示例#1
0
static int yylook(void) {

  int tok = 0;

  while (1) {
    if ((tok = Scanner_token(scan)) == 0)
      return 0;
    if (tok == SWIG_TOKEN_ERROR)
      return 0;
    cparse_start_line = Scanner_start_line(scan);
    cparse_line = Scanner_line(scan);
    cparse_file = Scanner_file(scan);

    switch(tok) {
    case SWIG_TOKEN_ID:
      return ID;
    case SWIG_TOKEN_LPAREN: 
      return LPAREN;
    case SWIG_TOKEN_RPAREN: 
      return RPAREN;
    case SWIG_TOKEN_SEMI:
      return SEMI;
    case SWIG_TOKEN_COMMA:
      return COMMA;
    case SWIG_TOKEN_STAR:
      return STAR;
    case SWIG_TOKEN_RBRACE:
      num_brace--;
      if (num_brace < 0) {
	Swig_error(cparse_file, cparse_line, "Syntax error. Extraneous '}'\n");
	num_brace = 0;
      } else {
	return RBRACE;
      }
      break;
    case SWIG_TOKEN_LBRACE:
      last_brace = num_brace;
      num_brace++;
      return LBRACE;
    case SWIG_TOKEN_EQUAL:
      return EQUAL;
    case SWIG_TOKEN_EQUALTO:
      return EQUALTO;
    case SWIG_TOKEN_PLUS:
      return PLUS;
    case SWIG_TOKEN_MINUS:
      return MINUS;
    case SWIG_TOKEN_SLASH:
      return SLASH;
    case SWIG_TOKEN_AND:
      return AND;
    case SWIG_TOKEN_LAND:
      return LAND;
    case SWIG_TOKEN_OR:
      return OR;
    case SWIG_TOKEN_LOR:
      return LOR;
    case SWIG_TOKEN_XOR:
      return XOR;
    case SWIG_TOKEN_NOT:
      return NOT;
    case SWIG_TOKEN_LNOT:
      return LNOT;
    case SWIG_TOKEN_NOTEQUAL:
      return NOTEQUALTO;
    case SWIG_TOKEN_LBRACKET:
      return LBRACKET;
    case SWIG_TOKEN_RBRACKET:
      return RBRACKET;
    case SWIG_TOKEN_QUESTION:
      return QUESTIONMARK;
    case SWIG_TOKEN_LESSTHAN:
      return LESSTHAN;
    case SWIG_TOKEN_LTEQUAL:
      return LESSTHANOREQUALTO;
    case SWIG_TOKEN_LSHIFT:
      return LSHIFT;
    case SWIG_TOKEN_GREATERTHAN:
      return GREATERTHAN;
    case SWIG_TOKEN_GTEQUAL:
      return GREATERTHANOREQUALTO;
    case SWIG_TOKEN_RSHIFT:
      return RSHIFT;
    case SWIG_TOKEN_PERIOD:
      return PERIOD;
    case SWIG_TOKEN_MODULO:
      return MODULO;
    case SWIG_TOKEN_COLON:
      return COLON;
    case SWIG_TOKEN_DCOLONSTAR:
      return DSTAR;
      
    case SWIG_TOKEN_DCOLON:
      {
	int nexttok = Scanner_token(scan);
	if (nexttok == SWIG_TOKEN_STAR) {
	  return DSTAR;
	} else if (nexttok == SWIG_TOKEN_NOT) {
	  return DCNOT;
	} else {
	  Scanner_pushtoken(scan,nexttok,Scanner_text(scan));
	  if (!last_id) {
	    scanner_next_token(DCOLON);
	    return NONID;
	  } else {
	    return DCOLON;
	  }
	}
      }
      break;
      
      /* Look for multi-character sequences */
      
    case SWIG_TOKEN_RSTRING:
      yylval.type = NewString(Scanner_text(scan));
      return TYPE_RAW;
      
    case SWIG_TOKEN_STRING:
      yylval.id = Swig_copy_string(Char(Scanner_text(scan)));
      return STRING;
      
    case SWIG_TOKEN_CHAR:
      yylval.str = NewString(Scanner_text(scan));
      if (Len(yylval.str) == 0) {
	Swig_error(cparse_file, cparse_line, "Empty character constant\n");
	Printf(stdout,"%d\n", Len(Scanner_text(scan)));
      }
      return CHARCONST;
      
      /* Numbers */
      
    case SWIG_TOKEN_INT:
      return NUM_INT;
      
    case SWIG_TOKEN_UINT:
      return NUM_UNSIGNED;
      
    case SWIG_TOKEN_LONG:
      return NUM_LONG;
      
    case SWIG_TOKEN_ULONG:
      return NUM_ULONG;
      
    case SWIG_TOKEN_LONGLONG:
      return NUM_LONGLONG;
      
    case SWIG_TOKEN_ULONGLONG:
      return NUM_ULONGLONG;
      
    case SWIG_TOKEN_DOUBLE:
    case SWIG_TOKEN_FLOAT:
      return NUM_FLOAT;
      
    case SWIG_TOKEN_BOOL:
      return NUM_BOOL;
      
    case SWIG_TOKEN_POUND:
      Scanner_skip_line(scan);
      yylval.id = Swig_copy_string(Char(Scanner_text(scan)));
      return POUND;
      break;
      
    case SWIG_TOKEN_CODEBLOCK:
      yylval.str = NewString(Scanner_text(scan));
      return HBLOCK;
      
    case SWIG_TOKEN_COMMENT:
      {
	String *cmt = Scanner_text(scan);
	char *loc = Char(cmt);
	if ((strncmp(loc,"/*@SWIG",7) == 0) && (loc[Len(cmt)-3] == '@')) {
	  scanner_locator(cmt);
	}
      }
      break;
    case SWIG_TOKEN_ENDLINE:
      break;
    case SWIG_TOKEN_BACKSLASH:
      break;
    default:
      Swig_error(cparse_file, cparse_line, "Illegal token '%s'.\n", Scanner_text(scan));
      return (ILLEGAL);
    }
  }
}
示例#2
0
int yylook(void) {

    int      state;
    int      c = 0;

    state = 0;
    yylen = 0;
    while(1) {

/*	printf("State = %d\n", state);   */
	switch(state) {

	case 0 :
	  if((c = nextchar()) == 0) return (0);

	  /* Process delimeters */

	  if (c == '\n') {
	    state = 0;
	    yylen = 0;
	    /*	    last_id = 0;*/
	  } else if (isspace(c) || (c=='\\')) {
	    state = 0;
	    yylen = 0;
	    /*	    last_id = 0; */
	  }

	  else if ((isalpha(c)) || (c == '_')) state = 7;
	  else if (c == '$') state = 75;

	  /* Look for single character symbols */

	  else if (c == '(') return (LPAREN);
	  else if (c == ')') return (RPAREN);
	  else if (c == ';') return (SEMI);
	  else if (c == ',') return (COMMA);
	  else if (c == '*') return (STAR);
	  else if (c == '}') {
	    num_brace--;
	    if (num_brace < 0) {
	      Swig_error(cparse_file, cparse_line, "Syntax error. Extraneous '}'\n");
	      state = 0;
	      num_brace = 0;
	    } else {
	      return (RBRACE);
	    }
	  }
	  else if (c == '{') {
	    last_brace = num_brace;
	    num_brace++;
	    return (LBRACE);
	  }
	  else if (c == '=') return (EQUAL);
	  else if (c == '+') return (PLUS);
          else if (c == '-') return (MINUS);
	  else if (c == '&') {
	    state = 300;
	  } 
	  else if (c == '|') {
	    state = 301;
	  }
	  else if (c == '^') return (XOR);
          else if (c == '<') state = 60;
	  else if (c == '>') state = 61;
	  else if (c == '~') {
	    return (NOT);
	  }
          else if (c == '!') return (LNOT);
	  else if (c == '\\') {
	    state = 99;
	  }
  	  else if (c == '[') return (LBRACKET);
	  else if (c == ']') return (RBRACKET);

	  /* Look for multi-character sequences */

	  else if (c == '/') state = 1;    /* Comment (maybe) */
	  else if (c == '\"') state = 2;   /* Possibly a string */
	  else if (c == '#') state = 3;    /* CPP */
	  else if (c == '%') state = 4;    /* Directive */
	  else if (c == '@') state = 4;    /* Objective C keyword */
	  else if (c == ':') state = 5;    /* maybe double colon */
	  else if (c == '0') state = 83;   /* An octal or hex value */
	  else if (c == '\'') state = 9;   /* A character constant */
	  else if (c == '.') state = 100;  /* Maybe a number, maybe just a period */
	  else if (c == '`') {
	    state = 200; /* Back-tick type */
	    yylen = 0;
	  }
	  else if (isdigit(c)) state = 8;  /* A numerical value */

	  else state = 99;
	  break;
	case 1:  /*  Comment block */
	  if ((c = nextchar()) == 0) return(0);
	  if (c == '/') {
	    comment_start = cparse_line;
	    Clear(comment);
	    state = 10;        /* C++ style comment */
	  } else if (c == '*') {
	    comment_start = cparse_line;
	    Clear(comment);
	    state = 12;   /* C style comment */
	  } else {
	    retract(1);
	    return(SLASH);
	  }
	  break;
	case 300: /* & or && */
	  if ((c = nextchar()) == 0) return(AND);
	  if (c == '&') return(LAND);
	  else {
	    retract(1);
	    return(AND);
	  }

	case 301: /* | or || */
	  if ((c = nextchar()) == 0) return(OR);
	  if (c == '|') return(LOR);
	  else {
	    retract(1);
	    return(OR);
	  }
	case 10:  /* C++ style comment */
	  if ((c = nextchar()) == 0) {
	    Swig_error(cparse_file,-1, "Unterminated comment detected.\n");
	    return 0;
	  }
	  if (c == '\n') {
	    Putc(c,comment);
	    /* Add the comment to documentation */
	    /*	    yycomment(Char(comment),comment_start, column_start);*/
	    yylen = 0;
	    state = 0;
	  } else {
	    state = 10;
	    Putc(c,comment);
	    yylen = 0;
	  }
	  break;

	case 12: /* C style comment block */
	  if ((c = nextchar()) == 0) {
	    Swig_error(cparse_file,-1,"Unterminated comment detected.\n");
	    return 0;
	  }
	  if (c == '*') {
	    state = 13;
	  } else {
	    Putc(c,comment);
	    yylen = 0;
	    state = 12;
	  }
	  break;
	case 13: /* Still in C style comment */
	  if ((c = nextchar()) == 0) {
	    Swig_error(cparse_file,-1,"Unterminated comment detected.\n");
	    return 0;
	  }
	  if (c == '*') {
	    Putc(c,comment);
	    state = 13;
	  } else if (c == '/') {

	    /* Look for locator markers */
	    {
	      char *loc = Char(comment);
	      if (Len(comment)) {
		if ((*loc == '@') && (*(loc+Len(comment)-1) == '@')) {
		  /* Locator */
		  scanner_locator(comment);
		}
	      }
	    }
	    /*	    yycomment(Char(comment),comment_start,column_start); */
	    yylen = 0;
	    state = 0;
	  } else {
	    Putc('*',comment);
	    Putc(c,comment);
	    yylen = 0;
	    state = 12;
	  }
	  break;

	case 2: /* Processing a string */
	  if ((c = nextchar()) == 0) {
	    Swig_error(cparse_file,-1, "Unterminated string detected.\n");
	    return 0;
	  }
	  if (c == '\"') {
	    yytext[yylen-1] = 0;
	    yylval.id = Swig_copy_string(yytext+1);
	    return(STRING);
	  } else if (c == '\\') {
	    yylen--;
	    get_escape();
	    break;
	  } else state = 2;
	  break;

	case 3: /* a CPP directive */
	  if (( c= nextchar()) == 0) return 0;
	  if (c == '\n') {
	    retract(1);
	    yytext[yylen] = 0;
	    yylval.id = yytext;
	    return(POUND);
	  }
	  break;

	case 4: /* A wrapper generator directive (maybe) */
	  if (( c= nextchar()) == 0) return 0;
	  if (c == '{') {
	    state = 40;   /* Include block */
	    Clear(header);
	    cparse_start_line = cparse_line;
	  } else if ((isalpha(c)) || (c == '_')) state = 7;
	  else if (c == '}') {
	    Swig_error(cparse_file,cparse_line, "Misplaced %%}.\n");
	    return 0;
	  } else {
	    retract(1);
	    return(MODULO);
	  }
	  break;

	case 40: /* Process an include block */
	  if ((c = nextchar()) == 0) {
	    Swig_error(cparse_file,-1, "Unterminated include block detected.\n");
	    return 0;
	  }
	  yylen = 0;
	  if (c == '%') state = 41;
	  else {
	    Putc(c,header);
	    yylen = 0;
	    state = 40;
	  }
	  break;
	case 41: /* Still processing include block */
	  if ((c = nextchar()) == 0) {
	    Swig_error(cparse_file,-1, "Unterminated include block detected.\n");
	    return 0;
	  }
	  if (c == '}') {
	    yylval.str = NewString(header);
	    return(HBLOCK);
	  } else {
	    Putc('%',header);
	    Putc(c,header);
	    yylen = 0;
	    state = 40;
	  }
	  break;

	case 5: /* Maybe a double colon */

	  if (( c= nextchar()) == 0) return 0;
	  if ( c == ':') {
	    state = 51;
	  } else {
	    retract(1);
	    return COLON;
	  }
	  break;
	case 51: /* Maybe a ::*, ::~, or :: */
	  if (( c = nextchar()) == 0) return 0;
	  if (c == '*') {
	    return DSTAR;
	  } else if (c == '~') {
	    return DCNOT;
	  } else if (isspace(c)) {
	    /* Keep scanning ahead.  Might be :: * or :: ~ */
	  } else {
	    retract(1);
	    if (!last_id) {
	      retract(2);
	      return NONID;
	    } else {
	      return DCOLON;
	    }
	  }
	  break;

	case 60: /* shift operators */
	  if ((c = nextchar()) == 0) return (0);
	  if (c == '<') return LSHIFT;
	  else {
	    retract(1);
	    return LESSTHAN;
	  }
	  break;
	case 61:
	  if ((c = nextchar()) == 0) return (0);
	  if (c == '>') return RSHIFT;
	  else {
	    retract(1);
            return GREATERTHAN;
	  }
	  break;
	case 7: /* Identifier */
	  if ((c = nextchar()) == 0) return(0);
	  if (isalnum(c) || (c == '_') || (c == '.') || (c == '$')) {
	    state = 7;
	  } else {
	    retract(1);
	    return(ID);
	  }
	  break;
	case 75: /* Special identifier $*/
	  if ((c = nextchar()) == 0) return(0);
	  if (isalnum(c) || (c == '_') || (c == '*') || (c == '&')) {
	    state = 7;
	  } else {
	    retract(1);
	    return(ID);
	  }
	  break;

	case 8: /* A numerical digit */
	  if ((c = nextchar()) == 0) return(0);
	  if (c == '.') {state = 81;}
	  else if ((c == 'e') || (c == 'E')) {state = 86;}
	  else if ((c == 'f') || (c == 'F')) {
	     return(NUM_FLOAT);
	  }
	  else if (isdigit(c)) { state = 8;}
	  else if ((c == 'l') || (c == 'L')) {
	    state = 87;
	  } else if ((c == 'u') || (c == 'U')) {
	    state = 88;
	  } else {
	      retract(1);
	      return(NUM_INT);
	    }
	  break;
	case 81: /* A floating pointer number of some sort */
	  if ((c = nextchar()) == 0) return(0);
	  if (isdigit(c)) state = 81;
	  else if ((c == 'e') || (c == 'E')) state = 82;
          else if ((c == 'f') || (c == 'F') || (c == 'l') || (c == 'L')) {
	    return(NUM_FLOAT);
	  } else {
	    retract(1);
	    return(NUM_FLOAT);
	  }
	  break;
	case 82:
	  if ((c = nextchar()) == 0) return(0);
	  if ((isdigit(c)) || (c == '-') || (c == '+')) state = 86;
	  else {
	    retract(2);
	    yytext[yylen-1] = 0;
	    return(NUM_INT);
	  }
	  break;
	case 83:
	  /* Might be a hexidecimal or octal number */
	  if ((c = nextchar()) == 0) return(0);
	  if (isdigit(c)) state = 84;
	  else if ((c == 'x') || (c == 'X')) state = 85;
	  else if (c == '.') state = 81;
	  else if ((c == 'l') || (c == 'L')) {
	    state = 87;
	  } else if ((c == 'u') || (c == 'U')) {
	    state = 88;
	  } else {
	    retract(1);
	    return(NUM_INT);
	  }
	  break;
	case 84:
	  /* This is an octal number */
	  if ((c = nextchar()) == 0) return (0);
	  if (isdigit(c)) state = 84;
	  else if ((c == 'l') || (c == 'L')) {
	    state = 87;
	  } else if ((c == 'u') || (c == 'U')) {
	    state = 88;
	  } else {
	    retract(1);
	    return(NUM_INT);
	  }
	  break;
	case 85:
	  /* This is an hex number */
	  if ((c = nextchar()) == 0) return (0);
	  if ((isdigit(c)) || (c=='a') || (c=='b') || (c=='c') ||
	      (c=='d') || (c=='e') || (c=='f') || (c=='A') ||
	      (c=='B') || (c=='C') || (c=='D') || (c=='E') ||
	      (c=='F'))
	    state = 85;
	  else if ((c == 'l') || (c == 'L')) {
	    state = 87;
	  } else if ((c == 'u') || (c == 'U')) {
	    state = 88;
	  } else {
	    retract(1);
	    return(NUM_INT);
	  }
	  break;

	case 86:
	  /* Rest of floating point number */

	  if ((c = nextchar()) == 0) return (0);
	  if (isdigit(c)) state = 86;
          else if ((c == 'f') || (c == 'F') || (c == 'l') || (c == 'L')) {
	    return(NUM_FLOAT);
	  } else {
	    retract(1);
	    return(NUM_FLOAT);
	  }
	  /* Parse a character constant. ie. 'a' */
	  break;

	case 87 :
	  /* A long integer of some sort */
	  if ((c = nextchar()) == 0) return (NUM_LONG);
	  if ((c == 'u') || (c == 'U')) {
	    return(NUM_ULONG);
	  } else if ((c == 'l') || (c == 'L')) {
	    state = 870;
	  } else {
	    retract(1);
	    return(NUM_LONG);
	  }
	  break;

	case 870:
	  if ((c = nextchar()) == 0) return (NUM_LONGLONG);
	  if ((c == 'u') || (c == 'U')) {
	    return (NUM_ULONGLONG);
	  } else {
	    retract(1);
	    return(NUM_LONGLONG);
	  }

	case 88:
	  /* An unsigned integer of some sort */
	  if ((c = nextchar()) == 0) return (NUM_UNSIGNED);
	  if ((c == 'l') || (c == 'L')) {
	    state = 880;
	  } else {
	    retract(1);
	    return(NUM_UNSIGNED);
	  }
	  break;

	case 880:
	  if ((c = nextchar()) == 0) return (NUM_ULONG);
	  if ((c == 'l') || (c == 'L')) return (NUM_ULONGLONG);
	  else {
	    retract(1);
	    return(NUM_ULONG);
	  }
	  
	case 9:
	  if ((c = nextchar()) == 0) return (0);
	  if (c == '\\') {
	    yylen--;
	    get_escape();
	  } else if (c == '\'') {
	    yytext[yylen-1] = 0;
	    yylval.str = NewString(yytext+1);
	    if (yylen == 2) {
	      Swig_error(cparse_file, cparse_line, "Empty character constant\n");
	    }
	    return(CHARCONST);
	  }
	  break;

	case 100:
	  if ((c = nextchar()) == 0) return (0);
	  if (isdigit(c)) state = 81;
	  else {
	    retract(1);
	    return(PERIOD);
	  }
	  break;
	case 200:
	  if ((c = nextchar()) == 0) return (0);
	  if (c == '`') {
	    yytext[yylen-1] = 0;
	    yylval.type = NewString(yytext);
	    return(TYPE_RAW);
	  }
	  break;

	default:
	  Swig_error(cparse_file, cparse_line, "Illegal character '%c'=%d.\n",c,c);
	  state = 0;
	  return(ILLEGAL);
	}
    }
}