Files
carbon-lang/executable_semantics/interpreter/exec_program.h
T
Jon Meow b87747306f Add the ability to pipe trace output to a file. (#1183)
Breaks `--trace` into two flags:

- `--parser_debug`, which sets the parser debug level (which I haven't dug into piping with `--trace`, but seemed likely to be troublesome)
- `--trace_file`, which now the type checker and interpreter will use for trace information (note compile errors should use a different channel)

Most of the file edits are just mechanical testdata flag updates: `sed -i 's/--trace/--parser_debug --trace_file=-/' testdata/**/*.carbon`

To explain the output paths:

- parse/compile errors: stderr
- print() calls: stdout
- parser tracing: `--parser_debug` option, stdout (formerly stdout if `--trace`)
- type check/compile tracing: `--trace_file=<file>`, giving `-` uses stdout (formerly stdout if `--trace`)
- return code of executed Carbon code: `--trace_file` if set, stdout if not (formerly stdout always)
2022-04-14 11:20:56 -07:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Helpers should be added here when logic in syntax.ypp is more than a single
// statement. The intent is to minimize the amount of C++ in the .ypp file, to
// improve ease of maintenance.
#ifndef EXECUTABLE_SEMANTICS_INTERPRETER_EXEC_PROGRAM_H_
#define EXECUTABLE_SEMANTICS_INTERPRETER_EXEC_PROGRAM_H_
#include "executable_semantics/ast/ast.h"
#include "llvm/Support/raw_ostream.h"
namespace Carbon {
// Runs the top-level declaration list.
auto ExecProgram(Nonnull<Arena*> arena, AST ast,
std::optional<Nonnull<llvm::raw_ostream*>> trace_stream)
-> ErrorOr<int>;
} // namespace Carbon
#endif // EXECUTABLE_SEMANTICS_INTERPRETER_EXEC_PROGRAM_H_