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Copy pathsrcMLState.hpp
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301 lines (254 loc) · 5.43 KB
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// SPDX-License-Identifier: GPL-3.0-only
/**
* @file srcMLState.hpp
*
* @copyright Copyright (C) 2003-2024 srcML, LLC. (www.srcML.org)
*
* This file is part of the srcML Toolkit.
*/
#ifndef SRCMLSTATE_HPP
#define SRCMLSTATE_HPP
#include <stack>
#include <srcMLException.hpp>
#include <bitset>
/**
* srcMLState
*
* Class to hold srcML state e.g. parenthesis/curly braces/type counts.
* Also, holds modes.
*/
class srcMLState {
public:
/** type of mode for GNU */
typedef std::bitset<256> MODE_TYPE;
/**
* srcMLState
* @param mode current mode to create
* @param transmode the transparent mode
* @param prevmode previous mode.
*
* Constructor. Create a new mode with the perscribed mode, transparent mode, and previous mode.
*/
srcMLState(const MODE_TYPE& mode = 0, const MODE_TYPE& transmode = 0, const MODE_TYPE& prevmode = 0)
: flags(mode), flags_prev(prevmode), flags_all(transmode | mode), parencount(0), curlycount(0), typecount(0)
{}
// copy constructor
srcMLState(const srcMLState&) = default;
// copy assignment
srcMLState& operator=(const srcMLState&) = default;
/**
* size
*
* Get number of open elements.
*
* @returns the number of open elements.
*/
int size() const {
return (int)openelements.size();
}
/**
* push
* @param id number of tag to add to open elements
*
* Add open element to stack.
*/
void push(int id) {
openelements.push(id);
}
/**
* pop
*
* Remove an open element from stack.
*/
void pop() {
if (openelements.empty())
throw Segmentation_Fault();
openelements.pop();
}
// mode methods
/**
* inMode
* @param m a mode to test if in
*
* Predicate to test if in modes m.
*
* @returns if in modes m.
*/
bool inMode(const MODE_TYPE& m) const {
return (flags & m) == m;
}
/**
* inPrevMode
* @param m a mode to test if in
*
* Predicate to test if in the previous modes m.
*
* @returns if in previous modes m.
*/
bool inPrevMode(const MODE_TYPE& m) const {
return (flags_prev & m) == m;
}
/**
* inTransaprentMode
* @param m a mode to test if in
*
* Predicate to test if in transparent modes m.
*
* @returns if in transparent modes m.
*/
bool inTransparentMode(const MODE_TYPE& m) const {
return (flags_all & m) == m;
}
/**
* getMode
*
* Get the current mode.
*
* @returns the current mode.
*/
const MODE_TYPE& getMode() const {
return flags;
}
/**
* getTransparentMode
*
* Get the current transparent mode.
*
* @returns the current transparent mode.
*/
const MODE_TYPE& getTransparentMode() const {
return flags_all;
}
/**
* setMode
* @param m1 mode to set in addition to current mdoes
*
* Set the mode and transparent mode to have m1 modes in addition
* to the modes they already have.
*/
void setMode(const MODE_TYPE& m1) {
flags |= m1;
flags_all |= m1;
}
/**
* clearMode
* @param m modes to clear/unset
*
* Clear/unset only the modes m from mode and transparent mode.
*/
void clearMode(const MODE_TYPE& m) {
flags &= ~m;
flags_all &= ~m;
}
/**
* getParen
*
* Get the open parenthesis count
*
* @returns the current open parenthesis count.
*/
int getParen() const {
return parencount;
}
/**
* incParen
*
* Increment the open parenthesis count
*/
void incParen() {
++parencount;
}
/**
* decParen
*
* Decrement the open parenthesis count
*/
void decParen() {
--parencount;
}
/**
* getCurly
*
* Get the open curly brace count
*
* @returns the current open curly brace count.
*/
int getCurly() const {
return curlycount;
}
/**
* incCurly
*
* Increment the open curly brace count
*/
void incCurly() {
++curlycount;
}
/**
* decCurly
*
* Decrement the open curly brace count
*/
void decCurly() {
--curlycount;
}
/**
* getTypeCount
*
* Get the type count
*
* @returns the current type count.
*/
int getTypeCount() const {
return typecount;
}
/**
* setTypeCount
* @param n number of types to set
*
* Set the type count
*/
void setTypeCount(int n) {
typecount = n;
}
/**
* incTypeCount
*
* Increment the type count
*/
void incTypeCount() {
++typecount;
}
/**
* decTypeCount
*
* Decrement the type count
*/
void decTypeCount() {
--typecount;
}
/**
* ~srcMLState
*
* Destructor.
*/
~srcMLState() {
}
public:
/** current mode */
MODE_TYPE flags;
/** previous mode */
MODE_TYPE flags_prev;
/** transparent (all) modes */
MODE_TYPE flags_all;
/** stack of open elements */
std::stack<int> openelements;
private:
/** open parenthesis count */
int parencount;
/** open curly brace count */
int curlycount;
/** current type count */
int typecount;
};
#endif