstate == GCSpause)
{ /* end of cycle? */
@ -1106,6 +1109,14 @@ int lua_gc(lua_State* L, int what, int data)
// if cycle hasn't finished, advance threshold forward for the amount of extra work performed
if (g->gcstate != GCSpause)
{
if (FFlag::LuauGcWorkTrackFix)
{
// if a new cycle was triggered by explicit step, old 'credit' of GC work is 0
ptrdiff_t newthreshold = g->totalbytes + actualwork + oldcredit;
g->GCthreshold = newthreshold < 0 ? 0 : newthreshold;
}
else
{
// if a new cycle was triggered by explicit step, we ignore old threshold as that shows an incorrect 'credit' of GC work
if (waspaused)
@ -1113,6 +1124,7 @@ int lua_gc(lua_State* L, int what, int data)
else
g->GCthreshold = prevthreshold + actualwork;
}
}
break;
}
case LUA_GCSETGOAL:

26
VM/src/lgc.cpp
View file

@ -13,9 +13,10 @@
#include <string.h>
#define GC_SWEEPMAX 40
#define GC_SWEEPCOST 10
#define GC_SWEEPPAGESTEPCOST 4
LUAU_FASTFLAGVARIABLE(LuauGcWorkTrackFix, false)
LUAU_FASTFLAGVARIABLE(LuauGcSweepCostFix, false)
#define GC_SWEEPPAGESTEPCOST (FFlag::LuauGcSweepCostFix ? 16 : 4)
#define GC_INTERRUPT(state) \
{ \
@ -64,7 +65,7 @@ static void recordGcStateStep(global_State* g, int startgcstate, double seconds,
case GCSpropagate:
case GCSpropagateagain:
g->gcmetrics.currcycle.marktime += seconds;
g->gcmetrics.currcycle.markrequests += g->gcstepsize;
g->gcmetrics.currcycle.markwork += work;
if (assist)
g->gcmetrics.currcycle.markassisttime += seconds;
@ -74,7 +75,7 @@ static void recordGcStateStep(global_State* g, int startgcstate, double seconds,
break;
case GCSsweep:
g->gcmetrics.currcycle.sweeptime += seconds;
g->gcmetrics.currcycle.sweeprequests += g->gcstepsize;
g->gcmetrics.currcycle.sweepwork += work;
if (assist)
g->gcmetrics.currcycle.sweepassisttime += seconds;
@ -87,13 +88,11 @@ static void recordGcStateStep(global_State* g, int startgcstate, double seconds,
{
g->gcmetrics.stepassisttimeacc += seconds;
g->gcmetrics.currcycle.assistwork += work;
g->gcmetrics.currcycle.assistrequests += g->gcstepsize;
}
else
{
g->gcmetrics.stepexplicittimeacc += seconds;
g->gcmetrics.currcycle.explicitwork += work;
g->gcmetrics.currcycle.explicitrequests += g->gcstepsize;
}
}
@ -878,11 +877,11 @@ static size_t getheaptrigger(global_State* g, size_t heapgoal)
return heaptrigger < int64_t(g->totalbytes) ? g->totalbytes : (heaptrigger > int64_t(heapgoal) ? heapgoal : size_t(heaptrigger));
}
void luaC_step(lua_State* L, bool assist)
size_t luaC_step(lua_State* L, bool assist)
{
global_State* g = L->global;
int lim = (g->gcstepsize / 100) * g->gcstepmul; /* how much to work */
int lim = FFlag::LuauGcWorkTrackFix ? g->gcstepsize * g->gcstepmul / 100 : (g->gcstepsize / 100) * g->gcstepmul; /* how much to work */
LUAU_ASSERT(g->totalbytes >= g->GCthreshold);
size_t debt = g->totalbytes - g->GCthreshold;
@ -902,12 +901,13 @@ void luaC_step(lua_State* L, bool assist)
int lastgcstate = g->gcstate;
size_t work = gcstep(L, lim);
(void)work;
#ifdef LUAI_GCMETRICS
recordGcStateStep(g, lastgcstate, lua_clock() - lasttimestamp, assist, work);
#endif
size_t actualstepsize = work * 100 / g->gcstepmul;
// at the end of the last cycle
if (g->gcstate == GCSpause)
{
@ -927,14 +927,16 @@ void luaC_step(lua_State* L, bool assist)
}
else
{
g->GCthreshold = g->totalbytes + g->gcstepsize;
g->GCthreshold = g->totalbytes + (FFlag::LuauGcWorkTrackFix ? actualstepsize : g->gcstepsize);
// compensate if GC is "behind schedule" (has some debt to pay)
if (g->GCthreshold > debt)
if (FFlag::LuauGcWorkTrackFix ? g->GCthreshold >= debt : g->GCthreshold > debt)
g->GCthreshold -= debt;
}
GC_INTERRUPT(lastgcstate);
return actualstepsize;
}
void luaC_fullgc(lua_State* L)

2
VM/src/lgc.h
View file

@ -133,7 +133,7 @@
#define luaC_init(L, o, tt) luaC_initobj(L, cast_to(GCObject*, (o)), tt)
LUAI_FUNC void luaC_freeall(lua_State* L);
LUAI_FUNC void luaC_step(lua_State* L, bool assist);
LUAI_FUNC size_t luaC_step(lua_State* L, bool assist);
LUAI_FUNC void luaC_fullgc(lua_State* L);
LUAI_FUNC void luaC_initobj(lua_State* L, GCObject* o, uint8_t tt);
LUAI_FUNC void luaC_initupval(lua_State* L, UpVal* uv);

7
VM/src/lstate.h
View file

@ -106,7 +106,7 @@ struct GCCycleMetrics
double markassisttime = 0.0;
double markmaxexplicittime = 0.0;
size_t markexplicitsteps = 0;
size_t markrequests = 0;
size_t markwork = 0;
double atomicstarttimestamp = 0.0;
size_t atomicstarttotalsizebytes = 0;
@ -122,10 +122,7 @@ struct GCCycleMetrics
double sweepassisttime = 0.0;
double sweepmaxexplicittime = 0.0;
size_t sweepexplicitsteps = 0;
size_t sweeprequests = 0;
size_t assistrequests = 0;
size_t explicitrequests = 0;
size_t sweepwork = 0;
size_t assistwork = 0;
size_t explicitwork = 0;

7
bench/bench.py
View file

@ -814,10 +814,9 @@ def run(args, argsubcb):
analyzeResult('', mainResult, compareResults)
else:
for subdir, dirs, files in os.walk(arguments.folder):
for filename in files:
filepath = subdir + os.sep + filename
all_files = [subdir + os.sep + filename for subdir, dirs, files in os.walk(arguments.folder) for filename in files]
for filepath in sorted(all_files):
subdir, filename = os.path.split(filepath)
if filename.endswith(".lua"):
if arguments.run_test == None or re.match(arguments.run_test, filename[:-4]):
runTest(subdir, filename, filepath)

13
fuzz/proto.cpp
View file

@ -103,7 +103,7 @@ int registerTypes(Luau::TypeChecker& env)
// Vector3 stub
TypeId vector3MetaType = arena.addType(TableTypeVar{});
TypeId vector3InstanceType = arena.addType(ClassTypeVar{"Vector3", {}, nullopt, vector3MetaType, {}, {}});
TypeId vector3InstanceType = arena.addType(ClassTypeVar{"Vector3", {}, nullopt, vector3MetaType, {}, {}, "Test"});
getMutable<ClassTypeVar>(vector3InstanceType)->props = {
{"X", {env.numberType}},
{"Y", {env.numberType}},
@ -117,7 +117,7 @@ int registerTypes(Luau::TypeChecker& env)
env.globalScope->exportedTypeBindings["Vector3"] = TypeFun{{}, vector3InstanceType};
// Instance stub
TypeId instanceType = arena.addType(ClassTypeVar{"Instance", {}, nullopt, nullopt, {}, {}});
TypeId instanceType = arena.addType(ClassTypeVar{"Instance", {}, nullopt, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(instanceType)->props = {
{"Name", {env.stringType}},
};
@ -125,7 +125,7 @@ int registerTypes(Luau::TypeChecker& env)
env.globalScope->exportedTypeBindings["Instance"] = TypeFun{{}, instanceType};
// Part stub
TypeId partType = arena.addType(ClassTypeVar{"Part", {}, instanceType, nullopt, {}, {}});
TypeId partType = arena.addType(ClassTypeVar{"Part", {}, instanceType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(partType)->props = {
{"Position", {vector3InstanceType}},
};
@ -173,7 +173,7 @@ struct FuzzConfigResolver : Luau::ConfigResolver
{
FuzzConfigResolver()
{
defaultConfig.mode = Luau::Mode::Nonstrict; // typecheckTwice option will cover Strict mode
defaultConfig.mode = Luau::Mode::Nonstrict;
defaultConfig.enabledLint.warningMask = ~0ull;
defaultConfig.parseOptions.captureComments = true;
}
@ -275,6 +275,11 @@ DEFINE_PROTO_FUZZER(const luau::ModuleSet& message)
// lint (note that we need access to types so we need to do this with typeck in scope)
if (kFuzzLinter && result.errors.empty())
frontend.lint(name, std::nullopt);
// Second pass in strict mode (forced by auto-complete)
Luau::FrontendOptions opts;
opts.forAutocomplete = true;
frontend.check(name, opts);
}
catch (std::exception&)
{

36
tests/Autocomplete.test.cpp
View file

@ -3034,4 +3034,40 @@ string:@1
CHECK(ac.entryMap["sub"].wrongIndexType == true);
}
TEST_CASE_FIXTURE(ACFixture, "source_module_preservation_and_invalidation")
{
check(R"(
local a = { x = 2, y = 4 }
a.@1
)");
frontend.clear();
auto ac = autocomplete('1');
CHECK(ac.entryMap.count("x"));
CHECK(ac.entryMap.count("y"));
frontend.check("MainModule", {});
ac = autocomplete('1');
CHECK(ac.entryMap.count("x"));
CHECK(ac.entryMap.count("y"));
frontend.markDirty("MainModule", nullptr);
ac = autocomplete('1');
CHECK(ac.entryMap.count("x"));
CHECK(ac.entryMap.count("y"));
frontend.check("MainModule", {});
ac = autocomplete('1');
CHECK(ac.entryMap.count("x"));
CHECK(ac.entryMap.count("y"));
}
TEST_SUITE_END();

359
tests/Compiler.test.cpp
View file

@ -17,11 +17,13 @@ std::string rep(const std::string& s, size_t n);
using namespace Luau;
static std::string compileFunction(const char* source, uint32_t id)
static std::string compileFunction(const char* source, uint32_t id, int optimizationLevel = 1)
{
Luau::BytecodeBuilder bcb;
bcb.setDumpFlags(Luau::BytecodeBuilder::Dump_Code);
Luau::compileOrThrow(bcb, source);
Luau::CompileOptions options;
options.optimizationLevel = optimizationLevel;
Luau::compileOrThrow(bcb, source, options);
return bcb.dumpFunction(id);
}
@ -2689,6 +2691,27 @@ local 8: reg 3, start pc 34 line 21, end pc 34 line 21
)");
}
TEST_CASE("DebugRemarks")
{
Luau::BytecodeBuilder bcb;
bcb.setDumpFlags(Luau::BytecodeBuilder::Dump_Code | Luau::BytecodeBuilder::Dump_Remarks);
uint32_t fid = bcb.beginFunction(0);
bcb.addDebugRemark("test remark #%d", 42);
bcb.emitABC(LOP_RETURN, 0, 1, 0);
bcb.endFunction(0, 0);
bcb.setMainFunction(fid);
bcb.finalize();
CHECK_EQ("\n" + bcb.dumpFunction(0), R"(
REMARK test remark #42
RETURN R0 0
)");
}
TEST_CASE("AssignmentConflict")
{
// assignments are left to right
@ -4076,4 +4099,336 @@ RETURN R1 6
)");
}
TEST_CASE("LoopUnrollBasic")
{
// forward loops
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=1,2 do
t[i] = i
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 2
LOADN R1 1
SETTABLEN R1 R0 1
LOADN R1 2
SETTABLEN R1 R0 2
RETURN R0 1
)");
// backward loops
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=2,1,-1 do
t[i] = i
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 0
LOADN R1 2
SETTABLEN R1 R0 2
LOADN R1 1
SETTABLEN R1 R0 1
RETURN R0 1
)");
// loops with step that doesn't divide to-from
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=1,4,2 do
t[i] = i
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 0
LOADN R1 1
SETTABLEN R1 R0 1
LOADN R1 3
SETTABLEN R1 R0 3
RETURN R0 1
)");
}
TEST_CASE("LoopUnrollUnsupported")
{
// can't unroll loops with non-constant bounds
CHECK_EQ("\n" + compileFunction(R"(
for i=x,y,z do
end
)",
0, 2),
R"(
GETIMPORT R2 1
GETIMPORT R0 3
GETIMPORT R1 5
FORNPREP R0 +1
FORNLOOP R0 -1
RETURN R0 0
)");
// can't unroll loops with bounds where we can't compute trip count
CHECK_EQ("\n" + compileFunction(R"(
for i=2,1 do
end
)",
0, 2),
R"(
LOADN R2 2
LOADN R0 1
LOADN R1 1
FORNPREP R0 +1
FORNLOOP R0 -1
RETURN R0 0
)");
// can't unroll loops with bounds that might be imprecise (non-integer)
CHECK_EQ("\n" + compileFunction(R"(
for i=1,2,0.1 do
end
)",
0, 2),
R"(
LOADN R2 1
LOADN R0 2
LOADK R1 K0
FORNPREP R0 +1
FORNLOOP R0 -1
RETURN R0 0
)");
// can't unroll loops if the bounds are too large, as it might overflow trip count math
CHECK_EQ("\n" + compileFunction(R"(
for i=4294967295,4294967296 do
end
)",
0, 2),
R"(
LOADK R2 K0
LOADK R0 K1
LOADN R1 1
FORNPREP R0 +1
FORNLOOP R0 -1
RETURN R0 0
)");
// can't unroll loops if the body has loop control flow or nested loops
CHECK_EQ("\n" + compileFunction(R"(
for i=1,1 do
for j=1,1 do
if i == 1 then
continue
else
break
end
end
end
)",
0, 2),
R"(
LOADN R2 1
LOADN R0 1
LOADN R1 1
FORNPREP R0 +11
LOADN R5 1
LOADN R3 1
LOADN R4 1
FORNPREP R3 +6
JUMPIFNOTEQK R2 K0 +5
JUMP +2
JUMP +1
JUMP +1
FORNLOOP R3 -6
FORNLOOP R0 -11
RETURN R0 0
)");
// can't unroll loops if the body has functions that refer to loop variables
CHECK_EQ("\n" + compileFunction(R"(
for i=1,1 do
local x = function() return i end
end
)",
1, 2),
R"(
LOADN R2 1
LOADN R0 1
LOADN R1 1
FORNPREP R0 +3
NEWCLOSURE R3 P0
CAPTURE VAL R2
FORNLOOP R0 -3
RETURN R0 0
)");
}
TEST_CASE("LoopUnrollCost")
{
ScopedFastInt sfis[] = {
{"LuauCompileLoopUnrollThreshold", 25},
{"LuauCompileLoopUnrollThresholdMaxBoost", 300},
};
// loops with short body
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=1,10 do
t[i] = i
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 10
LOADN R1 1
SETTABLEN R1 R0 1
LOADN R1 2
SETTABLEN R1 R0 2
LOADN R1 3
SETTABLEN R1 R0 3
LOADN R1 4
SETTABLEN R1 R0 4
LOADN R1 5
SETTABLEN R1 R0 5
LOADN R1 6
SETTABLEN R1 R0 6
LOADN R1 7
SETTABLEN R1 R0 7
LOADN R1 8
SETTABLEN R1 R0 8
LOADN R1 9
SETTABLEN R1 R0 9
LOADN R1 10
SETTABLEN R1 R0 10
RETURN R0 1
)");
// loops with body that's too long
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=1,100 do
t[i] = i
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 0
LOADN R3 1
LOADN R1 100
LOADN R2 1
FORNPREP R1 +2
SETTABLE R3 R0 R3
FORNLOOP R1 -2
RETURN R0 1
)");
// loops with body that's long but has a high boost factor due to constant folding
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=1,30 do
t[i] = i * i * i
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 0
LOADN R1 1
SETTABLEN R1 R0 1
LOADN R1 8
SETTABLEN R1 R0 2
LOADN R1 27
SETTABLEN R1 R0 3
LOADN R1 64
SETTABLEN R1 R0 4
LOADN R1 125
SETTABLEN R1 R0 5
LOADN R1 216
SETTABLEN R1 R0 6
LOADN R1 343
SETTABLEN R1 R0 7
LOADN R1 512
SETTABLEN R1 R0 8
LOADN R1 729
SETTABLEN R1 R0 9
LOADN R1 1000
SETTABLEN R1 R0 10
LOADN R1 1331
SETTABLEN R1 R0 11
LOADN R1 1728
SETTABLEN R1 R0 12
LOADN R1 2197
SETTABLEN R1 R0 13
LOADN R1 2744
SETTABLEN R1 R0 14
LOADN R1 3375
SETTABLEN R1 R0 15
LOADN R1 4096
SETTABLEN R1 R0 16
LOADN R1 4913
SETTABLEN R1 R0 17
LOADN R1 5832
SETTABLEN R1 R0 18
LOADN R1 6859
SETTABLEN R1 R0 19
LOADN R1 8000
SETTABLEN R1 R0 20
LOADN R1 9261
SETTABLEN R1 R0 21
LOADN R1 10648
SETTABLEN R1 R0 22
LOADN R1 12167
SETTABLEN R1 R0 23
LOADN R1 13824
SETTABLEN R1 R0 24
LOADN R1 15625
SETTABLEN R1 R0 25
LOADN R1 17576
SETTABLEN R1 R0 26
LOADN R1 19683
SETTABLEN R1 R0 27
LOADN R1 21952
SETTABLEN R1 R0 28
LOADN R1 24389
SETTABLEN R1 R0 29
LOADN R1 27000
SETTABLEN R1 R0 30
RETURN R0 1
)");
// loops with body that's long and doesn't have a high boost factor
CHECK_EQ("\n" + compileFunction(R"(
local t = {}
for i=1,10 do
t[i] = math.abs(math.sin(i))
end
return t
)",
0, 2),
R"(
NEWTABLE R0 0 10
LOADN R3 1
LOADN R1 10
LOADN R2 1
FORNPREP R1 +11
FASTCALL1 24 R3 +3
MOVE R6 R3
GETIMPORT R5 2
CALL R5 1 -1
FASTCALL 2 +2
GETIMPORT R4 4
CALL R4 -1 1
SETTABLE R4 R0 R3
FORNLOOP R1 -11
RETURN R0 1
)");
}
TEST_SUITE_END();

125
tests/CostModel.test.cpp
View file

@ -98,4 +98,129 @@ end
CHECK_EQ(2, Luau::Compile::computeCost(model, args2, 1));
}
TEST_CASE("ImportCall")
{
uint64_t model = modelFunction(R"(
function test(a)
return Instance.new(a)
end
)");
const bool args1[] = {false};
const bool args2[] = {true};
CHECK_EQ(6, Luau::Compile::computeCost(model, args1, 1));
CHECK_EQ(6, Luau::Compile::computeCost(model, args2, 1));
}
TEST_CASE("FastCall")
{
uint64_t model = modelFunction(R"(
function test(a)
return math.abs(a + 1)
end
)");
const bool args1[] = {false};
const bool args2[] = {true};
// note: we currently don't treat fast calls differently from cost model perspective
CHECK_EQ(6, Luau::Compile::computeCost(model, args1, 1));
CHECK_EQ(5, Luau::Compile::computeCost(model, args2, 1));
}
TEST_CASE("ControlFlow")
{
uint64_t model = modelFunction(R"(
function test(a)
while a < 0 do
a += 1
end
for i=1,2 do
a += 1
end
for i in pairs({}) do
a += 1
if a % 2 == 0 then continue end
end
repeat
a += 1
if a % 2 == 0 then break end
until a > 10
return a
end
)");
const bool args1[] = {false};
const bool args2[] = {true};
CHECK_EQ(38, Luau::Compile::computeCost(model, args1, 1));
CHECK_EQ(37, Luau::Compile::computeCost(model, args2, 1));
}
TEST_CASE("Conditional")
{
uint64_t model = modelFunction(R"(
function test(a)
return if a < 0 then -a else a
end
)");
const bool args1[] = {false};
const bool args2[] = {true};
CHECK_EQ(4, Luau::Compile::computeCost(model, args1, 1));
CHECK_EQ(2, Luau::Compile::computeCost(model, args2, 1));
}
TEST_CASE("VarArgs")
{
uint64_t model = modelFunction(R"(
function test(...)
return select('#', ...) :: number
end
)");
CHECK_EQ(8, Luau::Compile::computeCost(model, nullptr, 0));
}
TEST_CASE("TablesFunctions")
{
uint64_t model = modelFunction(R"(
function test()
return { 42, op = function() end }
end
)");
CHECK_EQ(22, Luau::Compile::computeCost(model, nullptr, 0));
}
TEST_CASE("CostOverflow")
{
uint64_t model = modelFunction(R"(
function test()
return {{{{{{{{{{{{{{{}}}}}}}}}}}}}}}
end
)");
CHECK_EQ(127, Luau::Compile::computeCost(model, nullptr, 0));
}
TEST_CASE("TableAssign")
{
uint64_t model = modelFunction(R"(
function test(a)
for i=1,#a do
a[i] = i
end
end
)");
const bool args1[] = {false};
const bool args2[] = {true};
CHECK_EQ(4, Luau::Compile::computeCost(model, args1, 1));
CHECK_EQ(3, Luau::Compile::computeCost(model, args2, 1));
}
TEST_SUITE_END();

332
tests/JsonEncoder.test.cpp
View file

@ -9,6 +9,46 @@
using namespace Luau;
struct JsonEncoderFixture
{
Allocator allocator;
AstNameTable names{allocator};
ParseResult parse(std::string_view src)
{
ParseOptions opts;
opts.allowDeclarationSyntax = true;
return Parser::parse(src.data(), src.size(), names, allocator, opts);
}
AstStatBlock* expectParse(std::string_view src)
{
ParseResult res = parse(src);
REQUIRE(res.errors.size() == 0);
return res.root;
}
AstStat* expectParseStatement(std::string_view src)
{
AstStatBlock* root = expectParse(src);
REQUIRE(1 == root->body.size);
return root->body.data[0];
}
AstExpr* expectParseExpr(std::string_view src)
{
std::string s = "a = ";
s.append(src);
AstStatBlock* root = expectParse(s);
AstStatAssign* statAssign = root->body.data[0]->as<AstStatAssign>();
REQUIRE(statAssign != nullptr);
REQUIRE(statAssign->values.size == 1);
return statAssign->values.data[0];
}
};
TEST_SUITE_BEGIN("JsonEncoderTests");
TEST_CASE("encode_constants")
@ -51,7 +91,7 @@ TEST_CASE("encode_AstStatBlock")
toJson(&block));
}
TEST_CASE("encode_tables")
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_tables")
{
std::string src = R"(
local x: {
@ -61,16 +101,294 @@ TEST_CASE("encode_tables")
}
)";
Allocator allocator;
AstNameTable names(allocator);
ParseResult parseResult = Parser::parse(src.c_str(), src.length(), names, allocator);
REQUIRE(parseResult.errors.size() == 0);
std::string json = toJson(parseResult.root);
AstStatBlock* root = expectParse(src);
std::string json = toJson(root);
CHECK(
json ==
R"({"type":"AstStatBlock","location":"0,0 - 6,4","body":[{"type":"AstStatLocal","location":"1,8 - 5,9","vars":[{"type":{"type":"AstTypeTable","location":"1,17 - 3,9","props":[{"name":"foo","location":"2,12 - 2,15","type":{"type":"AstTypeReference","location":"2,17 - 2,23","name":"number","parameters":[]}}],"indexer":false},"name":"x","location":"1,14 - 1,15"}],"values":[{"type":"AstExprTable","location":"3,12 - 5,9","items":[{"kind":"record","key":{"type":"AstExprConstantString","location":"4,12 - 4,15","value":"foo"},"value":{"type":"AstExprConstantNumber","location":"4,18 - 4,21","value":123}}]}]}]})");
}
TEST_CASE("encode_AstExprGroup")
{
AstExprConstantNumber number{Location{}, 5.0};
AstExprGroup group{Location{}, &number};
std::string json = toJson(&group);
const std::string expected = R"({"type":"AstExprGroup","location":"0,0 - 0,0","expr":{"type":"AstExprConstantNumber","location":"0,0 - 0,0","value":5}})";
CHECK(json == expected);
}
TEST_CASE("encode_AstExprGlobal")
{
AstExprGlobal global{Location{}, AstName{"print"}};
std::string json = toJson(&global);
std::string expected = R"({"type":"AstExprGlobal","location":"0,0 - 0,0","global":"print"})";
CHECK(json == expected);
}
TEST_CASE("encode_AstExprLocal")
{
AstLocal local{AstName{"foo"}, Location{}, nullptr, 0, 0, nullptr};
AstExprLocal exprLocal{Location{}, &local, false};
CHECK(toJson(&exprLocal) == R"({"type":"AstExprLocal","location":"0,0 - 0,0","local":{"type":null,"name":"foo","location":"0,0 - 0,0"}})");
}
TEST_CASE("encode_AstExprVarargs")
{
AstExprVarargs varargs{Location{}};
CHECK(toJson(&varargs) == R"({"type":"AstExprVarargs","location":"0,0 - 0,0"})");
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprCall")
{
AstExpr* expr = expectParseExpr("foo(1, 2, 3)");
std::string_view expected = R"({"type":"AstExprCall","location":"0,4 - 0,16","func":{"type":"AstExprGlobal","location":"0,4 - 0,7","global":"foo"},"args":[{"type":"AstExprConstantNumber","location":"0,8 - 0,9","value":1},{"type":"AstExprConstantNumber","location":"0,11 - 0,12","value":2},{"type":"AstExprConstantNumber","location":"0,14 - 0,15","value":3}],"self":false,"argLocation":"0,8 - 0,16"})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprIndexName")
{
AstExpr* expr = expectParseExpr("foo.bar");
std::string_view expected = R"({"type":"AstExprIndexName","location":"0,4 - 0,11","expr":{"type":"AstExprGlobal","location":"0,4 - 0,7","global":"foo"},"index":"bar","indexLocation":"0,8 - 0,11","op":"."})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprIndexExpr")
{
AstExpr* expr = expectParseExpr("foo['bar']");
std::string_view expected = R"({"type":"AstExprIndexExpr","location":"0,4 - 0,14","expr":{"type":"AstExprGlobal","location":"0,4 - 0,7","global":"foo"},"index":{"type":"AstExprConstantString","location":"0,8 - 0,13","value":"bar"}})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprFunction")
{
AstExpr* expr = expectParseExpr("function (a) return a end");
std::string_view expected = R"({"type":"AstExprFunction","location":"0,4 - 0,29","generics":[],"genericPacks":[],"args":[{"type":null,"name":"a","location":"0,14 - 0,15"}],"vararg":false,"varargLocation":"0,0 - 0,0","body":{"type":"AstStatBlock","location":"0,16 - 0,26","body":[{"type":"AstStatReturn","location":"0,17 - 0,25","list":[{"type":"AstExprLocal","location":"0,24 - 0,25","local":{"type":null,"name":"a","location":"0,14 - 0,15"}}]}]},"functionDepth":1,"debugname":"","hasEnd":true})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprTable")
{
AstExpr* expr = expectParseExpr("{true, key=true, [key2]=true}");
std::string_view expected = R"({"type":"AstExprTable","location":"0,4 - 0,33","items":[{"kind":"item","value":{"type":"AstExprConstantBool","location":"0,5 - 0,9","value":true}},{"kind":"record","key":{"type":"AstExprConstantString","location":"0,11 - 0,14","value":"key"},"value":{"type":"AstExprConstantBool","location":"0,15 - 0,19","value":true}},{"kind":"general","key":{"type":"AstExprGlobal","location":"0,22 - 0,26","global":"key2"},"value":{"type":"AstExprConstantBool","location":"0,28 - 0,32","value":true}}]})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprUnary")
{
AstExpr* expr = expectParseExpr("-b");
std::string_view expected = R"({"type":"AstExprUnary","location":"0,4 - 0,6","op":"minus","expr":{"type":"AstExprGlobal","location":"0,5 - 0,6","global":"b"}})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprBinary")
{
AstExpr* expr = expectParseExpr("b + c");
std::string_view expected = R"({"type":"AstExprBinary","location":"0,4 - 0,9","op":"Add","left":{"type":"AstExprGlobal","location":"0,4 - 0,5","global":"b"},"right":{"type":"AstExprGlobal","location":"0,8 - 0,9","global":"c"}})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprTypeAssertion")
{
AstExpr* expr = expectParseExpr("b :: any");
std::string_view expected = R"({"type":"AstExprTypeAssertion","location":"0,4 - 0,12","expr":{"type":"AstExprGlobal","location":"0,4 - 0,5","global":"b"},"annotation":{"type":"AstTypeReference","location":"0,9 - 0,12","name":"any","parameters":[]}})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstExprError")
{
std::string_view src = "a = ";
ParseResult parseResult = Parser::parse(src.data(), src.size(), names, allocator);
REQUIRE(1 == parseResult.root->body.size);
AstStatAssign* statAssign = parseResult.root->body.data[0]->as<AstStatAssign>();
REQUIRE(statAssign != nullptr);
REQUIRE(1 == statAssign->values.size);
AstExpr* expr = statAssign->values.data[0];
std::string_view expected = R"({"type":"AstExprError","location":"0,4 - 0,4","expressions":[],"messageIndex":0})";
CHECK(toJson(expr) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatIf")
{
AstStat* statement = expectParseStatement("if true then else end");
std::string_view expected = R"({"type":"AstStatIf","location":"0,0 - 0,21","condition":{"type":"AstExprConstantBool","location":"0,3 - 0,7","value":true},"thenbody":{"type":"AstStatBlock","location":"0,12 - 0,13","body":[]},"elsebody":{"type":"AstStatBlock","location":"0,17 - 0,18","body":[]},"hasThen":true,"hasEnd":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatWhile")
{
AstStat* statement = expectParseStatement("while true do end");
std::string_view expected = R"({"type":"AtStatWhile","location":"0,0 - 0,17","condition":{"type":"AstExprConstantBool","location":"0,6 - 0,10","value":true},"body":{"type":"AstStatBlock","location":"0,13 - 0,14","body":[]},"hasDo":true,"hasEnd":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatRepeat")
{
AstStat* statement = expectParseStatement("repeat until true");
std::string_view expected = R"({"type":"AstStatRepeat","location":"0,0 - 0,17","condition":{"type":"AstExprConstantBool","location":"0,13 - 0,17","value":true},"body":{"type":"AstStatBlock","location":"0,6 - 0,7","body":[]},"hasUntil":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatBreak")
{
AstStat* statement = expectParseStatement("while true do break end");
std::string_view expected = R"({"type":"AtStatWhile","location":"0,0 - 0,23","condition":{"type":"AstExprConstantBool","location":"0,6 - 0,10","value":true},"body":{"type":"AstStatBlock","location":"0,13 - 0,20","body":[{"type":"AstStatBreak","location":"0,14 - 0,19"}]},"hasDo":true,"hasEnd":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatContinue")
{
AstStat* statement = expectParseStatement("while true do continue end");
std::string_view expected = R"({"type":"AtStatWhile","location":"0,0 - 0,26","condition":{"type":"AstExprConstantBool","location":"0,6 - 0,10","value":true},"body":{"type":"AstStatBlock","location":"0,13 - 0,23","body":[{"type":"AstStatContinue","location":"0,14 - 0,22"}]},"hasDo":true,"hasEnd":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatFor")
{
AstStat* statement = expectParseStatement("for a=0,1 do end");
std::string_view expected = R"({"type":"AstStatFor","location":"0,0 - 0,16","var":{"type":null,"name":"a","location":"0,4 - 0,5"},"from":{"type":"AstExprConstantNumber","location":"0,6 - 0,7","value":0},"to":{"type":"AstExprConstantNumber","location":"0,8 - 0,9","value":1},"body":{"type":"AstStatBlock","location":"0,12 - 0,13","body":[]},"hasDo":true,"hasEnd":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatForIn")
{
AstStat* statement = expectParseStatement("for a in b do end");
std::string_view expected = R"({"type":"AstStatForIn","location":"0,0 - 0,17","vars":[{"type":null,"name":"a","location":"0,4 - 0,5"}],"values":[{"type":"AstExprGlobal","location":"0,9 - 0,10","global":"b"}],"body":{"type":"AstStatBlock","location":"0,13 - 0,14","body":[]},"hasIn":true,"hasDo":true,"hasEnd":true})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatCompoundAssign")
{
AstStat* statement = expectParseStatement("a += b");
std::string_view expected = R"({"type":"AstStatCompoundAssign","location":"0,0 - 0,6","op":"Add","var":{"type":"AstExprGlobal","location":"0,0 - 0,1","global":"a"},"value":{"type":"AstExprGlobal","location":"0,5 - 0,6","global":"b"}})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatLocalFunction")
{
AstStat* statement = expectParseStatement("local function a(b) return end");
std::string_view expected = R"({"type":"AstStatLocalFunction","location":"0,0 - 0,30","name":{"type":null,"name":"a","location":"0,15 - 0,16"},"func":{"type":"AstExprFunction","location":"0,0 - 0,30","generics":[],"genericPacks":[],"args":[{"type":null,"name":"b","location":"0,17 - 0,18"}],"vararg":false,"varargLocation":"0,0 - 0,0","body":{"type":"AstStatBlock","location":"0,19 - 0,27","body":[{"type":"AstStatReturn","location":"0,20 - 0,26","list":[]}]},"functionDepth":1,"debugname":"a","hasEnd":true}})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatTypeAlias")
{
AstStat* statement = expectParseStatement("type A = B");
std::string_view expected = R"({"type":"AstStatTypeAlias","location":"0,0 - 0,10","name":"A","generics":[],"genericPacks":[],"type":{"type":"AstTypeReference","location":"0,9 - 0,10","name":"B","parameters":[]},"exported":false})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatDeclareFunction")
{
AstStat* statement = expectParseStatement("declare function foo(x: number): string");
std::string_view expected = R"({"type":"AstStatDeclareFunction","location":"0,0 - 0,39","name":"foo","params":{"types":[{"type":"AstTypeReference","location":"0,24 - 0,30","name":"number","parameters":[]}]},"retTypes":{"types":[{"type":"AstTypeReference","location":"0,33 - 0,39","name":"string","parameters":[]}]},"generics":[],"genericPacks":[]})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstStatDeclareClass")
{
AstStatBlock* root = expectParse(R"(
declare class Foo
prop: number
function method(self, foo: number): string
end
declare class Bar extends Foo
prop2: string
end
)");
REQUIRE(2 == root->body.size);
std::string_view expected1 = R"({"type":"AstStatDeclareClass","location":"1,22 - 4,11","name":"Foo","props":[{"name":"prop","type":{"type":"AstTypeReference","location":"2,18 - 2,24","name":"number","parameters":[]}},{"name":"method","type":{"type":"AstTypeFunction","location":"3,21 - 4,11","generics":[],"genericPacks":[],"argTypes":{"types":[{"type":"AstTypeReference","location":"3,39 - 3,45","name":"number","parameters":[]}]},"returnTypes":{"types":[{"type":"AstTypeReference","location":"3,48 - 3,54","name":"string","parameters":[]}]}}}]})";
CHECK(toJson(root->body.data[0]) == expected1);
std::string_view expected2 = R"({"type":"AstStatDeclareClass","location":"6,22 - 8,11","name":"Bar","superName":"Foo","props":[{"name":"prop2","type":{"type":"AstTypeReference","location":"7,19 - 7,25","name":"string","parameters":[]}}]})";
CHECK(toJson(root->body.data[1]) == expected2);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_annotation")
{
AstStat* statement = expectParseStatement("type T = ((number) -> (string | nil)) & ((string) -> ())");
std::string_view expected = R"({"type":"AstStatTypeAlias","location":"0,0 - 0,55","name":"T","generics":[],"genericPacks":[],"type":{"type":"AstTypeIntersection","location":"0,9 - 0,55","types":[{"type":"AstTypeFunction","location":"0,10 - 0,35","generics":[],"genericPacks":[],"argTypes":{"types":[{"type":"AstTypeReference","location":"0,11 - 0,17","name":"number","parameters":[]}]},"returnTypes":{"types":[{"type":"AstTypeUnion","location":"0,23 - 0,35","types":[{"type":"AstTypeReference","location":"0,23 - 0,29","name":"string","parameters":[]},{"type":"AstTypeReference","location":"0,32 - 0,35","name":"nil","parameters":[]}]}]}},{"type":"AstTypeFunction","location":"0,41 - 0,55","generics":[],"genericPacks":[],"argTypes":{"types":[{"type":"AstTypeReference","location":"0,42 - 0,48","name":"string","parameters":[]}]},"returnTypes":{"types":[]}}]},"exported":false})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstTypeError")
{
ParseResult parseResult = parse("type T = ");
REQUIRE(1 == parseResult.root->body.size);
AstStat* statement = parseResult.root->body.data[0];
std::string_view expected = R"({"type":"AstStatTypeAlias","location":"0,0 - 0,9","name":"T","generics":[],"genericPacks":[],"type":{"type":"AstTypeError","location":"0,8 - 0,9","types":[],"messageIndex":0},"exported":false})";
CHECK(toJson(statement) == expected);
}
TEST_CASE_FIXTURE(JsonEncoderFixture, "encode_AstTypePackExplicit")
{
AstStatBlock* root = expectParse(R"(
type A<T...> = () -> T...
local a: A<(number, string)>
)");
CHECK(2 == root->body.size);
std::string_view expected = R"({"type":"AstStatLocal","location":"2,8 - 2,36","vars":[{"type":{"type":"AstTypeReference","location":"2,17 - 2,36","name":"A","parameters":[{"type":"AstTypePackExplicit","location":"2,19 - 2,20","typeList":{"types":[{"type":"AstTypeReference","location":"2,20 - 2,26","name":"number","parameters":[]},{"type":"AstTypeReference","location":"2,28 - 2,34","name":"string","parameters":[]}]}}]},"name":"a","location":"2,14 - 2,15"}],"values":[]})";
CHECK(toJson(root->body.data[1]) == expected);
}
TEST_SUITE_END();

2
tests/Linter.test.cpp
View file

@ -1436,7 +1436,7 @@ TEST_CASE_FIXTURE(Fixture, "LintHygieneUAF")
TEST_CASE_FIXTURE(Fixture, "DeprecatedApi")
{
unfreeze(typeChecker.globalTypes);
TypeId instanceType = typeChecker.globalTypes.addType(ClassTypeVar{"Instance", {}, std::nullopt, std::nullopt, {}, {}});
TypeId instanceType = typeChecker.globalTypes.addType(ClassTypeVar{"Instance", {}, std::nullopt, std::nullopt, {}, {}, "Test"});
persist(instanceType);
typeChecker.globalScope->exportedTypeBindings["Instance"] = TypeFun{{}, instanceType};

24
tests/Module.test.cpp
View file

@ -173,13 +173,13 @@ TEST_CASE_FIXTURE(Fixture, "clone_class")
{
{"__add", {typeChecker.anyType}},
},
std::nullopt, std::nullopt, {}, {}}};
std::nullopt, std::nullopt, {}, {}, "Test"}};
TypeVar exampleClass{ClassTypeVar{"ExampleClass",
{
{"PropOne", {typeChecker.numberType}},
{"PropTwo", {typeChecker.stringType}},
},
std::nullopt, &exampleMetaClass, {}, {}}};
std::nullopt, &exampleMetaClass, {}, {}, "Test"}};
TypeArena dest;
CloneState cloneState;
@ -196,9 +196,12 @@ TEST_CASE_FIXTURE(Fixture, "clone_class")
CHECK_EQ("ExampleClassMeta", metatable->name);
}
TEST_CASE_FIXTURE(Fixture, "clone_sanitize_free_types")
TEST_CASE_FIXTURE(Fixture, "clone_free_types")
{
ScopedFastFlag sff{"LuauErrorRecoveryType", true};
ScopedFastFlag sff[]{
{"LuauErrorRecoveryType", true},
{"LuauLosslessClone", true},
};
TypeVar freeTy(FreeTypeVar{TypeLevel{}});
TypePackVar freeTp(FreeTypePack{TypeLevel{}});
@ -207,17 +210,17 @@ TEST_CASE_FIXTURE(Fixture, "clone_sanitize_free_types")
CloneState cloneState;
TypeId clonedTy = clone(&freeTy, dest, cloneState);
CHECK_EQ("any", toString(clonedTy));
CHECK(cloneState.encounteredFreeType);
CHECK(get<FreeTypeVar>(clonedTy));
cloneState = {};
TypePackId clonedTp = clone(&freeTp, dest, cloneState);
CHECK_EQ("...any", toString(clonedTp));
CHECK(cloneState.encounteredFreeType);
CHECK(get<FreeTypePack>(clonedTp));
}
TEST_CASE_FIXTURE(Fixture, "clone_seal_free_tables")
TEST_CASE_FIXTURE(Fixture, "clone_free_tables")
{
ScopedFastFlag sff{"LuauLosslessClone", true};
TypeVar tableTy{TableTypeVar{}};
TableTypeVar* ttv = getMutable<TableTypeVar>(&tableTy);
ttv->state = TableState::Free;
@ -227,8 +230,7 @@ TEST_CASE_FIXTURE(Fixture, "clone_seal_free_tables")
TypeId cloned = clone(&tableTy, dest, cloneState);
const TableTypeVar* clonedTtv = get<TableTypeVar>(cloned);
CHECK_EQ(clonedTtv->state, TableState::Sealed);
CHECK(cloneState.encounteredFreeType);
CHECK_EQ(clonedTtv->state, TableState::Free);
}
TEST_CASE_FIXTURE(Fixture, "clone_constrained_intersection")

46
tests/NonstrictMode.test.cpp
View file

@ -13,6 +13,29 @@ using namespace Luau;
TEST_SUITE_BEGIN("NonstrictModeTests");
TEST_CASE_FIXTURE(Fixture, "function_returns_number_or_string")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true}
};
CheckResult result = check(R"(
--!nonstrict
local function f()
if math.random() > 0.5 then
return 5
else
return "hi"
end
end
)");
LUAU_REQUIRE_NO_ERRORS(result);
CHECK("() -> number | string" == toString(requireType("f")));
}
TEST_CASE_FIXTURE(Fixture, "infer_nullary_function")
{
CheckResult result = check(R"(
@ -35,8 +58,13 @@ TEST_CASE_FIXTURE(Fixture, "infer_nullary_function")
REQUIRE_EQ(0, rets.size());
}
TEST_CASE_FIXTURE(Fixture, "infer_the_maximum_number_of_values_the_function_could_return")
TEST_CASE_FIXTURE(Fixture, "first_return_type_dictates_number_of_return_types")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
};
CheckResult result = check(R"(
--!nonstrict
function getMinCardCountForWidth(width)
@ -51,22 +79,18 @@ TEST_CASE_FIXTURE(Fixture, "infer_the_maximum_number_of_values_the_function_coul
TypeId t = requireType("getMinCardCountForWidth");
REQUIRE(t);
REQUIRE_EQ("(any) -> (...any)", toString(t));
REQUIRE_EQ("(any) -> number", toString(t));
}
#if 0
// Maybe we want this?
TEST_CASE_FIXTURE(Fixture, "return_annotation_is_still_checked")
{
CheckResult result = check(R"(
--!nonstrict
function foo(x): number return 'hello' end
)");
LUAU_REQUIRE_ERROR_COUNT(1, result);
REQUIRE_NE(*typeChecker.anyType, *requireType("foo"));
}
#endif
TEST_CASE_FIXTURE(Fixture, "function_parameters_are_any")
{
@ -256,6 +280,12 @@ TEST_CASE_FIXTURE(Fixture, "delay_function_does_not_require_its_argument_to_retu
TEST_CASE_FIXTURE(Fixture, "inconsistent_module_return_types_are_ok")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
{"LuauSealExports", true},
};
CheckResult result = check(R"(
--!nonstrict
@ -272,7 +302,7 @@ TEST_CASE_FIXTURE(Fixture, "inconsistent_module_return_types_are_ok")
LUAU_REQUIRE_NO_ERRORS(result);
REQUIRE_EQ("any", toString(getMainModule()->getModuleScope()->returnType));
REQUIRE_EQ("((any) -> string) | {| foo: any |}", toString(getMainModule()->getModuleScope()->returnType));
}
TEST_CASE_FIXTURE(Fixture, "returning_insufficient_return_values")

44
tests/Normalize.test.cpp
View file

@ -21,7 +21,7 @@ void createSomeClasses(TypeChecker& typeChecker)
unfreeze(arena);
TypeId parentType = arena.addType(ClassTypeVar{"Parent", {}, std::nullopt, std::nullopt, {}, nullptr});
TypeId parentType = arena.addType(ClassTypeVar{"Parent", {}, std::nullopt, std::nullopt, {}, nullptr, "Test"});
ClassTypeVar* parentClass = getMutable<ClassTypeVar>(parentType);
parentClass->props["method"] = {makeFunction(arena, parentType, {}, {})};
@ -31,7 +31,7 @@ void createSomeClasses(TypeChecker& typeChecker)
addGlobalBinding(typeChecker, "Parent", {parentType});
typeChecker.globalScope->exportedTypeBindings["Parent"] = TypeFun{{}, parentType};
TypeId childType = arena.addType(ClassTypeVar{"Child", {}, parentType, std::nullopt, {}, nullptr});
TypeId childType = arena.addType(ClassTypeVar{"Child", {}, parentType, std::nullopt, {}, nullptr, "Test"});
ClassTypeVar* childClass = getMutable<ClassTypeVar>(childType);
childClass->props["virtual_method"] = {makeFunction(arena, childType, {}, {})};
@ -39,7 +39,7 @@ void createSomeClasses(TypeChecker& typeChecker)
addGlobalBinding(typeChecker, "Child", {childType});
typeChecker.globalScope->exportedTypeBindings["Child"] = TypeFun{{}, childType};
TypeId unrelatedType = arena.addType(ClassTypeVar{"Unrelated", {}, std::nullopt, std::nullopt, {}, nullptr});
TypeId unrelatedType = arena.addType(ClassTypeVar{"Unrelated", {}, std::nullopt, std::nullopt, {}, nullptr, "Test"});
addGlobalBinding(typeChecker, "Unrelated", {unrelatedType});
typeChecker.globalScope->exportedTypeBindings["Unrelated"] = TypeFun{{}, unrelatedType};
@ -400,7 +400,6 @@ TEST_CASE_FIXTURE(NormalizeFixture, "table_with_table_prop")
CHECK_EQ("{| x: {| y: number & string |} |}", toString(requireType("a")));
}
#if 0
TEST_CASE_FIXTURE(NormalizeFixture, "tables")
{
check(R"(
@ -428,6 +427,7 @@ TEST_CASE_FIXTURE(NormalizeFixture, "tables")
CHECK(!isSubtype(b, d));
}
#if 0
TEST_CASE_FIXTURE(NormalizeFixture, "table_indexers_are_invariant")
{
check(R"(
@ -619,6 +619,7 @@ TEST_CASE_FIXTURE(Fixture, "normalize_module_return_type")
{
ScopedFastFlag sff[] = {
{"LuauLowerBoundsCalculation", true},
{"LuauReturnTypeInferenceInNonstrict", true},
};
check(R"(
@ -639,7 +640,7 @@ TEST_CASE_FIXTURE(Fixture, "normalize_module_return_type")
end
)");
CHECK_EQ("(any, any) -> (...any)", toString(getMainModule()->getModuleScope()->returnType));
CHECK_EQ("(any, any) -> (any, any) -> any", toString(getMainModule()->getModuleScope()->returnType));
}
TEST_CASE_FIXTURE(Fixture, "return_type_is_not_a_constrained_intersection")
@ -950,6 +951,27 @@ TEST_CASE_FIXTURE(Fixture, "nested_table_normalization_with_non_table__no_ice")
LUAU_REQUIRE_NO_ERRORS(result);
}
TEST_CASE_FIXTURE(Fixture, "visiting_a_type_twice_is_not_considered_normal")
{
ScopedFastFlag sff{"LuauLowerBoundsCalculation", true};
CheckResult result = check(R"(
--!strict
function f(a, b)
local function g()
if math.random() > 0.5 then
return a()
else
return b
end
end
end
)");
LUAU_REQUIRE_NO_ERRORS(result);
CHECK_EQ("<a>(() -> a, a) -> ()", toString(requireType("f")));
}
TEST_CASE_FIXTURE(Fixture, "fuzz_failure_instersection_combine_must_follow")
{
ScopedFastFlag flags[] = {
@ -964,4 +986,16 @@ TEST_CASE_FIXTURE(Fixture, "fuzz_failure_instersection_combine_must_follow")
LUAU_REQUIRE_NO_ERRORS(result);
}
TEST_CASE_FIXTURE(Fixture, "fuzz_failure_bound_type_is_normal_but_not_its_bounded_to")
{
ScopedFastFlag sff{"LuauLowerBoundsCalculation", true};
CheckResult result = check(R"(
type t252 = ((t0<t252...>)|(any))|(any)
type t0 = t252<t0<any,t24...>,t24...>
)");
LUAU_REQUIRE_ERRORS(result);
}
TEST_SUITE_END();

4
tests/ToDot.test.cpp
View file

@ -21,13 +21,13 @@ struct ToDotClassFixture : Fixture
TypeId baseClassMetaType = arena.addType(TableTypeVar{});
TypeId baseClassInstanceType = arena.addType(ClassTypeVar{"BaseClass", {}, std::nullopt, baseClassMetaType, {}, {}});
TypeId baseClassInstanceType = arena.addType(ClassTypeVar{"BaseClass", {}, std::nullopt, baseClassMetaType, {}, {}, "Test"});
getMutable<ClassTypeVar>(baseClassInstanceType)->props = {
{"BaseField", {typeChecker.numberType}},
};
typeChecker.globalScope->exportedTypeBindings["BaseClass"] = TypeFun{{}, baseClassInstanceType};
TypeId childClassInstanceType = arena.addType(ClassTypeVar{"ChildClass", {}, baseClassInstanceType, std::nullopt, {}, {}});
TypeId childClassInstanceType = arena.addType(ClassTypeVar{"ChildClass", {}, baseClassInstanceType, std::nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(childClassInstanceType)->props = {
{"ChildField", {typeChecker.stringType}},
};

17
tests/Transpiler.test.cpp
View file

@ -661,4 +661,21 @@ type t4 = false
CHECK_EQ(code, transpile(code, {}, true).code);
}
TEST_CASE_FIXTURE(Fixture, "transpile_array_types")
{
std::string code = R"(
type t1 = {number}
type t2 = {[string]: number}
)";
CHECK_EQ(code, transpile(code, {}, true).code);
}
TEST_CASE_FIXTURE(Fixture, "transpile_for_in_multiple_types")
{
std::string code = "for k:string,v:boolean in next,{}do end";
CHECK_EQ(code, transpile(code, {}, true).code);
}
TEST_SUITE_END();

34
tests/TypeInfer.classes.test.cpp
View file

@ -19,13 +19,13 @@ struct ClassFixture : Fixture
unfreeze(arena);
TypeId baseClassInstanceType = arena.addType(ClassTypeVar{"BaseClass", {}, nullopt, nullopt, {}, {}});
TypeId baseClassInstanceType = arena.addType(ClassTypeVar{"BaseClass", {}, nullopt, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(baseClassInstanceType)->props = {
{"BaseMethod", {makeFunction(arena, baseClassInstanceType, {numberType}, {})}},
{"BaseField", {numberType}},
};
TypeId baseClassType = arena.addType(ClassTypeVar{"BaseClass", {}, nullopt, nullopt, {}, {}});
TypeId baseClassType = arena.addType(ClassTypeVar{"BaseClass", {}, nullopt, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(baseClassType)->props = {
{"StaticMethod", {makeFunction(arena, nullopt, {}, {numberType})}},
{"Clone", {makeFunction(arena, nullopt, {baseClassInstanceType}, {baseClassInstanceType})}},
@ -34,39 +34,39 @@ struct ClassFixture : Fixture
typeChecker.globalScope->exportedTypeBindings["BaseClass"] = TypeFun{{}, baseClassInstanceType};
addGlobalBinding(typeChecker, "BaseClass", baseClassType, "@test");
TypeId childClassInstanceType = arena.addType(ClassTypeVar{"ChildClass", {}, baseClassInstanceType, nullopt, {}, {}});
TypeId childClassInstanceType = arena.addType(ClassTypeVar{"ChildClass", {}, baseClassInstanceType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(childClassInstanceType)->props = {
{"Method", {makeFunction(arena, childClassInstanceType, {}, {typeChecker.stringType})}},
};
TypeId childClassType = arena.addType(ClassTypeVar{"ChildClass", {}, baseClassType, nullopt, {}, {}});
TypeId childClassType = arena.addType(ClassTypeVar{"ChildClass", {}, baseClassType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(childClassType)->props = {
{"New", {makeFunction(arena, nullopt, {}, {childClassInstanceType})}},
};
typeChecker.globalScope->exportedTypeBindings["ChildClass"] = TypeFun{{}, childClassInstanceType};
addGlobalBinding(typeChecker, "ChildClass", childClassType, "@test");
TypeId grandChildInstanceType = arena.addType(ClassTypeVar{"GrandChild", {}, childClassInstanceType, nullopt, {}, {}});
TypeId grandChildInstanceType = arena.addType(ClassTypeVar{"GrandChild", {}, childClassInstanceType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(grandChildInstanceType)->props = {
{"Method", {makeFunction(arena, grandChildInstanceType, {}, {typeChecker.stringType})}},
};
TypeId grandChildType = arena.addType(ClassTypeVar{"GrandChild", {}, baseClassType, nullopt, {}, {}});
TypeId grandChildType = arena.addType(ClassTypeVar{"GrandChild", {}, baseClassType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(grandChildType)->props = {
{"New", {makeFunction(arena, nullopt, {}, {grandChildInstanceType})}},
};
typeChecker.globalScope->exportedTypeBindings["GrandChild"] = TypeFun{{}, grandChildInstanceType};
addGlobalBinding(typeChecker, "GrandChild", childClassType, "@test");
TypeId anotherChildInstanceType = arena.addType(ClassTypeVar{"AnotherChild", {}, baseClassInstanceType, nullopt, {}, {}});
TypeId anotherChildInstanceType = arena.addType(ClassTypeVar{"AnotherChild", {}, baseClassInstanceType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(anotherChildInstanceType)->props = {
{"Method", {makeFunction(arena, anotherChildInstanceType, {}, {typeChecker.stringType})}},
};
TypeId anotherChildType = arena.addType(ClassTypeVar{"AnotherChild", {}, baseClassType, nullopt, {}, {}});
TypeId anotherChildType = arena.addType(ClassTypeVar{"AnotherChild", {}, baseClassType, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(anotherChildType)->props = {
{"New", {makeFunction(arena, nullopt, {}, {anotherChildInstanceType})}},
};
@ -75,13 +75,13 @@ struct ClassFixture : Fixture
TypeId vector2MetaType = arena.addType(TableTypeVar{});
TypeId vector2InstanceType = arena.addType(ClassTypeVar{"Vector2", {}, nullopt, vector2MetaType, {}, {}});
TypeId vector2InstanceType = arena.addType(ClassTypeVar{"Vector2", {}, nullopt, vector2MetaType, {}, {}, "Test"});
getMutable<ClassTypeVar>(vector2InstanceType)->props = {
{"X", {numberType}},
{"Y", {numberType}},
};
TypeId vector2Type = arena.addType(ClassTypeVar{"Vector2", {}, nullopt, nullopt, {}, {}});
TypeId vector2Type = arena.addType(ClassTypeVar{"Vector2", {}, nullopt, nullopt, {}, {}, "Test"});
getMutable<ClassTypeVar>(vector2Type)->props = {
{"New", {makeFunction(arena, nullopt, {numberType, numberType}, {vector2InstanceType})}},
};
@ -468,4 +468,18 @@ caused by:
toString(result.errors[0]));
}
TEST_CASE_FIXTURE(ClassFixture, "class_type_mismatch_with_name_conflict")
{
ScopedFastFlag luauClassDefinitionModuleInError{"LuauClassDefinitionModuleInError", true};
CheckResult result = check(R"(
local i = ChildClass.New()
type ChildClass = { x: number }
local a: ChildClass = i
)");
LUAU_REQUIRE_ERROR_COUNT(1, result);
CHECK_EQ("Type 'ChildClass' from 'Test' could not be converted into 'ChildClass' from 'MainModule'", toString(result.errors[0]));
}
TEST_SUITE_END();

2
tests/TypeInfer.definitions.test.cpp
View file

@ -295,8 +295,6 @@ TEST_CASE_FIXTURE(Fixture, "documentation_symbols_dont_attach_to_persistent_type
TEST_CASE_FIXTURE(Fixture, "single_class_type_identity_in_global_types")
{
ScopedFastFlag luauCloneDeclaredGlobals{"LuauCloneDeclaredGlobals", true};
loadDefinition(R"(
declare class Cls
end

30
tests/TypeInfer.functions.test.cpp
View file

@ -656,6 +656,11 @@ TEST_CASE_FIXTURE(Fixture, "toposort_doesnt_break_mutual_recursion")
TEST_CASE_FIXTURE(Fixture, "check_function_before_lambda_that_uses_it")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
};
CheckResult result = check(R"(
--!nonstrict
@ -664,7 +669,7 @@ TEST_CASE_FIXTURE(Fixture, "check_function_before_lambda_that_uses_it")
end
return function()
return f():andThen()
return f()
end
)");
@ -791,14 +796,18 @@ TEST_CASE_FIXTURE(Fixture, "calling_function_with_incorrect_argument_type_yields
TEST_CASE_FIXTURE(Fixture, "calling_function_with_anytypepack_doesnt_leak_free_types")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
};
CheckResult result = check(R"(
--!nonstrict
function Test(a)
function Test(a): ...any
return 1, ""
end
local tab = {}
table.insert(tab, Test(1));
)");
@ -1616,4 +1625,19 @@ TEST_CASE_FIXTURE(Fixture, "occurs_check_failure_in_function_return_type")
CHECK(nullptr != get<OccursCheckFailed>(result.errors[0]));
}
TEST_CASE_FIXTURE(Fixture, "weird_fail_to_unify_type_pack")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
};
CheckResult result = check(R"(
local function f() return end
local g = function() return f() end
)");
LUAU_REQUIRE_NO_ERRORS(result);
}
TEST_SUITE_END();

4
tests/TypeInfer.modules.test.cpp
View file

@ -307,8 +307,6 @@ type Rename = typeof(x.x)
TEST_CASE_FIXTURE(Fixture, "module_type_conflict")
{
ScopedFastFlag luauTypeMismatchModuleName{"LuauTypeMismatchModuleName", true};
fileResolver.source["game/A"] = R"(
export type T = { x: number }
return {}
@ -343,8 +341,6 @@ caused by:
TEST_CASE_FIXTURE(Fixture, "module_type_conflict_instantiated")
{
ScopedFastFlag luauTypeMismatchModuleName{"LuauTypeMismatchModuleName", true};
fileResolver.source["game/A"] = R"(
export type Wrap<T> = { x: T }
return {}

14
tests/TypeInfer.provisional.test.cpp
View file

@ -584,20 +584,6 @@ TEST_CASE_FIXTURE(Fixture, "specialization_binds_with_prototypes_too_early")
LUAU_REQUIRE_ERRORS(result); // Should not have any errors.
}
TEST_CASE_FIXTURE(Fixture, "weird_fail_to_unify_type_pack")
{
ScopedFastFlag sff[] = {
{"LuauLowerBoundsCalculation", false},
};
CheckResult result = check(R"(
local function f() return end
local g = function() return f() end
)");
LUAU_REQUIRE_ERRORS(result); // Should not have any errors.
}
TEST_CASE_FIXTURE(Fixture, "weird_fail_to_unify_variadic_pack")
{
ScopedFastFlag sff[] = {

8
tests/TypeInfer.refinements.test.cpp
View file

@ -44,7 +44,7 @@ struct RefinementClassFixture : Fixture
TypeArena& arena = typeChecker.globalTypes;
unfreeze(arena);
TypeId vec3 = arena.addType(ClassTypeVar{"Vector3", {}, std::nullopt, std::nullopt, {}, nullptr});
TypeId vec3 = arena.addType(ClassTypeVar{"Vector3", {}, std::nullopt, std::nullopt, {}, nullptr, "Test"});
getMutable<ClassTypeVar>(vec3)->props = {
{"X", Property{typeChecker.numberType}},
{"Y", Property{typeChecker.numberType}},
@ -52,7 +52,7 @@ struct RefinementClassFixture : Fixture
};
normalize(vec3, arena, *typeChecker.iceHandler);
TypeId inst = arena.addType(ClassTypeVar{"Instance", {}, std::nullopt, std::nullopt, {}, nullptr});
TypeId inst = arena.addType(ClassTypeVar{"Instance", {}, std::nullopt, std::nullopt, {}, nullptr, "Test"});
TypePackId isAParams = arena.addTypePack({inst, typeChecker.stringType});
TypePackId isARets = arena.addTypePack({typeChecker.booleanType});
@ -66,9 +66,9 @@ struct RefinementClassFixture : Fixture
};
normalize(inst, arena, *typeChecker.iceHandler);
TypeId folder = typeChecker.globalTypes.addType(ClassTypeVar{"Folder", {}, inst, std::nullopt, {}, nullptr});
TypeId folder = typeChecker.globalTypes.addType(ClassTypeVar{"Folder", {}, inst, std::nullopt, {}, nullptr, "Test"});
normalize(folder, arena, *typeChecker.iceHandler);
TypeId part = typeChecker.globalTypes.addType(ClassTypeVar{"Part", {}, inst, std::nullopt, {}, nullptr});
TypeId part = typeChecker.globalTypes.addType(ClassTypeVar{"Part", {}, inst, std::nullopt, {}, nullptr, "Test"});
getMutable<ClassTypeVar>(part)->props = {
{"Position", Property{vec3}},
};

2
tests/TypeInfer.tables.test.cpp
View file

@ -2086,7 +2086,6 @@ caused by:
TEST_CASE_FIXTURE(Fixture, "error_detailed_indexer_key")
{
ScopedFastFlag luauTableSubtypingVariance2{"LuauTableSubtypingVariance2", true}; // Only for new path
ScopedFastFlag luauExtendedIndexerError{"LuauExtendedIndexerError", true};
CheckResult result = check(R"(
type A = { [number]: string }
@ -2105,7 +2104,6 @@ caused by:
TEST_CASE_FIXTURE(Fixture, "error_detailed_indexer_value")
{
ScopedFastFlag luauTableSubtypingVariance2{"LuauTableSubtypingVariance2", true}; // Only for new path
ScopedFastFlag luauExtendedIndexerError{"LuauExtendedIndexerError", true};
CheckResult result = check(R"(
type A = { [number]: number }

18
tests/TypeInfer.test.cpp
View file

@ -86,16 +86,21 @@ TEST_CASE_FIXTURE(Fixture, "infer_locals_via_assignment_from_its_call_site")
TEST_CASE_FIXTURE(Fixture, "infer_in_nocheck_mode")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
};
CheckResult result = check(R"(
--!nocheck
function f(x)
return x
return 5
end
-- we get type information even if there's type errors
f(1, 2)
)");
CHECK_EQ("(any) -> (...any)", toString(requireType("f")));
CHECK_EQ("(any) -> number", toString(requireType("f")));
LUAU_REQUIRE_NO_ERRORS(result);
}
@ -363,6 +368,11 @@ TEST_CASE_FIXTURE(Fixture, "globals")
TEST_CASE_FIXTURE(Fixture, "globals2")
{
ScopedFastFlag sff[]{
{"LuauReturnTypeInferenceInNonstrict", true},
{"LuauLowerBoundsCalculation", true},
};
CheckResult result = check(R"(
--!nonstrict
foo = function() return 1 end
@ -373,9 +383,9 @@ TEST_CASE_FIXTURE(Fixture, "globals2")
TypeMismatch* tm = get<TypeMismatch>(result.errors[0]);
REQUIRE(tm);
CHECK_EQ("() -> (...any)", toString(tm->wantedType));
CHECK_EQ("() -> number", toString(tm->wantedType));
CHECK_EQ("string", toString(tm->givenType));
CHECK_EQ("() -> (...any)", toString(requireType("foo")));
CHECK_EQ("() -> number", toString(requireType("foo")));
}
TEST_CASE_FIXTURE(Fixture, "globals_are_banned_in_strict_mode")

6
tests/TypeVar.test.cpp
View file

@ -275,7 +275,7 @@ TEST_CASE("tagging_tables")
TEST_CASE("tagging_classes")
{
TypeVar base{ClassTypeVar{"Base", {}, std::nullopt, std::nullopt, {}, nullptr}};
TypeVar base{ClassTypeVar{"Base", {}, std::nullopt, std::nullopt, {}, nullptr, "Test"}};
CHECK(!Luau::hasTag(&base, "foo"));
Luau::attachTag(&base, "foo");
CHECK(Luau::hasTag(&base, "foo"));
@ -283,8 +283,8 @@ TEST_CASE("tagging_classes")
TEST_CASE("tagging_subclasses")
{
TypeVar base{ClassTypeVar{"Base", {}, std::nullopt, std::nullopt, {}, nullptr}};
TypeVar derived{ClassTypeVar{"Derived", {}, &base, std::nullopt, {}, nullptr}};
TypeVar base{ClassTypeVar{"Base", {}, std::nullopt, std::nullopt, {}, nullptr, "Test"}};
TypeVar derived{ClassTypeVar{"Derived", {}, &base, std::nullopt, {}, nullptr, "Test"}};
CHECK(!Luau::hasTag(&base, "foo"));
CHECK(!Luau::hasTag(&derived, "foo"));