Move array reader from arrays.c to read.c

* libguile/arrays.c (read_decimal_integer): Move to read.c.
  (scm_i_read_array): Remove.  Incorporate the code into the
  'scm_read_array' static function in read.c.

* libguile/arrays.h (scm_i_read_array): Remove prototype.

* libguile/read.c (read_decimal_integer): Move here from read.c.
  (scm_read_array): Incorporate the code from 'scm_i_read_array'.  Call
  'scm_read_vector' and 'scm_read_sexp' instead of 'scm_read'.

1 files changed, 2 insertions, 173 deletions

diff --git a/libguile/arrays.c b/libguile/arrays.c
index a294f33ec..1eb10b981 100644
--- a/libguile/arrays.c
+++ b/libguile/arrays.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004, 2005, 2006, 2009, 2010, 2011 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004,2005,
+ *   2006, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -814,178 +815,6 @@ scm_i_print_array (SCM array, SCM port, scm_print_state *pstate)
     return scm_i_print_array_dimension (&h, 0, 0, port, pstate);
 }
 
-/* Read an array.  This function can also read vectors and uniform
-   vectors.  Also, the conflict between '#f' and '#f32' and '#f64' is
-   handled here.
-
-   C is the first character read after the '#'.
-*/
-
-static int
-read_decimal_integer (SCM port, int c, ssize_t *resp)
-{
-  ssize_t sign = 1;
-  ssize_t res = 0;
-  int got_it = 0;
-
-  if (c == '-')
-    {
-      sign = -1;
-      c = scm_getc (port);
-    }
-
-  while ('0' <= c && c <= '9')
-    {
-      res = 10*res + c-'0';
-      got_it = 1;
-      c = scm_getc (port);
-    }
-
-  if (got_it)
-    *resp = sign * res;
-  return c;
-}
-
-SCM
-scm_i_read_array (SCM port, int c)
-{
-  ssize_t rank;
-  scm_t_wchar tag_buf[8];
-  int tag_len;
-
-  SCM tag, shape = SCM_BOOL_F, elements;
-
-  /* XXX - shortcut for ordinary vectors.  Shouldn't be necessary but
-     the array code can not deal with zero-length dimensions yet, and
-     we want to allow zero-length vectors, of course.
-  */
-  if (c == '(')
-    {
-      scm_ungetc (c, port);
-      return scm_vector (scm_read (port));
-    }
-
-  /* Disambiguate between '#f' and uniform floating point vectors.
-   */
-  if (c == 'f')
-    {
-      c = scm_getc (port);
-      if (c != '3' && c != '6')
-	{
-	  if (c != EOF)
-	    scm_ungetc (c, port);
-	  return SCM_BOOL_F;
-	}
-      rank = 1;
-      tag_buf[0] = 'f';
-      tag_len = 1;
-      goto continue_reading_tag;
-    }
-
-  /* Read rank. 
-   */
-  rank = 1;
-  c = read_decimal_integer (port, c, &rank);
-  if (rank < 0)
-    scm_i_input_error (NULL, port, "array rank must be non-negative",
-		       SCM_EOL);
-
-  /* Read tag. 
-   */
-  tag_len = 0;
- continue_reading_tag:
-  while (c != EOF && c != '(' && c != '@' && c != ':'
-         && tag_len < sizeof tag_buf / sizeof tag_buf[0])
-    {
-      tag_buf[tag_len++] = c;
-      c = scm_getc (port);
-    }
-  if (tag_len == 0)
-    tag = SCM_BOOL_T;
-  else
-    {
-      tag = scm_string_to_symbol (scm_from_utf32_stringn (tag_buf, tag_len));
-      if (tag_len == sizeof tag_buf / sizeof tag_buf[0])
-        scm_i_input_error (NULL, port, "invalid array tag, starting with: ~a",
-                           scm_list_1 (tag));
-    }
-    
-  /* Read shape. 
-   */
-  if (c == '@' || c == ':')
-    {
-      shape = SCM_EOL;
-      
-      do
-	{
-	  ssize_t lbnd = 0, len = 0;
-	  SCM s;
-
-	  if (c == '@')
-	    {
-	      c = scm_getc (port);
-	      c = read_decimal_integer (port, c, &lbnd);
-	    }
-	  
-	  s = scm_from_ssize_t (lbnd);
-
-	  if (c == ':')
-	    {
-	      c = scm_getc (port);
-	      c = read_decimal_integer (port, c, &len);
-	      if (len < 0)
-		scm_i_input_error (NULL, port,
-				   "array length must be non-negative",
-				   SCM_EOL);
-
-	      s = scm_list_2 (s, scm_from_ssize_t (lbnd+len-1));
-	    }
-
-	  shape = scm_cons (s, shape);
-	} while (c == '@' || c == ':');
-
-      shape = scm_reverse_x (shape, SCM_EOL);
-    }
-
-  /* Read nested lists of elements.
-   */
-  if (c != '(')
-    scm_i_input_error (NULL, port,
-		       "missing '(' in vector or array literal",
-		       SCM_EOL);
-  scm_ungetc (c, port);
-  elements = scm_read (port);
-
-  if (scm_is_false (shape))
-    shape = scm_from_ssize_t (rank);
-  else if (scm_ilength (shape) != rank)
-    scm_i_input_error 
-      (NULL, port,
-       "the number of shape specifications must match the array rank",
-       SCM_EOL);
-
-  /* Handle special print syntax of rank zero arrays; see
-     scm_i_print_array for a rationale.
-  */
-  if (rank == 0)
-    {
-      if (!scm_is_pair (elements))
-	scm_i_input_error (NULL, port,
-			   "too few elements in array literal, need 1",
-			   SCM_EOL);
-      if (!scm_is_null (SCM_CDR (elements)))
-	scm_i_input_error (NULL, port,
-			   "too many elements in array literal, want 1",
-			   SCM_EOL);
-      elements = SCM_CAR (elements);
-    }
-
-  /* Construct array. 
-   */
-  return scm_list_to_typed_array (tag, shape, elements);
-}
-
-
 static SCM
 array_handle_ref (scm_t_array_handle *h, size_t pos)
 {