mirror of
https://github.com/luau-lang/luau.git
synced 2024-11-15 14:25:44 +08:00
f2e6a8f4a5
This doesn't contain all changes for 507 yet but we might want to do the Luau 0.507 release a bit earlier to end the year sooner. Changes: - Type ascription (::) now permits casts between related types in both directions, allowing to refine or loosen the type (RFC #56) - Fix type definition for tonumber to return number? since the input string isn't guaranteed to contain a valid number - Fix type refinements for field access via [] - Many stability fixes for type checker - Provide extra information in error messages for type mismatches in more cases - Improve performance of type checking for large unions when union members are string literals - Add coverage reporting support to Repl (--coverage command line argument) and lua_getcoverage C API - Work around code signing issues during Makefile builds on macOS - Improve performance of truthiness checks in some cases, particularly on Apple M1, resulting in 10-25% perf gains on qsort benchmark depending on the CPU/compiler - Fix support for little-endian systems; IBM s390x here we go!
2533 lines
74 KiB
C++
2533 lines
74 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#include "Luau/Parser.h"
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#include "Luau/TypeInfer.h"
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#include "Fixture.h"
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#include "ScopedFlags.h"
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#include "doctest.h"
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LUAU_FASTFLAG(LuauFixAmbiguousErrorRecoveryInAssign)
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using namespace Luau;
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namespace
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{
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struct Counter
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{
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static int instanceCount;
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int id;
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Counter()
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{
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++instanceCount;
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id = instanceCount;
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}
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};
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int Counter::instanceCount = 0;
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// TODO: delete this and replace all other use of this function with matchParseError
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std::string getParseError(const std::string& code)
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{
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Fixture f;
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try
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{
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f.parse(code);
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}
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catch (const Luau::ParseErrors& e)
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{
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// in general, tests check only the first error
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return e.getErrors().front().getMessage();
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}
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throw std::runtime_error("Expected a parse error in '" + code + "'");
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}
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} // namespace
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TEST_SUITE_BEGIN("AllocatorTests");
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TEST_CASE("allocator_can_be_moved")
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{
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Counter* c = nullptr;
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auto inner = [&]() {
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Luau::Allocator allocator;
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c = allocator.alloc<Counter>();
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Luau::Allocator moved{std::move(allocator)};
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return moved;
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};
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Counter::instanceCount = 0;
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Luau::Allocator a{inner()};
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CHECK_EQ(1, c->id);
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}
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TEST_CASE("moved_out_Allocator_can_still_be_used")
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{
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Luau::Allocator outer;
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Luau::Allocator inner{std::move(outer)};
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int* i = outer.alloc<int>();
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REQUIRE(i != nullptr);
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*i = 55;
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REQUIRE_EQ(*i, 55);
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}
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TEST_CASE("aligns_things")
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{
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Luau::Allocator alloc;
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char* one = alloc.alloc<char>();
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double* two = alloc.alloc<double>();
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(void)one;
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CHECK_EQ(0, reinterpret_cast<intptr_t>(two) & (alignof(double) - 1));
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}
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TEST_CASE("initial_double_is_aligned")
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{
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Luau::Allocator alloc;
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double* one = alloc.alloc<double>();
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CHECK_EQ(0, reinterpret_cast<intptr_t>(one) & (alignof(double) - 1));
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}
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TEST_SUITE_END();
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TEST_SUITE_BEGIN("LexerTests");
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TEST_CASE("broken_string_works")
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{
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const std::string testInput = "[[";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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Lexeme lexeme = lexer.next();
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CHECK_EQ(lexeme.type, Lexeme::Type::BrokenString);
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CHECK_EQ(lexeme.location, Luau::Location(Luau::Position(0, 0), Luau::Position(0, 2)));
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}
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TEST_CASE("broken_comment")
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{
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const std::string testInput = "--[[ ";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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Lexeme lexeme = lexer.next();
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CHECK_EQ(lexeme.type, Lexeme::Type::BrokenComment);
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CHECK_EQ(lexeme.location, Luau::Location(Luau::Position(0, 0), Luau::Position(0, 6)));
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}
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TEST_CASE("broken_comment_kept")
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{
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const std::string testInput = "--[[ ";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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lexer.setSkipComments(true);
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CHECK_EQ(lexer.next().type, Lexeme::Type::BrokenComment);
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}
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TEST_CASE("comment_skipped")
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{
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const std::string testInput = "-- ";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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lexer.setSkipComments(true);
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CHECK_EQ(lexer.next().type, Lexeme::Type::Eof);
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}
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TEST_CASE("multilineCommentWithLexemeInAndAfter")
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{
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const std::string testInput = "--[[ function \n"
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"]] end";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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Lexeme comment = lexer.next();
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Lexeme end = lexer.next();
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CHECK_EQ(comment.type, Lexeme::Type::BlockComment);
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CHECK_EQ(comment.location, Luau::Location(Luau::Position(0, 0), Luau::Position(1, 2)));
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CHECK_EQ(end.type, Lexeme::Type::ReservedEnd);
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CHECK_EQ(end.location, Luau::Location(Luau::Position(1, 3), Luau::Position(1, 6)));
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}
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TEST_CASE("testBrokenEscapeTolerant")
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{
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const std::string testInput = "'\\3729472897292378'";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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Lexeme item = lexer.next();
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CHECK_EQ(item.type, Lexeme::QuotedString);
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CHECK_EQ(item.location, Luau::Location(Luau::Position(0, 0), Luau::Position(0, int(testInput.size()))));
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}
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TEST_CASE("testBigDelimiters")
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{
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const std::string testInput = "--[===[\n"
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"\n"
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"\n"
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"\n"
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"]===]";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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Lexeme item = lexer.next();
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CHECK_EQ(item.type, Lexeme::Type::BlockComment);
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CHECK_EQ(item.location, Luau::Location(Luau::Position(0, 0), Luau::Position(4, 5)));
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}
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TEST_CASE("lookahead")
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{
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const std::string testInput = "foo --[[ comment ]] bar : nil end";
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Luau::Allocator alloc;
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AstNameTable table(alloc);
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Lexer lexer(testInput.c_str(), testInput.size(), table);
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lexer.setSkipComments(true);
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lexer.next(); // must call next() before reading data from lexer at least once
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CHECK_EQ(lexer.current().type, Lexeme::Name);
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CHECK_EQ(lexer.current().name, std::string("foo"));
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CHECK_EQ(lexer.lookahead().type, Lexeme::Name);
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CHECK_EQ(lexer.lookahead().name, std::string("bar"));
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lexer.next();
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CHECK_EQ(lexer.current().type, Lexeme::Name);
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CHECK_EQ(lexer.current().name, std::string("bar"));
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CHECK_EQ(lexer.lookahead().type, ':');
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lexer.next();
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CHECK_EQ(lexer.current().type, ':');
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CHECK_EQ(lexer.lookahead().type, Lexeme::ReservedNil);
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lexer.next();
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CHECK_EQ(lexer.current().type, Lexeme::ReservedNil);
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CHECK_EQ(lexer.lookahead().type, Lexeme::ReservedEnd);
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lexer.next();
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CHECK_EQ(lexer.current().type, Lexeme::ReservedEnd);
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CHECK_EQ(lexer.lookahead().type, Lexeme::Eof);
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lexer.next();
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CHECK_EQ(lexer.current().type, Lexeme::Eof);
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CHECK_EQ(lexer.lookahead().type, Lexeme::Eof);
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}
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TEST_SUITE_END();
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TEST_SUITE_BEGIN("ParserTests");
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TEST_CASE_FIXTURE(Fixture, "basic_parse")
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{
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AstStat* stat = parse("print(\"Hello World!\")");
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REQUIRE(stat != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "can_haz_annotations")
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{
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AstStatBlock* block = parse("local foo: string = \"Hello Types!\"");
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REQUIRE(block != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "local_cannot_have_annotation_with_extensions_disabled")
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{
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Luau::ParseOptions options;
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options.allowTypeAnnotations = false;
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CHECK_THROWS_AS(parse("local foo: string = \"Hello Types!\"", options), std::exception);
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}
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TEST_CASE_FIXTURE(Fixture, "local_with_annotation")
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{
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AstStatBlock* block = parse(R"(
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local foo: string = "Hello Types!"
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)");
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REQUIRE(block != nullptr);
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REQUIRE(block->body.size > 0);
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AstStatLocal* local = block->body.data[0]->as<AstStatLocal>();
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REQUIRE(local != nullptr);
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REQUIRE_EQ(1, local->vars.size);
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AstLocal* l = local->vars.data[0];
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REQUIRE(l->annotation != nullptr);
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REQUIRE_EQ(1, local->values.size);
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}
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TEST_CASE_FIXTURE(Fixture, "type_names_can_contain_dots")
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{
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AstStatBlock* block = parse(R"(
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local foo: SomeModule.CoolType
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)");
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REQUIRE(block != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "functions_cannot_have_return_annotations_if_extensions_are_disabled")
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{
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Luau::ParseOptions options;
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options.allowTypeAnnotations = false;
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CHECK_THROWS_AS(parse("function foo(): number return 55 end", options), std::exception);
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}
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TEST_CASE_FIXTURE(Fixture, "functions_can_have_return_annotations")
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{
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AstStatBlock* block = parse(R"(
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function foo(): number return 55 end
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)");
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REQUIRE(block != nullptr);
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REQUIRE(block->body.size > 0);
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AstStatFunction* statFunction = block->body.data[0]->as<AstStatFunction>();
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REQUIRE(statFunction != nullptr);
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CHECK_EQ(statFunction->func->returnAnnotation.types.size, 1);
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CHECK(statFunction->func->returnAnnotation.tailType == nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "functions_can_have_a_function_type_annotation")
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{
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AstStatBlock* block = parse(R"(
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function f(): (number) -> nil return nil end
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)");
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REQUIRE(block != nullptr);
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REQUIRE(block->body.size > 0);
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AstStatFunction* statFunc = block->body.data[0]->as<AstStatFunction>();
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REQUIRE(statFunc != nullptr);
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AstArray<AstType*>& retTypes = statFunc->func->returnAnnotation.types;
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REQUIRE(statFunc->func->hasReturnAnnotation);
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CHECK(statFunc->func->returnAnnotation.tailType == nullptr);
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REQUIRE(retTypes.size == 1);
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AstTypeFunction* funTy = retTypes.data[0]->as<AstTypeFunction>();
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REQUIRE(funTy != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "function_return_type_should_disambiguate_from_function_type_and_multiple_returns")
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{
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AstStatBlock* block = parse(R"(
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function f(): (number, string) return 1, "foo" end
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)");
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REQUIRE(block != nullptr);
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REQUIRE(block->body.size > 0);
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AstStatFunction* statFunc = block->body.data[0]->as<AstStatFunction>();
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REQUIRE(statFunc != nullptr);
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AstArray<AstType*>& retTypes = statFunc->func->returnAnnotation.types;
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REQUIRE(statFunc->func->hasReturnAnnotation);
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CHECK(statFunc->func->returnAnnotation.tailType == nullptr);
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REQUIRE(retTypes.size == 2);
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AstTypeReference* ty0 = retTypes.data[0]->as<AstTypeReference>();
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REQUIRE(ty0 != nullptr);
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REQUIRE(ty0->name == "number");
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AstTypeReference* ty1 = retTypes.data[1]->as<AstTypeReference>();
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REQUIRE(ty1 != nullptr);
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REQUIRE(ty1->name == "string");
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}
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TEST_CASE_FIXTURE(Fixture, "function_return_type_should_parse_as_function_type_annotation_with_no_args")
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{
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AstStatBlock* block = parse(R"(
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function f(): () -> nil return nil end
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)");
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REQUIRE(block != nullptr);
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REQUIRE(block->body.size > 0);
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AstStatFunction* statFunc = block->body.data[0]->as<AstStatFunction>();
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REQUIRE(statFunc != nullptr);
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AstArray<AstType*>& retTypes = statFunc->func->returnAnnotation.types;
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REQUIRE(statFunc->func->hasReturnAnnotation);
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CHECK(statFunc->func->returnAnnotation.tailType == nullptr);
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REQUIRE(retTypes.size == 1);
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AstTypeFunction* funTy = retTypes.data[0]->as<AstTypeFunction>();
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REQUIRE(funTy != nullptr);
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REQUIRE(funTy->argTypes.types.size == 0);
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CHECK(funTy->argTypes.tailType == nullptr);
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CHECK(funTy->returnTypes.tailType == nullptr);
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AstTypeReference* ty = funTy->returnTypes.types.data[0]->as<AstTypeReference>();
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REQUIRE(ty != nullptr);
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REQUIRE(ty->name == "nil");
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}
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TEST_CASE_FIXTURE(Fixture, "annotations_can_be_tables")
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{
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AstStatBlock* stat = parse(R"(
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local zero: number
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local one: {x: number, y: string}
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)");
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REQUIRE(stat != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "tables_should_have_an_indexer_and_keys")
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{
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AstStatBlock* stat = parse(R"(
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local t: {
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[string]: number,
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f: () -> nil
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}
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)");
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REQUIRE(stat != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "tables_can_have_trailing_separator")
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{
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AstStatBlock* stat = parse(R"(
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local zero: number
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local one: {x: number, y: string, }
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)");
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REQUIRE(stat != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "tables_can_use_semicolons")
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{
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AstStatBlock* stat = parse(R"(
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local zero: number
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local one: {x: number; y: string; }
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)");
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REQUIRE(stat != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "other_places_where_type_annotations_are_allowed")
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{
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AstStatBlock* stat = parse(R"(
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for i: number = 0, 50 do end
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for i: number, s: string in expr() do end
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)");
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REQUIRE(stat != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "nil_is_a_valid_type_name")
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{
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AstStatBlock* stat = parse(R"(
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local n: nil
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)");
|
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REQUIRE(stat != nullptr);
|
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}
|
||
|
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TEST_CASE_FIXTURE(Fixture, "function_type_annotation")
|
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{
|
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AstStatBlock* stat = parse(R"(
|
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local f: (number, string) -> nil
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)");
|
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|
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REQUIRE(stat != nullptr);
|
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}
|
||
|
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TEST_CASE_FIXTURE(Fixture, "functions_can_return_multiple_values")
|
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{
|
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AstStatBlock* stat = parse(R"(
|
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local f: (number) -> (number, number)
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)");
|
||
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REQUIRE(stat != nullptr);
|
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}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "functions_can_have_0_arguments")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
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local f: () -> number
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "functions_can_return_0_values")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
local f: (number) -> ()
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "intersection_of_two_function_types_if_no_returns")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
local f: (string) -> () & (number) -> ()
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
|
||
AstStatLocal* local = block->body.data[0]->as<AstStatLocal>();
|
||
AstTypeIntersection* annotation = local->vars.data[0]->annotation->as<AstTypeIntersection>();
|
||
REQUIRE(annotation != nullptr);
|
||
CHECK(annotation->types.data[0]->as<AstTypeFunction>());
|
||
CHECK(annotation->types.data[1]->as<AstTypeFunction>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "intersection_of_two_function_types_if_two_or_more_returns")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
local f: (string) -> (string, number) & (number) -> (number, string)
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
|
||
AstStatLocal* local = block->body.data[0]->as<AstStatLocal>();
|
||
AstTypeIntersection* annotation = local->vars.data[0]->annotation->as<AstTypeIntersection>();
|
||
REQUIRE(annotation != nullptr);
|
||
CHECK(annotation->types.data[0]->as<AstTypeFunction>());
|
||
CHECK(annotation->types.data[1]->as<AstTypeFunction>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "return_type_is_an_intersection_type_if_led_with_one_parenthesized_type")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
local f: (string) -> (string) & (number) -> (number)
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
|
||
AstStatLocal* local = block->body.data[0]->as<AstStatLocal>();
|
||
AstTypeFunction* annotation = local->vars.data[0]->annotation->as<AstTypeFunction>();
|
||
REQUIRE(annotation != nullptr);
|
||
|
||
AstTypeIntersection* returnAnnotation = annotation->returnTypes.types.data[0]->as<AstTypeIntersection>();
|
||
REQUIRE(returnAnnotation != nullptr);
|
||
CHECK(returnAnnotation->types.data[0]->as<AstTypeReference>());
|
||
CHECK(returnAnnotation->types.data[1]->as<AstTypeFunction>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "illegal_type_alias_if_extensions_are_disabled")
|
||
{
|
||
Luau::ParseOptions options;
|
||
options.allowTypeAnnotations = false;
|
||
|
||
CHECK_THROWS_AS(parse("type A = number", options), std::exception);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_alias_to_a_typeof")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
type A = typeof(1)
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE(block->body.size > 0);
|
||
|
||
auto typeAliasStat = block->body.data[0]->as<AstStatTypeAlias>();
|
||
REQUIRE(typeAliasStat != nullptr);
|
||
CHECK_EQ(typeAliasStat->location, (Location{{1, 8}, {1, 26}}));
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_alias_should_point_to_string")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
type A = string
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE(block->body.size > 0);
|
||
REQUIRE(block->body.data[0]->is<AstStatTypeAlias>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_alias_should_not_interfere_with_type_function_call_or_assignment")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
type("a")
|
||
type = nil
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE(block->body.size > 0);
|
||
|
||
AstStatExpr* stat = block->body.data[0]->as<AstStatExpr>();
|
||
REQUIRE(stat != nullptr);
|
||
REQUIRE(stat->expr->as<AstExprCall>());
|
||
|
||
REQUIRE(block->body.data[1]->is<AstStatAssign>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_alias_should_work_when_name_is_also_local")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
local A = nil
|
||
type A = string
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE(block->body.size == 2);
|
||
REQUIRE(block->body.data[0]->is<AstStatLocal>());
|
||
REQUIRE(block->body.data[1]->is<AstStatTypeAlias>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_messages")
|
||
{
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: (number, number) -> (string
|
||
)"),
|
||
"Expected ')' (to close '(' at line 2), got <eof>");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: (number, number) -> (
|
||
string
|
||
)"),
|
||
"Expected ')' (to close '(' at line 2), got <eof>");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: (number, number)
|
||
)"),
|
||
"Expected '->' when parsing function type, got <eof>");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: (number, number
|
||
)"),
|
||
"Expected ')' (to close '(' at line 2), got <eof>");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: {foo: string,
|
||
)"),
|
||
"Expected identifier when parsing table field, got <eof>");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: {foo: string
|
||
)"),
|
||
"Expected '}' (to close '{' at line 2), got <eof>");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: { [string]: number, [number]: string }
|
||
)"),
|
||
"Cannot have more than one table indexer");
|
||
|
||
CHECK_EQ(getParseError(R"(
|
||
type T = <a>foo
|
||
)"),
|
||
"Expected '(' when parsing function parameters, got 'foo'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "mixed_intersection_and_union_not_allowed")
|
||
{
|
||
matchParseError("type A = number & string | boolean", "Mixing union and intersection types is not allowed; consider wrapping in parentheses.");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "mixed_intersection_and_union_allowed_when_parenthesized")
|
||
{
|
||
try
|
||
{
|
||
parse("type A = (number & string) | boolean");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
FAIL(e.what());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "cannot_write_multiple_values_in_type_groups")
|
||
{
|
||
matchParseError("type F = ((string, number))", "Expected '->' when parsing function type, got ')'");
|
||
matchParseError("type F = () -> ((string, number))", "Expected '->' when parsing function type, got ')'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_alias_error_messages")
|
||
{
|
||
CHECK_EQ(getParseError("type 5 = number"), "Expected identifier when parsing type name, got '5'");
|
||
CHECK_EQ(getParseError("type A"), "Expected '=' when parsing type alias, got <eof>");
|
||
CHECK_EQ(getParseError("type A<"), "Expected identifier, got <eof>");
|
||
CHECK_EQ(getParseError("type A<B"), "Expected '>' (to close '<' at column 7), got <eof>");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_assertion_expression")
|
||
{
|
||
(void)parse(R"(
|
||
local a = something() :: any
|
||
)");
|
||
}
|
||
|
||
// The bug that motivated this test was an infinite loop.
|
||
// TODO: Set a timer and crash if the timeout is exceeded.
|
||
TEST_CASE_FIXTURE(Fixture, "last_line_does_not_have_to_be_blank")
|
||
{
|
||
(void)parse("-- print('hello')");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "type_assertion_expression_binds_tightly")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
local a = one :: any + two :: any
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatBlock* block = stat->as<AstStatBlock>();
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE_EQ(1, block->body.size);
|
||
|
||
AstStatLocal* local = block->body.data[0]->as<AstStatLocal>();
|
||
REQUIRE(local != nullptr);
|
||
REQUIRE_EQ(1, local->values.size);
|
||
|
||
AstExprBinary* bin = local->values.data[0]->as<AstExprBinary>();
|
||
REQUIRE(bin != nullptr);
|
||
|
||
CHECK(nullptr != bin->left->as<AstExprTypeAssertion>());
|
||
CHECK(nullptr != bin->right->as<AstExprTypeAssertion>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "mode_is_unset_if_no_hot_comment")
|
||
{
|
||
ParseResult result = parseEx("print('Hello World!')");
|
||
CHECK(result.hotcomments.empty());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "sense_hot_comment_on_first_line")
|
||
{
|
||
ParseResult result = parseEx(" --!strict ");
|
||
std::optional<Mode> mode = parseMode(result.hotcomments);
|
||
REQUIRE(bool(mode));
|
||
CHECK_EQ(int(*mode), int(Mode::Strict));
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "stop_if_line_ends_with_hyphen")
|
||
{
|
||
CHECK_THROWS_AS(parse(" -"), std::exception);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "nonstrict_mode")
|
||
{
|
||
ParseResult result = parseEx("--!nonstrict");
|
||
CHECK(result.errors.empty());
|
||
std::optional<Mode> mode = parseMode(result.hotcomments);
|
||
REQUIRE(bool(mode));
|
||
CHECK_EQ(int(*mode), int(Mode::Nonstrict));
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "nocheck_mode")
|
||
{
|
||
ParseResult result = parseEx("--!nocheck");
|
||
CHECK(result.errors.empty());
|
||
std::optional<Mode> mode = parseMode(result.hotcomments);
|
||
REQUIRE(bool(mode));
|
||
CHECK_EQ(int(*mode), int(Mode::NoCheck));
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "vertical_space")
|
||
{
|
||
ParseResult result = parseEx("a()\vb()");
|
||
CHECK(result.errors.empty());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_type_name")
|
||
{
|
||
CHECK_EQ(getParseError(R"(
|
||
local a: Foo.=
|
||
)"),
|
||
"Expected identifier when parsing field name, got '='");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_numbers_decimal")
|
||
{
|
||
AstStat* stat = parse("return 1, .5, 1.5, 1e-5, 1.5e-5, 12_345.1_25");
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
CHECK(str->list.size == 6);
|
||
CHECK_EQ(str->list.data[0]->as<AstExprConstantNumber>()->value, 1.0);
|
||
CHECK_EQ(str->list.data[1]->as<AstExprConstantNumber>()->value, 0.5);
|
||
CHECK_EQ(str->list.data[2]->as<AstExprConstantNumber>()->value, 1.5);
|
||
CHECK_EQ(str->list.data[3]->as<AstExprConstantNumber>()->value, 1.0e-5);
|
||
CHECK_EQ(str->list.data[4]->as<AstExprConstantNumber>()->value, 1.5e-5);
|
||
CHECK_EQ(str->list.data[5]->as<AstExprConstantNumber>()->value, 12345.125);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_numbers_hexadecimal")
|
||
{
|
||
AstStat* stat = parse("return 0xab, 0XAB05, 0xff_ff");
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
CHECK(str->list.size == 3);
|
||
CHECK_EQ(str->list.data[0]->as<AstExprConstantNumber>()->value, 0xab);
|
||
CHECK_EQ(str->list.data[1]->as<AstExprConstantNumber>()->value, 0xAB05);
|
||
CHECK_EQ(str->list.data[2]->as<AstExprConstantNumber>()->value, 0xFFFF);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_numbers_binary")
|
||
{
|
||
AstStat* stat = parse("return 0b1, 0b0, 0b101010");
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
CHECK(str->list.size == 3);
|
||
CHECK_EQ(str->list.data[0]->as<AstExprConstantNumber>()->value, 1);
|
||
CHECK_EQ(str->list.data[1]->as<AstExprConstantNumber>()->value, 0);
|
||
CHECK_EQ(str->list.data[2]->as<AstExprConstantNumber>()->value, 42);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_numbers_error")
|
||
{
|
||
CHECK_EQ(getParseError("return 0b123"), "Malformed number");
|
||
CHECK_EQ(getParseError("return 123x"), "Malformed number");
|
||
CHECK_EQ(getParseError("return 0xg"), "Malformed number");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "break_return_not_last_error")
|
||
{
|
||
CHECK_EQ(getParseError("return 0 print(5)"), "Expected <eof>, got 'print'");
|
||
CHECK_EQ(getParseError("while true do break print(5) end"), "Expected 'end' (to close 'do' at column 12), got 'print'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "error_on_unicode")
|
||
{
|
||
CHECK_EQ(getParseError(R"(
|
||
local ☃ = 10
|
||
)"),
|
||
"Expected identifier when parsing variable name, got Unicode character U+2603");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "allow_unicode_in_string")
|
||
{
|
||
ParseResult result = parseEx("local snowman = \"☃\"");
|
||
CHECK(result.errors.empty());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "error_on_confusable")
|
||
{
|
||
CHECK_EQ(getParseError(R"(
|
||
local pi = 3․13
|
||
)"),
|
||
"Expected identifier when parsing expression, got Unicode character U+2024 (did you mean '.'?)");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "error_on_non_utf8_sequence")
|
||
{
|
||
const char* expected = "Expected identifier when parsing expression, got invalid UTF-8 sequence";
|
||
|
||
CHECK_EQ(getParseError("local pi = \xFF!"), expected);
|
||
CHECK_EQ(getParseError("local pi = \xE2!"), expected);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "lex_broken_unicode")
|
||
{
|
||
const std::string testInput = std::string("\xFF\xFE☃․");
|
||
|
||
Luau::Allocator alloc;
|
||
AstNameTable table(alloc);
|
||
Lexer lexer(testInput.c_str(), testInput.size(), table);
|
||
Lexeme lexeme = lexer.current();
|
||
|
||
lexeme = lexer.next();
|
||
CHECK_EQ(lexeme.type, Lexeme::BrokenUnicode);
|
||
CHECK_EQ(lexeme.codepoint, 0);
|
||
CHECK_EQ(lexeme.location, Luau::Location(Luau::Position(0, 0), Luau::Position(0, 1)));
|
||
|
||
lexeme = lexer.next();
|
||
CHECK_EQ(lexeme.type, Lexeme::BrokenUnicode);
|
||
CHECK_EQ(lexeme.codepoint, 0);
|
||
CHECK_EQ(lexeme.location, Luau::Location(Luau::Position(0, 1), Luau::Position(0, 2)));
|
||
|
||
lexeme = lexer.next();
|
||
CHECK_EQ(lexeme.type, Lexeme::BrokenUnicode);
|
||
CHECK_EQ(lexeme.codepoint, 0x2603);
|
||
CHECK_EQ(lexeme.location, Luau::Location(Luau::Position(0, 2), Luau::Position(0, 5)));
|
||
|
||
lexeme = lexer.next();
|
||
CHECK_EQ(lexeme.type, Lexeme::BrokenUnicode);
|
||
CHECK_EQ(lexeme.codepoint, 0x2024);
|
||
CHECK_EQ(lexeme.location, Luau::Location(Luau::Position(0, 5), Luau::Position(0, 8)));
|
||
|
||
lexeme = lexer.next();
|
||
CHECK_EQ(lexeme.type, Lexeme::Eof);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_continue")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
while true do
|
||
continue()
|
||
continue = 5
|
||
continue, continue = continue
|
||
continue
|
||
end
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatBlock* block = stat->as<AstStatBlock>();
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE_EQ(1, block->body.size);
|
||
|
||
AstStatWhile* wb = block->body.data[0]->as<AstStatWhile>();
|
||
REQUIRE(wb != nullptr);
|
||
|
||
AstStatBlock* wblock = wb->body->as<AstStatBlock>();
|
||
REQUIRE(wblock != nullptr);
|
||
REQUIRE_EQ(4, wblock->body.size);
|
||
|
||
REQUIRE(wblock->body.data[0]->is<AstStatExpr>());
|
||
REQUIRE(wblock->body.data[1]->is<AstStatAssign>());
|
||
REQUIRE(wblock->body.data[2]->is<AstStatAssign>());
|
||
REQUIRE(wblock->body.data[3]->is<AstStatContinue>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "continue_not_last_error")
|
||
{
|
||
CHECK_EQ(getParseError("while true do continue print(5) end"), "Expected 'end' (to close 'do' at column 12), got 'print'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_export_type")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
export()
|
||
export = 5
|
||
export, export = export
|
||
export type A = number
|
||
type A = number
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatBlock* block = stat->as<AstStatBlock>();
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE_EQ(5, block->body.size);
|
||
|
||
REQUIRE(block->body.data[0]->is<AstStatExpr>());
|
||
REQUIRE(block->body.data[1]->is<AstStatAssign>());
|
||
REQUIRE(block->body.data[2]->is<AstStatAssign>());
|
||
REQUIRE(block->body.data[3]->is<AstStatTypeAlias>());
|
||
REQUIRE(block->body.data[4]->is<AstStatTypeAlias>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "export_is_an_identifier_only_when_followed_by_type")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
export function a() end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Incomplete statement: expected assignment or a function call", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "incomplete_statement_error")
|
||
{
|
||
CHECK_EQ(getParseError("fiddlesticks"), "Incomplete statement: expected assignment or a function call");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_compound_assignment")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
a += 5
|
||
)");
|
||
|
||
REQUIRE(block != nullptr);
|
||
REQUIRE(block->body.size == 1);
|
||
REQUIRE(block->body.data[0]->is<AstStatCompoundAssign>());
|
||
REQUIRE(block->body.data[0]->as<AstStatCompoundAssign>()->op == AstExprBinary::Add);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_compound_assignment_error_call")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
a() += 5
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected identifier when parsing expression, got '+='", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_compound_assignment_error_not_lvalue")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
(a) += 5
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Assigned expression must be a variable or a field", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_compound_assignment_error_multiple")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
a, b += 5
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected '=' when parsing assignment, got '+='", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_nesting_based_end_detection")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(-- i am line 1
|
||
function BottomUpTree(item, depth)
|
||
if depth > 0 then
|
||
local i = item + item
|
||
depth = depth - 1
|
||
local left, right = BottomUpTree(i-1, depth), BottomUpTree(i, depth)
|
||
return { item, left, right }
|
||
else
|
||
return { item }
|
||
end
|
||
|
||
function ItemCheck(tree)
|
||
if tree[2] then
|
||
return tree[1] + ItemCheck(tree[2]) - ItemCheck(tree[3])
|
||
else
|
||
return tree[1]
|
||
end
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected 'end' (to close 'function' at line 2), got <eof>; did you forget to close 'else' at line 8?",
|
||
e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_nesting_based_end_detection_single_line")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(-- i am line 1
|
||
function ItemCheck(tree)
|
||
if tree[2] then return tree[1] + ItemCheck(tree[2]) - ItemCheck(tree[3]) else return tree[1]
|
||
end
|
||
|
||
function BottomUpTree(item, depth)
|
||
if depth > 0 then
|
||
local i = item + item
|
||
depth = depth - 1
|
||
local left, right = BottomUpTree(i-1, depth), BottomUpTree(i, depth)
|
||
return { item, left, right }
|
||
else
|
||
return { item }
|
||
end
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected 'end' (to close 'function' at line 2), got <eof>; did you forget to close 'else' at line 3?",
|
||
e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_nesting_based_end_detection_local_repeat")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(-- i am line 1
|
||
repeat
|
||
print(1)
|
||
repeat
|
||
print(2)
|
||
print(3)
|
||
until false
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected 'until' (to close 'repeat' at line 2), got <eof>; did you forget to close 'repeat' at line 4?",
|
||
e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_nesting_based_end_detection_local_function")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(-- i am line 1
|
||
local function BottomUpTree(item, depth)
|
||
if depth > 0 then
|
||
local i = item + item
|
||
depth = depth - 1
|
||
local left, right = BottomUpTree(i-1, depth), BottomUpTree(i, depth)
|
||
return { item, left, right }
|
||
else
|
||
return { item }
|
||
end
|
||
|
||
local function ItemCheck(tree)
|
||
if tree[2] then
|
||
return tree[1] + ItemCheck(tree[2]) - ItemCheck(tree[3])
|
||
else
|
||
return tree[1]
|
||
end
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected 'end' (to close 'function' at line 2), got <eof>; did you forget to close 'else' at line 8?",
|
||
e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_nesting_based_end_detection_failsafe_earlier")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(-- i am line 1
|
||
local function ItemCheck(tree)
|
||
if tree[2] then
|
||
return tree[1] + ItemCheck(tree[2]) - ItemCheck(tree[3])
|
||
else
|
||
return tree[1]
|
||
end
|
||
end
|
||
|
||
local function BottomUpTree(item, depth)
|
||
if depth > 0 then
|
||
local i = item + item
|
||
depth = depth - 1
|
||
local left, right = BottomUpTree(i-1, depth), BottomUpTree(i, depth)
|
||
return { item, left, right }
|
||
else
|
||
return { item }
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected 'end' (to close 'function' at line 10), got <eof>", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_nesting_based_end_detection_nested")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(-- i am line 1
|
||
function stringifyTable(t)
|
||
local entries = {}
|
||
for k, v in pairs(t) do
|
||
-- if we find a nested table, convert that recursively
|
||
if type(v) == "table" then
|
||
v = stringifyTable(v)
|
||
else
|
||
v = tostring(v)
|
||
k = tostring(k)
|
||
|
||
-- add another entry to our stringified table
|
||
entries[#entries + 1] = ("s = s"):format(k, v)
|
||
end
|
||
|
||
-- the memory location of the table
|
||
local id = tostring(t):sub(8)
|
||
|
||
return ("{s}@s"):format(table.concat(entries, ", "), id)
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected 'end' (to close 'function' at line 2), got <eof>; did you forget to close 'else' at line 8?",
|
||
e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_table_literal")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
function stringifyTable(t)
|
||
local foo = (name = t)
|
||
return foo
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ(
|
||
"Expected ')' (to close '(' at column 17), got '='; did you mean to use '{' when defining a table?", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_function_call")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
function stringifyTable(t)
|
||
local foo = t:Parse 2
|
||
return foo
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ(e.getErrors().front().getLocation().begin.line, 2);
|
||
CHECK_EQ("Expected '(', '{' or <string> when parsing function call, got '2'", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_function_call_newline")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
function stringifyTable(t)
|
||
local foo = t:Parse
|
||
return foo
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const ParseErrors& e)
|
||
{
|
||
CHECK_EQ(e.getErrors().front().getLocation().begin.line, 2);
|
||
CHECK_EQ("Expected function call arguments after '('", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_with_too_many_nested_type_group")
|
||
{
|
||
ScopedFastInt sfis{"LuauRecursionLimit", 20};
|
||
|
||
matchParseError(
|
||
"function f(): (((((((((Fail))))))))) end", "Exceeded allowed recursion depth; simplify your type annotation to make the code compile");
|
||
|
||
matchParseError("function f(): () -> () -> () -> () -> () -> () -> () -> () -> () -> () -> () end",
|
||
"Exceeded allowed recursion depth; simplify your type annotation to make the code compile");
|
||
|
||
matchParseError(
|
||
"local t: {a: {b: {c: {d: {e: {f: {}}}}}}}", "Exceeded allowed recursion depth; simplify your type annotation to make the code compile");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_with_too_many_nested_if_statements")
|
||
{
|
||
ScopedFastInt sfis{"LuauRecursionLimit", 10};
|
||
ScopedFastFlag sff{"LuauIfStatementRecursionGuard", true};
|
||
|
||
matchParseErrorPrefix(
|
||
"function f() if true then if true then if true then if true then if true then if true then if true then if true then if true "
|
||
"then if true then if true then end end end end end end end end end end end end",
|
||
"Exceeded allowed recursion depth;");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_with_too_many_changed_elseif_statements")
|
||
{
|
||
ScopedFastInt sfis{"LuauRecursionLimit", 10};
|
||
ScopedFastFlag sff{"LuauIfStatementRecursionGuard", true};
|
||
|
||
matchParseErrorPrefix(
|
||
"function f() if false then elseif false then elseif false then elseif false then elseif false then elseif false then elseif "
|
||
"false then elseif false then elseif false then elseif false then elseif false then end end",
|
||
"Exceeded allowed recursion depth;");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_with_too_many_nested_ifelse_expressions1")
|
||
{
|
||
ScopedFastFlag sff{"LuauIfElseExpressionBaseSupport", true};
|
||
ScopedFastInt sfis{"LuauRecursionLimit", 10};
|
||
|
||
matchParseError("function f() return if true then 1 elseif true then 2 elseif true then 3 elseif true then 4 elseif true then 5 elseif true then "
|
||
"6 elseif true then 7 elseif true then 8 elseif true then 9 elseif true then 10 else 11 end",
|
||
"Exceeded allowed recursion depth; simplify your expression to make the code compile");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_with_too_many_nested_ifelse_expressions2")
|
||
{
|
||
ScopedFastFlag sff{"LuauIfElseExpressionBaseSupport", true};
|
||
ScopedFastInt sfis{"LuauRecursionLimit", 10};
|
||
|
||
matchParseError(
|
||
"function f() return if if if if if if if if if if true then false else true then false else true then false else true then false else true "
|
||
"then false else true then false else true then false else true then false else true then false else true then 1 else 2 end",
|
||
"Exceeded allowed recursion depth; simplify your expression to make the code compile");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "unparenthesized_function_return_type_list")
|
||
{
|
||
matchParseError(
|
||
"function foo(): string, number end", "Expected a statement, got ','; did you forget to wrap the list of return types in parentheses?");
|
||
|
||
matchParseError("function foo(): (number) -> string, string",
|
||
"Expected a statement, got ','; did you forget to wrap the list of return types in parentheses?");
|
||
|
||
// Will throw if the parse fails
|
||
parse(R"(
|
||
type Vector3MT = {
|
||
__add: (Vector3MT, Vector3MT) -> Vector3MT,
|
||
__mul: (Vector3MT, Vector3MT|number) -> Vector3MT
|
||
}
|
||
)");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "short_array_types")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
local n: {string}
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
AstStatLocal* local = stat->body.data[0]->as<AstStatLocal>();
|
||
AstTypeTable* annotation = local->vars.data[0]->annotation->as<AstTypeTable>();
|
||
REQUIRE(annotation != nullptr);
|
||
CHECK(annotation->props.size == 0);
|
||
REQUIRE(annotation->indexer);
|
||
REQUIRE(annotation->indexer->indexType->is<AstTypeReference>());
|
||
CHECK(annotation->indexer->indexType->as<AstTypeReference>()->name == "number");
|
||
REQUIRE(annotation->indexer->resultType->is<AstTypeReference>());
|
||
CHECK(annotation->indexer->resultType->as<AstTypeReference>()->name == "string");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "short_array_types_must_be_alone")
|
||
{
|
||
matchParseError("local n: {string, number}", "Expected '}' (to close '{' at column 10), got ','");
|
||
matchParseError("local n: {[number]: string, number}", "Expected ':' when parsing table field, got '}'");
|
||
matchParseError("local n: {x: string, number}", "Expected ':' when parsing table field, got '}'");
|
||
matchParseError("local n: {x: string, nil}", "Expected identifier when parsing table field, got 'nil'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "short_array_types_do_not_break_field_names")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
local n: {string: number}
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
AstStatLocal* local = stat->body.data[0]->as<AstStatLocal>();
|
||
AstTypeTable* annotation = local->vars.data[0]->annotation->as<AstTypeTable>();
|
||
REQUIRE(annotation != nullptr);
|
||
REQUIRE(annotation->props.size == 1);
|
||
CHECK(!annotation->indexer);
|
||
REQUIRE(annotation->props.data[0].name == "string");
|
||
REQUIRE(annotation->props.data[0].type->is<AstTypeReference>());
|
||
REQUIRE(annotation->props.data[0].type->as<AstTypeReference>()->name == "number");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "short_array_types_are_not_field_names_when_complex")
|
||
{
|
||
matchParseError("local n: {string | number: number}", "Expected '}' (to close '{' at column 10), got ':'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "nil_can_not_be_a_field_name")
|
||
{
|
||
matchParseError("local n: {nil: number}", "Expected '}' (to close '{' at column 10), got ':'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "string_literal_call")
|
||
{
|
||
AstStatBlock* stat = parse("do foo 'bar' end");
|
||
REQUIRE(stat != nullptr);
|
||
AstStatBlock* dob = stat->body.data[0]->as<AstStatBlock>();
|
||
AstStatExpr* stc = dob->body.data[0]->as<AstStatExpr>();
|
||
REQUIRE(stc != nullptr);
|
||
AstExprCall* ec = stc->expr->as<AstExprCall>();
|
||
CHECK(ec->args.size == 1);
|
||
AstExprConstantString* arg = ec->args.data[0]->as<AstExprConstantString>();
|
||
REQUIRE(arg != nullptr);
|
||
CHECK(std::string(arg->value.data, arg->value.size) == "bar");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "multiline_strings_newlines")
|
||
{
|
||
AstStatBlock* stat = parse("return [=[\nfoo\r\nbar\n\nbaz\n]=]");
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* ret = stat->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(ret != nullptr);
|
||
|
||
AstExprConstantString* str = ret->list.data[0]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK(std::string(str->value.data, str->value.size) == "foo\nbar\n\nbaz\n");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "string_literals_escape")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
return
|
||
"foo\n\r",
|
||
"foo\0324",
|
||
"foo\x204",
|
||
"foo\u{20}",
|
||
"foo\u{0451}"
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* ret = stat->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(ret != nullptr);
|
||
CHECK(ret->list.size == 5);
|
||
|
||
AstExprConstantString* str;
|
||
|
||
str = ret->list.data[0]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo\n\r");
|
||
|
||
str = ret->list.data[1]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo 4");
|
||
|
||
str = ret->list.data[2]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo 4");
|
||
|
||
str = ret->list.data[3]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo ");
|
||
|
||
str = ret->list.data[4]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo\xd1\x91");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "string_literals_escape_newline")
|
||
{
|
||
AstStatBlock* stat = parse("return \"foo\\z\n bar\", \"foo\\\n bar\", \"foo\\\r\nbar\"");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* ret = stat->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(ret != nullptr);
|
||
CHECK(ret->list.size == 3);
|
||
|
||
AstExprConstantString* str;
|
||
|
||
str = ret->list.data[0]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foobar");
|
||
|
||
str = ret->list.data[1]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo\n bar");
|
||
|
||
str = ret->list.data[2]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "foo\nbar");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "string_literals_escapes")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
return
|
||
"\xAB",
|
||
"\u{2024}",
|
||
"\121",
|
||
"\1x",
|
||
"\t",
|
||
"\n"
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* ret = stat->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(ret != nullptr);
|
||
CHECK(ret->list.size == 6);
|
||
|
||
AstExprConstantString* str;
|
||
|
||
str = ret->list.data[0]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "\xAB");
|
||
|
||
str = ret->list.data[1]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "\xE2\x80\xA4");
|
||
|
||
str = ret->list.data[2]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "\x79");
|
||
|
||
str = ret->list.data[3]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "\x01x");
|
||
|
||
str = ret->list.data[4]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "\t");
|
||
|
||
str = ret->list.data[5]->as<AstExprConstantString>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK_EQ(std::string(str->value.data, str->value.size), "\n");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "string_literals_escapes_broken")
|
||
{
|
||
const char* expected = "String literal contains malformed escape sequence";
|
||
|
||
matchParseError("return \"\\u{\"", expected);
|
||
matchParseError("return \"\\u{FO}\"", expected);
|
||
matchParseError("return \"\\u{123456789}\"", expected);
|
||
matchParseError("return \"\\359\"", expected);
|
||
matchParseError("return \"\\xFO\"", expected);
|
||
matchParseError("return \"\\xF\"", expected);
|
||
matchParseError("return \"\\x\"", expected);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "string_literals_broken")
|
||
{
|
||
matchParseError("return \"", "Malformed string");
|
||
matchParseError("return \"\\", "Malformed string");
|
||
matchParseError("return \"\r\r", "Malformed string");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "number_literals")
|
||
{
|
||
AstStatBlock* stat = parse(R"(
|
||
return
|
||
1,
|
||
1.5,
|
||
.5,
|
||
12_34_56,
|
||
0x1234,
|
||
0b010101
|
||
)");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatReturn* ret = stat->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(ret != nullptr);
|
||
CHECK(ret->list.size == 6);
|
||
|
||
AstExprConstantNumber* num;
|
||
|
||
num = ret->list.data[0]->as<AstExprConstantNumber>();
|
||
REQUIRE(num != nullptr);
|
||
CHECK_EQ(num->value, 1.0);
|
||
|
||
num = ret->list.data[1]->as<AstExprConstantNumber>();
|
||
REQUIRE(num != nullptr);
|
||
CHECK_EQ(num->value, 1.5);
|
||
|
||
num = ret->list.data[2]->as<AstExprConstantNumber>();
|
||
REQUIRE(num != nullptr);
|
||
CHECK_EQ(num->value, 0.5);
|
||
|
||
num = ret->list.data[3]->as<AstExprConstantNumber>();
|
||
REQUIRE(num != nullptr);
|
||
CHECK_EQ(num->value, 123456);
|
||
|
||
num = ret->list.data[4]->as<AstExprConstantNumber>();
|
||
REQUIRE(num != nullptr);
|
||
CHECK_EQ(num->value, 0x1234);
|
||
|
||
num = ret->list.data[5]->as<AstExprConstantNumber>();
|
||
REQUIRE(num != nullptr);
|
||
CHECK_EQ(num->value, 0x15);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "end_extent_of_functions_unions_and_intersections")
|
||
{
|
||
AstStatBlock* block = parse(R"(
|
||
type F = (string) -> string
|
||
type G = string | number | boolean
|
||
type H = string & number & boolean
|
||
print('hello')
|
||
)");
|
||
|
||
REQUIRE_EQ(4, block->body.size);
|
||
CHECK_EQ((Position{1, 35}), block->body.data[0]->location.end);
|
||
CHECK_EQ((Position{2, 42}), block->body.data[1]->location.end);
|
||
CHECK_EQ((Position{3, 42}), block->body.data[2]->location.end);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_loop_control")
|
||
{
|
||
matchParseError("break", "break statement must be inside a loop");
|
||
matchParseError("repeat local function a() break end until false", "break statement must be inside a loop");
|
||
matchParseError("continue", "continue statement must be inside a loop");
|
||
matchParseError("repeat local function a() continue end until false", "continue statement must be inside a loop");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_confusing_function_call")
|
||
{
|
||
auto result1 = matchParseError(R"(
|
||
function add(x, y) return x + y end
|
||
add
|
||
(4, 7)
|
||
)",
|
||
"Ambiguous syntax: this looks like an argument list for a function call, but could also be a start of new statement; use ';' to separate "
|
||
"statements");
|
||
|
||
CHECK(result1.errors.size() == 1);
|
||
|
||
auto result2 = matchParseError(R"(
|
||
function add(x, y) return x + y end
|
||
local f = add
|
||
(f :: any)['x'] = 2
|
||
)",
|
||
"Ambiguous syntax: this looks like an argument list for a function call, but could also be a start of new statement; use ';' to separate "
|
||
"statements");
|
||
|
||
CHECK(result2.errors.size() == 1);
|
||
|
||
auto result3 = matchParseError(R"(
|
||
local x = {}
|
||
function x:add(a, b) return a + b end
|
||
x:add
|
||
(1, 2)
|
||
)",
|
||
"Ambiguous syntax: this looks like an argument list for a function call, but could also be a start of new statement; use ';' to separate "
|
||
"statements");
|
||
|
||
CHECK(result3.errors.size() == 1);
|
||
|
||
auto result4 = matchParseError(R"(
|
||
local t = {}
|
||
function f() return t end
|
||
t.x, (f)
|
||
().y = 5, 6
|
||
)",
|
||
"Ambiguous syntax: this looks like an argument list for a function call, but could also be a start of new statement; use ';' to separate "
|
||
"statements");
|
||
|
||
if (FFlag::LuauFixAmbiguousErrorRecoveryInAssign)
|
||
CHECK(result4.errors.size() == 1);
|
||
else
|
||
CHECK(result4.errors.size() == 5);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_varargs")
|
||
{
|
||
matchParseError("function add(x, y) return ... end", "Cannot use '...' outside of a vararg function");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_assignment_lvalue")
|
||
{
|
||
matchParseError(R"(
|
||
local a, b
|
||
(2), b = b, a
|
||
)",
|
||
"Assigned expression must be a variable or a field");
|
||
|
||
matchParseError(R"(
|
||
local a, b
|
||
a, (3) = b, a
|
||
)",
|
||
"Assigned expression must be a variable or a field");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_error_type_annotation")
|
||
{
|
||
matchParseError("local a : 2 = 2", "Expected type, got '2'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_declarations")
|
||
{
|
||
AstStatBlock* stat = parseEx(R"(
|
||
declare foo: number
|
||
declare function bar(x: number): string
|
||
declare function var(...: any)
|
||
)")
|
||
.root;
|
||
|
||
REQUIRE(stat);
|
||
REQUIRE_EQ(stat->body.size, 3);
|
||
|
||
AstStatDeclareGlobal* global = stat->body.data[0]->as<AstStatDeclareGlobal>();
|
||
REQUIRE(global);
|
||
CHECK(global->name == "foo");
|
||
CHECK(global->type);
|
||
|
||
AstStatDeclareFunction* func = stat->body.data[1]->as<AstStatDeclareFunction>();
|
||
REQUIRE(func);
|
||
CHECK(func->name == "bar");
|
||
REQUIRE_EQ(func->params.types.size, 1);
|
||
REQUIRE_EQ(func->retTypes.types.size, 1);
|
||
|
||
AstStatDeclareFunction* varFunc = stat->body.data[2]->as<AstStatDeclareFunction>();
|
||
REQUIRE(varFunc);
|
||
CHECK(varFunc->name == "var");
|
||
CHECK(varFunc->params.tailType);
|
||
|
||
matchParseError("declare function foo(x)", "All declaration parameters must be annotated");
|
||
matchParseError("declare foo", "Expected ':' when parsing global variable declaration, got <eof>");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_class_declarations")
|
||
{
|
||
AstStatBlock* stat = parseEx(R"(
|
||
declare class Foo
|
||
prop: number
|
||
function method(self, foo: number): string
|
||
end
|
||
|
||
declare class Bar extends Foo
|
||
prop2: string
|
||
end
|
||
)")
|
||
.root;
|
||
|
||
REQUIRE_EQ(stat->body.size, 2);
|
||
|
||
AstStatDeclareClass* declaredClass = stat->body.data[0]->as<AstStatDeclareClass>();
|
||
REQUIRE(declaredClass);
|
||
CHECK(declaredClass->name == "Foo");
|
||
CHECK(!declaredClass->superName);
|
||
|
||
REQUIRE_EQ(declaredClass->props.size, 2);
|
||
|
||
AstDeclaredClassProp& prop = declaredClass->props.data[0];
|
||
CHECK(prop.name == "prop");
|
||
CHECK(prop.ty->is<AstTypeReference>());
|
||
|
||
AstDeclaredClassProp& method = declaredClass->props.data[1];
|
||
CHECK(method.name == "method");
|
||
CHECK(method.ty->is<AstTypeFunction>());
|
||
|
||
AstStatDeclareClass* subclass = stat->body.data[1]->as<AstStatDeclareClass>();
|
||
REQUIRE(subclass);
|
||
REQUIRE(subclass->superName);
|
||
CHECK(subclass->name == "Bar");
|
||
CHECK(*subclass->superName == "Foo");
|
||
|
||
REQUIRE_EQ(subclass->props.size, 1);
|
||
AstDeclaredClassProp& prop2 = subclass->props.data[0];
|
||
CHECK(prop2.name == "prop2");
|
||
CHECK(prop2.ty->is<AstTypeReference>());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "class_method_properties")
|
||
{
|
||
const ParseResult p1 = matchParseError(R"(
|
||
declare class Foo
|
||
-- method's first parameter must be 'self'
|
||
function method(foo: number)
|
||
function method2(self)
|
||
end
|
||
)",
|
||
"'self' must be present as the unannotated first parameter");
|
||
|
||
REQUIRE_EQ(1, p1.root->body.size);
|
||
|
||
AstStatDeclareClass* klass = p1.root->body.data[0]->as<AstStatDeclareClass>();
|
||
REQUIRE(klass != nullptr);
|
||
|
||
CHECK_EQ(2, klass->props.size);
|
||
|
||
const ParseResult p2 = matchParseError(R"(
|
||
declare class Foo
|
||
function method(self, foo)
|
||
function method2()
|
||
end
|
||
)",
|
||
"All declaration parameters aside from 'self' must be annotated");
|
||
|
||
REQUIRE_EQ(1, p2.root->body.size);
|
||
|
||
AstStatDeclareClass* klass2 = p2.root->body.data[0]->as<AstStatDeclareClass>();
|
||
REQUIRE(klass2 != nullptr);
|
||
|
||
CHECK_EQ(2, klass2->props.size);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_variadics")
|
||
{
|
||
//clang-format off
|
||
AstStatBlock* stat = parseEx(R"(
|
||
function foo(bar, ...: number): ...string
|
||
end
|
||
|
||
type Foo = (string, number, ...number) -> ...boolean
|
||
type Bar = () -> (number, ...boolean)
|
||
)")
|
||
.root;
|
||
//clang-format on
|
||
|
||
REQUIRE(stat);
|
||
REQUIRE_EQ(stat->body.size, 3);
|
||
|
||
AstStatFunction* fn = stat->body.data[0]->as<AstStatFunction>();
|
||
REQUIRE(fn);
|
||
CHECK(fn->func->vararg);
|
||
CHECK(fn->func->varargAnnotation);
|
||
|
||
AstStatTypeAlias* foo = stat->body.data[1]->as<AstStatTypeAlias>();
|
||
REQUIRE(foo);
|
||
AstTypeFunction* fnFoo = foo->type->as<AstTypeFunction>();
|
||
REQUIRE(fnFoo);
|
||
CHECK_EQ(fnFoo->argTypes.types.size, 2);
|
||
CHECK(fnFoo->argTypes.tailType);
|
||
CHECK_EQ(fnFoo->returnTypes.types.size, 0);
|
||
CHECK(fnFoo->returnTypes.tailType);
|
||
|
||
AstStatTypeAlias* bar = stat->body.data[2]->as<AstStatTypeAlias>();
|
||
REQUIRE(bar);
|
||
AstTypeFunction* fnBar = bar->type->as<AstTypeFunction>();
|
||
REQUIRE(fnBar);
|
||
CHECK_EQ(fnBar->argTypes.types.size, 0);
|
||
CHECK(!fnBar->argTypes.tailType);
|
||
CHECK_EQ(fnBar->returnTypes.types.size, 1);
|
||
CHECK(fnBar->returnTypes.tailType);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "variadics_must_be_last")
|
||
{
|
||
matchParseError("function foo(): (...number, string) end", "Expected ')' (to close '(' at column 17), got ','");
|
||
matchParseError("type Foo = (...number, string) -> (...string, number)", "Expected ')' (to close '(' at column 12), got ','");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "variadic_definition_parsing")
|
||
{
|
||
AstStatBlock* stat = parseEx(R"(
|
||
declare function foo(...: string): ...string
|
||
declare class Foo
|
||
function a(self, ...: string): ...string
|
||
end
|
||
)")
|
||
.root;
|
||
|
||
REQUIRE(stat != nullptr);
|
||
|
||
matchParseError("declare function foo(...)", "All declaration parameters must be annotated");
|
||
matchParseError("declare class Foo function a(self, ...) end", "All declaration parameters aside from 'self' must be annotated");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "generic_pack_parsing")
|
||
{
|
||
ParseResult result = parseEx(R"(
|
||
function f<a...>(...: a...)
|
||
end
|
||
|
||
type A = (a...) -> b...
|
||
)");
|
||
|
||
AstStatBlock* stat = result.root;
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatFunction* fn = stat->body.data[0]->as<AstStatFunction>();
|
||
REQUIRE(fn != nullptr);
|
||
REQUIRE(fn->func->varargAnnotation != nullptr);
|
||
|
||
AstTypePackGeneric* annot = fn->func->varargAnnotation->as<AstTypePackGeneric>();
|
||
REQUIRE(annot != nullptr);
|
||
CHECK(annot->genericName == "a");
|
||
|
||
AstStatTypeAlias* alias = stat->body.data[1]->as<AstStatTypeAlias>();
|
||
REQUIRE(alias != nullptr);
|
||
AstTypeFunction* fnTy = alias->type->as<AstTypeFunction>();
|
||
REQUIRE(fnTy != nullptr);
|
||
|
||
AstTypePackGeneric* argAnnot = fnTy->argTypes.tailType->as<AstTypePackGeneric>();
|
||
REQUIRE(argAnnot != nullptr);
|
||
CHECK(argAnnot->genericName == "a");
|
||
|
||
AstTypePackGeneric* retAnnot = fnTy->returnTypes.tailType->as<AstTypePackGeneric>();
|
||
REQUIRE(retAnnot != nullptr);
|
||
CHECK(retAnnot->genericName == "b");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "generic_function_declaration_parsing")
|
||
{
|
||
ParseResult result = parseEx(R"(
|
||
declare function f<a, b, c...>()
|
||
)");
|
||
|
||
AstStatBlock* stat = result.root;
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatDeclareFunction* decl = stat->body.data[0]->as<AstStatDeclareFunction>();
|
||
REQUIRE(decl != nullptr);
|
||
REQUIRE_EQ(decl->generics.size, 2);
|
||
REQUIRE_EQ(decl->genericPacks.size, 1);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "function_type_named_arguments")
|
||
{
|
||
{
|
||
ParseResult result = parseEx("type MyFunc = (a: number, b: string, c: number) -> string");
|
||
|
||
AstStatBlock* stat = result.root;
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatTypeAlias* decl = stat->body.data[0]->as<AstStatTypeAlias>();
|
||
REQUIRE(decl != nullptr);
|
||
AstTypeFunction* func = decl->type->as<AstTypeFunction>();
|
||
REQUIRE(func != nullptr);
|
||
REQUIRE_EQ(func->argTypes.types.size, 3);
|
||
REQUIRE_EQ(func->argNames.size, 3);
|
||
REQUIRE(func->argNames.data[2]);
|
||
CHECK_EQ(func->argNames.data[2]->first, "c");
|
||
}
|
||
|
||
{
|
||
ParseResult result = parseEx("type MyFunc = (a: number, string, c: number) -> string");
|
||
|
||
AstStatBlock* stat = result.root;
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatTypeAlias* decl = stat->body.data[0]->as<AstStatTypeAlias>();
|
||
REQUIRE(decl != nullptr);
|
||
AstTypeFunction* func = decl->type->as<AstTypeFunction>();
|
||
REQUIRE(func != nullptr);
|
||
REQUIRE_EQ(func->argTypes.types.size, 3);
|
||
REQUIRE_EQ(func->argNames.size, 3);
|
||
REQUIRE(!func->argNames.data[1]);
|
||
REQUIRE(func->argNames.data[2]);
|
||
CHECK_EQ(func->argNames.data[2]->first, "c");
|
||
}
|
||
|
||
{
|
||
ParseResult result = parseEx("type MyFunc = (a: number, string, number) -> string");
|
||
|
||
AstStatBlock* stat = result.root;
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatTypeAlias* decl = stat->body.data[0]->as<AstStatTypeAlias>();
|
||
REQUIRE(decl != nullptr);
|
||
AstTypeFunction* func = decl->type->as<AstTypeFunction>();
|
||
REQUIRE(func != nullptr);
|
||
REQUIRE_EQ(func->argTypes.types.size, 3);
|
||
REQUIRE_EQ(func->argNames.size, 3);
|
||
REQUIRE(!func->argNames.data[1]);
|
||
REQUIRE(!func->argNames.data[2]);
|
||
}
|
||
|
||
{
|
||
ParseResult result = parseEx("type MyFunc = (a: number, b: string, c: number) -> (d: number, e: string, f: number) -> string");
|
||
|
||
AstStatBlock* stat = result.root;
|
||
REQUIRE(stat != nullptr);
|
||
|
||
AstStatTypeAlias* decl = stat->body.data[0]->as<AstStatTypeAlias>();
|
||
REQUIRE(decl != nullptr);
|
||
AstTypeFunction* func = decl->type->as<AstTypeFunction>();
|
||
REQUIRE(func != nullptr);
|
||
REQUIRE_EQ(func->argTypes.types.size, 3);
|
||
REQUIRE_EQ(func->argNames.size, 3);
|
||
REQUIRE(func->argNames.data[2]);
|
||
CHECK_EQ(func->argNames.data[2]->first, "c");
|
||
AstTypeFunction* funcRet = func->returnTypes.types.data[0]->as<AstTypeFunction>();
|
||
REQUIRE(funcRet != nullptr);
|
||
REQUIRE_EQ(funcRet->argTypes.types.size, 3);
|
||
REQUIRE_EQ(funcRet->argNames.size, 3);
|
||
REQUIRE(func->argNames.data[2]);
|
||
CHECK_EQ(funcRet->argNames.data[2]->first, "f");
|
||
}
|
||
|
||
matchParseError("type MyFunc = (a: number, b: string, c: number) -> (d: number, e: string, f: number)",
|
||
"Expected '->' when parsing function type, got <eof>");
|
||
|
||
matchParseError("type MyFunc = (number) -> (d: number) <a, b, c> -> number", "Expected '->' when parsing function type, got '<'");
|
||
}
|
||
|
||
TEST_SUITE_END();
|
||
|
||
TEST_SUITE_BEGIN("ParseErrorRecovery");
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "multiple_parse_errors")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
local a = 3 * (
|
||
return a +
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(2, e.getErrors().size());
|
||
}
|
||
}
|
||
|
||
// check that we are not skipping tokens that weren't processed at all
|
||
TEST_CASE_FIXTURE(Fixture, "statement_error_recovery_expected")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
function a(a, b) return a + b end
|
||
some
|
||
a(2, 5)
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "statement_error_recovery_unexpected")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(+)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "extra_token_in_consume")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
function test + (a, f) return a + f end
|
||
return test(2, 3)
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
CHECK_EQ("Expected '(' when parsing function, got '+'", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "extra_token_in_consume_match")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
function test(a, f+) return a + f end
|
||
return test(2, 3)
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
CHECK_EQ("Expected ')' (to close '(' at column 14), got '+'", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "extra_token_in_consume_match_end")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
if true then
|
||
return 12
|
||
then
|
||
end
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
CHECK_EQ("Expected 'end' (to close 'then' at line 2), got 'then'", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "extra_table_indexer_recovery")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
local a : { [string] : number, [number] : string, count: number }
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recovery_error_limit_1")
|
||
{
|
||
ScopedFastInt luauParseErrorLimit("LuauParseErrorLimit", 1);
|
||
|
||
try
|
||
{
|
||
parse("local a = ");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(1, e.getErrors().size());
|
||
CHECK_EQ(e.getErrors().front().getMessage(), e.what());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recovery_error_limit_2")
|
||
{
|
||
ScopedFastInt luauParseErrorLimit("LuauParseErrorLimit", 2);
|
||
|
||
try
|
||
{
|
||
parse("escape escape escape");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(3, e.getErrors().size());
|
||
CHECK_EQ("3 parse errors", std::string(e.what()));
|
||
CHECK_EQ("Reached error limit (2)", e.getErrors().back().getMessage());
|
||
}
|
||
}
|
||
|
||
class CountAstNodes : public AstVisitor
|
||
{
|
||
public:
|
||
bool visit(AstNode* node) override
|
||
{
|
||
count++;
|
||
|
||
return true;
|
||
}
|
||
|
||
unsigned count = 0;
|
||
};
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recovery_of_parenthesized_expressions")
|
||
{
|
||
auto checkAstEquivalence = [this](const char* codeWithErrors, const char* code) {
|
||
try
|
||
{
|
||
parse(codeWithErrors);
|
||
}
|
||
catch (const Luau::ParseErrors&)
|
||
{
|
||
}
|
||
|
||
CountAstNodes counterWithErrors;
|
||
sourceModule->root->visit(&counterWithErrors);
|
||
|
||
parse(code);
|
||
|
||
CountAstNodes counter;
|
||
sourceModule->root->visit(&counter);
|
||
|
||
CHECK_EQ(counterWithErrors.count, counter.count);
|
||
};
|
||
|
||
auto checkRecovery = [this, checkAstEquivalence](const char* codeWithErrors, const char* code, unsigned expectedErrorCount) {
|
||
try
|
||
{
|
||
parse(codeWithErrors);
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(expectedErrorCount, e.getErrors().size());
|
||
checkAstEquivalence(codeWithErrors, code);
|
||
}
|
||
};
|
||
|
||
checkRecovery("function foo(a, b. c) return a + b end", "function foo(a, b) return a + b end", 1);
|
||
checkRecovery("function foo(a, b: { a: number, b: number. c:number }) return a + b end",
|
||
"function foo(a, b: { a: number, b: number }) return a + b end", 1);
|
||
|
||
checkRecovery("function foo(a, b): (number -> number return a + b end", "function foo(a, b): (number) -> number return a + b end", 1);
|
||
checkRecovery("function foo(a, b): (number, number -> number return a + b end", "function foo(a, b): (number) -> number return a + b end", 1);
|
||
checkRecovery("function foo(a, b): (number; number) -> number return a + b end", "function foo(a, b): (number) -> number return a + b end", 1);
|
||
|
||
checkRecovery("function foo(a, b): (number, number return a + b end", "function foo(a, b): (number, number) end", 1);
|
||
checkRecovery("local function foo(a, b): (number, number return a + b end", "local function foo(a, b): (number, number) end", 1);
|
||
|
||
// These tests correctly recovered before the changes and we test that new recovery didn't make them worse
|
||
// (by skipping more tokens necessary)
|
||
checkRecovery("type F = (number, number -> number", "type F = (number, number) -> number", 1);
|
||
checkRecovery("function foo(a, b: { a: number, b: number) return a + b end", "function foo(a, b: { a: number, b: number }) return a + b end", 1);
|
||
checkRecovery("function foo(a, b: { [number: number}) return a + b end", "function foo(a, b: { [number]: number}) return a + b end", 1);
|
||
checkRecovery("local n: (string | number = 2", "local n: (string | number) = 2", 1);
|
||
|
||
// Check that we correctly stop at the end of a line
|
||
checkRecovery(R"(
|
||
function foo(a, b
|
||
return a + b
|
||
end
|
||
)",
|
||
"function foo(a, b) return a + b end", 1);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "incomplete_method_call")
|
||
{
|
||
const std::string_view source = R"(
|
||
function howdy()
|
||
return game:
|
||
end
|
||
)";
|
||
|
||
SourceModule sourceModule;
|
||
ParseResult result = Parser::parse(source.data(), source.size(), *sourceModule.names, *sourceModule.allocator, {});
|
||
|
||
REQUIRE_EQ(1, result.root->body.size);
|
||
|
||
AstStatFunction* howdyFunction = result.root->body.data[0]->as<AstStatFunction>();
|
||
REQUIRE(howdyFunction != nullptr);
|
||
|
||
AstStatBlock* body = howdyFunction->func->body;
|
||
REQUIRE_EQ(1, body->body.size);
|
||
|
||
AstStatReturn* ret = body->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(ret != nullptr);
|
||
|
||
REQUIRE_GT(howdyFunction->location.end, body->location.end);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "incomplete_method_call_2")
|
||
{
|
||
const std::string_view source = R"(
|
||
local game = { GetService=function(s) return 'hello' end }
|
||
|
||
function a()
|
||
game:a
|
||
end
|
||
)";
|
||
|
||
SourceModule sourceModule;
|
||
ParseResult result = Parser::parse(source.data(), source.size(), *sourceModule.names, *sourceModule.allocator, {});
|
||
|
||
REQUIRE_EQ(2, result.root->body.size);
|
||
|
||
AstStatFunction* howdyFunction = result.root->body.data[1]->as<AstStatFunction>();
|
||
REQUIRE(howdyFunction != nullptr);
|
||
|
||
AstStatBlock* body = howdyFunction->func->body;
|
||
REQUIRE_EQ(1, body->body.size);
|
||
|
||
AstStatError* ret = body->body.data[0]->as<AstStatError>();
|
||
REQUIRE(ret != nullptr);
|
||
|
||
REQUIRE_GT(howdyFunction->location.end, body->location.end);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "incomplete_method_call_still_yields_an_AstExprIndexName")
|
||
{
|
||
ParseResult result = tryParse(R"(
|
||
game:
|
||
)");
|
||
|
||
REQUIRE_EQ(1, result.root->body.size);
|
||
|
||
AstStatError* stat = result.root->body.data[0]->as<AstStatError>();
|
||
REQUIRE(stat);
|
||
|
||
AstExprError* expr = stat->expressions.data[0]->as<AstExprError>();
|
||
REQUIRE(expr);
|
||
|
||
AstExprIndexName* indexName = expr->expressions.data[0]->as<AstExprIndexName>();
|
||
REQUIRE(indexName);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recover_confusables")
|
||
{
|
||
// Binary
|
||
matchParseError("local a = 4 != 10", "Unexpected '!=', did you mean '~='?");
|
||
matchParseError("local a = true && false", "Unexpected '&&', did you mean 'and'?");
|
||
matchParseError("local a = false || true", "Unexpected '||', did you mean 'or'?");
|
||
|
||
// Unary
|
||
matchParseError("local a = !false", "Unexpected '!', did you mean 'not'?");
|
||
|
||
// Check that separate tokens are not considered as a single one
|
||
matchParseError("local a = 4 ! = 10", "Expected identifier when parsing expression, got '!'");
|
||
matchParseError("local a = true & & false", "Expected identifier when parsing expression, got '&'");
|
||
matchParseError("local a = false | | true", "Expected identifier when parsing expression, got '|'");
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "capture_comments")
|
||
{
|
||
ParseOptions options;
|
||
options.captureComments = true;
|
||
|
||
ParseResult result = parseEx(R"(
|
||
--!strict
|
||
|
||
local a = 5 -- comment one
|
||
local b = 8 -- comment two
|
||
--[[
|
||
Multi line comment
|
||
]]
|
||
local c = 'see'
|
||
)",
|
||
options);
|
||
|
||
CHECK(result.errors.empty());
|
||
|
||
CHECK_EQ(4, result.commentLocations.size());
|
||
CHECK_EQ((Location{{1, 8}, {1, 17}}), result.commentLocations[0].location);
|
||
CHECK_EQ((Location{{3, 20}, {3, 34}}), result.commentLocations[1].location);
|
||
CHECK_EQ((Location{{4, 20}, {4, 34}}), result.commentLocations[2].location);
|
||
CHECK_EQ((Location{{5, 8}, {7, 10}}), result.commentLocations[3].location);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "capture_broken_comment_at_the_start_of_the_file")
|
||
{
|
||
ParseOptions options;
|
||
options.captureComments = true;
|
||
|
||
ParseResult result = parseEx(R"(
|
||
--[[
|
||
)",
|
||
options);
|
||
|
||
CHECK_EQ(1, result.commentLocations.size());
|
||
CHECK_EQ((Location{{1, 8}, {2, 4}}), result.commentLocations[0].location);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "capture_broken_comment")
|
||
{
|
||
ParseOptions options;
|
||
options.captureComments = true;
|
||
|
||
ParseResult result = tryParse(R"(
|
||
local a = "test"
|
||
|
||
--[[broken!
|
||
)",
|
||
options);
|
||
|
||
CHECK_EQ(1, result.commentLocations.size());
|
||
CHECK_EQ((Location{{3, 8}, {4, 4}}), result.commentLocations[0].location);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "empty_function_type_error_recovery")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
type Fn = (
|
||
any,
|
||
string | number | ()
|
||
) -> any
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected '->' after '()' when parsing function type; did you mean 'nil'?", e.getErrors().front().getMessage());
|
||
}
|
||
|
||
// If we have arguments or generics, don't use special case
|
||
try
|
||
{
|
||
parse(R"(type Fn = (any, string | number | (number, number)) -> any)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected '->' when parsing function type, got ')'", e.getErrors().front().getMessage());
|
||
}
|
||
|
||
try
|
||
{
|
||
parse(R"(type Fn = (any, string | number | <a>()) -> any)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected '->' when parsing function type, got ')'", e.getErrors().front().getMessage());
|
||
}
|
||
|
||
try
|
||
{
|
||
parse(R"(type Fn = (any, string | number | <a...>()) -> any)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ("Expected '->' when parsing function type, got ')'", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "AstName_comparison")
|
||
{
|
||
CHECK(!(AstName() < AstName()));
|
||
|
||
AstName one{"one"};
|
||
AstName two{"two"};
|
||
|
||
CHECK_NE((one < two), (two < one));
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "generic_type_list_recovery")
|
||
{
|
||
try
|
||
{
|
||
parse(R"(
|
||
local function foo<T..., U>(a: U, ...: T...): (U, ...T) return a, ... end
|
||
return foo(1, 2 -- to check for a second error after recovery
|
||
)");
|
||
FAIL("Expected ParseErrors to be thrown");
|
||
}
|
||
catch (const Luau::ParseErrors& e)
|
||
{
|
||
CHECK_EQ(2, e.getErrors().size());
|
||
CHECK_EQ("Generic types come before generic type packs", e.getErrors().front().getMessage());
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recover_index_name_keyword")
|
||
{
|
||
ParseResult result = tryParse(R"(
|
||
local b
|
||
local a = b.do
|
||
)");
|
||
CHECK_EQ(1, result.errors.size());
|
||
|
||
result = tryParse(R"(
|
||
local b
|
||
local a = b.
|
||
do end
|
||
)");
|
||
CHECK_EQ(1, result.errors.size());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recover_self_call_keyword")
|
||
{
|
||
ParseResult result = tryParse(R"(
|
||
local b
|
||
local a = b:do
|
||
)");
|
||
CHECK_EQ(2, result.errors.size());
|
||
|
||
result = tryParse(R"(
|
||
local b
|
||
local a = b:
|
||
do end
|
||
)");
|
||
CHECK_EQ(2, result.errors.size());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "recover_type_index_name_keyword")
|
||
{
|
||
ParseResult result = tryParse(R"(
|
||
local A
|
||
local b : A.do
|
||
)");
|
||
CHECK_EQ(1, result.errors.size());
|
||
|
||
result = tryParse(R"(
|
||
local A
|
||
local b : A.do
|
||
do end
|
||
)");
|
||
CHECK_EQ(1, result.errors.size());
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_if_else_expression")
|
||
{
|
||
ScopedFastFlag sff{"LuauIfElseExpressionBaseSupport", true};
|
||
|
||
{
|
||
AstStat* stat = parse("return if true then 1 else 2");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK(str->list.size == 1);
|
||
auto* ifElseExpr = str->list.data[0]->as<AstExprIfElse>();
|
||
REQUIRE(ifElseExpr != nullptr);
|
||
}
|
||
|
||
{
|
||
AstStat* stat = parse("return if true then 1 elseif true then 2 else 3");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK(str->list.size == 1);
|
||
auto* ifElseExpr1 = str->list.data[0]->as<AstExprIfElse>();
|
||
REQUIRE(ifElseExpr1 != nullptr);
|
||
auto* ifElseExpr2 = ifElseExpr1->falseExpr->as<AstExprIfElse>();
|
||
REQUIRE(ifElseExpr2 != nullptr);
|
||
}
|
||
|
||
// Use "else if" as opposed to elseif
|
||
{
|
||
AstStat* stat = parse("return if true then 1 else if true then 2 else 3");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK(str->list.size == 1);
|
||
auto* ifElseExpr1 = str->list.data[0]->as<AstExprIfElse>();
|
||
REQUIRE(ifElseExpr1 != nullptr);
|
||
auto* ifElseExpr2 = ifElseExpr1->falseExpr->as<AstExprIfElse>();
|
||
REQUIRE(ifElseExpr2 != nullptr);
|
||
}
|
||
|
||
// Use an if-else expression as the conditional expression of an if-else expression
|
||
{
|
||
AstStat* stat = parse("return if if true then false else true then 1 else 2");
|
||
|
||
REQUIRE(stat != nullptr);
|
||
AstStatReturn* str = stat->as<AstStatBlock>()->body.data[0]->as<AstStatReturn>();
|
||
REQUIRE(str != nullptr);
|
||
CHECK(str->list.size == 1);
|
||
auto* ifElseExpr = str->list.data[0]->as<AstExprIfElse>();
|
||
REQUIRE(ifElseExpr != nullptr);
|
||
auto* nestedIfElseExpr = ifElseExpr->condition->as<AstExprIfElse>();
|
||
REQUIRE(nestedIfElseExpr != nullptr);
|
||
}
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "parse_type_pack_type_parameters")
|
||
{
|
||
AstStat* stat = parse(R"(
|
||
type Packed<T...> = () -> T...
|
||
|
||
type A<X...> = Packed<X...>
|
||
type B<X...> = Packed<...number>
|
||
type C<X...> = Packed<(number, X...)>
|
||
)");
|
||
REQUIRE(stat != nullptr);
|
||
}
|
||
|
||
TEST_CASE_FIXTURE(Fixture, "function_type_matching_parenthesis")
|
||
{
|
||
matchParseError("local a: <T>(number -> string", "Expected ')' (to close '(' at column 13), got '->'");
|
||
}
|
||
|
||
TEST_SUITE_END();
|