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Kieran's opinionated (and probably slightly dumb) nix config
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10 kB · 291 lines
C
at main
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#ifdef __cplusplusextern "C" {#endif
#include "./alloc.h"
#include <assert.h>#include <stdbool.h>#include <stdint.h>#include <stdlib.h>#include <string.h>
#ifdef _MSC_VER#pragma warning(push)#pragma warning(disable : 4101)#elif defined(__GNUC__) || defined(__clang__)#pragma GCC diagnostic push#pragma GCC diagnostic ignored "-Wunused-variable"#endif
#define Array(T) \ struct { \ T *contents; \ uint32_t size; \ uint32_t capacity; \ }
/// Initialize an array.#define array_init(self) \ ((self)->size = 0, (self)->capacity = 0, (self)->contents = NULL)
/// Create an empty array.#define array_new() \ { NULL, 0, 0 }
/// Get a pointer to the element at a given `index` in the array.#define array_get(self, _index) \ (assert((uint32_t)(_index) < (self)->size), &(self)->contents[_index])
/// Get a pointer to the first element in the array.#define array_front(self) array_get(self, 0)
/// Get a pointer to the last element in the array.#define array_back(self) array_get(self, (self)->size - 1)
/// Clear the array, setting its size to zero. Note that this does not free any/// memory allocated for the array's contents.#define array_clear(self) ((self)->size = 0)
/// Reserve `new_capacity` elements of space in the array. If `new_capacity` is/// less than the array's current capacity, this function has no effect.#define array_reserve(self, new_capacity) \ _array__reserve((Array *)(self), array_elem_size(self), new_capacity)
/// Free any memory allocated for this array. Note that this does not free any/// memory allocated for the array's contents.#define array_delete(self) _array__delete((Array *)(self))
/// Push a new `element` onto the end of the array.#define array_push(self, element) \ (_array__grow((Array *)(self), 1, array_elem_size(self)), \ (self)->contents[(self)->size++] = (element))
/// Increase the array's size by `count` elements./// New elements are zero-initialized.#define array_grow_by(self, count) \ do { \ if ((count) == 0) break; \ _array__grow((Array *)(self), count, array_elem_size(self)); \ memset((self)->contents + (self)->size, 0, (count) * array_elem_size(self)); \ (self)->size += (count); \ } while (0)
/// Append all elements from one array to the end of another.#define array_push_all(self, other) \ array_extend((self), (other)->size, (other)->contents)
/// Append `count` elements to the end of the array, reading their values from the/// `contents` pointer.#define array_extend(self, count, contents) \ _array__splice( \ (Array *)(self), array_elem_size(self), (self)->size, \ 0, count, contents \ )
/// Remove `old_count` elements from the array starting at the given `index`. At/// the same index, insert `new_count` new elements, reading their values from the/// `new_contents` pointer.#define array_splice(self, _index, old_count, new_count, new_contents) \ _array__splice( \ (Array *)(self), array_elem_size(self), _index, \ old_count, new_count, new_contents \ )
/// Insert one `element` into the array at the given `index`.#define array_insert(self, _index, element) \ _array__splice((Array *)(self), array_elem_size(self), _index, 0, 1, &(element))
/// Remove one element from the array at the given `index`.#define array_erase(self, _index) \ _array__erase((Array *)(self), array_elem_size(self), _index)
/// Pop the last element off the array, returning the element by value.#define array_pop(self) ((self)->contents[--(self)->size])
/// Assign the contents of one array to another, reallocating if necessary.#define array_assign(self, other) \ _array__assign((Array *)(self), (const Array *)(other), array_elem_size(self))
/// Swap one array with another#define array_swap(self, other) \ _array__swap((Array *)(self), (Array *)(other))
/// Get the size of the array contents#define array_elem_size(self) (sizeof *(self)->contents)
/// Search a sorted array for a given `needle` value, using the given `compare`/// callback to determine the order.////// If an existing element is found to be equal to `needle`, then the `index`/// out-parameter is set to the existing value's index, and the `exists`/// out-parameter is set to true. Otherwise, `index` is set to an index where/// `needle` should be inserted in order to preserve the sorting, and `exists`/// is set to false.#define array_search_sorted_with(self, compare, needle, _index, _exists) \ _array__search_sorted(self, 0, compare, , needle, _index, _exists)
/// Search a sorted array for a given `needle` value, using integer comparisons/// of a given struct field (specified with a leading dot) to determine the order.////// See also `array_search_sorted_with`.#define array_search_sorted_by(self, field, needle, _index, _exists) \ _array__search_sorted(self, 0, _compare_int, field, needle, _index, _exists)
/// Insert a given `value` into a sorted array, using the given `compare`/// callback to determine the order.#define array_insert_sorted_with(self, compare, value) \ do { \ unsigned _index, _exists; \ array_search_sorted_with(self, compare, &(value), &_index, &_exists); \ if (!_exists) array_insert(self, _index, value); \ } while (0)
/// Insert a given `value` into a sorted array, using integer comparisons of/// a given struct field (specified with a leading dot) to determine the order.////// See also `array_search_sorted_by`.#define array_insert_sorted_by(self, field, value) \ do { \ unsigned _index, _exists; \ array_search_sorted_by(self, field, (value) field, &_index, &_exists); \ if (!_exists) array_insert(self, _index, value); \ } while (0)
// Private
typedef Array(void) Array;
/// This is not what you're looking for, see `array_delete`.static inline void _array__delete(Array *self) { if (self->contents) { ts_free(self->contents); self->contents = NULL; self->size = 0; self->capacity = 0; }}
/// This is not what you're looking for, see `array_erase`.static inline void _array__erase(Array *self, size_t element_size, uint32_t index) { assert(index < self->size); char *contents = (char *)self->contents; memmove(contents + index * element_size, contents + (index + 1) * element_size, (self->size - index - 1) * element_size); self->size--;}
/// This is not what you're looking for, see `array_reserve`.static inline void _array__reserve(Array *self, size_t element_size, uint32_t new_capacity) { if (new_capacity > self->capacity) { if (self->contents) { self->contents = ts_realloc(self->contents, new_capacity * element_size); } else { self->contents = ts_malloc(new_capacity * element_size); } self->capacity = new_capacity; }}
/// This is not what you're looking for, see `array_assign`.static inline void _array__assign(Array *self, const Array *other, size_t element_size) { _array__reserve(self, element_size, other->size); self->size = other->size; memcpy(self->contents, other->contents, self->size * element_size);}
/// This is not what you're looking for, see `array_swap`.static inline void _array__swap(Array *self, Array *other) { Array swap = *other; *other = *self; *self = swap;}
/// This is not what you're looking for, see `array_push` or `array_grow_by`.static inline void _array__grow(Array *self, uint32_t count, size_t element_size) { uint32_t new_size = self->size + count; if (new_size > self->capacity) { uint32_t new_capacity = self->capacity * 2; if (new_capacity < 8) new_capacity = 8; if (new_capacity < new_size) new_capacity = new_size; _array__reserve(self, element_size, new_capacity); }}
/// This is not what you're looking for, see `array_splice`.static inline void _array__splice(Array *self, size_t element_size, uint32_t index, uint32_t old_count, uint32_t new_count, const void *elements) { uint32_t new_size = self->size + new_count - old_count; uint32_t old_end = index + old_count; uint32_t new_end = index + new_count; assert(old_end <= self->size);
_array__reserve(self, element_size, new_size);
char *contents = (char *)self->contents; if (self->size > old_end) { memmove( contents + new_end * element_size, contents + old_end * element_size, (self->size - old_end) * element_size ); } if (new_count > 0) { if (elements) { memcpy( (contents + index * element_size), elements, new_count * element_size ); } else { memset( (contents + index * element_size), 0, new_count * element_size ); } } self->size += new_count - old_count;}
/// A binary search routine, based on Rust's `std::slice::binary_search_by`./// This is not what you're looking for, see `array_search_sorted_with` or `array_search_sorted_by`.#define _array__search_sorted(self, start, compare, suffix, needle, _index, _exists) \ do { \ *(_index) = start; \ *(_exists) = false; \ uint32_t size = (self)->size - *(_index); \ if (size == 0) break; \ int comparison; \ while (size > 1) { \ uint32_t half_size = size / 2; \ uint32_t mid_index = *(_index) + half_size; \ comparison = compare(&((self)->contents[mid_index] suffix), (needle)); \ if (comparison <= 0) *(_index) = mid_index; \ size -= half_size; \ } \ comparison = compare(&((self)->contents[*(_index)] suffix), (needle)); \ if (comparison == 0) *(_exists) = true; \ else if (comparison < 0) *(_index) += 1; \ } while (0)
/// Helper macro for the `_sorted_by` routines below. This takes the left (existing)/// parameter by reference in order to work with the generic sorting function above.#define _compare_int(a, b) ((int)*(a) - (int)(b))
#ifdef _MSC_VER#pragma warning(pop)#elif defined(__GNUC__) || defined(__clang__)#pragma GCC diagnostic pop#endif
#ifdef __cplusplus}#endif
#endif // TREE_SITTER_ARRAY_H_