diff options
Diffstat (limited to 'BaseTools/Source/C/VfrCompile/Pccts/h/DLG_stream_input.h')
-rw-r--r-- | BaseTools/Source/C/VfrCompile/Pccts/h/DLG_stream_input.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/BaseTools/Source/C/VfrCompile/Pccts/h/DLG_stream_input.h b/BaseTools/Source/C/VfrCompile/Pccts/h/DLG_stream_input.h new file mode 100644 index 0000000000..d2147f5217 --- /dev/null +++ b/BaseTools/Source/C/VfrCompile/Pccts/h/DLG_stream_input.h @@ -0,0 +1,98 @@ +
+/************************************************************/
+/* */
+/* Predefined char stream: Input from (c++) stream. */
+/* */
+/* By Hubert Holin (Hubert.Holin@Bigfoot.com), 1998. */
+/* */
+/* This is completely free stuff, do whatever you want with */
+/* it (but then, I will take no responsability for whatever */
+/* may happen if you do either... caveat emptor!). */
+/* */
+/************************************************************/
+
+#ifndef _DLG_STREAM_INPUT_H
+#define _DLG_STREAM_INPUT_H
+
+#include "pccts_istream.h"
+
+PCCTS_NAMESPACE_STD
+
+#ifndef DLGX_H
+#include "DLexerBase.h"
+#endif
+
+
+// NOTES: The semantics of the copy constructor
+// and the affectation operator may be unwaranted...
+// and the stream may not be reset.
+//
+// It would have been so much nicer for nextChar()
+// to throw (of for the DLGInputStream to change status)
+// upon hiting EOF than to return an "int"...
+
+template <
+ class E,
+ class T = ::std::char_traits<E>
+ >
+class DLG_stream_input : public DLGInputStream
+{
+public:
+
+ DLG_stream_input(::std::basic_istream<E,T> * p_input_stream)
+ : input(p_input_stream)
+ {
+ // nothing to do!
+ };
+
+ DLG_stream_input(const DLG_stream_input & a_recopier)
+ : input(a_recopier.input)
+ {
+ // nothing to do!
+ };
+
+ virtual ~DLG_stream_input()
+ {
+ this->purge(); // bloody templarized lookup...
+ };
+
+ DLG_stream_input operator = (const DLG_stream_input & a_affecter)
+ {
+ if (this != &a_affecter)
+ {
+ input = a_affecter.input;
+ }
+
+ return(*this);
+ };
+
+ virtual int nextChar()
+ {
+ E extracted_stuff;
+
+ input->get(extracted_stuff);
+
+ if (*input)
+ {
+ return(int(extracted_stuff));
+ }
+ else
+ {
+ return(EOF);
+ }
+ };
+
+protected:
+
+ ::std::basic_istream<E,T> * input;
+
+private:
+
+ void purge()
+ {
+ // nothing to do!
+ };
+};
+
+#endif /* _DLG_STREAM_INPUT_H */
+
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