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996
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1 /*
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2 * BDSM2
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3 * Author: Adam Sawicki
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4 * http://www.regedit.risp.pl
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5 * mailto:regedit@risp.pl
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6 */
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7 #include "pch.hpp"
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8 #include <sstream>
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9 #include "Source.hpp"
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10
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11 string Source::Iterator::ToString() const
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12 {
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13 std::ostringstream ss;
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14 ss << "index: " << (unsigned)Index << ", row: " << Row << ", col: " << Col;
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15 return ss.str();
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16 }
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17
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18 void Source::Forward()
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19 {
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20 if (Peek() == '\r')
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21 {
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22 }
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23 else if (Peek() == '\n')
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24 {
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25 m_Index.Row++;
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26 m_Index.Col = 1;
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27 }
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28 else
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29 m_Index.Col++;
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30
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31 m_Index.Index++;
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32 }
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33
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34 char Source::Get()
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35 {
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36 char ch = Peek();
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37 Forward();
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38 return ch;
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39 }
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40
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41 Source::Source(const string *Src) : m_Src(Src), m_ErrIndexSaved(false)
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42 {
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43 m_Index.Index = 0;
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44 m_Index.Row = 1;
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45 m_Index.Col = 1;
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46 }
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47
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48 char Source::GetS()
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49 {
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50 if (End())
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51 SrcError("Unexpected end of file", ERR_PARSE);
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52 return Get();
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53 }
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54
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55 void Source::Skip()
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56 {
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57 char ch;
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58 while (!End())
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59 {
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60 ch = Peek();
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61 // Whitespace
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62 if (ch == ' ' || ch == '\t' || ch == '\v' || ch == '\r' || ch == '\n')
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63 Forward();
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64 // Comment
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65 else if (ch == '{')
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66 {
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67 Forward();
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68 for (;;)
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69 {
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70 if (End())
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71 SrcError("Unexpected end of comment", ERR_PARSE);
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72 ch = Peek();
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73 Forward();
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74 if (ch == '}')
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75 break;
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76 }
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77 }
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78 else
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79 break;
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80 }
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81 }
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82
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83 void Source::SrcError(const string &msg, ERR_PLACE place)
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84 {
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85 Error(msg + " (" + GetIterator().ToString() + ')', place);
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86 }
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