mirror of
https://github.com/jerryscript-project/jerryscript.git
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a4e54e736e
Now, parser correctly finishes parse procedure if syntax of source code is incorrect (syntax correctness is indicated using return value): - parser-internal memory management is performed using jsp_mm_alloc / jsp_mm_free; - upon detection of incorrect syntax, all parser-allocated memory regions are deallocated using jsp_mm_free_all and parse finishes with corresponding return value. JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
129 lines
3.1 KiB
C++
129 lines
3.1 KiB
C++
/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "array-list.h"
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#include "hash-table.h"
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#include "jrt-libc-includes.h"
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#include "jsp-mm.h"
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typedef struct
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{
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uint16_t (*hash) (void *);
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array_list *data;
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uint16_t size;
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uint8_t key_size;
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uint8_t value_size;
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} hash_table_int;
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static hash_table_int *
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extract_header (hash_table ht)
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{
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JERRY_ASSERT (ht != null_hash);
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hash_table_int *hti = (hash_table_int *) ht;
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return hti;
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}
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static uint8_t
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bucket_size (hash_table_int *hti)
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{
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return (uint8_t) (hti->key_size + hti->value_size);
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}
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static array_list
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get_list (hash_table_int *h, uint16_t i)
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{
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return h->data[i];
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}
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static void
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set_list (hash_table_int *h, uint16_t i, array_list al)
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{
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h->data[i] = al;
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}
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void
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hash_table_insert (hash_table ht, void *key, void *value)
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{
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hash_table_int *hti = extract_header (ht);
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uint16_t index = hti->hash (key);
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JERRY_ASSERT (index < hti->size);
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array_list list = get_list (hti, index);
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if (list == null_list)
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{
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list = array_list_init (bucket_size (hti));
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}
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uint8_t *bucket = (uint8_t *) jsp_mm_alloc (bucket_size (hti));
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memcpy (bucket, key, hti->key_size);
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memcpy (bucket + hti->key_size, value, hti->value_size);
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list = array_list_append (list, bucket);
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hti->data[index] = list;
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jsp_mm_free (bucket);
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}
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void *
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hash_table_lookup (hash_table ht, void *key)
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{
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JERRY_ASSERT (key != NULL);
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hash_table_int *h = extract_header (ht);
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uint16_t index = h->hash (key);
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array_list al = get_list (h, index);
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if (al == null_list)
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{
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return NULL;
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}
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for (uint16_t i = 0; i < array_list_len (al); i++)
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{
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uint8_t *bucket = (uint8_t*) array_list_element (al, i);
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JERRY_ASSERT (bucket != NULL);
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if (!memcmp (bucket, key, h->key_size))
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{
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return bucket + h->key_size;
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}
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}
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return NULL;
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}
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hash_table
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hash_table_init (uint8_t key_size, uint8_t value_size, uint16_t size,
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uint16_t (*hash) (void *))
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{
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hash_table_int *res = (hash_table_int *) jsp_mm_alloc (sizeof (hash_table_int));
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memset (res, 0, sizeof (hash_table_int));
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res->key_size = key_size;
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res->value_size = value_size;
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res->size = size;
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res->data = (array_list *) jsp_mm_alloc (size * sizeof (array_list));
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memset (res->data, 0, size * sizeof (array_list));
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res->hash = hash;
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return res;
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}
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void
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hash_table_free (hash_table ht)
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{
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hash_table_int *h = extract_header (ht);
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for (uint16_t i = 0; i < h->size; i++)
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{
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array_list al = get_list (h, i);
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if (al != null_list)
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{
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array_list_free (al);
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set_list (h, i, null_list);
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}
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}
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jsp_mm_free (h->data);
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jsp_mm_free (h);
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}
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