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PR exp/11926

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* parser-defs.h (parse_float, parse_c_float): Declare.
	* parse.c (parse_float, parse_c_float): New function.
	* c-exp.y (parse_number): Call parse_c_float.
	* objc-exp.y (parse_number): Ditto.
	* p-exp.y (parse_number): Ditto.  Use ANSI/ISO-style definition.
	* jv-exp.y (parse_number): Call parse_float, fix suffix handling.

	testsuite/
	* gdb.base/printcmds.exp (test_float_accepted): New function.
	Move existing float tests there.  Add tests for floats with suffixes.
	(test_float_rejected): New function.
	* gdb.java/jv-print.exp (test_float_accepted): New function.
	(test_float_rejected): New function.
	* gdb.objc/print.exp: New file.
	* gdb.pascal/print.exp: New file.
	* lib/objc.exp: New file.
This commit is contained in:
Doug Evans 2010-08-19 13:33:15 +00:00
parent 2837d59e6b
commit d30f5e1f70
13 changed files with 343 additions and 107 deletions
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69
gdb/parse.c
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@ -1038,8 +1038,6 @@ prefixify_subexp (struct expression *inexpr,
return result;
}
/* This page contains the two entry points to this file. */
/* Read an expression from the string *STRINGPTR points to,
parse it, and return a pointer to a struct expression that we malloc.
Use block BLOCK as the lexical context for variable names;
@ -1252,6 +1250,73 @@ void
null_post_parser (struct expression **exp, int void_context_p)
{
}
/* Parse floating point value P of length LEN.
Return 0 (false) if invalid, 1 (true) if valid.
The successfully parsed number is stored in D.
*SUFFIX points to the suffix of the number in P.
NOTE: This accepts the floating point syntax that sscanf accepts. */
int
parse_float (const char *p, int len, DOUBLEST *d, const char **suffix)
{
char *copy;
char *s;
int n, num;
copy = xmalloc (len + 1);
memcpy (copy, p, len);
copy[len] = 0;
num = sscanf (copy, "%" DOUBLEST_SCAN_FORMAT "%n", d, &n);
xfree (copy);
/* The sscanf man page suggests not making any assumptions on the effect
of %n on the result, so we don't.
That is why we simply test num == 0. */
if (num == 0)
return 0;
*suffix = p + n;
return 1;
}
/* Parse floating point value P of length LEN, using the C syntax for floats.
Return 0 (false) if invalid, 1 (true) if valid.
The successfully parsed number is stored in *D.
Its type is taken from builtin_type (gdbarch) and is stored in *T. */
int
parse_c_float (struct gdbarch *gdbarch, const char *p, int len,
DOUBLEST *d, struct type **t)
{
const char *suffix;
int suffix_len;
const struct builtin_type *builtin_types = builtin_type (gdbarch);
if (! parse_float (p, len, d, &suffix))
return 0;
suffix_len = p + len - suffix;
if (suffix_len == 0)
*t = builtin_types->builtin_double;
else if (suffix_len == 1)
{
/* Handle suffixes: 'f' for float, 'l' for long double. */
if (tolower (*suffix) == 'f')
*t = builtin_types->builtin_float;
else if (tolower (*suffix) == 'l')
*t = builtin_types->builtin_long_double;
else
return 0;
}
else
return 0;
return 1;
}
/* Stuff for maintaining a stack of types. Currently just used by C, but
probably useful for any language which declares its types "backwards". */