| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| #include <guththila_stack.h> |
| |
| int GUTHTHILA_CALL |
| guththila_stack_init( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| stack->top = 0; |
| stack->data = (void **)AXIS2_MALLOC(env->allocator, sizeof(void **) * GUTHTHILA_STACK_DEFAULT); |
| if(!stack->data) |
| { |
| return GUTHTHILA_FAILURE; |
| } |
| else |
| { |
| stack->max = GUTHTHILA_STACK_DEFAULT; |
| return GUTHTHILA_SUCCESS; |
| } |
| } |
| |
| void GUTHTHILA_CALL |
| guththila_stack_free( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| if(stack->data) |
| AXIS2_FREE(env->allocator, stack->data); |
| AXIS2_FREE(env->allocator, stack); |
| } |
| |
| void GUTHTHILA_CALL |
| guththila_stack_un_init( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| if(stack->data) |
| AXIS2_FREE(env->allocator, stack->data); |
| } |
| |
| void *GUTHTHILA_CALL |
| guththila_stack_pop( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| if(stack->top > 0) |
| { |
| return stack->data[--(stack->top)]; |
| } |
| return NULL; |
| } |
| |
| int GUTHTHILA_CALL |
| guththila_stack_push( |
| guththila_stack_t * stack, |
| void *data, |
| const axutil_env_t * env) |
| { |
| int top = stack->top++; |
| if(top >= stack->max) |
| { |
| void **temp = NULL; |
| int i = 0; |
| temp = (void **)AXIS2_MALLOC(env->allocator, sizeof(void **) * (stack->max *= 2)); |
| for(i = 0; i < top; ++i) |
| { |
| temp[i] = stack->data[i]; |
| } |
| AXIS2_FREE(env->allocator, stack->data); |
| stack->data = temp; |
| } |
| stack->data[top] = data; |
| return top; |
| } |
| |
| void *GUTHTHILA_CALL |
| guththila_stack_peek( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| if(stack->top > 0) |
| { |
| return stack->data[stack->top - 1]; |
| } |
| else |
| { |
| return NULL; |
| } |
| } |
| |
| int GUTHTHILA_CALL |
| guththila_stack_del_top( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| if(stack->top > 0) |
| { |
| AXIS2_FREE(env->allocator, stack->data[stack->top]); |
| return GUTHTHILA_SUCCESS; |
| } |
| return GUTHTHILA_FAILURE; |
| } |
| |
| int GUTHTHILA_CALL |
| guththila_stack_is_empty( |
| guththila_stack_t * stack, |
| const axutil_env_t * env) |
| { |
| return stack->top == 0 ? 1 : 0; |
| } |
| |
| void *GUTHTHILA_CALL |
| guththila_stack_get_by_index( |
| guththila_stack_t * stack, |
| int index, |
| const axutil_env_t * env) |
| { |
| return index < stack->top ? stack->data[index] : NULL; |
| } |
| |