Davi Souza / Mbed 2 deprecated pymite

python

Dependencies:   TSI mbed

Fork of pymite by Norimasa Okamoto

vm/bytearray.c@0:65f1469d6bfb, 2013-03-02 (annotated)

Committer:
va009039
Date:
Sat Mar 02 11:54:20 2013 +0000
Revision:
0:65f1469d6bfb
Child:
12:d27ad05214e3
first commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 0:65f1469d6bfb 1 /*
va009039 0:65f1469d6bfb 2 # This file is Copyright 2010 Dean Hall.
va009039 0:65f1469d6bfb 3 # This file is part of the PyMite VM.
va009039 0:65f1469d6bfb 4 # This file is licensed under the MIT License.
va009039 0:65f1469d6bfb 5 # See the LICENSE file for details.
va009039 0:65f1469d6bfb 6 */
va009039 0:65f1469d6bfb 7
va009039 0:65f1469d6bfb 8
va009039 0:65f1469d6bfb 9 #undef __FILE_ID__
va009039 0:65f1469d6bfb 10 #define __FILE_ID__ 0x19
va009039 0:65f1469d6bfb 11
va009039 0:65f1469d6bfb 12
va009039 0:65f1469d6bfb 13 /**
va009039 0:65f1469d6bfb 14 * \file
va009039 0:65f1469d6bfb 15 * \brief VM Bytearray Type
va009039 0:65f1469d6bfb 16 *
va009039 0:65f1469d6bfb 17 * VM Bytearray object type operations.
va009039 0:65f1469d6bfb 18 */
va009039 0:65f1469d6bfb 19
va009039 0:65f1469d6bfb 20 #include "pm.h"
va009039 0:65f1469d6bfb 21 #ifdef HAVE_BYTEARRAY
va009039 0:65f1469d6bfb 22
va009039 0:65f1469d6bfb 23
va009039 0:65f1469d6bfb 24 #define ROUND_UP_TO_MUL_OF_FOUR(n) n = (((n) + 3) & ~3)
va009039 0:65f1469d6bfb 25
va009039 0:65f1469d6bfb 26
va009039 0:65f1469d6bfb 27 /* Returns a container that can hold at least n bytes */
va009039 0:65f1469d6bfb 28 static
va009039 0:65f1469d6bfb 29 PmReturn_t
va009039 0:65f1469d6bfb 30 bytes_new(int16_t n, pPmObj_t *r_pobj)
va009039 0:65f1469d6bfb 31 {
va009039 0:65f1469d6bfb 32 PmReturn_t retval = PM_RET_OK;
va009039 0:65f1469d6bfb 33 pPmBytes_t pb = C_NULL;
va009039 0:65f1469d6bfb 34
va009039 0:65f1469d6bfb 35 ROUND_UP_TO_MUL_OF_FOUR(n);
va009039 0:65f1469d6bfb 36
va009039 0:65f1469d6bfb 37 /* Allocate a container */
va009039 0:65f1469d6bfb 38 retval = heap_getChunk(sizeof(PmBytes_t) + n, (uint8_t **)&pb);
va009039 0:65f1469d6bfb 39 PM_RETURN_IF_ERROR(retval);
va009039 0:65f1469d6bfb 40 OBJ_SET_TYPE(pb, OBJ_TYPE_BYS);
va009039 0:65f1469d6bfb 41 pb->length = n;
va009039 0:65f1469d6bfb 42
va009039 0:65f1469d6bfb 43 *r_pobj = (pPmObj_t)pb;
va009039 0:65f1469d6bfb 44 return retval;
va009039 0:65f1469d6bfb 45 }
va009039 0:65f1469d6bfb 46
va009039 0:65f1469d6bfb 47
va009039 0:65f1469d6bfb 48 /* Returns the int or one-char string as a byte */
va009039 0:65f1469d6bfb 49 static
va009039 0:65f1469d6bfb 50 PmReturn_t
va009039 0:65f1469d6bfb 51 bytes_getByteFromObj(pPmObj_t pobj, uint8_t *b)
va009039 0:65f1469d6bfb 52 {
va009039 0:65f1469d6bfb 53 PmReturn_t retval = PM_RET_OK;
va009039 0:65f1469d6bfb 54
va009039 0:65f1469d6bfb 55 if (OBJ_GET_TYPE(pobj) == OBJ_TYPE_INT)
va009039 0:65f1469d6bfb 56 {
va009039 0:65f1469d6bfb 57 if ((((pPmInt_t)pobj)->val > 255) || (((pPmInt_t)pobj)->val < 0))
va009039 0:65f1469d6bfb 58 {
va009039 0:65f1469d6bfb 59 PM_RAISE(retval, PM_RET_EX_VAL);
va009039 0:65f1469d6bfb 60 return retval;
va009039 0:65f1469d6bfb 61 }
va009039 0:65f1469d6bfb 62
va009039 0:65f1469d6bfb 63 *b = (uint8_t)((pPmInt_t)pobj)->val;
va009039 0:65f1469d6bfb 64 }
va009039 0:65f1469d6bfb 65
va009039 0:65f1469d6bfb 66 else if (OBJ_GET_TYPE(pobj) == OBJ_TYPE_STR)
va009039 0:65f1469d6bfb 67 {
va009039 0:65f1469d6bfb 68 if (((pPmString_t)pobj)->length != 1)
va009039 0:65f1469d6bfb 69 {
va009039 0:65f1469d6bfb 70 PM_RAISE(retval, PM_RET_EX_VAL);
va009039 0:65f1469d6bfb 71 return retval;
va009039 0:65f1469d6bfb 72 }
va009039 0:65f1469d6bfb 73 *b = ((pPmString_t)pobj)->val[0];
va009039 0:65f1469d6bfb 74 }
va009039 0:65f1469d6bfb 75
va009039 0:65f1469d6bfb 76 else
va009039 0:65f1469d6bfb 77 {
va009039 0:65f1469d6bfb 78 PM_RAISE(retval, PM_RET_EX_TYPE);
va009039 0:65f1469d6bfb 79 }
va009039 0:65f1469d6bfb 80 return retval;
va009039 0:65f1469d6bfb 81 }
va009039 0:65f1469d6bfb 82
va009039 0:65f1469d6bfb 83
va009039 0:65f1469d6bfb 84 PmReturn_t
va009039 0:65f1469d6bfb 85 bytearray_new(pPmObj_t pobj, pPmObj_t *r_pobj)
va009039 0:65f1469d6bfb 86 {
va009039 0:65f1469d6bfb 87 PmReturn_t retval = PM_RET_OK;
va009039 0:65f1469d6bfb 88 pPmBytearray_t pba = C_NULL;
va009039 0:65f1469d6bfb 89 pPmBytes_t pb = C_NULL;
va009039 0:65f1469d6bfb 90 pPmObj_t pitem;
va009039 0:65f1469d6bfb 91 int32_t i;
va009039 0:65f1469d6bfb 92 int16_t n;
va009039 0:65f1469d6bfb 93 uint8_t b;
va009039 0:65f1469d6bfb 94 uint8_t objid;
va009039 0:65f1469d6bfb 95
va009039 0:65f1469d6bfb 96 /* If object is an instance, get the thing it is containing */
va009039 0:65f1469d6bfb 97 if (OBJ_GET_TYPE(pobj) == OBJ_TYPE_CLI)
va009039 0:65f1469d6bfb 98 {
va009039 0:65f1469d6bfb 99 retval = dict_getItem((pPmObj_t)((pPmInstance_t)pobj)->cli_attrs,
va009039 0:65f1469d6bfb 100 PM_NONE,
va009039 0:65f1469d6bfb 101 (pPmObj_t *)&pba);
va009039 0:65f1469d6bfb 102 PM_RETURN_IF_ERROR(retval);
va009039 0:65f1469d6bfb 103 pobj = (pPmObj_t)pba;
va009039 0:65f1469d6bfb 104 }
va009039 0:65f1469d6bfb 105
va009039 0:65f1469d6bfb 106 /* Get the requested length of the new bytearray */
va009039 0:65f1469d6bfb 107 switch (OBJ_GET_TYPE(pobj))
va009039 0:65f1469d6bfb 108 {
va009039 0:65f1469d6bfb 109 case OBJ_TYPE_INT:
va009039 0:65f1469d6bfb 110 i = ((pPmInt_t)pobj)->val;
va009039 0:65f1469d6bfb 111 if ((i < 0) || (i > 65535))
va009039 0:65f1469d6bfb 112 {
va009039 0:65f1469d6bfb 113 PM_RAISE(retval, PM_RET_EX_VAL);
va009039 0:65f1469d6bfb 114 return retval;
va009039 0:65f1469d6bfb 115 }
va009039 0:65f1469d6bfb 116 n = i;
va009039 0:65f1469d6bfb 117 break;
va009039 0:65f1469d6bfb 118
va009039 0:65f1469d6bfb 119 case OBJ_TYPE_STR:
va009039 0:65f1469d6bfb 120 n = ((pPmString_t)pobj)->length;
va009039 0:65f1469d6bfb 121 break;
va009039 0:65f1469d6bfb 122
va009039 0:65f1469d6bfb 123 case OBJ_TYPE_LST:
va009039 0:65f1469d6bfb 124 n = ((pPmList_t)pobj)->length;
va009039 0:65f1469d6bfb 125 break;
va009039 0:65f1469d6bfb 126
va009039 0:65f1469d6bfb 127 case OBJ_TYPE_TUP:
va009039 0:65f1469d6bfb 128 n = ((pPmTuple_t)pobj)->length;
va009039 0:65f1469d6bfb 129 break;
va009039 0:65f1469d6bfb 130
va009039 0:65f1469d6bfb 131 case OBJ_TYPE_BYA:
va009039 0:65f1469d6bfb 132 n = ((pPmBytearray_t)pobj)->length;
va009039 0:65f1469d6bfb 133 break;
va009039 0:65f1469d6bfb 134
va009039 0:65f1469d6bfb 135 default:
va009039 0:65f1469d6bfb 136 PM_RAISE(retval, PM_RET_EX_TYPE);
va009039 0:65f1469d6bfb 137 return retval;
va009039 0:65f1469d6bfb 138 }
va009039 0:65f1469d6bfb 139
va009039 0:65f1469d6bfb 140 /* Allocate a bytearray */
va009039 0:65f1469d6bfb 141 retval = heap_getChunk(sizeof(PmBytearray_t), (uint8_t **)&pba);
va009039 0:65f1469d6bfb 142 PM_RETURN_IF_ERROR(retval);
va009039 0:65f1469d6bfb 143 OBJ_SET_TYPE(pba, OBJ_TYPE_BYA);
va009039 0:65f1469d6bfb 144 pba->length = n;
va009039 0:65f1469d6bfb 145 pba->val = C_NULL;
va009039 0:65f1469d6bfb 146
va009039 0:65f1469d6bfb 147 /* Allocate the bytes container */
va009039 0:65f1469d6bfb 148 heap_gcPushTempRoot((pPmObj_t)pba, &objid);
va009039 0:65f1469d6bfb 149 retval = bytes_new(n, (pPmObj_t *)&pb);
va009039 0:65f1469d6bfb 150 heap_gcPopTempRoot(objid);
va009039 0:65f1469d6bfb 151 PM_RETURN_IF_ERROR(retval);
va009039 0:65f1469d6bfb 152 pba->val = pb;
va009039 0:65f1469d6bfb 153
va009039 0:65f1469d6bfb 154 /* Fill the bytes */
va009039 0:65f1469d6bfb 155 switch (OBJ_GET_TYPE(pobj))
va009039 0:65f1469d6bfb 156 {
va009039 0:65f1469d6bfb 157 case OBJ_TYPE_INT:
va009039 0:65f1469d6bfb 158 sli_memset((unsigned char *)&(pb->val), '\0', n);
va009039 0:65f1469d6bfb 159 break;
va009039 0:65f1469d6bfb 160
va009039 0:65f1469d6bfb 161 case OBJ_TYPE_BYA:
va009039 0:65f1469d6bfb 162 pitem = (pPmObj_t)((pPmBytearray_t)pobj)->val;
va009039 0:65f1469d6bfb 163 sli_memcpy(&(pb->val[0]), &(((pPmBytes_t)pitem)->val[0]), n);
va009039 0:65f1469d6bfb 164 break;
va009039 0:65f1469d6bfb 165
va009039 0:65f1469d6bfb 166 case OBJ_TYPE_STR:
va009039 0:65f1469d6bfb 167 sli_memcpy(&(pb->val[0]), &(((pPmString_t)pobj)->val[0]), n);
va009039 0:65f1469d6bfb 168 break;
va009039 0:65f1469d6bfb 169
va009039 0:65f1469d6bfb 170 case OBJ_TYPE_LST:
va009039 0:65f1469d6bfb 171 case OBJ_TYPE_TUP:
va009039 0:65f1469d6bfb 172 for (i = 0; i < n; i++)
va009039 0:65f1469d6bfb 173 {
va009039 0:65f1469d6bfb 174 retval = seq_getSubscript(pobj, i, &pitem);
va009039 0:65f1469d6bfb 175 PM_RETURN_IF_ERROR(retval);
va009039 0:65f1469d6bfb 176 retval = bytes_getByteFromObj(pitem, &b);
va009039 0:65f1469d6bfb 177 PM_RETURN_IF_ERROR(retval);
va009039 0:65f1469d6bfb 178 pb->val[i] = b;
va009039 0:65f1469d6bfb 179 }
va009039 0:65f1469d6bfb 180 break;
va009039 0:65f1469d6bfb 181 }
va009039 0:65f1469d6bfb 182
va009039 0:65f1469d6bfb 183 *r_pobj = (pPmObj_t)pba;
va009039 0:65f1469d6bfb 184 return retval;
va009039 0:65f1469d6bfb 185 }
va009039 0:65f1469d6bfb 186
va009039 0:65f1469d6bfb 187
va009039 0:65f1469d6bfb 188 PmReturn_t
va009039 0:65f1469d6bfb 189 bytearray_getItem(pPmObj_t pobj, int16_t index, pPmObj_t *r_pobj)
va009039 0:65f1469d6bfb 190 {
va009039 0:65f1469d6bfb 191 PmReturn_t retval = PM_RET_OK;
va009039 0:65f1469d6bfb 192 pPmBytearray_t pba;
va009039 0:65f1469d6bfb 193 pPmBytes_t pb;
va009039 0:65f1469d6bfb 194 int32_t n;
va009039 0:65f1469d6bfb 195
va009039 0:65f1469d6bfb 196 pba = (pPmBytearray_t)pobj;
va009039 0:65f1469d6bfb 197
va009039 0:65f1469d6bfb 198 /* Adjust a negative index */
va009039 0:65f1469d6bfb 199 if (index < 0)
va009039 0:65f1469d6bfb 200 {
va009039 0:65f1469d6bfb 201 index += pba->length;
va009039 0:65f1469d6bfb 202 }
va009039 0:65f1469d6bfb 203
va009039 0:65f1469d6bfb 204 /* Check the bounds of the index */
va009039 0:65f1469d6bfb 205 if ((index < 0) || (index >= pba->length))
va009039 0:65f1469d6bfb 206 {
va009039 0:65f1469d6bfb 207 PM_RAISE(retval, PM_RET_EX_INDX);
va009039 0:65f1469d6bfb 208 return retval;
va009039 0:65f1469d6bfb 209 }
va009039 0:65f1469d6bfb 210
va009039 0:65f1469d6bfb 211 /* Create int from byte at index */
va009039 0:65f1469d6bfb 212 pb = pba->val;
va009039 0:65f1469d6bfb 213 n = (int32_t)pb->val[index];
va009039 0:65f1469d6bfb 214 retval = int_new(n, r_pobj);
va009039 0:65f1469d6bfb 215
va009039 0:65f1469d6bfb 216 return retval;
va009039 0:65f1469d6bfb 217 }
va009039 0:65f1469d6bfb 218
va009039 0:65f1469d6bfb 219
va009039 0:65f1469d6bfb 220 PmReturn_t
va009039 0:65f1469d6bfb 221 bytearray_setItem(pPmObj_t pba, int16_t index, pPmObj_t pobj)
va009039 0:65f1469d6bfb 222 {
va009039 0:65f1469d6bfb 223 PmReturn_t retval;
va009039 0:65f1469d6bfb 224 pPmBytes_t pb;
va009039 0:65f1469d6bfb 225 uint8_t b = 0;
va009039 0:65f1469d6bfb 226
va009039 0:65f1469d6bfb 227 /* Adjust a negative index */
va009039 0:65f1469d6bfb 228 if (index < 0)
va009039 0:65f1469d6bfb 229 {
va009039 0:65f1469d6bfb 230 index += ((pPmBytearray_t)pba)->length;
va009039 0:65f1469d6bfb 231 }
va009039 0:65f1469d6bfb 232
va009039 0:65f1469d6bfb 233 /* Check the bounds of the index */
va009039 0:65f1469d6bfb 234 if ((index < 0) || (index >= ((pPmBytearray_t)pba)->length))
va009039 0:65f1469d6bfb 235 {
va009039 0:65f1469d6bfb 236 PM_RAISE(retval, PM_RET_EX_INDX);
va009039 0:65f1469d6bfb 237 return retval;
va009039 0:65f1469d6bfb 238 }
va009039 0:65f1469d6bfb 239
va009039 0:65f1469d6bfb 240 /* Set the item */
va009039 0:65f1469d6bfb 241 retval = bytes_getByteFromObj(pobj, &b);
va009039 0:65f1469d6bfb 242 pb = ((pPmBytearray_t)pba)->val;
va009039 0:65f1469d6bfb 243 pb->val[index] = b;
va009039 0:65f1469d6bfb 244
va009039 0:65f1469d6bfb 245 return retval;
va009039 0:65f1469d6bfb 246 }
va009039 0:65f1469d6bfb 247
va009039 0:65f1469d6bfb 248
va009039 0:65f1469d6bfb 249 #ifdef HAVE_PRINT
va009039 0:65f1469d6bfb 250 PmReturn_t
va009039 0:65f1469d6bfb 251 bytearray_print(pPmObj_t pobj)
va009039 0:65f1469d6bfb 252 {
va009039 0:65f1469d6bfb 253 PmReturn_t retval;
va009039 0:65f1469d6bfb 254 pPmBytes_t pb;
va009039 0:65f1469d6bfb 255
va009039 0:65f1469d6bfb 256 obj_print(PM_BYTEARRAY_STR, C_FALSE, C_FALSE);
va009039 0:65f1469d6bfb 257 plat_putByte('(');
va009039 0:65f1469d6bfb 258 plat_putByte('b');
va009039 0:65f1469d6bfb 259 pb = ((pPmBytearray_t)pobj)->val;
va009039 0:65f1469d6bfb 260 retval = string_printFormattedBytes(&(pb->val[0]),
va009039 0:65f1469d6bfb 261 C_TRUE,
va009039 0:65f1469d6bfb 262 ((pPmBytearray_t)pobj)->length);
va009039 0:65f1469d6bfb 263 plat_putByte(')');
va009039 0:65f1469d6bfb 264 return retval;
va009039 0:65f1469d6bfb 265 }
va009039 0:65f1469d6bfb 266 #endif /* HAVE_PRINT */
va009039 0:65f1469d6bfb 267 #endif /* HAVE_BYTEARRAY */