WebSVN – tendra.SVN – Diff – /trunk/src/utilities/sid/lexer.c

+/*
+ * Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of The TenDRA Project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific, prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id$
+ */
 /*
     		 Crown Copyright (c) 1997
     This TenDRA(r) Computer Program is subject to Copyright
     owned by the United Kingdom Secretary of State for Defence
     acting through the Defence Evaluation and Research Agency
     (DERA).  It is made available to Recipients with a
     royalty-free licence for its use, reproduction, transfer
     to other parties and amendment for any purpose not excluding
     product development provided that any such use et cetera
     shall be deemed to be acceptance of the following conditions:-
         (1) Its Recipients shall ensure that this Notice is
         reproduced upon any copies or amended versions of it;
         (2) Any amended version of it shall be clearly marked to
         show both the nature of and the organisation responsible
         for the relevant amendment or amendments;
         (3) Its onward transfer from a recipient to another
         party shall be deemed to be that party's acceptance of
         these conditions;
         (4) DERA gives no warranty or assurance as to its
         quality or suitability for any purpose and DERA accepts
         no liability whatsoever in relation to any use to which
         it may be put.
 */
 #include "gen-errors.h"
 #include "syntax.h"
 /*--------------------------------------------------------------------------*/
-#define LEXER_READ_ONE_CHAR(istream, redo, eof, id) \
+#define LEXER_READ_ONE_CHAR(istream, redo, eof, id)\
-    switch ((id) = ISTREAM_READ_CHAR (istream)) { \
+    switch ((id) = ISTREAM_READ_CHAR(istream)) { \
       case '\0': \
-        ISTREAM_HANDLE_NULL ((istream), redo, eof); \
+        ISTREAM_HANDLE_NULL((istream), redo, eof); \
         break; \
       case '\n': \
-        istream_inc_line (istream); \
+        istream_inc_line(istream); \
         break; \
       default: \
         break; \
+    }
 /*--------------------------------------------------------------------------*/
 static BoolT
-lexer_skip_bracketed_comment PROTO_N ((istream))
+lexer_skip_bracketed_comment(IStreamP istream)
-			     PROTO_T (IStreamP istream)
+{
     char c1;
     char c2;
   redo1:
-    LEXER_READ_ONE_CHAR (istream, redo1, eof, c1);
+    LEXER_READ_ONE_CHAR(istream, redo1, eof, c1);
   redo2:
-    LEXER_READ_ONE_CHAR (istream, redo2, eof, c2);
+    LEXER_READ_ONE_CHAR(istream, redo2, eof, c2);
     for (;;) {
 	if ((c1 == '/') && (c2 == '*')) {
-	    if (!lexer_skip_bracketed_comment (istream)) {
+	    if (!lexer_skip_bracketed_comment(istream)) {
 		goto eof;
+	    }
 	  redo3:
-	    LEXER_READ_ONE_CHAR (istream, redo3, eof, c2);
+	    LEXER_READ_ONE_CHAR(istream, redo3, eof, c2);
 	} else if ((c1 == '*') && (c2 == '/')) {
-	    return (TRUE);
+	    return(TRUE);
+	}
 	c1 = c2;
       redo4:
-	LEXER_READ_ONE_CHAR (istream, redo4, eof, c2);
+	LEXER_READ_ONE_CHAR(istream, redo4, eof, c2);
+    }
   eof:
-    return (FALSE);
+    return(FALSE);
+}
 static char
-lexer_skip_white_space PROTO_N ((istream))
+lexer_skip_white_space(IStreamP istream)
-		       PROTO_T (IStreamP istream)
 {
     for (;;) {
 	char c;
       redo1:
-	switch (c = ISTREAM_READ_CHAR (istream)) {
+	switch (c = ISTREAM_READ_CHAR(istream)) {
 	  case '\0':
-	    ISTREAM_HANDLE_NULL (istream, redo1, eof);
+	    ISTREAM_HANDLE_NULL(istream, redo1, eof);
 	    break;
 	  case '\n':
-	    istream_inc_line (istream);
+	    istream_inc_line(istream);
 	    break;
 	  case '/':
 	  redo2:
-	    switch (c = ISTREAM_READ_CHAR (istream)) {
+	    switch (c = ISTREAM_READ_CHAR(istream)) {
 	      case '\0':
-		ISTREAM_HANDLE_NULL (istream, redo2, eof_in_comment);
+		ISTREAM_HANDLE_NULL(istream, redo2, eof_in_comment);
 		goto illegal_in_comment;
 	      case '\n':
-		istream_inc_line (istream);
+		istream_inc_line(istream);
 		goto illegal_in_comment;
 	      case '*':
-		if (!lexer_skip_bracketed_comment (istream)) {
+		if (!lexer_skip_bracketed_comment(istream)) {
 		  eof_in_comment:
-		    E_eof_in_comment (istream);
+		    E_eof_in_comment(istream);
 		    return ('\0'); /*FOR EOF*/
+		}
 		break;
 	      case '/':
 		do {
 		  redo3:
-		    LEXER_READ_ONE_CHAR (istream, redo3, eof, c);
+		    LEXER_READ_ONE_CHAR(istream, redo3, eof, c);
 		} while (c != '\n');
 		break;
 	      default:
 	      illegal_in_comment:
-		E_illegal_comment_character (istream, c);
+		E_illegal_comment_character(istream, c);
 		break;
 	    }
 	    break;
 	  default:
-	    if (!syntax_is_white_space (c)) {
+	    if (!syntax_is_white_space(c)) {
-		return (c);
+		return(c);
 	    }
 	    break;
 	}
     }
   eof:
     return ('\0'); /*FOR EOF*/
+}
 static void
-lexer_read_builtin PROTO_N ((istream, token))
+lexer_read_builtin(IStreamP istream, LexP token)
-		   PROTO_T (IStreamP istream X
-			    LexP     token)
+{
     DStringT dstring;
     CStringP cstring;
-    dstring_init (&dstring);
+    dstring_init(&dstring);
     for (;;) {
 	char c;
       redo:
-	switch (c = ISTREAM_READ_CHAR (istream)) {
+	switch (c = ISTREAM_READ_CHAR(istream)) {
 	  case '\0':
-	    ISTREAM_HANDLE_NULL (istream, redo, eof);
+	    ISTREAM_HANDLE_NULL(istream, redo, eof);
-	    E_null_character_in_builtin (istream);
+	    E_null_character_in_builtin(istream);
 	    break;
 	  case '\n':
-	    istream_inc_line (istream);
+	    istream_inc_line(istream);
-	    E_newline_in_builtin (istream);
+	    E_newline_in_builtin(istream);
 	    goto done;
 	  case '%':
 	    goto done;
 	  default:
-	    dstring_append_char (&dstring, c);
+	    dstring_append_char(&dstring, c);
+	}
+    }
   eof:
-    E_eof_in_builtin (istream);
+    E_eof_in_builtin(istream);
   done:
-    cstring = dstring_destroy_to_cstring (&dstring);
+    cstring = dstring_destroy_to_cstring(&dstring);
-    if (cstring_ci_equal (cstring, "types")) {
+    if (cstring_ci_equal(cstring, "types")) {
 	token->t = LEXER_TOK_BLT_TYPES;
-    } else if (cstring_ci_equal (cstring, "terminals")) {
+    } else if (cstring_ci_equal(cstring, "terminals")) {
 	token->t = LEXER_TOK_BLT_TERMINALS;
-    } else if (cstring_ci_equal (cstring, "productions")) {
+    } else if (cstring_ci_equal(cstring, "productions")) {
 	token->t = LEXER_TOK_BLT_PRODUCTIONS;
-    } else if (cstring_ci_equal (cstring, "entry")) {
+    } else if (cstring_ci_equal(cstring, "entry")) {
 	token->t = LEXER_TOK_BLT_ENTRY;
     } else {
-	E_unknown_builtin (istream, cstring);
+	E_unknown_builtin(istream, cstring);
 	UNREACHED;
     }
-    DEALLOCATE (cstring);
+    DEALLOCATE(cstring);
 }
 static void
-lexer_read_identifier PROTO_N ((istream, c, token))
+lexer_read_identifier(IStreamP istream, char c, LexP token)
-		      PROTO_T (IStreamP istream X
-			       char     c X
-			       LexP     token)
+{
     DStringT dstring;
-    dstring_init (&dstring);
+    dstring_init(&dstring);
-    dstring_append_char (&dstring, c);
+    dstring_append_char(&dstring, c);
     for (;;) {
       redo1:
-	switch (c = ISTREAM_PEEK_CHAR (istream)) {
+	switch (c = ISTREAM_PEEK_CHAR(istream)) {
 	  case '\0':
-	    ISTREAM_HANDLE_NULL (istream, redo1, done);
+	    ISTREAM_HANDLE_NULL(istream, redo1, done);
 	    goto done;
 	  default:
-	    if ((syntax_is_letter (c)) || (syntax_is_digit (c)) ||
+	    if ((syntax_is_letter(c)) || (syntax_is_digit(c)) ||
 		(c == '_') || (c == '-')) {
 	      redo2:
-		LEXER_READ_ONE_CHAR (istream, redo2, done, c);
+		LEXER_READ_ONE_CHAR(istream, redo2, done, c);
-		dstring_append_char (&dstring, c);
+		dstring_append_char(&dstring, c);
 	    } else {
 		goto done;
+	    }
 	    break;
+	}
+    }
   done:
     token->t = LEXER_TOK_IDENTIFIER;
-    dstring_to_nstring (&dstring, &(token->u.string));
+    dstring_to_nstring(&dstring, &(token->u.string));
-    dstring_destroy (&dstring);
+    dstring_destroy(&dstring);
+}
 /*--------------------------------------------------------------------------*/
 void
-lexer_init PROTO_N ((stream, istream))
+lexer_init(LexerStreamP stream, IStreamP istream)
-	   PROTO_T (LexerStreamP stream X
-		    IStreamP     istream)
+{
-    istream_assign (&(stream->istream), istream);
+    istream_assign(&(stream->istream), istream);
-    lexer_next_token (stream);
+    lexer_next_token(stream);
+}
 #ifdef FS_FAST
 #undef lexer_close
 #endif /* defined (FS_FAST) */
 void
-lexer_close PROTO_N ((stream))
-	    PROTO_T (LexerStreamP stream)
+lexer_close(LexerStreamP stream)
+{
-    istream_close (&(stream->istream));
+    istream_close(&(stream->istream));
+}
 #ifdef FS_FAST
-#define lexer_close(s) (istream_close (&((s)->istream)))
+#define lexer_close(s)	(istream_close(&((s)->istream)))
 #endif /* defined (FS_FAST) */
 #ifdef FS_FAST
 #undef lexer_stream_name
 #endif /* defined (FS_FAST) */
 CStringP
-lexer_stream_name PROTO_N ((stream))
+lexer_stream_name(LexerStreamP stream)
-		  PROTO_T (LexerStreamP stream)
+{
-    return (istream_name (&(stream->istream)));
+    return(istream_name(&(stream->istream)));
+}
 #ifdef FS_FAST
-#define lexer_stream_name(s) (istream_name (&((s)->istream)))
+#define lexer_stream_name(s)	(istream_name(&((s)->istream)))
 #endif /* defined (FS_FAST) */
 #ifdef FS_FAST
 #undef lexer_stream_line
 #endif /* defined (FS_FAST) */
 unsigned
-lexer_stream_line PROTO_N ((stream))
+lexer_stream_line(LexerStreamP stream)
-		  PROTO_T (LexerStreamP stream)
+{
-    return (istream_line (&(stream->istream)));
+    return(istream_line(&(stream->istream)));
+}
 #ifdef FS_FAST
-#define lexer_stream_line(s) (istream_line (&((s)->istream)))
+#define lexer_stream_line(s)	(istream_line(&((s)->istream)))
 #endif /* defined (FS_FAST) */
 #ifdef FS_FAST
 #undef lexer_get_terminal
 #endif /* defined (FS_FAST) */
 LexerTokenT
-lexer_get_terminal PROTO_N ((stream))
+lexer_get_terminal(LexerStreamP stream)
-		   PROTO_T (LexerStreamP stream)
+{
-    return (stream->token.t);
+    return(stream->token.t);
+}
 #ifdef FS_FAST
-#define lexer_get_terminal(s) ((s)->token.t)
+#define lexer_get_terminal(s)	((s)->token.t)
 #endif /* defined (FS_FAST) */
 void
-lexer_next_token PROTO_N ((stream))
+lexer_next_token(LexerStreamP stream)
-		 PROTO_T (LexerStreamP stream)
+{
     IStreamP istream = &(stream->istream);
     LexT     token;
     char     c;
   retry:
-    switch (c = lexer_skip_white_space (istream)) {
+    switch (c = lexer_skip_white_space(istream)) {
       case '\0': /*FOR EOF*/
 	token.t = LEXER_TOK_EOF;
 	break;
       case '#':
-	if ((istream_peek_char (istream, &c)) && (c == '#')) {
+	if ((istream_peek_char(istream, &c)) && (c == '#')) {
-	    (void) istream_read_char (istream, &c);
+	   (void)istream_read_char(istream, &c);
 	    token.t = LEXER_TOK_HANDLER_SEP;
 	    break;
+	}
-	E_expected_hash (istream);
+	E_expected_hash(istream);
 	goto retry;
       case '$':
 	token.t = LEXER_TOK_EMPTY;
 	break;
       case '%':
-	lexer_read_builtin (istream, &token);
+	lexer_read_builtin(istream, &token);
 	break;
       case '|':
-	if ((istream_peek_char (istream, &c)) && (c == '|')) {
+	if ((istream_peek_char(istream, &c)) && (c == '|')) {
-	    (void) istream_read_char (istream, &c);
+	   (void)istream_read_char(istream, &c);
 	    token.t = LEXER_TOK_ALT_SEP;
 	    break;
+	}
-	E_expected_pipe (istream);
+	E_expected_pipe(istream);
 	goto retry;
       case ',':
 	token.t = LEXER_TOK_SEPARATOR;
 	break;
       case ':':
-	if ((istream_peek_char (istream, &c)) && (c == ':')) {
+	if ((istream_peek_char(istream, &c)) && (c == ':')) {
-	    (void) istream_read_char (istream, &c);
+	   (void)istream_read_char(istream, &c);
 	    token.t = LEXER_TOK_SCOPEMARK;
 	    break;
+	}
 	token.t = LEXER_TOK_TYPEMARK;
 	break;
 	break;
       case '&':
 	token.t = LEXER_TOK_REFERENCE;
 	break;
       case '-':
-	if ((istream_peek_char (istream, &c)) && (c == '>')) {
+	if ((istream_peek_char(istream, &c)) && (c == '>')) {
-	    (void) istream_read_char (istream, &c);
+	   (void)istream_read_char(istream, &c);
 	    token.t = LEXER_TOK_ARROW;
 	    break;
+	}
-	lexer_read_identifier (istream, '-', &token);
+	lexer_read_identifier(istream, '-', &token);
 	break;
       default:
-	if ((syntax_is_letter (c)) || (c == '_')) {
+	if ((syntax_is_letter(c)) || (c == '_')) {
-	    lexer_read_identifier (istream, c, &token);
+	    lexer_read_identifier(istream, c, &token);
 	} else {
-	    E_illegal_character (istream, c);
+	    E_illegal_character(istream, c);
 	    goto retry;
+	}
 	break;
+    }
     stream->token = token;
 #ifdef FS_FAST
 #undef lexer_string_value
 #endif /* defined (FS_FAST) */
 NStringP
-lexer_string_value PROTO_N ((stream))
+lexer_string_value(LexerStreamP stream)
-		   PROTO_T (LexerStreamP stream)
+{
-    ASSERT (stream->token.t == LEXER_TOK_IDENTIFIER);
+    ASSERT(stream->token.t == LEXER_TOK_IDENTIFIER);
-    return (&(stream->token.u.string));
+    return(&(stream->token.u.string));
+}
 #ifdef FS_FAST
-#define lexer_string_value(s) (&((s)->token.u.string))
+#define lexer_string_value(s)	(&((s)->token.u.string))
 #endif /* defined (FS_FAST) */
 void
-lexer_save_terminal PROTO_N ((stream, error_terminal))
+lexer_save_terminal(LexerStreamP stream, LexerTokenT error_terminal)
-		    PROTO_T (LexerStreamP stream X
-			     LexerTokenT  error_terminal)
+{
-    ASSERT (stream->token.t != error_terminal);
+    ASSERT(stream->token.t != error_terminal);
     stream->saved_terminal = stream->token.t;
     stream->token.t        = error_terminal;
+}
 void
-lexer_restore_terminal PROTO_N ((stream))
+lexer_restore_terminal(LexerStreamP stream)
-		       PROTO_T (LexerStreamP stream)
+{
     stream->token.t = stream->saved_terminal;
+}
 /*

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(root)/trunk/src/utilities/sid/lexer.c – Rev 2 → 7