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70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
#ifndef __VECTOR_H__
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#define __VECTOR_H__
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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/*
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* Generic resizable vector that can be used if you just want to store stuff
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* temporarily.
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* Works like C++ std::vector with an underlying resizable buffer
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*/
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typedef struct {
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char *data;
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size_t elemSize;
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size_t cap;
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size_t top;
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} Vector;
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/* Create a new vector with element size. This should generally be used
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* internall by the NewVector macro */
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Vector *__newVectorSize(size_t elemSize, size_t cap);
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// Put a pointer in the vector. To be used internall by the library
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int __vector_PutPtr(Vector *v, size_t pos, void *elem);
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/*
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* Create a new vector for a given type and a given capacity.
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* e.g. NewVector(int, 0) - empty vector of ints
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*/
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#define NewVector(type, cap) __newVectorSize(sizeof(type), cap)
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/*
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* get the element at index pos. The value is copied in to ptr. If pos is outside
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* the vector capacity, we return 0
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* otherwise 1
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*/
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int Vector_Get(Vector *v, size_t pos, void *ptr);
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//#define Vector_Getx(v, pos, ptr) pos < v->cap ? 1 : 0; *ptr =
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//*(typeof(ptr))(v->data + v->elemSize*pos)
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/*
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* Put an element at pos.
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* Note: If pos is outside the vector capacity, we resize it accordingly
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*/
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#define Vector_Put(v, pos, elem) __vector_PutPtr(v, pos, &(typeof(elem)){elem})
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/* Push an element at the end of v, resizing it if needed. This macro wraps
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* __vector_PushPtr */
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#define Vector_Push(v, elem) __vector_PushPtr(v, &(typeof(elem)){elem})
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int __vector_PushPtr(Vector *v, void *elem);
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/* resize capacity of v */
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int Vector_Resize(Vector *v, size_t newcap);
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/* return the used size of the vector, regardless of capacity */
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inline int Vector_Size(Vector *v) { return v->top; }
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/* return the actual capacity */
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inline int Vector_Cap(Vector *v) { return v->cap; }
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/* free the vector and the underlying data. Does not release its elements if
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* they are pointers*/
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void Vector_Free(Vector *v);
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int __vecotr_PutPtr(Vector *v, size_t pos, void *elem);
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#endif |