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// Copyright 2019 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_RUST_TOOL_H_
#define TOOLS_GN_RUST_TOOL_H_
#include <string>
#include <string_view>
#include "base/logging.h"
#include "gn/label.h"
#include "gn/label_ptr.h"
#include "gn/rust_values.h"
#include "gn/source_file.h"
#include "gn/substitution_list.h"
#include "gn/substitution_pattern.h"
#include "gn/target.h"
#include "gn/tool.h"
class RustTool : public Tool {
public:
// Rust tools
static const char* kRsToolBin;
static const char* kRsToolCDylib;
static const char* kRsToolDylib;
static const char* kRsToolMacro;
static const char* kRsToolRlib;
static const char* kRsToolStaticlib;
explicit RustTool(const char* n);
~RustTool();
// Manual RTTI and required functions ---------------------------------------
bool InitTool(Scope* block_scope, Toolchain* toolchain, Err* err);
bool ValidateName(const char* name) const override;
void SetComplete() override;
bool ValidateSubstitution(const Substitution* sub_type) const override;
bool MayLink() const;
RustTool* AsRust() override;
const RustTool* AsRust() const override;
std::string_view GetSysroot() const;
const std::string& dynamic_link_switch() const {
return dynamic_link_switch_;
}
void set_dynamic_link_switch(std::string s) {
DCHECK(!complete_);
dynamic_link_switch_ = std::move(s);
}
// Should match files in the outputs() if nonempty.
const SubstitutionPattern& link_output() const { return link_output_; }
void set_link_output(SubstitutionPattern link_out) {
DCHECK(!complete_);
link_output_ = std::move(link_out);
}
const SubstitutionPattern& depend_output() const { return depend_output_; }
void set_depend_output(SubstitutionPattern dep_out) {
DCHECK(!complete_);
depend_output_ = std::move(dep_out);
}
private:
std::string rust_sysroot_;
std::string dynamic_link_switch_;
bool SetOutputExtension(const Value* value, std::string* var, Err* err);
bool ReadOutputsPatternList(Scope* scope,
const char* var,
SubstitutionList* field,
Err* err);
// Initialization functions -------------------------------------------------
//
// Initialization methods used by InitTool(). If successful, will set the
// field and return true, otherwise will return false. Must be called before
// SetComplete().
bool ValidateRuntimeOutputs(Err* err);
// Validates either link_output or depend_output. To generalize to either,
// pass the associated pattern, and the variable name that should appear in
// error messages.
bool ValidateLinkAndDependOutput(const SubstitutionPattern& pattern,
const char* variable_name,
Err* err);
SubstitutionPattern link_output_;
SubstitutionPattern depend_output_;
RustTool(const RustTool&) = delete;
RustTool& operator=(const RustTool&) = delete;
};
#endif // TOOLS_GN_RUST_TOOL_H_