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Type.d
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Type.d
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/**
* Copyright: Copyright (c) 2011 Jacob Carlborg. All rights reserved.
* Authors: Jacob Carlborg
* Version: Initial created: Jan 29, 2012
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
*/
module clang.Type;
import std.bitmanip;
import clang.c.Index;
import clang.Cursor;
import clang.Util;
struct Type
{
static assert(Type.init.kind == CXTypeKind.invalid);
mixin CX;
private Type* pointee_;
private Type* canonical_;
mixin(bitfields!(
bool, "isConst", 1,
bool, "isVolatile", 1,
bool, "isClang", 1,
uint, "", 5));
string spelling = "";
this (CXType cx)
{
this.cx = cx;
spelling = Cursor(clang_getTypeDeclaration(cx)).spelling;
isConst = clang_isConstQualifiedType(cx) == 1;
isClang = true;
}
this (CXTypeKind kind, string spelling)
{
cx.kind = kind;
this.spelling = spelling;
}
static Type makePointer(Type pointee)
{
Type result = Type(CXTypeKind.pointer, "");
result.pointee_ = new Type();
*result.pointee_ = pointee;
return result;
}
static Type makeTypedef(string spelling, Type canonical)
{
Type result = Type(CXTypeKind.typedef_, spelling);
result.canonical_ = new Type();
*result.canonical_ = canonical;
return result;
}
@property bool isAnonymous ()
{
return spelling == "";
}
@property Type underlying ()
{
return declaration.underlyingType;
}
@property bool isArray ()
{
return
kind == CXTypeKind.constantArray ||
kind == CXTypeKind.incompleteArray ||
kind == CXTypeKind.variableArray ||
kind == CXTypeKind.dependentSizedArray;
}
/**
* Removes array and pointer modifiers from the type.
*/
@property Type undecorated()
{
if (isArray)
return array.elementType.undecorated;
else if (kind == CXTypeKind.pointer && !pointee.isFunctionType)
return pointee.undecorated;
else
return this;
}
@property bool isDecorated()
{
return isArray || (kind == CXTypeKind.pointer && !pointee.isFunctionType);
}
@property bool isEnum ()
{
return kind == CXTypeKind.enum_;
}
@property bool isExposed ()
{
return kind != CXTypeKind.unexposed;
}
@property bool isFunctionType ()
{
return canonical.kind == CXTypeKind.functionProto;
}
@property bool isFunctionPointerType ()
{
return kind == CXTypeKind.pointer && pointee.isFunctionType;
}
@property bool isObjCIdType ()
{
return isTypedef &&
canonical.kind == CXTypeKind.objCObjectPointer &&
spelling == "id";
}
@property bool isObjCClassType ()
{
return isTypedef &&
canonical.kind == CXTypeKind.objCObjectPointer &&
spelling == "Class";
}
@property bool isObjCSelType ()
{
with(CXTypeKind)
if (isTypedef)
{
auto c = canonical;
return c.kind == pointer &&
c.pointee.kind == objCSel;
}
else
return false;
}
@property bool isObjCBuiltinType ()
{
return isObjCIdType || isObjCClassType || isObjCSelType;
}
@property bool isPointer ()
{
return kind == CXTypeKind.pointer;
}
@property bool isTypedef ()
{
return kind == CXTypeKind.typedef_;
}
@property bool isValid ()
{
return kind != CXTypeKind.invalid;
}
@property bool isWideCharType ()
{
return kind == CXTypeKind.wChar;
}
@property Type canonical()
{
if (canonical_)
{
return *canonical_;
}
else
{
if (isClang)
return Type(clang_getCanonicalType(cx));
else
return Type.init;
}
}
@property Type pointee()
{
if (pointee_)
{
return *pointee_;
}
else
{
if (isClang)
return Type(clang_getPointeeType(cx));
else
return Type.init;
}
}
@property Type element()
{
return Type(clang_getElementType(cx));
}
@property Type named()
{
if (isClang)
return Type(clang_Type_getNamedType(cx));
else
return Type.init;
}
@property Cursor declaration ()
{
if (isClang)
return Cursor(clang_getTypeDeclaration(cx));
else
return Cursor.empty;
}
@property FuncType func ()
{
return FuncType(this);
}
@property ArrayType array ()
{
return ArrayType(this);
}
@property size_t sizeOf()
{
if (isClang)
{
auto result = clang_Type_getSizeOf(cx);
if (result < 0)
throwTypeLayoutError(cast(CXTypeLayoutError) result, spelling);
return cast(size_t) result;
}
else
{
throw new TypeLayoutErrorUnknown(spelling);
}
}
@property string toString() const
{
import std.format: format;
return format("Type(kind = %s, spelling = %s, isConst = %s)", kind, spelling, isConst);
}
@property string toString()
{
import std.format : format;
return format("Type(kind = %s, spelling = %s)", kind, spelling);
}
}
struct FuncType
{
Type type;
alias type this;
@property Type resultType ()
{
auto r = clang_getResultType(type.cx);
return Type(r);
}
@property Arguments arguments ()
{
return Arguments(this);
}
@property bool isVariadic ()
{
return clang_isFunctionTypeVariadic(type.cx) == 1;
}
}
struct ArrayType
{
Type type;
alias type this;
this (Type type)
{
assert(type.isArray);
this.type = type;
}
@property Type elementType ()
{
auto r = clang_getArrayElementType(cx);
return Type(r);
}
@property long size ()
{
return clang_getArraySize(cx);
}
@property size_t numDimensions ()
{
size_t result = 1;
auto subtype = elementType();
while (subtype.isArray)
{
++result;
subtype = subtype.array.elementType();
}
return result;
}
}
struct Arguments
{
FuncType type;
@property uint length ()
{
return clang_getNumArgTypes(type.type.cx);
}
Type opIndex (uint i)
{
auto r = clang_getArgType(type.type.cx, i);
return Type(r);
}
int opApply (int delegate (ref Type) dg)
{
foreach (i ; 0 .. length)
{
auto type = this[i];
if (auto result = dg(type))
return result;
}
return 0;
}
}
@property bool isIntegral (CXTypeKind kind)
{
with (CXTypeKind)
switch (kind)
{
case bool_:
case charU:
case uChar:
case char16:
case char32:
case uShort:
case uInt:
case uLong:
case uLongLong:
case uInt128:
case charS:
case sChar:
case wChar:
case short_:
case int_:
case long_:
case longLong:
case int128:
return true;
default:
return false;
}
}
@property bool isUnsigned (CXTypeKind kind)
{
with (CXTypeKind)
switch (kind)
{
case charU: return true;
case uChar: return true;
case uShort: return true;
case uInt: return true;
case uLong: return true;
case uLongLong: return true;
case uInt128: return true;
default: return false;
}
}
class TypeLayoutError : object.Exception
{
this (string message, string file = __FILE__, size_t line = __LINE__)
{
super(message, file, line);
}
}
class TypeLayoutErrorUnknown : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The layout of the type is unknown: '" ~ spelling ~ "'.");
}
}
class TypeLayoutErrorInvalid : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The type is of invalid kind.");
}
}
class TypeLayoutErrorIncomplete : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The type '" ~ spelling ~ "' is an incomplete type.");
}
}
class TypeLayoutErrorDependent : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The type `" ~ spelling ~ "` is a dependent type.");
}
}
class TypeLayoutErrorNotConstantSize : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The type '" ~ spelling ~ "'is not a constant size type.");
}
}
class TypeLayoutErrorInvalidFieldName : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The field name '" ~ spelling ~ "' is not valid for this record.");
}
}
class TypeLayoutErrorUndeduced : TypeLayoutError
{
this (string spelling, string file = __FILE__, size_t line = __LINE__)
{
super("The type '" ~ spelling ~ "' is undeduced.");
}
}
void throwTypeLayoutError(
CXTypeLayoutError layout,
string spelling,
string file = __FILE__,
size_t line = __LINE__)
{
final switch (layout)
{
case CXTypeLayoutError.invalid:
throw new TypeLayoutErrorInvalid(spelling, file, line);
case CXTypeLayoutError.incomplete:
throw new TypeLayoutErrorIncomplete(spelling, file, line);
case CXTypeLayoutError.dependent:
throw new TypeLayoutErrorDependent(spelling, file, line);
case CXTypeLayoutError.notConstantSize:
throw new TypeLayoutErrorNotConstantSize(spelling, file, line);
case CXTypeLayoutError.invalidFieldName:
throw new TypeLayoutErrorInvalidFieldName(spelling, file, line);
case CXTypeLayoutError.undeduced:
throw new TypeLayoutErrorUndeduced(spelling, file, line);
}
}