CMake/Source/cmGlobalNinjaGenerator.h

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2011-11-11 09:00:49 +04:00
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2011 Peter Collingbourne <peter@pcc.me.uk>
Copyright 2011 Nicolas Despres <nicolas.despres@gmail.com>
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmGlobalNinjaGenerator_h
# define cmGlobalNinjaGenerator_h
# include "cmGlobalGenerator.h"
# include "cmNinjaTypes.h"
class cmLocalGenerator;
class cmGeneratedFileStream;
/**
* \class cmGlobalNinjaGenerator
* \brief Write a build.ninja file.
*
* The main differences between this generator and the UnixMakefile
* generator family are:
* - We don't care about VERBOSE variable or RULE_MESSAGES property since
* it is handle by Ninja's -v option.
* - We don't care about computing any progress status since Ninja manages
* it itself.
* - We don't care about generating a clean target since Ninja already have
* a clean tool.
* - We generate one build.ninja and one rules.ninja per project.
* - We try to minimize the number of generated rules: one per target and
* language.
* - We use Ninja special variable $in and $out to produce nice output.
* - We extensively use Ninja variable overloading system to minimize the
* number of generated rules.
*/
class cmGlobalNinjaGenerator : public cmGlobalGenerator
{
public:
/// The default name of Ninja's build file. Typically: build.ninja.
static const char* NINJA_BUILD_FILE;
/// The default name of Ninja's rules file. Typically: rules.ninja.
/// It is included in the main build.ninja file.
static const char* NINJA_RULES_FILE;
/// The indentation string used when generating Ninja's build file.
static const char* INDENT;
/// Write @a count times INDENT level to output stream @a os.
static void Indent(std::ostream& os, int count);
/// Write a divider in the given output stream @a os.
static void WriteDivider(std::ostream& os);
static std::string EncodeIdent(const std::string &ident, std::ostream &vars);
static std::string EncodeLiteral(const std::string &lit);
/**
* Write the given @a comment to the output stream @a os. It
* handles new line character properly.
*/
static void WriteComment(std::ostream& os, const std::string& comment);
/**
* Write a build statement to @a os with the @a comment using
* the @a rule the list of @a outputs files and inputs.
* It also writes the variables bound to this build statement.
* @warning no escaping of any kind is done here.
*/
static void WriteBuild(std::ostream& os,
const std::string& comment,
const std::string& rule,
const cmNinjaDeps& outputs,
const cmNinjaDeps& explicitDeps,
const cmNinjaDeps& implicitDeps,
const cmNinjaDeps& orderOnlyDeps,
const cmNinjaVars& variables);
/**
* Helper to write a build statement with the special 'phony' rule.
*/
static void WritePhonyBuild(std::ostream& os,
const std::string& comment,
const cmNinjaDeps& outputs,
const cmNinjaDeps& explicitDeps,
const cmNinjaDeps& implicitDeps = cmNinjaDeps(),
const cmNinjaDeps& orderOnlyDeps = cmNinjaDeps(),
const cmNinjaVars& variables = cmNinjaVars());
void WriteCustomCommandBuild(const std::string& command,
const std::string& description,
const std::string& comment,
const cmNinjaDeps& outputs,
const cmNinjaDeps& deps = cmNinjaDeps(),
const cmNinjaDeps& orderOnlyDeps = cmNinjaDeps());
/**
* Write a rule statement named @a name to @a os with the @a comment,
* the mandatory @a command, the @a depfile and the @a description.
* It also writes the variables bound to this rule statement.
* @warning no escaping of any kind is done here.
*/
static void WriteRule(std::ostream& os,
const std::string& name,
const std::string& command,
const std::string& description,
const std::string& comment = "",
const std::string& depfile = "",
bool restat = false,
bool generator = false);
/**
* Write a variable named @a name to @a os with value @a value and an
* optional @a comment. An @a indent level can be specified.
* @warning no escaping of any kind is done here.
*/
static void WriteVariable(std::ostream& os,
const std::string& name,
const std::string& value,
const std::string& comment = "",
int indent = 0);
/**
* Write an include statement including @a filename with an optional
* @a comment to the @a os stream.
*/
static void WriteInclude(std::ostream& os,
const std::string& filename,
const std::string& comment = "");
/**
* Write a default target statement specifying @a targets as
* the default targets.
*/
static void WriteDefault(std::ostream& os,
const cmNinjaDeps& targets,
const std::string& comment = "");
public:
/// Default constructor.
cmGlobalNinjaGenerator();
/// Convenience method for creating an instance of this class.
static cmGlobalGenerator* New() {
return new cmGlobalNinjaGenerator; }
/// Destructor.
virtual ~cmGlobalNinjaGenerator() { }
/// Overloaded methods. @see cmGlobalGenerator::CreateLocalGenerator()
virtual cmLocalGenerator* CreateLocalGenerator();
/// Overloaded methods. @see cmGlobalGenerator::GetName().
virtual const char* GetName() const {
return cmGlobalNinjaGenerator::GetActualName(); }
/// @return the name of this generator.
static const char* GetActualName() { return "Ninja"; }
/// Overloaded methods. @see cmGlobalGenerator::GetDocumentation()
virtual void GetDocumentation(cmDocumentationEntry& entry) const;
/// Overloaded methods. @see cmGlobalGenerator::Generate()
virtual void Generate();
/// Overloaded methods. @see cmGlobalGenerator::EnableLanguage()
virtual void EnableLanguage(std::vector<std::string>const& languages,
cmMakefile* mf,
bool optional);
/// Overloaded methods. @see cmGlobalGenerator::GenerateBuildCommand()
virtual std::string GenerateBuildCommand(const char* makeProgram,
const char* projectName,
const char* additionalOptions,
const char* targetName,
const char* config,
bool ignoreErrors,
bool fast);
// Setup target names
virtual const char* GetAllTargetName() const { return "all"; }
virtual const char* GetInstallTargetName() const { return "install"; }
virtual const char* GetInstallLocalTargetName() const {
return "install/local";
}
virtual const char* GetInstallStripTargetName() const {
return "install/strip";
}
virtual const char* GetTestTargetName() const { return "test"; }
virtual const char* GetPackageTargetName() const { return "package"; }
virtual const char* GetPackageSourceTargetName() const {
return "package_source";
}
virtual const char* GetEditCacheTargetName() const {
return "edit_cache";
}
virtual const char* GetRebuildCacheTargetName() const {
return "rebuild_cache";
}
virtual const char* GetCleanTargetName() const { return "clean"; }
public:
cmGeneratedFileStream* GetBuildFileStream() const
{ return this->BuildFileStream; }
cmGeneratedFileStream* GetRulesFileStream() const
{ return this->RulesFileStream; }
/**
* Add a rule to the generated build system.
* Call WriteRule() behind the scene but perform some check before like:
* - Do not add twice the same rule.
*/
void AddRule(const std::string& name,
const std::string& command,
const std::string& description,
const std::string& comment = "",
const std::string& depfile = "",
bool restat = false,
bool generator = false);
bool HasRule(const std::string& name);
void AddCustomCommandRule();
protected:
/// Overloaded methods.
/// @see cmGlobalGenerator::CheckALLOW_DUPLICATE_CUSTOM_TARGETS()
virtual bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() { return true; }
private:
// In order to access the AddDependencyToAll() functions and co.
friend class cmLocalNinjaGenerator;
// In order to access the SeenCustomCommand() function.
friend class cmNinjaTargetGenerator;
friend class cmNinjaNormalTargetGenerator;
friend class cmNinjaUtilityTargetGenerator;
private:
void OpenBuildFileStream();
void CloseBuildFileStream();
void OpenRulesFileStream();
void CloseRulesFileStream();
/// Write the common disclaimer text at the top of each build file.
void WriteDisclaimer(std::ostream& os);
void AddDependencyToAll(cmTarget* target);
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void WriteAssumedSourceDependencies();
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void AppendTargetOutputs(cmTarget* target, cmNinjaDeps& outputs);
void AppendTargetDepends(cmTarget* target, cmNinjaDeps& outputs);
void AddTargetAlias(const std::string& alias, cmTarget* target);
void WriteTargetAliases(std::ostream& os);
void WriteBuiltinTargets(std::ostream& os);
void WriteTargetAll(std::ostream& os);
void WriteTargetRebuildManifest(std::ostream& os);
/// Called when we have seen the given custom command. Returns true
/// if we has seen it before.
bool SeenCustomCommand(cmCustomCommand *cc) {
return !this->CustomCommands.insert(cc).second;
}
/// Called when we have seen the given custom command output.
void SeenCustomCommandOutput(const std::string &output) {
this->CustomCommandOutputs.insert(output);
// We don't need the assumed dependencies anymore, because we have
// an output.
this->AssumedSourceDependencies.erase(output);
}
bool HasCustomCommandOutput(const std::string &output) {
return this->CustomCommandOutputs.find(output) !=
this->CustomCommandOutputs.end();
}
void AddAssumedSourceDependencies(const std::string &source,
const cmNinjaDeps &deps) {
std::set<std::string> &ASD = this->AssumedSourceDependencies[source];
// Because we may see the same source file multiple times (same source
// specified in multiple targets), compute the union of any assumed
// dependencies.
ASD.insert(deps.begin(), deps.end());
}
private:
/// The file containing the build statement. (the relation ship of the
/// compilation DAG).
cmGeneratedFileStream* BuildFileStream;
/// The file containing the rule statements. (The action attached to each
/// edge of the compilation DAG).
cmGeneratedFileStream* RulesFileStream;
/// The type used to store the set of rules added to the generated build
/// system.
typedef std::set<std::string> RulesSetType;
/// The set of rules added to the generated build system.
RulesSetType Rules;
/// The set of dependencies to add to the "all" target.
cmNinjaDeps AllDependencies;
/// The set of custom commands we have seen.
std::set<cmCustomCommand *> CustomCommands;
/// The set of custom command outputs we have seen.
std::set<std::string> CustomCommandOutputs;
/// The mapping from source file to assumed dependencies.
std::map<std::string, std::set<std::string> > AssumedSourceDependencies;
typedef std::map<std::string, cmTarget*> TargetAliasMap;
TargetAliasMap TargetAliases;
};
#endif // ! cmGlobalNinjaGenerator_h