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aa8a5f174d
* 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>
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <unistd.h>
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#include <cstdio>
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#include <cstring>
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#include <iostream>
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#include <string>
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#include <vector>
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#include "common/error.h"
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#include "executable_semantics/common/arena.h"
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#include "executable_semantics/common/nonnull.h"
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#include "executable_semantics/interpreter/exec_program.h"
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#include "executable_semantics/syntax/parse.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/InitLLVM.h"
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// Adds the Carbon prelude to `declarations`.
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static void AddPrelude(
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std::string_view prelude_file_name, Carbon::Nonnull<Carbon::Arena*> arena,
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std::vector<Carbon::Nonnull<Carbon::Declaration*>>* declarations) {
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Carbon::ErrorOr<Carbon::AST> parse_result =
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Carbon::Parse(arena, prelude_file_name, false);
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if (!parse_result.ok()) {
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// Try again with tracing, to help diagnose the problem.
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Carbon::ErrorOr<Carbon::AST> trace_parse_result =
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Carbon::Parse(arena, prelude_file_name, true);
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FATAL() << "Failed to parse prelude: "
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<< trace_parse_result.error().message();
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}
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const auto& prelude = *parse_result;
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declarations->insert(declarations->begin(), prelude.declarations.begin(),
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prelude.declarations.end());
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}
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// Prints an error message and returns error code value.
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auto PrintError(const Carbon::Error& error) -> int {
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llvm::errs() << error.message() << "\n";
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return EXIT_FAILURE;
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}
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auto main(int argc, char* argv[]) -> int {
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llvm::setBugReportMsg(
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"Please report issues to "
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"https://github.com/carbon-language/carbon-lang/issues and include the "
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"crash backtrace.\n");
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llvm::InitLLVM init_llvm(argc, argv);
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// Printing to stderr should flush stdout. This is most noticeable when stderr
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// is piped to stdout.
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llvm::errs().tie(&llvm::outs());
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using llvm::cl::desc;
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using llvm::cl::opt;
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opt<bool> trace_option("trace", desc("Enable tracing"));
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opt<std::string> input_file_name(llvm::cl::Positional, desc("<input file>"),
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llvm::cl::Required);
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opt<std::string> prelude_file_name(
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"prelude", desc("<prelude file>"),
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llvm::cl::init("executable_semantics/data/prelude.carbon"));
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llvm::cl::ParseCommandLineOptions(argc, argv);
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Carbon::Arena arena;
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Carbon::ErrorOr<Carbon::AST> ast =
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Carbon::Parse(&arena, input_file_name, trace_option);
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if (!ast.ok()) {
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return PrintError(ast.error());
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}
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AddPrelude(prelude_file_name, &arena, &ast->declarations);
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// Typecheck and run the parsed program.
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Carbon::ErrorOr<int> result = Carbon::ExecProgram(&arena, *ast, trace_option);
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if (!result.ok()) {
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return PrintError(result.error());
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}
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}
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