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/parse_tree.h"
  10 #include "tools/gn/scope.h"
  11 #include "tools/gn/value.h"
  12
  13 CopyTargetGenerator::CopyTargetGenerator(Target* target,
  14                                          Scope* scope,
  15                                          const FunctionCallNode* function_call,
  16                                          Err* err)
  17     : TargetGenerator(target, scope, function_call, err) {
  18 }
  19
  20 CopyTargetGenerator::~CopyTargetGenerator() {
  21 }
  22
  23 void CopyTargetGenerator::DoRun() {
  24   target_->set_output_type(Target::COPY_FILES);
  25
  26   FillExternal();
  27   if (err_->has_error())
  28     return;
  29   FillSources();
  30   if (err_->has_error())
  31     return;
  32   FillOutputs();
  33   if (err_->has_error())
  34     return;
  35
  36   if (target_->sources().empty()) {
  37     *err_ = Err(function_call_, "Empty sources for copy command.",
  38         "You have to specify at least one file to copy in the \"sources\".");
  39     return;
  40   }
  41   if (target_->script_values().outputs().size() != 1) {
  42     *err_ = Err(function_call_, "Copy command must have exactly one output.",
  43         "You must specify exactly one value in the \"outputs\" array for the "
  44         "destination of the copy\n(see \"gn help copy\"). If there are "
  45         "multiple sources to copy, use source expansion\n(see \"gn help "
  46         "source_expansion\").");
  47     return;
  48   }
  49 }