tools/gn/copy_target_generator.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "tools/gn/copy_target_generator.h"
   6
   7 #include "tools/gn/build_settings.h"
   8 #include "tools/gn/filesystem_utils.h"
   9 #include "tools/gn/scope.h"
  10 #include "tools/gn/value.h"
  11
  12 CopyTargetGenerator::CopyTargetGenerator(Target* target,
  13                                          Scope* scope,
  14                                          const Token& function_token,
  15                                          Err* err)
  16     : TargetGenerator(target, scope, function_token, err) {
  17 }
  18
  19 CopyTargetGenerator::~CopyTargetGenerator() {
  20 }
  21
  22 void CopyTargetGenerator::DoRun() {
  23   target_->set_output_type(Target::COPY_FILES);
  24
  25   FillExternal();
  26   if (err_->has_error())
  27     return;
  28   FillSources();
  29   if (err_->has_error())
  30     return;
  31   FillOutputs();
  32   if (err_->has_error())
  33     return;
  34
  35   if (target_->sources().empty()) {
  36     *err_ = Err(function_token_, "Empty sources for copy command.",
  37         "You have to specify at least one file to copy in the \"sources\".");
  38     return;
  39   }
  40   if (target_->script_values().outputs().size() != 1) {
  41     *err_ = Err(function_token_, "Copy command must have exactly one output.",
  42         "You must specify exactly one value in the \"outputs\" array for the "
  43         "destination of the copy\n(see \"gn help copy\"). If there are "
  44         "multiple sources to copy, use source expansion\n(see \"gn help "
  45         "source_expansion\").");
  46     return;
  47   }
  48
  49   SetToolchainDependency();
  50 }