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#pragma once
#include <string>
#include <unordered_map>
#include <stdexcept>
#include <vector>
namespace ninja
{
enum class NinjaError
{
NONE,
VARIABLE_ALREADY_DEFINED,
RULE_ALREADY_DEFINED,
RULE_AREADY_BUILT
};
class NinjaException : public std::runtime_error
{
public:
NinjaException(const NinjaError _errorCode, const std::string &errMsg = "") :
std::runtime_error(errMsg),
errorCode(_errorCode)
{
}
const NinjaError errorCode;
};
struct NinjaVariable
{
const std::string name;
};
class NinjaBuildFile;
class NinjaArg
{
public:
enum class Type
{
NONE,
VALUE,
VARIABLE
};
NinjaArg() : type(Type::NONE) {}
NinjaArg(const std::string &value) : type(Type::VALUE), arg(value) {}
NinjaArg(const NinjaVariable &var) : type(Type::VARIABLE), arg(var.name) {}
Type type;
std::string arg;
};
struct NinjaArgValue
{
const NinjaVariable arg;
const std::string value;
};
// Functions throw NinjaException on failure
class NinjaRule
{
public:
NinjaRule(NinjaBuildFile *buildFile, const std::string &name, const std::string &command);
void build(const std::string &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs);
const std::string name;
const std::string command;
std::string depFile;
private:
NinjaBuildFile *buildFile;
};
struct NinjaBuild
{
const NinjaRule *rule;
const std::string in;
const std::string out;
const std::vector<ninja::NinjaArgValue> additionalArgs;
};
// Functions throw NinjaException on failure
class NinjaBuildFile
{
public:
~NinjaBuildFile();
void defineGlobalVariable(const std::string &name, const std::string &value);
NinjaRule* createRule(const std::string &name, const std::vector<NinjaArg> &commandArgs);
void build(const NinjaRule *rule, const std::string &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs);
std::string generate() const;
private:
std::unordered_map<std::string, std::string> globalVariables;
std::unordered_map<std::string, NinjaRule*> rules;
std::vector<NinjaBuild> builds;
};
}
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