projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 30fdf114 LG |
1 | \r |
| 2 | /************************************************************/\r | |
| 3 | /* */\r | |
| 4 | /* Predefined char stream: Input from (c++) stream. */\r | |
| 5 | /* */\r | |
| 6 | /* By Hubert Holin (Hubert.Holin@Bigfoot.com), 1998. */\r | |
| 7 | /* */\r | |
| 8 | /* This is completely free stuff, do whatever you want with */\r | |
| fb0b35e0 | 9 | /* it (but then, I will take no responsibility for whatever */\r |
| 30fdf114 LG |
10 | /* may happen if you do either... caveat emptor!). */\r |
| 11 | /* */\r | |
| 12 | /************************************************************/\r | |
| 13 | \r | |
| 14 | #ifndef _DLG_STREAM_INPUT_H\r | |
| 15 | #define _DLG_STREAM_INPUT_H\r | |
| 16 | \r | |
| 17 | #include "pccts_istream.h"\r | |
| 18 | \r | |
| 19 | PCCTS_NAMESPACE_STD\r | |
| 20 | \r | |
| 21 | #ifndef DLGX_H\r | |
| 22 | #include "DLexerBase.h"\r | |
| 23 | #endif\r | |
| 24 | \r | |
| 25 | \r | |
| 26 | // NOTES: The semantics of the copy constructor\r | |
| fb0b35e0 | 27 | // and the affectation operator may be unwarranted...\r |
| 30fdf114 LG |
28 | // and the stream may not be reset.\r |
| 29 | //\r | |
| 30 | // It would have been so much nicer for nextChar()\r | |
| 31 | // to throw (of for the DLGInputStream to change status)\r | |
| fb0b35e0 | 32 | // upon hitting EOF than to return an "int"...\r |
| 30fdf114 LG |
33 | \r |
| 34 | template <\r | |
| 35 | class E,\r | |
| 36 | class T = ::std::char_traits<E>\r | |
| 37 | >\r | |
| 38 | class DLG_stream_input : public DLGInputStream\r | |
| 39 | {\r | |
| 40 | public:\r | |
| 41 | \r | |
| 42 | DLG_stream_input(::std::basic_istream<E,T> * p_input_stream)\r | |
| 43 | : input(p_input_stream)\r | |
| 44 | {\r | |
| 45 | // nothing to do!\r | |
| 46 | };\r | |
| 47 | \r | |
| 48 | DLG_stream_input(const DLG_stream_input & a_recopier)\r | |
| 49 | : input(a_recopier.input)\r | |
| 50 | {\r | |
| 51 | // nothing to do!\r | |
| 52 | };\r | |
| 53 | \r | |
| 54 | virtual ~DLG_stream_input()\r | |
| 55 | {\r | |
| 56 | this->purge(); // bloody templarized lookup...\r | |
| 57 | };\r | |
| 58 | \r | |
| 59 | DLG_stream_input operator = (const DLG_stream_input & a_affecter)\r | |
| 60 | {\r | |
| 61 | if (this != &a_affecter)\r | |
| 62 | {\r | |
| 63 | input = a_affecter.input;\r | |
| 64 | }\r | |
| 65 | \r | |
| 66 | return(*this);\r | |
| 67 | };\r | |
| 68 | \r | |
| 69 | virtual int nextChar()\r | |
| 70 | {\r | |
| 71 | E extracted_stuff;\r | |
| 72 | \r | |
| 73 | input->get(extracted_stuff);\r | |
| 74 | \r | |
| 75 | if (*input)\r | |
| 76 | {\r | |
| 77 | return(int(extracted_stuff));\r | |
| 78 | }\r | |
| 79 | else\r | |
| 80 | {\r | |
| 81 | return(EOF);\r | |
| 82 | }\r | |
| 83 | };\r | |
| 84 | \r | |
| 85 | protected:\r | |
| 86 | \r | |
| 87 | ::std::basic_istream<E,T> * input;\r | |
| 88 | \r | |
| 89 | private:\r | |
| 90 | \r | |
| 91 | void purge()\r | |
| 92 | {\r | |
| 93 | // nothing to do!\r | |
| 94 | };\r | |
| 95 | };\r | |
| 96 | \r | |
| 97 | #endif /* _DLG_STREAM_INPUT_H */\r | |
| 98 | \r |