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Replaced std::exit() with return Carbon::ErrorOr for expected errors like invalid syntax (#1120)

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* Replaced std::exit() with return llvm::Expected/llvm::Error<T> for expected errors like invalid syntax.

* Use llvm::formatv() for formatting lexer error messages.
x

* Addresed merge errors.

* Fixed impl scope.

* Made ErrorBuilder::operator<< nodiscard, to catch code forgetting 'return' in 'return FATAL_COMPILATION_ERROR()'.

* FatalComplationError() -> ParseAndLexContext::RecordLexerError().
Other usages of ERROR_TOKEN in lexer.lpp were actually supposed to be END_OF_FILE.

* Update executable_semantics/syntax/parse_and_lex_context.h

Co-authored-by: Jon Meow <jperkins@google.com>

* Code review fixes.

* Update executable_semantics/syntax/parser.ypp

Co-authored-by: Jon Meow <jperkins@google.com>

* More code review fixes.

* Update executable_semantics/interpreter/type_checker.h

Co-authored-by: Jon Meow <jperkins@google.com>

* Yet more code review fixes...

* Update executable_semantics/syntax/lexer.lpp

Co-authored-by: Jon Meow <jperkins@google.com>

* code review comments

* Update executable_semantics/interpreter/interpreter.cpp

Co-authored-by: Geoff Romer <gromer@google.com>

* Apply suggestions from code review

Co-authored-by: Jon Meow <jperkins@google.com>

* Update executable_semantics/syntax/lexer.lpp

Co-authored-by: Jon Meow <jperkins@google.com>

* code review

* code review

* Apply suggestions from code review

Co-authored-by: Jon Meow <jperkins@google.com>

* formatted code

* review comments

* Switched to the new ErrorOr<V> error implementation

* code review comments

* fixed comment

* restored ostream.h as #976 makes the change unnecesary

* review comments

Co-authored-by: Jon Meow <jperkins@google.com>
Co-authored-by: Geoff Romer <gromer@google.com>
This commit is contained in:
pk19604014
2022-03-22 16:17:04 -04:00
committed by GitHub
co-authored by Jon Meow Geoff Romer
parent e5a87af6fe
commit aa8a5f174d
43 changed files with 1324 additions and 873 deletions
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executable_semantics/interpreter/heap.cpp
+16 -12
View File
@@ -6,6 +6,7 @@
#include "executable_semantics/common/error.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Error.h"
namespace Carbon {
@@ -21,26 +22,29 @@ auto Heap::AllocateValue(Nonnull<const Value*> v) -> AllocationId {
}
auto Heap::Read(const Address& a, SourceLocation source_loc) const
-> Nonnull<const Value*> {
this->CheckAlive(a.allocation_, source_loc);
-> ErrorOr<Nonnull<const Value*>> {
RETURN_IF_ERROR(this->CheckAlive(a.allocation_, source_loc));
return values_[a.allocation_.index_]->GetField(arena_, a.field_path_,
source_loc);
}
void Heap::Write(const Address& a, Nonnull<const Value*> v,
SourceLocation source_loc) {
this->CheckAlive(a.allocation_, source_loc);
values_[a.allocation_.index_] = values_[a.allocation_.index_]->SetField(
arena_, a.field_path_, v, source_loc);
auto Heap::Write(const Address& a, Nonnull<const Value*> v,
SourceLocation source_loc) -> ErrorOr<Success> {
RETURN_IF_ERROR(this->CheckAlive(a.allocation_, source_loc));
ASSIGN_OR_RETURN(values_[a.allocation_.index_],
values_[a.allocation_.index_]->SetField(
arena_, a.field_path_, v, source_loc));
return Success();
}
void Heap::CheckAlive(AllocationId allocation,
SourceLocation source_loc) const {
auto Heap::CheckAlive(AllocationId allocation, SourceLocation source_loc) const
-> ErrorOr<Success> {
if (!alive_[allocation.index_]) {
FATAL_RUNTIME_ERROR(source_loc)
<< "undefined behavior: access to dead value "
<< *values_[allocation.index_];
return FATAL_RUNTIME_ERROR(source_loc)
<< "undefined behavior: access to dead value "
<< *values_[allocation.index_];
}
return Success();
}
void Heap::Deallocate(AllocationId allocation) {