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#pragma once
#include "Core/StrBuf.h"
#include "Core/Str.h"
#include "Compiler/Name.h"
#include "Compiler/Scope.h"
namespace storm {
namespace bs {
STORM_PKG(lang.bs);
/**
* One formal parameter to a function, with the type not yet resolved.
*/
class NameParam {
STORM_VALUE;
public:
STORM_CTOR NameParam(SrcName *type, Str *name);
STORM_CTOR NameParam(SrcName *type, syntax::SStr *name);
SrcName *type;
Str *name;
// Output.
void STORM_FN toS(StrBuf *to) const;
};
// Nameless parameter.
NameParam STORM_FN nameless(SrcName *type);
wostream &operator <<(wostream &to, NameParam p);
/**
* One formal parameter to a function, with its type resolved.
*/
class ValParam {
STORM_VALUE;
public:
STORM_CTOR ValParam(Value type, Str *name);
STORM_CTOR ValParam(Value type, syntax::SStr *name);
Value STORM_FN type() const { return Value(t, ref); }
Str *name;
// Is this a 'this' parameter?
Bool thisParam() const { return thisPar; }
// Output.
void STORM_FN toS(StrBuf *to) const;
private:
// Note: We disassemble the Value in order to not make this structure large due to
// misaligned boolean variables (one in the Value and one here).
ValParam(Value type, Str *name, Bool thisParam);
// The type (we make a Value out of this).
Type *t;
// Is the type a reference (we make a Value out of this).
Bool ref;
// Is this parametera "this" parameter? I.e. is it known to be the this parameter?
Bool thisPar;
friend ValParam thisParam(Type *me);
friend ValParam thisParam(Str *name, Type *me);
};
wostream &operator <<(wostream &to, ValParam p);
// Create a ValParam representing the 'this' parameter. This distinction is made to
// differentiate between the 'this'-variable generated by the system (that we know things
// about) and any other variable named 'this' by the user for convenience (makes non-member
// functions more convenient to write at times, so we want to support it).
//
// The Basic Storm front-end will use this information to make assumptions about this
// parameter. In particular:
// - the parameter will be made constant.
// - the front-end assumes that we don't need to switch threads when calling member
// functions on the object referred to by this variable.
ValParam STORM_FN thisParam(Type *me);
ValParam STORM_FN thisParam(Str *name, Type *me);
// Get parameters as Values.
ValParam STORM_FN resolve(NameParam param, Scope scope);
Array<ValParam> *STORM_FN resolve(Array<NameParam> *params, Scope scope);
Array<ValParam> *STORM_FN resolve(Array<NameParam> *params, Type *me, Scope scope);
Array<Value> *STORM_FN values(Array<ValParam> *params);
// Merge two arrays of values and names into one array of ValParam.
Array<ValParam> *STORM_FN merge(Array<Value> *val, Array<Str *> *names);
}
}
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