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// Copyright 2015 Google Inc. All rights reserved
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build ignore
#include "exec.h"
#include <stdio.h>
#include <stdlib.h>
#include <memory>
#include <unordered_map>
#include <utility>
#include <vector>
#include "command.h"
#include "dep.h"
#include "eval.h"
#include "fileutil.h"
#include "flags.h"
#include "log.h"
#include "string_piece.h"
#include "strutil.h"
#include "symtab.h"
#include "value.h"
#include "var.h"
namespace {
class Executor {
public:
explicit Executor(Evaluator* ev)
: ce_(ev) {
}
void ExecNode(DepNode* n, DepNode* needed_by UNUSED) {
if (done_[n->output])
return;
done_[n->output] = true;
LOG("ExecNode: %s for %s",
n->output.c_str(),
needed_by ? needed_by->output.c_str() : "(null)");
for (DepNode* d : n->deps) {
if (d->is_order_only && Exists(d->output.str())) {
continue;
}
// TODO: Check the timestamp.
if (Exists(d->output.str())) {
continue;
}
ExecNode(d, n);
}
vector<Command*> commands;
ce_.Eval(n, &commands);
for (Command* command : commands) {
if (command->echo) {
printf("%s\n", command->cmd->c_str());
fflush(stdout);
}
if (!g_is_dry_run) {
int result = system(command->cmd->c_str());
if (result != 0) {
if (command->ignore_error) {
fprintf(stderr, "[%s] Error %d (ignored)\n",
command->output.c_str(), WEXITSTATUS(result));
} else {
fprintf(stderr, "*** [%s] Error %d\n",
command->output.c_str(), WEXITSTATUS(result));
exit(1);
}
}
}
delete command;
}
}
private:
CommandEvaluator ce_;
unordered_map<Symbol, bool> done_;
};
} // namespace
void Exec(const vector<DepNode*>& roots, Evaluator* ev) {
unique_ptr<Executor> executor(new Executor(ev));
for (DepNode* root : roots) {
executor->ExecNode(root, NULL);
}
}
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