| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef TOOLS_GN_SOURCE_FILE_H_ |
| #define TOOLS_GN_SOURCE_FILE_H_ |
| |
| #include <stddef.h> |
| |
| #include <algorithm> |
| #include <string> |
| #include <string_view> |
| |
| #include "base/files/file_path.h" |
| #include "base/logging.h" |
| |
| class SourceDir; |
| |
| // Represents a file within the source tree. Always begins in a slash, never |
| // ends in one. |
| class SourceFile { |
| public: |
| // This should be sequential integers starting from 0 so they can be used as |
| // array indices. |
| enum Type { |
| SOURCE_UNKNOWN = 0, |
| SOURCE_ASM, |
| SOURCE_C, |
| SOURCE_CPP, |
| SOURCE_H, |
| SOURCE_M, |
| SOURCE_MM, |
| SOURCE_S, |
| SOURCE_RC, |
| SOURCE_O, // Object files can be inputs, too. Also counts .obj. |
| SOURCE_DEF, |
| |
| SOURCE_RS, |
| SOURCE_GO, |
| |
| // Must be last. |
| SOURCE_NUMTYPES, |
| }; |
| |
| SourceFile() = default; |
| |
| // Takes a known absolute source file. Always begins in a slash. |
| explicit SourceFile(const std::string& value); |
| explicit SourceFile(std::string&& value); |
| |
| ~SourceFile() = default; |
| |
| bool is_null() const { return value_.empty(); } |
| const std::string& value() const { return value_; } |
| Type type() const { return type_; } |
| |
| // Returns everything after the last slash. |
| std::string GetName() const; |
| SourceDir GetDir() const; |
| |
| // Resolves this source file relative to some given source root. Returns |
| // an empty file path on error. |
| base::FilePath Resolve(const base::FilePath& source_root) const; |
| |
| // Returns true if this file starts with a "//" which indicates a path |
| // from the source root. |
| bool is_source_absolute() const { |
| return value_.size() >= 2 && value_[0] == '/' && value_[1] == '/'; |
| } |
| |
| // Returns true if this file starts with a single slash which indicates a |
| // system-absolute path. |
| bool is_system_absolute() const { return !is_source_absolute(); } |
| |
| // Returns a source-absolute path starting with only one slash at the |
| // beginning (normally source-absolute paths start with two slashes to mark |
| // them as such). This is normally used when concatenating names together. |
| // |
| // This function asserts that the file is actually source-absolute. The |
| // return value points into our buffer. |
| std::string_view SourceAbsoluteWithOneSlash() const { |
| CHECK(is_source_absolute()); |
| return std::string_view(&value_[1], value_.size() - 1); |
| } |
| |
| bool operator==(const SourceFile& other) const { |
| return value_ == other.value_; |
| } |
| bool operator!=(const SourceFile& other) const { return !operator==(other); } |
| bool operator<(const SourceFile& other) const { |
| return value_ < other.value_; |
| } |
| |
| private: |
| friend class SourceDir; |
| |
| void SetValue(const std::string& value); |
| |
| std::string value_; |
| Type type_ = SOURCE_UNKNOWN; |
| }; |
| |
| namespace std { |
| |
| template <> |
| struct hash<SourceFile> { |
| std::size_t operator()(const SourceFile& v) const { |
| hash<std::string> h; |
| return h(v.value()); |
| } |
| }; |
| |
| } // namespace std |
| |
| // Represents a set of tool types. |
| class SourceFileTypeSet { |
| public: |
| SourceFileTypeSet(); |
| |
| void Set(SourceFile::Type type) { |
| flags_[static_cast<int>(type)] = true; |
| empty_ = false; |
| } |
| bool Get(SourceFile::Type type) const { |
| return flags_[static_cast<int>(type)]; |
| } |
| |
| bool empty() const { return empty_; } |
| |
| bool CSourceUsed() const; |
| bool RustSourceUsed() const; |
| bool GoSourceUsed() const; |
| |
| bool MixedSourceUsed() const; |
| |
| private: |
| bool empty_; |
| bool flags_[static_cast<int>(SourceFile::SOURCE_NUMTYPES)]; |
| }; |
| |
| #endif // TOOLS_GN_SOURCE_FILE_H_ |