Mateusz Garwol / Mbed 2 deprecated 2_5

AGH UST MBED part 2

Dependencies:   LCD_DISCO_F429ZI mbed BSP_DISCO_F429ZI

decoder.cpp@6:06ff453bb16e, 2020-05-22 (annotated)

Committer:
matis755
Date:
Fri May 22 07:30:59 2020 +0000
Revision:
6:06ff453bb16e
Parent:
5:3c19c3ae6286
Child:
7:34a9bd9d3093
Use standard C functions

Who changed what in which revision?

UserRevisionLine numberNew contents of line
matis755 4:e48aee3e8d09 1 #include "decoder.h"
matis755 4:e48aee3e8d09 2
matis755 4:e48aee3e8d09 3
matis755 4:e48aee3e8d09 4 struct Keyword asKeywordList[MAX_KEYWORD_NR] = {
matis755 4:e48aee3e8d09 5 {ID, "id"},
matis755 4:e48aee3e8d09 6 {CLB, "callib"},
matis755 4:e48aee3e8d09 7 {GT, "goto"},
matis755 4:e48aee3e8d09 8 {ST, "step"},
matis755 4:e48aee3e8d09 9 };
matis755 4:e48aee3e8d09 10
matis755 4:e48aee3e8d09 11 enum Result { OK, NOK };
matis755 4:e48aee3e8d09 12
matis755 4:e48aee3e8d09 13
matis755 4:e48aee3e8d09 14 void Decoder::ReplaceCharactersInString(char pcString[],char cOldChar,char cNewChar){
matis755 4:e48aee3e8d09 15
matis755 4:e48aee3e8d09 16 unsigned char ucCharCounter;
matis755 4:e48aee3e8d09 17
matis755 4:e48aee3e8d09 18 for(ucCharCounter=0;pcString[ucCharCounter]!='\0';ucCharCounter++){
matis755 4:e48aee3e8d09 19 if(pcString[ucCharCounter] == cOldChar) pcString[ucCharCounter] = cNewChar;
matis755 4:e48aee3e8d09 20 }
matis755 4:e48aee3e8d09 21 }
matis755 6:06ff453bb16e 22
matis755 4:e48aee3e8d09 23 unsigned char Decoder::ucFindTokensInString(char *pcString){
matis755 4:e48aee3e8d09 24
matis755 4:e48aee3e8d09 25 unsigned char ucTokenPointer;
matis755 4:e48aee3e8d09 26 unsigned char ucDelimiterCounter;
matis755 4:e48aee3e8d09 27 char cCurrentChar;
matis755 4:e48aee3e8d09 28 enum State {TOKEN, DELIMITER};
matis755 4:e48aee3e8d09 29 enum State eState = DELIMITER;
matis755 4:e48aee3e8d09 30 ucDelimiterCounter = 0;
matis755 4:e48aee3e8d09 31
matis755 4:e48aee3e8d09 32 for(ucTokenPointer=0;;ucTokenPointer++){
matis755 4:e48aee3e8d09 33 cCurrentChar = pcString[ucTokenPointer];
matis755 4:e48aee3e8d09 34 switch(eState){
matis755 4:e48aee3e8d09 35 case DELIMITER:
matis755 4:e48aee3e8d09 36 if(cCurrentChar == '\0')
matis755 4:e48aee3e8d09 37 return ucDelimiterCounter;
matis755 4:e48aee3e8d09 38 else if(cCurrentChar == ' ') {}
matis755 4:e48aee3e8d09 39 else {
matis755 4:e48aee3e8d09 40 eState = TOKEN;
matis755 4:e48aee3e8d09 41 asToken[ucDelimiterCounter].uValue.pcString = pcString+ucTokenPointer;
matis755 4:e48aee3e8d09 42 ucDelimiterCounter++;
matis755 4:e48aee3e8d09 43 }
matis755 4:e48aee3e8d09 44 break;
matis755 4:e48aee3e8d09 45 case TOKEN:
matis755 4:e48aee3e8d09 46 if(cCurrentChar == '\0')
matis755 4:e48aee3e8d09 47 return ucDelimiterCounter;
matis755 4:e48aee3e8d09 48 else if(ucDelimiterCounter == MAX_TOKEN_NR)
matis755 4:e48aee3e8d09 49 return ucDelimiterCounter;
matis755 4:e48aee3e8d09 50 else if(cCurrentChar != ' ') {}
matis755 4:e48aee3e8d09 51 else
matis755 4:e48aee3e8d09 52 eState = DELIMITER;
matis755 4:e48aee3e8d09 53 break;
matis755 4:e48aee3e8d09 54 }
matis755 4:e48aee3e8d09 55 }
matis755 4:e48aee3e8d09 56 }
matis755 4:e48aee3e8d09 57
matis755 4:e48aee3e8d09 58 enum Result Decoder::eStringToKeyword (char pcStr[],enum KeywordCode *peKeywordCode){
matis755 4:e48aee3e8d09 59
matis755 4:e48aee3e8d09 60 unsigned char ucTokenCounter;
matis755 4:e48aee3e8d09 61
matis755 4:e48aee3e8d09 62 for(ucTokenCounter=0;ucTokenCounter<MAX_KEYWORD_NR;ucTokenCounter++){
matis755 4:e48aee3e8d09 63 if (!strcmp(pcStr, asKeywordList[ucTokenCounter].cString)) {
matis755 4:e48aee3e8d09 64 *peKeywordCode = asKeywordList[ucTokenCounter].eCode;
matis755 4:e48aee3e8d09 65 return OK;
matis755 4:e48aee3e8d09 66 }
matis755 4:e48aee3e8d09 67 }
matis755 4:e48aee3e8d09 68 return NOK;
matis755 4:e48aee3e8d09 69 }
matis755 4:e48aee3e8d09 70
matis755 4:e48aee3e8d09 71 void Decoder::DecodeTokens(unsigned char ucTokenCnt){
matis755 4:e48aee3e8d09 72
matis755 4:e48aee3e8d09 73 unsigned char ucTokenCounter;
matis755 4:e48aee3e8d09 74 Token* tValue;
matis755 4:e48aee3e8d09 75
matis755 4:e48aee3e8d09 76 for(ucTokenCounter=0;ucTokenCounter<ucTokenCnt;ucTokenCounter++){
matis755 4:e48aee3e8d09 77 tValue = &asToken[ucTokenCounter];
matis755 4:e48aee3e8d09 78 if (eStringToKeyword(tValue->uValue.pcString,&tValue->uValue.eKeyword) == OK) tValue->eType = KEYWORD;
matis755 6:06ff453bb16e 79 else if ((int)strtol(tValue->uValue.pcString, NULL, 0)) {
matis755 6:06ff453bb16e 80 tValue->uValue.uiNumber = (int)strtol(tValue->uValue.pcString, NULL, 0);
matis755 6:06ff453bb16e 81 tValue->eType = NUMBER;
matis755 6:06ff453bb16e 82 }
matis755 4:e48aee3e8d09 83 else tValue->eType = STRING;
matis755 4:e48aee3e8d09 84 }
matis755 4:e48aee3e8d09 85 }
matis755 4:e48aee3e8d09 86
matis755 4:e48aee3e8d09 87 void Decoder::DecodeMsg(char *pcString){
matis755 4:e48aee3e8d09 88
matis755 4:e48aee3e8d09 89 ucTokenCnt = ucFindTokensInString(pcString);
matis755 4:e48aee3e8d09 90 ReplaceCharactersInString(pcString,' ','\0');
matis755 4:e48aee3e8d09 91 DecodeTokens(ucTokenCnt);
matis755 4:e48aee3e8d09 92 }
matis755 4:e48aee3e8d09 93
matis755 4:e48aee3e8d09 94 enum TokenType Decoder::eGetTokenType(unsigned char ucIdx) {
matis755 4:e48aee3e8d09 95 return asToken[ucIdx].eType;
matis755 4:e48aee3e8d09 96 }
matis755 4:e48aee3e8d09 97
matis755 4:e48aee3e8d09 98 unsigned char Decoder::GetTokenCnt(void) {
matis755 4:e48aee3e8d09 99 return ucTokenCnt;
matis755 4:e48aee3e8d09 100 }
matis755 4:e48aee3e8d09 101
matis755 4:e48aee3e8d09 102 enum KeywordCode Decoder::eGetKeyword(unsigned char ucIdx) {
matis755 4:e48aee3e8d09 103 return asToken[ucIdx].uValue.eKeyword;
matis755 4:e48aee3e8d09 104 }
matis755 5:3c19c3ae6286 105
matis755 5:3c19c3ae6286 106 unsigned int Decoder::uiGetNumber(unsigned char ucIdx) {
matis755 5:3c19c3ae6286 107 return asToken[ucIdx].uValue.uiNumber;
matis755 5:3c19c3ae6286 108 }