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exec_program.cpp
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exec_program.cpp
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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
#include "explorer/interpreter/exec_program.h"
#include <variant>
#include "common/check.h"
#include "common/ostream.h"
#include "explorer/common/arena.h"
#include "explorer/interpreter/interpreter.h"
#include "explorer/interpreter/resolve_control_flow.h"
#include "explorer/interpreter/resolve_names.h"
#include "explorer/interpreter/resolve_unformed.h"
#include "explorer/interpreter/type_checker.h"
#include "llvm/Support/Error.h"
namespace Carbon {
auto AnalyzeProgram(Nonnull<Arena*> arena, AST ast,
Nonnull<TraceStream*> trace_stream) -> ErrorOr<AST> {
if (trace_stream->is_enabled()) {
*trace_stream << "********** source program **********\n";
for (int i = ast.num_prelude_declarations;
i < static_cast<int>(ast.declarations.size()); ++i) {
*trace_stream << *ast.declarations[i];
}
}
SourceLocation source_loc("<Main()>", 0);
ast.main_call = arena->New<CallExpression>(
source_loc, arena->New<IdentifierExpression>(source_loc, "Main"),
arena->New<TupleLiteral>(source_loc));
// Although name resolution is currently done once, generic programming
// (particularly templates) may require more passes.
if (trace_stream->is_enabled()) {
*trace_stream << "********** resolving names **********\n";
}
CARBON_RETURN_IF_ERROR(ResolveNames(ast));
if (trace_stream->is_enabled()) {
*trace_stream << "********** resolving control flow **********\n";
}
CARBON_RETURN_IF_ERROR(ResolveControlFlow(ast));
if (trace_stream->is_enabled()) {
*trace_stream << "********** type checking **********\n";
}
CARBON_RETURN_IF_ERROR(TypeChecker(arena, trace_stream).TypeCheck(ast));
if (trace_stream->is_enabled()) {
*trace_stream << "********** resolving unformed variables **********\n";
}
CARBON_RETURN_IF_ERROR(ResolveUnformed(ast));
if (trace_stream->is_enabled()) {
*trace_stream << "********** printing declarations **********\n";
for (int i = ast.num_prelude_declarations;
i < static_cast<int>(ast.declarations.size()); ++i) {
*trace_stream << *ast.declarations[i];
}
}
return ast;
}
auto ExecProgram(Nonnull<Arena*> arena, AST ast,
Nonnull<TraceStream*> trace_stream) -> ErrorOr<int> {
if (trace_stream->is_enabled()) {
*trace_stream << "********** starting execution **********\n";
}
return InterpProgram(ast, arena, trace_stream);
}
} // namespace Carbon