mirror of
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115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "tools/gn/visibility.h"
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#include <memory>
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#include "base/strings/string_piece.h"
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#include "base/strings/string_util.h"
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#include "base/values.h"
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#include "tools/gn/err.h"
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#include "tools/gn/filesystem_utils.h"
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#include "tools/gn/item.h"
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#include "tools/gn/label.h"
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#include "tools/gn/scope.h"
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#include "tools/gn/value.h"
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#include "tools/gn/variables.h"
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Visibility::Visibility() = default;
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Visibility::~Visibility() = default;
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bool Visibility::Set(const SourceDir& current_dir,
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const Value& value,
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Err* err) {
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patterns_.clear();
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if (!value.VerifyTypeIs(Value::LIST, err)) {
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CHECK(err->has_error());
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return false;
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}
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for (const auto& item : value.list_value()) {
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patterns_.push_back(LabelPattern::GetPattern(current_dir, item, err));
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if (err->has_error())
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return false;
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}
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return true;
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}
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void Visibility::SetPublic() {
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patterns_.clear();
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patterns_.push_back(
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LabelPattern(LabelPattern::RECURSIVE_DIRECTORY, SourceDir(),
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std::string(), Label()));
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}
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void Visibility::SetPrivate(const SourceDir& current_dir) {
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patterns_.clear();
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patterns_.push_back(
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LabelPattern(LabelPattern::DIRECTORY, current_dir, std::string(),
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Label()));
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}
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bool Visibility::CanSeeMe(const Label& label) const {
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return LabelPattern::VectorMatches(patterns_, label);
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}
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std::string Visibility::Describe(int indent, bool include_brackets) const {
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std::string outer_indent_string(indent, ' ');
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if (patterns_.empty())
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return outer_indent_string + "[] (no visibility)\n";
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std::string result;
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std::string inner_indent_string = outer_indent_string;
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if (include_brackets) {
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result += outer_indent_string + "[\n";
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// Indent the insides more if brackets are requested.
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inner_indent_string += " ";
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}
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for (const auto& pattern : patterns_)
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result += inner_indent_string + pattern.Describe() + "\n";
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if (include_brackets)
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result += outer_indent_string + "]\n";
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return result;
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}
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std::unique_ptr<base::Value> Visibility::AsValue() const {
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auto res = std::make_unique<base::ListValue>();
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for (const auto& pattern : patterns_)
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res->AppendString(pattern.Describe());
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return std::move(res);
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}
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// static
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bool Visibility::CheckItemVisibility(const Item* from,
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const Item* to,
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Err* err) {
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if (!to->visibility().CanSeeMe(from->label())) {
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std::string to_label = to->label().GetUserVisibleName(false);
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*err = Err(from->defined_from(), "Dependency not allowed.",
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"The item " + from->label().GetUserVisibleName(false) + "\n"
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"can not depend on " + to_label + "\n"
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"because it is not in " + to_label + "'s visibility list: " +
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to->visibility().Describe(0, true));
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return false;
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}
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return true;
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}
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// static
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bool Visibility::FillItemVisibility(Item* item, Scope* scope, Err* err) {
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const Value* vis_value = scope->GetValue(variables::kVisibility, true);
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if (vis_value)
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item->visibility().Set(scope->GetSourceDir(), *vis_value, err);
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else // Default to public.
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item->visibility().SetPublic();
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return !err->has_error();
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}
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