95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
/*
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** File: lexutils.hxx
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**
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** Description: Helper functions for MIDL lexer
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** Copyright (C) 1989-1999 Microsoft Corp.
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*/
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/* there is a warning 3 (type conversion) in the next line...
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it has something to do with istream::get(char&).
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*/
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#define ccgetc() (pbch?(pbch=0,ch):(cceof())?(char)0:((input_fileptr_G->get(ch),ch=='\n' )?(curr_line_G++,ch):(ch)))
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#define ccputbackc() (pbch=1)
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#define cceof() (input_fileptr_G->eof())
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typedef USHORT token_t;
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void StartImport();
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void CloseImport();
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void init_lex(void);
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token_t cnv_int(void);
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token_t cnv_hex(void);
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token_t cnv_octal(void);
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token_t cnv_float(void);
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long convert(char *ptr, short base);
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token_t name(void);
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token_t map_token(token_t);
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void lex_error(int);
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token_t lex(void);
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token_t comment(void);
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char convesc();
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extern short handle_import;
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#define AND '&'
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#define LBRACK '['
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#define RBRACK ']'
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#define LCURLY '{'
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#define RCURLY '}'
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#define LPAREN '('
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#define RPAREN ')'
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#define SEMI ';'
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#define COLON ':'
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#define COMMA ','
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#define DIV '/'
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#define EXCLAIM '!'
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#define MOD '%'
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#define PLUS '+'
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#define XOR '^'
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#define LT '<'
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#define GT '>'
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#define MINUS '-'
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#define MULT '*'
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#define ASSIGN '='
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#define OR '|'
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extern short curr_line_G;
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extern FILE * hFile_G;
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// chCached allows us to look two characters ahead instead
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// of one. If NewCCPutbackc is called once, the character
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// is put in chCached. If it's called twice, the character
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// that was previously in chCached is pushed back into the
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// stream and the second character is put into chCached.
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// Behavior is undefined if it's called a third time in succession.
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extern int chCached;
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// #define NewCCGetch() (char) (pImportCntrl->GetChar())
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inline
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char NewCCGetch()
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{
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char ch;
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if ( ( ch = (char) chCached ) != 0 )
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{
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chCached = 0;
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}
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else
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{
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if ( ( (ch = (char)getc(hFile_G) ) == EOF ) && feof(hFile_G) )
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return 0;
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}
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if ( ch == '\n' )
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curr_line_G++;
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return ch;
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}
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//#define NewCCputbackc(c) (char )(pImportCntrl->UnGetChar(c))
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extern
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char NewCCputbackc( char ch );
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