diff options
Diffstat (limited to 'lib/CodeGen/FileHandler.cc')
| -rw-r--r-- | lib/CodeGen/FileHandler.cc | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/lib/CodeGen/FileHandler.cc b/lib/CodeGen/FileHandler.cc index f2e7824..ba32771 100644 --- a/lib/CodeGen/FileHandler.cc +++ b/lib/CodeGen/FileHandler.cc @@ -58,6 +58,21 @@ void FileHandler::setupGlobals() { ModeReadStr = Builder.CreateGlobalString("r", "file_mode_r", 0, &Module); ModeWriteStr = Builder.CreateGlobalString("w", "file_mode_w", 0, &Module); ModeAppendStr = Builder.CreateGlobalString("a", "file_mode_a", 0, &Module); + + ErrOpenFail = Builder.CreateGlobalString( + "[Fatal] line %d: Cannot open file '%s'\n", "err_file_open", 0, &Module); + ErrAlreadyOpen = Builder.CreateGlobalString( + "[Fatal] line %d: File '%s' is already open\n", "err_file_already_open", 0, &Module); + ErrTableFull = Builder.CreateGlobalString( + "[Fatal] line %d: Too many open files\n", "err_file_table_full", 0, &Module); + ErrNotOpen = Builder.CreateGlobalString( + "[Fatal] line %d: File '%s' is not open\n", "err_file_not_open", 0, &Module); + ErrNotRead = Builder.CreateGlobalString( + "[Fatal] line %d: File '%s' is not open for READ\n", "err_file_not_read", 0, &Module); + ErrNotWrite = Builder.CreateGlobalString( + "[Fatal] line %d: File '%s' is not open for WRITE\n", "err_file_not_write", 0, &Module); + ErrPastEof = Builder.CreateGlobalString( + "[Fatal] line %d: Read past end of file '%s'\n", "err_file_past_eof", 0, &Module); } void FileHandler::ensureRuntime() { @@ -95,11 +110,11 @@ Value *FileHandler::emitSlotGEP(GlobalVariable *Table, Type *ElemTy, Value *Idx) } // Shared prologue of every helper that operates on an already-open file: -// look the name up, throw on a miss, return the slot index. +// look the name up, report and throw on a miss, return the slot index. Value *FileHandler::emitLookupOrFail(Value *Name, Value *Line) { Value *Idx = Builder.CreateCall(FindFn, {Name}, "slot"); Value *NotOpen = Builder.CreateICmpSLT(Idx, ConstantInt::get(Context, APInt(64, 0)), "not_open"); - Checker.emitCheck(NotOpen); + Checker.emitCheck(NotOpen, ErrNotOpen, {Line, Name}); return Idx; } @@ -171,7 +186,7 @@ void FileHandler::buildOpenFn() { Value *Existing = Builder.CreateCall(FindFn, {Name}, "existing"); Value *AlreadyOpen = Builder.CreateICmpSGE(Existing, ConstantInt::get(Context, APInt(64, 0)), "already_open"); - Checker.emitCheck(AlreadyOpen); + Checker.emitCheck(AlreadyOpen, ErrAlreadyOpen, {Line, Name}); // First-free-slot scan; SlotVar stays -1 when the table is full. AllocaInst *IdxVar = Builder.CreateAlloca(I64, nullptr, "idx"); @@ -208,7 +223,7 @@ void FileHandler::buildOpenFn() { Builder.SetInsertPoint(AfterBB); Value *Slot = Builder.CreateLoad(I64, SlotVar, "free_slot"); Value *NoFree = Builder.CreateICmpSLT(Slot, ConstantInt::get(Context, APInt(64, 0)), "table_full"); - Checker.emitCheck(NoFree); + Checker.emitCheck(NoFree, ErrTableFull, {Line}); // Branch-free fopen-mode selection: 1 -> "r", 2 -> "w", 3 -> "a". Value *IsWrite = Builder.CreateICmpEQ(Mode, ConstantInt::get(I8, uint8_t(FileMode::Write))); @@ -218,7 +233,7 @@ void FileHandler::buildOpenFn() { Value *Handle = Builder.CreateCall(FopenFunc, {Name, ModeStr}, "handle"); Value *OpenFailed = Builder.CreateICmpEQ(Handle, ConstantPointerNull::get(PtrTy), "open_failed"); - Checker.emitCheck(OpenFailed); + Checker.emitCheck(OpenFailed, ErrOpenFail, {Line, Name}); Builder.CreateStore(Name, emitSlotGEP(FileNames, PtrTy, Slot)); Builder.CreateStore(Handle, emitSlotGEP(FileHandles, PtrTy, Slot)); @@ -244,13 +259,13 @@ void FileHandler::buildReadFn() { Value *Idx = emitLookupOrFail(Name, Line); Value *Mode = Builder.CreateLoad(I8, emitSlotGEP(FileModes, I8, Idx), "mode"); Value *NotRead = Builder.CreateICmpNE(Mode, ConstantInt::get(I8, uint8_t(FileMode::Read)), "not_read"); - Checker.emitCheck(NotRead); + Checker.emitCheck(NotRead, ErrNotRead, {Line, Name}); Value *Handle = Builder.CreateLoad(PtrTy, emitSlotGEP(FileHandles, PtrTy, Idx), "handle"); Value *MinusOne = ConstantInt::get(Context, APInt(32, -1, /*isSigned=*/true)); Value *Peek = Builder.CreateCall(FgetcFunc, {Handle}, "peek"); Value *AtEof = Builder.CreateICmpEQ(Peek, MinusOne, "at_eof"); - Checker.emitCheck(AtEof); + Checker.emitCheck(AtEof, ErrPastEof, {Line, Name}); Builder.CreateCall(UngetcFunc, {Peek, Handle}); // Growing buffer: cap doubles, always leaving room for byte + NUL. @@ -348,7 +363,7 @@ void FileHandler::buildWriteFn() { Value *Idx = emitLookupOrFail(Name, Line); Value *Mode = Builder.CreateLoad(I8, emitSlotGEP(FileModes, I8, Idx), "mode"); Value *IsReadMode = Builder.CreateICmpEQ(Mode, ConstantInt::get(I8, uint8_t(FileMode::Read)), "read_only"); - Checker.emitCheck(IsReadMode); + Checker.emitCheck(IsReadMode, ErrNotWrite, {Line, Name}); Value *Handle = Builder.CreateLoad(PtrTy, emitSlotGEP(FileHandles, PtrTy, Idx), "handle"); Builder.CreateCall(FputsFunc, {Data, Handle}); @@ -394,7 +409,7 @@ void FileHandler::buildEofFn() { Value *Idx = emitLookupOrFail(Name, Line); Value *Mode = Builder.CreateLoad(I8, emitSlotGEP(FileModes, I8, Idx), "mode"); Value *NotRead = Builder.CreateICmpNE(Mode, ConstantInt::get(I8, uint8_t(FileMode::Read)), "not_read"); - Checker.emitCheck(NotRead); + Checker.emitCheck(NotRead, ErrNotRead, {Line, Name}); Value *Handle = Builder.CreateLoad(PtrTy, emitSlotGEP(FileHandles, PtrTy, Idx), "handle"); Value *Ch = Builder.CreateCall(FgetcFunc, {Handle}, "c"); |