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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __VAR__H__
#define __VAR__H__
#include "VarType.h"
#include <string>
#include <stdio.h>
class Var {
public:
// pointer data direction - from the client point of view.
typedef enum { POINTER_OUT = 0x1, POINTER_IN = 0x2, POINTER_INOUT = 0x3 } PointerDir;
Var() :
m_name(""),
m_type(NULL),
m_pointer(false),
m_lenExpression(""),
m_pointerDir(POINTER_IN),
m_nullAllowed(false),
m_packExpression("")
{
}
Var(const std::string & name,
const VarType * vartype,
bool isPointer,
const std::string & lenExpression,
PointerDir dir,
const std::string &packExpression) :
m_name(name),
m_type(const_cast<VarType *>(vartype)),
m_pointer(isPointer),
m_lenExpression(lenExpression),
m_pointerDir(dir),
m_nullAllowed(false),
m_packExpression(packExpression)
{
}
void init(const std::string name, const VarType * vartype,
bool isPointer, std::string lenExpression,
PointerDir dir, std::string packExpression) {
m_name = name;
m_type = vartype;
m_pointer = isPointer;
m_lenExpression = lenExpression;
m_packExpression = packExpression;
m_pointerDir = dir;
m_nullAllowed = false;
}
const std::string & name() const { return m_name; }
const VarType * type() const { return m_type; }
bool isPointer() const { return m_pointer; }
bool isVoid() const { return ((m_type->bytes() == 0) && (m_pointer == false)); }
const std::string & lenExpression() const { return m_lenExpression; }
const std::string & packExpression() const { return(m_packExpression); }
void setLenExpression(const std::string & lenExpression) { m_lenExpression = lenExpression; }
void setPackExpression(const std::string & packExpression) { m_packExpression = packExpression; }
void setPointerDir(PointerDir dir) { m_pointerDir = dir; }
PointerDir pointerDir() { return m_pointerDir; }
void setNullAllowed(bool state) { m_nullAllowed = state; }
bool nullAllowed() const { return m_nullAllowed; }
void printType(FILE *fp) { fprintf(fp, "%s%s", m_type->name().c_str(), m_pointer ? "*" : ""); }
void printTypeName(FILE *fp) { printType(fp); fprintf(fp, " %s", m_name.c_str()); }
private:
std::string m_name;
const VarType * m_type;
bool m_pointer; // is this variable a pointer;
std::string m_lenExpression; // an expression to calcualte a pointer data size
PointerDir m_pointerDir;
bool m_nullAllowed;
std::string m_packExpression; // an expression to pack data into the stream
};
#endif
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