-/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2018 Free Software Foundation, Inc.
Contributed by Andy Vaught
F2003 I/O support contributed by Jerry DeLisle
/* format.c-- parse a FORMAT string into a binary format suitable for
- * interpretation during I/O statements */
+ interpretation during I/O statements. */
#include "io.h"
#include "format.h"
#include <ctype.h>
#include <string.h>
-#include <stdlib.h>
static const fnode colon_node = { FMT_COLON, 0, NULL, NULL, {{ 0, 0, 0 }}, 0,
/* next_char()-- Return the next character in the format string.
- * Returns -1 when the string is done. If the literal flag is set,
- * spaces are significant, otherwise they are not. */
+ Returns -1 when the string is done. If the literal flag is set,
+ spaces are significant, otherwise they are not. */
static int
next_char (format_data *fmt, int literal)
/* get_fnode()-- Allocate a new format node, inserting it into the
- * current singly linked list. These are initially allocated from the
- * static buffer. */
+ current singly linked list. These are initially allocated from the
+ static buffer. */
static fnode *
get_fnode (format_data *fmt, fnode **head, fnode **tail, format_token t)
return;
/* Free vlist descriptors in the fnode_array if one was allocated. */
- for (fnp = fmt->array.array; fnp->format != FMT_NONE; fnp++)
+ for (fnp = fmt->array.array; fnp < &fmt->array.array[FARRAY_SIZE] &&
+ fnp->format != FMT_NONE; fnp++)
if (fnp->format == FMT_DT)
{
if (GFC_DESCRIPTOR_DATA(fnp->u.udf.vlist))
/* format_lex()-- Simple lexical analyzer for getting the next token
- * in a FORMAT string. We support a one-level token pushback in the
- * fmt->saved_token variable. */
+ in a FORMAT string. We support a one-level token pushback in the
+ fmt->saved_token variable. */
static format_token
format_lex (format_data *fmt)
/* parse_format_list()-- Parse a format list. Assumes that a left
- * paren has already been seen. Returns a list representing the
- * parenthesis node which contains the rest of the list. */
+ paren has already been seen. Returns a list representing the
+ parenthesis node which contains the rest of the list. */
static fnode *
parse_format_list (st_parameter_dt *dtp, bool *seen_dd)
/* format_error()-- Generate an error message for a format statement.
- * If the node that gives the location of the error is NULL, the error
- * is assumed to happen at parse time, and the current location of the
- * parser is shown.
- *
- * We generate a message showing where the problem is. We take extra
- * care to print only the relevant part of the format if it is longer
- * than a standard 80 column display. */
+ If the node that gives the location of the error is NULL, the error
+ is assumed to happen at parse time, and the current location of the
+ parser is shown.
+
+ We generate a message showing where the problem is. We take extra
+ care to print only the relevant part of the format if it is longer
+ than a standard 80 column display. */
void
format_error (st_parameter_dt *dtp, const fnode *f, const char *message)
/* revert()-- Do reversion of the format. Control reverts to the left
- * parenthesis that matches the rightmost right parenthesis. From our
- * tree structure, we are looking for the rightmost parenthesis node
- * at the second level, the first level always being a single
- * parenthesis node. If this node doesn't exit, we use the top
- * level. */
+ parenthesis that matches the rightmost right parenthesis. From our
+ tree structure, we are looking for the rightmost parenthesis node
+ at the second level, the first level always being a single
+ parenthesis node. If this node doesn't exit, we use the top
+ level. */
static void
revert (st_parameter_dt *dtp)
/* next_format0()-- Get the next format node without worrying about
- * reversion. Returns NULL when we hit the end of the list.
- * Parenthesis nodes are incremented after the list has been
- * exhausted, other nodes are incremented before they are returned. */
+ reversion. Returns NULL when we hit the end of the list.
+ Parenthesis nodes are incremented after the list has been
+ exhausted, other nodes are incremented before they are returned. */
static const fnode *
-next_format0 (fnode * f)
+next_format0 (fnode *f)
{
const fnode *r;
/* next_format()-- Return the next format node. If the format list
- * ends up being exhausted, we do reversion. Reversion is only
- * allowed if we've seen a data descriptor since the
- * initialization or the last reversion. We return NULL if there
- * are no more data descriptors to return (which is an error
- * condition). */
+ ends up being exhausted, we do reversion. Reversion is only
+ allowed if we've seen a data descriptor since the
+ initialization or the last reversion. We return NULL if there
+ are no more data descriptors to return (which is an error
+ condition). */
const fnode *
next_format (st_parameter_dt *dtp)
}
/* Push the first reverted token and return a colon node in case
- * there are no more data items. */
+ there are no more data items. */
fmt->saved_format = f;
return &colon_node;
/* unget_format()-- Push the given format back so that it will be
- * returned on the next call to next_format() without affecting
- * counts. This is necessary when we've encountered a data
- * descriptor, but don't know what the data item is yet. The format
- * node is pushed back, and we return control to the main program,
- * which calls the library back with the data item (or not). */
+ returned on the next call to next_format() without affecting
+ counts. This is necessary when we've encountered a data
+ descriptor, but don't know what the data item is yet. The format
+ node is pushed back, and we return control to the main program,
+ which calls the library back with the data item (or not). */
void
unget_format (st_parameter_dt *dtp, const fnode *f)
projects / gcc.git / blobdiff