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      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/config_values_generator.h"
      6 
      7 #include "tools/gn/config_values.h"
      8 #include "tools/gn/scope.h"
      9 #include "tools/gn/settings.h"
     10 #include "tools/gn/value.h"
     11 #include "tools/gn/value_extractors.h"
     12 #include "tools/gn/variables.h"
     13 
     14 namespace {
     15 
     16 void GetStringList(
     17     Scope* scope,
     18     const char* var_name,
     19     ConfigValues* config_values,
     20     std::vector<std::string>& (ConfigValues::* accessor)(),
     21     Err* err) {
     22   const Value* value = scope->GetValue(var_name, true);
     23   if (!value)
     24     return;  // No value, empty input and succeed.
     25 
     26   std::vector<std::string> result;
     27   ExtractListOfStringValues(*value, &result, err);
     28   (config_values->*accessor)().swap(result);
     29 }
     30 
     31 void GetDirList(
     32     Scope* scope,
     33     const char* var_name,
     34     ConfigValues* config_values,
     35     const SourceDir input_dir,
     36     std::vector<SourceDir>& (ConfigValues::* accessor)(),
     37     Err* err) {
     38   const Value* value = scope->GetValue(var_name, true);
     39   if (!value)
     40     return;  // No value, empty input and succeed.
     41 
     42   std::vector<SourceDir> result;
     43   ExtractListOfRelativeDirs(scope->settings()->build_settings(),
     44                             *value, input_dir, &result, err);
     45   (config_values->*accessor)().swap(result);
     46 }
     47 
     48 }  // namespace
     49 
     50 ConfigValuesGenerator::ConfigValuesGenerator(
     51     ConfigValues* dest_values,
     52     Scope* scope,
     53     const SourceDir& input_dir,
     54     Err* err)
     55     : config_values_(dest_values),
     56       scope_(scope),
     57       input_dir_(input_dir),
     58       err_(err) {
     59 }
     60 
     61 ConfigValuesGenerator::~ConfigValuesGenerator() {
     62 }
     63 
     64 void ConfigValuesGenerator::Run() {
     65 #define FILL_STRING_CONFIG_VALUE(name) \
     66     GetStringList(scope_, #name, config_values_, &ConfigValues::name, err_);
     67 #define FILL_DIR_CONFIG_VALUE(name) \
     68     GetDirList(scope_, #name, config_values_, input_dir_, \
     69                &ConfigValues::name, err_);
     70 
     71   FILL_STRING_CONFIG_VALUE(cflags)
     72   FILL_STRING_CONFIG_VALUE(cflags_c)
     73   FILL_STRING_CONFIG_VALUE(cflags_cc)
     74   FILL_STRING_CONFIG_VALUE(cflags_objc)
     75   FILL_STRING_CONFIG_VALUE(cflags_objcc)
     76   FILL_STRING_CONFIG_VALUE(defines)
     77   FILL_DIR_CONFIG_VALUE(   include_dirs)
     78   FILL_STRING_CONFIG_VALUE(ldflags)
     79   FILL_DIR_CONFIG_VALUE(   lib_dirs)
     80   FILL_STRING_CONFIG_VALUE(libs)
     81 
     82 #undef FILL_STRING_CONFIG_VALUE
     83 #undef FILL_DIR_CONFIG_VALUE
     84 }
     85