/[m4]/m4/m4/syntax.c
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Diff of /m4/m4/syntax.c

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revision 1.4 by gary, Thu Jun 26 14:57:32 2003 UTC revision 1.5 by gary, Fri Jun 27 14:00:25 2003 UTC
# Line 79  Line 79 
79     M4_SYNTAX_ALPHA      Reads macro name     M4_SYNTAX_ALPHA      Reads macro name
80     M4_SYNTAX_LQUOTE     Reads all until balanced M4_SYNTAX_RQUOTE     M4_SYNTAX_LQUOTE     Reads all until balanced M4_SYNTAX_RQUOTE
81    
82     M4_SYNTAX_OTHER      and M4_SYNTAX_NUM     M4_SYNTAX_OTHER  }   Reads all M4_SYNTAX_OTHER, M4_SYNTAX_NUM
83                          Reads all M4_SYNTAX_OTHER and M4_SYNTAX_NUM     M4_SYNTAX_NUM    }   and M4_SYNTAX_DOLLAR
84       M4_SYNTAX_DOLLAR }
85    
86     M4_SYNTAX_SPACE      Reads all M4_SYNTAX_SPACE     M4_SYNTAX_SPACE      Reads all M4_SYNTAX_SPACE
87     M4_SYNTAX_ACTIVE     Returns a single char as a word     M4_SYNTAX_ACTIVE     Returns a single char as a word
88     the rest             Returned as a single char     the rest             Returned as a single char
89    
90     M4_SYNTAX_DOLLAR is not currently used.  The character $ is treated as a     The $ is not really a part of m4's input syntax in the sense that a
91     M4_SYNTAX_OTHER.  It could be done, but it will slow next_token () down     string is parsed equally whether there is a $ or not.  The character
92     a bit.  The $ is not really a part of m4's input syntax in the sense     $ is used by convention in user macros.  */
    that a string is parsed equally whether there is a $ or not.  The  
    character $ is used by convention in user macros.  */  
93    
94  static boolean check_is_macro_escaped (m4_syntax_table *syntax);  static boolean check_is_macro_escaped (m4_syntax_table *syntax);
95  static int add_syntax_attribute    (m4_syntax_table *syntax, int ch, int code);  static int add_syntax_attribute    (m4_syntax_table *syntax, int ch, int code);
# Line 109  m4_syntax_create (void) Line 109  m4_syntax_create (void)
109          add_syntax_attribute (syntax, ch, M4_SYNTAX_CLOSE);          add_syntax_attribute (syntax, ch, M4_SYNTAX_CLOSE);
110        else if (ch == ',')        else if (ch == ',')
111          add_syntax_attribute (syntax, ch, M4_SYNTAX_COMMA);          add_syntax_attribute (syntax, ch, M4_SYNTAX_COMMA);
112          else if (ch == '$')
113            add_syntax_attribute (syntax, ch, M4_SYNTAX_DOLLAR);
114        else if (ch == '=')        else if (ch == '=')
115          add_syntax_attribute (syntax, ch, M4_SYNTAX_ASSIGN);          add_syntax_attribute (syntax, ch, M4_SYNTAX_ASSIGN);
116        else if (isspace (ch))        else if (isspace (ch))
# Line 174  m4_syntax_code (char ch) Line 176  m4_syntax_code (char ch)
176      case ',': code = M4_SYNTAX_COMMA;  break;      case ',': code = M4_SYNTAX_COMMA;  break;
177      case '=': code = M4_SYNTAX_ASSIGN; break;      case '=': code = M4_SYNTAX_ASSIGN; break;
178      case '@': code = M4_SYNTAX_ESCAPE; break;      case '@': code = M4_SYNTAX_ESCAPE; break;
 #if 0                           /* not yet used */  
179      case '$': code = M4_SYNTAX_DOLLAR; break;      case '$': code = M4_SYNTAX_DOLLAR; break;
 #endif  
180    
181      case 'L': case 'l': code = M4_SYNTAX_LQUOTE; break;      case 'L': case 'l': code = M4_SYNTAX_LQUOTE; break;
182      case 'R': case 'r': code = M4_SYNTAX_RQUOTE; break;      case 'R': case 'r': code = M4_SYNTAX_RQUOTE; break;

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