view gen/cl_helpers.h @ 1508:e1e93343fc11

Move function codegen data from IrFunction to new FuncGen. This change reduces memory consumption significantly by releasing the memory held by the STL containers that are now inside FuncGen.
author Christian Kamm <kamm incasoftware de>
date Sat, 20 Jun 2009 19:11:44 +0200
parents 3171f67ad006
children 40bd4a0d4870
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#ifndef LDC_CL_HELPERS_H
#define LDC_CL_HELPERS_H

#include <string>

#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"

struct Array;

namespace opts {
    namespace cl = llvm::cl;
    
    /// Helper class for fancier options
    class FlagParser : public cl::parser<bool> {
        std::vector<std::pair<std::string, bool> > switches;
    public:
        template <class Opt>
        void initialize(Opt &O) {
            std::string Name = O.ArgStr;
            switches.push_back(make_pair("enable-" + Name, true));
            switches.push_back(make_pair("disable-" + Name, false));
            // Replace <foo> with -enable-<foo>
            O.ArgStr = switches[0].first.c_str();
        }
        
        bool parse(cl::Option &O, const char *ArgName, const std::string &ArgValue, bool &Val);
        
        void getExtraOptionNames(std::vector<const char*> &Names);
    };
    
    /// Helper class for options that set multiple flags
    class MultiSetter {
        std::vector<bool*> locations;
        bool invert;
        MultiSetter(bool); //not implemented, disable auto-conversion
    public:
        MultiSetter(bool invert, bool* p, ...) END_WITH_NULL;
        
        void operator=(bool val);
    };
    
    /// Helper class to fill Array with char* when given strings
    /// (Errors on empty strings)
    class ArrayAdapter {
        const char* name;
        Array** arrp;
    public:
        ArrayAdapter(const char* name_, Array*& arr) {
            name = name_;
            arrp = &arr;
            assert(name);
            assert(arrp);
        }
        
        void push_back(const char* cstr);
        
        void push_back(const std::string& str) {
            push_back(str.c_str());
        }
    };
    
    /// Helper class to allow use of a parser<bool> with BoolOrDefault
    class BoolOrDefaultAdapter {
        cl::boolOrDefault value;
    public:
        operator cl::boolOrDefault() {
            return value;
        }
        
        void operator=(cl::boolOrDefault val) {
            value = val;
        }
        
        void operator=(bool val) {
            *this = (val ? cl::BOU_TRUE : cl::BOU_FALSE);
        }
    };
}

#endif