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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/ast/declaration.h
+13 -5
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@@ -82,20 +82,29 @@ class FunctionDeclaration : public Declaration {
public:
using ImplementsCarbonValueNode = void;
static auto Create(Nonnull<Arena*> arena, SourceLocation source_loc,
std::string name,
std::vector<Nonnull<AstNode*>> deduced_params,
std::optional<Nonnull<BindingPattern*>> me_pattern,
Nonnull<TuplePattern*> param_pattern,
ReturnTerm return_term,
std::optional<Nonnull<Block*>> body)
-> ErrorOr<Nonnull<FunctionDeclaration*>>;
// Use `Create()` instead. This is public only so Arena::New() can call it.
FunctionDeclaration(SourceLocation source_loc, std::string name,
std::vector<Nonnull<AstNode*>> deduced_params,
std::vector<Nonnull<GenericBinding*>> deduced_params,
std::optional<Nonnull<BindingPattern*>> me_pattern,
Nonnull<TuplePattern*> param_pattern,
ReturnTerm return_term,
std::optional<Nonnull<Block*>> body)
: Declaration(AstNodeKind::FunctionDeclaration, source_loc),
name_(std::move(name)),
deduced_parameters_(std::move(deduced_params)),
me_pattern_(me_pattern),
param_pattern_(param_pattern),
return_term_(return_term),
body_(body) {
ResolveDeducedAndReceiver(deduced_params);
}
body_(body) {}
static auto classof(const AstNode* node) -> bool {
return InheritsFromFunctionDeclaration(node->kind());
@@ -135,7 +144,6 @@ class FunctionDeclaration : public Declaration {
auto is_method() const -> bool { return me_pattern_.has_value(); }
private:
void ResolveDeducedAndReceiver(const std::vector<Nonnull<AstNode*>>&);
std::string name_;
std::vector<Nonnull<GenericBinding*>> deduced_parameters_;
std::optional<Nonnull<BindingPattern*>> me_pattern_;