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| version 1.15, 2001/02/21 11:19:20 | version 1.45, 2002/02/07 11:55:30 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: array class. |
| */ | |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru) | |
| #include <string.h> | $Id$ |
| */ | |
| #include "pa_pool.h" | #include "pa_pool.h" |
| #include "pa_array.h" | #include "pa_array.h" |
| #include "pa_exception.h" | #include "pa_exception.h" |
| #include "pa_common.h" | |
| Array::Array(Pool& apool, int initial_rows) : | void Array::construct_new(int initial_rows) { |
| Pooled(apool) { | |
| head=tail=static_cast<Chunk *>( | head=tail=static_cast<Chunk *>( |
| pool().malloc(sizeof(int)+sizeof(Chunk::Row)*initial_rows+sizeof(Chunk *))); | malloc(sizeof(int)+sizeof(Chunk::Row)*initial_rows+sizeof(Chunk *), 19)); |
| head->count=initial_rows; | head->count=initial_rows; |
| append_here=head->rows; | append_here=head->rows; |
| link_row=&head->rows[initial_rows]; | link_row=&head->rows[initial_rows]; |
| link_row->link=0; | link_row->link=0; |
| fused_rows=0; | fused_rows=0; |
| } | |
| cache_chunk_base=0; | Array::Array(Pool& apool, int initial_rows) : Pooled(apool) { |
| cache_chunk=head; | construct_new(max(initial_rows, CR_INITIAL_ROWS_DEFAULT)); |
| } | |
| Array::Array(const Array& source, int offset) : Pooled(source.pool()) { | |
| construct_new(source.size()); | |
| append_array(source, offset); | |
| } | } |
| void Array::expand(int chunk_rows) { | void Array::expand(int chunk_rows) { |
| Chunk *chunk=tail=static_cast<Chunk *>( | Chunk *chunk=tail=static_cast<Chunk *>( |
| pool().malloc(sizeof(int)+sizeof(Chunk::Row)*chunk_rows+sizeof(Chunk *))); | malloc(sizeof(int)+sizeof(Chunk::Row)*chunk_rows+sizeof(Chunk *), 2)); |
| chunk->count=chunk_rows; | chunk->count=chunk_rows; |
| link_row->link=chunk; | link_row->link=chunk; |
| append_here=chunk->rows; | append_here=chunk->rows; |
| Line 35 void Array::expand(int chunk_rows) { | Line 44 void Array::expand(int chunk_rows) { |
| Array& Array::operator += (Item *src) { | Array& Array::operator += (Item *src) { |
| if(chunk_is_full()) | if(chunk_is_full()) |
| expand(tail->count*CR_GROW_PERCENT/100); | expand(tail->count+CR_GROW_COUNT); |
| append_here->item=src; | append_here->item=src; |
| append_here++; fused_rows++; | append_here++; fused_rows++; |
| Line 45 Array& Array::operator += (Item *src) { | Line 54 Array& Array::operator += (Item *src) { |
| Array::Item *Array::get(int index) const { | Array::Item *Array::get(int index) const { |
| if(!(index>=0 && index<size())) { | if(!(index>=0 && index<size())) { |
| pool().exception().raise(0, 0, 0, | throw Exception(0, 0, 0, |
| "Array::get(%d) out of range [0..%d]", index, size()-1); | "Array::get(%d) out of range [0..%d]", index, size()-1); |
| return 0; | return 0; // never |
| } | } |
| // if they ask index to the left of cached position, forget cache | int base=0; |
| if(index<cache_chunk_base) { | Chunk *chunk=head; |
| cache_chunk_base=0; | |
| cache_chunk=head; | // navigate to chunk with "index" row |
| while(!(index>=base && index<base+chunk->count)) { | |
| int count=chunk->count; | |
| base+=count; | |
| chunk=chunk->rows[count].link; | |
| } | |
| return chunk->rows[index-base].item; | |
| } | |
| void Array::put(int index, Item *item) { | |
| if(!(index>=0 && index<size())) { | |
| throw Exception(0, 0, 0, | |
| "Array::put(%d) out of range [0..%d]", index, size()-1); | |
| return; // never | |
| } | } |
| int base=0; | |
| Chunk *chunk=head; | |
| // navigate to chunk with "index" row | // navigate to chunk with "index" row |
| while(!(index>=cache_chunk_base && index<cache_chunk_base+cache_chunk->count)) { | while(!(index>=base && index<base+chunk->count)) { |
| int count=cache_chunk->count; | int count=chunk->count; |
| cache_chunk_base+=count; | base+=count; |
| cache_chunk=cache_chunk->rows[count].link; | chunk=chunk->rows[count].link; |
| } | } |
| return cache_chunk->rows[index-cache_chunk_base].item; | chunk->rows[index-base].item=item; |
| } | } |
| Array& Array::append_array(const Array& src) { | Array& Array::append_array(const Array& src, int offset) { |
| int src_used_rows=src.fused_rows; | int src_rows_to_copy=src.fused_rows-offset; |
| int last_chunk_rows_left=link_row-append_here; | int last_chunk_rows_left=link_row-append_here; |
| // our last chunk too small for src to fit? | // our last chunk too small for src to fit? |
| if(src_used_rows>last_chunk_rows_left) { | if(src_rows_to_copy>last_chunk_rows_left) { |
| // shrink last chunk to used rows | // shrink last chunk to used rows |
| tail->count-=last_chunk_rows_left; | tail->count-=last_chunk_rows_left; |
| link_row=append_here; | link_row=append_here; |
| // append new src_used_rows-ed chunk | // append new src_used_rows-ed chunk |
| expand(src_used_rows); | expand(src_rows_to_copy); |
| } | } |
| Chunk *src_chunk=src.head; | Chunk *src_chunk=src.head; |
| Chunk::Row *dest_rows=append_here; | Chunk::Row *dest_rows=append_here; |
| int rows_left_to_copy=src_used_rows; | int rows_left_to_copy=src.fused_rows; |
| int rows_left_to_skip=offset; | |
| while(true) { | while(true) { |
| int src_count=src_chunk->count; | int src_count=src_chunk->count; |
| Chunk *next_chunk=src_chunk->rows[src_count].link; | Chunk *next_chunk=src_chunk->rows[src_count].link; |
| if(next_chunk) { | if(next_chunk) { |
| // not last source chunk | // not last source chunk |
| // taking it all | // taking it all |
| memcpy(dest_rows, src_chunk->rows, sizeof(Chunk::Row)*src_count); | int rows_to_copy_now=src_count-rows_left_to_skip; |
| dest_rows+=src_count; | if(rows_to_copy_now>0) |
| memcpy(dest_rows, src_chunk->rows+rows_left_to_skip, | |
| sizeof(Chunk::Row)*rows_to_copy_now); | |
| else | |
| rows_left_to_skip-=src_count; | |
| dest_rows+=rows_to_copy_now; | |
| rows_left_to_copy-=src_count; | rows_left_to_copy-=src_count; |
| src_chunk=next_chunk; | src_chunk=next_chunk; |
| } else { | } else { |
| // the last source chunk | // the last source chunk |
| // taking only those rows of chunk that _left_to_copy | // taking only those rows of chunk that _left_to_copy |
| memcpy(dest_rows, src_chunk->rows, sizeof(Chunk::Row)*rows_left_to_copy); | int rows_to_copy_now=rows_left_to_copy-rows_left_to_skip; |
| if(rows_to_copy_now>0) | |
| memcpy(dest_rows, src_chunk->rows+rows_left_to_skip, | |
| sizeof(Chunk::Row)*rows_to_copy_now); | |
| break; | break; |
| } | } |
| } | } |
| append_here+=src_used_rows; | append_here+=src_rows_to_copy; |
| fused_rows+=src_used_rows; | fused_rows+=src_rows_to_copy; |
| return *this; | return *this; |
| } | } |
| void Array::for_each(For_each_func func, void *info) const { | |
| Chunk *chunk=head; | |
| while(true) { | |
| if(chunk==tail) { // last chunk? | |
| for(Chunk::Row *row=chunk->rows; row!=append_here; row++) | |
| (*func)(row->item, info); | |
| break; | |
| } else { | |
| int count=chunk->count; | |
| for(int i=0; i<count; i++) | |
| (*func)(chunk->rows[i].item, info); | |
| chunk=chunk->rows[count].link; | |
| } | |
| } | |
| } | |
| /*void Array::for_each(For_each_func_storage func, void *info) { | |
| Chunk *chunk=head; | |
| while(true) { | |
| if(chunk==tail) { // last chunk? | |
| for(Chunk::Row *row=chunk->rows; row!=append_here; row++) | |
| (*func)(&row->item, info); | |
| break; | |
| } else { | |
| int count=chunk->count; | |
| for(int i=0; i<count; i++) | |
| (*func)(&chunk->rows[i].item, info); | |
| chunk=chunk->rows[count].link; | |
| } | |
| } | |
| } | |
| */ | |
| /*void Array::for_each(For_each_func_const func, const void *info) const { | |
| Chunk *chunk=head; | |
| while(true) { | |
| if(chunk==tail) { // last chunk? | |
| for(Chunk::Row *row=chunk->rows; row!=append_here; row++) | |
| (*func)(row->item, info); | |
| break; | |
| } else { | |
| int count=chunk->count; | |
| for(int i=0; i<count; i++) | |
| (*func)(chunk->rows[i].item, info); | |
| chunk=chunk->rows[count].link; | |
| } | |
| } | |
| } | |
| */ | |
| void* Array::first_that(Item_that_func_const func, const void *info) const { | |
| Chunk *chunk=head; | |
| while(true) { | |
| if(chunk==tail) { // last chunk? | |
| for(Chunk::Row *row=chunk->rows; row!=append_here; row++) | |
| if(void *result=(*func)(row->item, info)) | |
| return result; | |
| break; | |
| } else { | |
| int count=chunk->count; | |
| for(int i=0; i<count; i++) { | |
| Item* item=chunk->rows[i].item; | |
| if(void *result=(*func)(item, info)) | |
| return result; | |
| } | |
| chunk=chunk->rows[count].link; | |
| } | |
| } | |
| return 0; | |
| } | |
| void* Array::first_that(Item_that_func func, void *info) const { | |
| Chunk *chunk=head; | |
| while(true) { | |
| if(chunk==tail) { // last chunk? | |
| for(Chunk::Row *row=chunk->rows; row!=append_here; row++) | |
| if(void *result=(*func)(row->item, info)) | |
| return result; | |
| break; | |
| } else { | |
| int count=chunk->count; | |
| for(int i=0; i<count; i++) { | |
| Item* item=chunk->rows[i].item; | |
| if(void *result=(*func)(item, info)) | |
| return result; | |
| } | |
| chunk=chunk->rows[count].link; | |
| } | |
| } | |
| return 0; | |
| } |