ASSIGN64(ulmax, ULONG_MAX);
if (buf_getk64l(b, &k)) return (-1);
- if (CMP64(k, >, ulmax)) return (-1);
+ if (CMP64(k, >, ulmax)) { buf_break(b); return (-1); }
*u_out = GET64(unsigned long, k); return (0);
}
else {
CPL64(k, k);
if (CMP64(k, <=, not_lmin)) *i_out = -(long)GET64(unsigned long, k) - 1;
- else return (-1);
+ else { buf_break(b); return (-1); }
}
return (0);
}
if (check_signed_range(i, ir, tv)) return (-1);
*i_out = i; return (0);
}
+static const char size_units[] = "kMGTPEZY";
+
+/* --- @parse_size@ --- *
+ *
+ * Arguments: @struct tvec_state *tv@ = test-vector state
+ * @size_t *u_out@ = where to put the answer
+ * @const char *delims@ = delimiters
+ * @const char *what@ = description of what we're parsing
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Parse a memory size.
+ */
+
+static int parse_size(struct tvec_state *tv, size_t *u_out,
+ const char *delims, const char *what)
+{
+ dstr d = DSTR_INIT;
+ const char *p, *unit;
+ unsigned long u, t;
+ int rc;
+ unsigned f = 0;
+#define f_range 1u
+
+ if (tvec_readword(tv, &d, 0, delims, what)) { rc = -1; goto end; }
+ p = d.buf;
+ if (parse_unsigned_integer(&u, &p, p)) goto bad;
+ if (!*p) tvec_readword(tv, &d, &p, delims, 0);
+
+ if (u > (size_t)-1) goto rangerr;
+ for (t = u, unit = size_units; *unit; unit++) {
+ if (t > (size_t)-1/1024) f |= f_range;
+ else t *= 1024;
+ if (*p == *unit) {
+ if (f&f_range) goto rangerr;
+ u = t; p++; break;
+ }
+ }
+ if (*p == 'B') p++;
+ if (*p) goto bad;
+
+ *u_out = u; rc = 0;
+end:
+ dstr_destroy(&d);
+ return (rc);
+
+bad:
+ tvec_error(tv, "invalid %s `%s'", what, d.buf);
+ rc = -1; goto end;
+
+rangerr:
+ tvec_error(tv, "%s `%s' out of range", what, d.buf);
+ rc = -1; goto end;
+
+#undef f_range
+}
+
+/* --- @format_size@ --- *
+ *
+ * Arguments: @const struct gprintf_ops *gops@ = print operations
+ * @void *go@ = print destination
+ * @unsigned long u@ = a size
+ * @unsigned style@ = style (@TVSF_...@)
+ *
+ * Returns: ---
+ *
+ * Use: Format @u@ as a size in bytes to the destination, expressing
+ * it with a unit prefix if this is possible exactly.
+ */
+
+static void format_size(const struct gprintf_ops *gops, void *go,
+ unsigned long u, unsigned style)
+{
+ const char *unit;
+
+ if (!u || u%1024)
+ gprintf(gops, go, "%lu%sB", u, style&TVSF_COMPACT ? "" : " ");
+ else {
+ for (unit = size_units, u /= 1024;
+ !(u%1024) && unit[1];
+ u /= 1024, unit++);
+ gprintf(gops, go, "%lu%s%cB", u, style&TVSF_COMPACT ? "" : " ", *unit);
+ }
+}
/*----- Floating-point utilities ------------------------------------------*/
/* --- @parse_floating@ --- *
*
* Arguments: @double *x_out@ = where to put the result
+ * @const char *q_out@ = where to leave end pointer, or null
* @const char *p@ = string to parse
* @const struct tvec_floatinfo *fi@ = floating-point info
* @struct tvec_state *tv@ = test vector state
* Returns: Zero on success, @-1@ on error.
*
* Use: Parse a floating-point number from a string. Reports any
- * necessary errors.
+ * necessary errors. If @q_out@ is not null then trailing
+ * material is permitted and a pointer to it (or the end of the
+ * string) is left in @*q_out@.
*/
-static int parse_floating(double *x_out, const char *p,
+static int parse_floating(double *x_out, const char **q_out, const char *p,
const struct tvec_floatinfo *fi,
struct tvec_state *tv)
{
/* Check for special tokens. */
if (STRCMP(p, ==, "#nan")) {
#ifdef NAN
+ if (q_out) *q_out = p + strlen(p);
x = NAN; rc = 0;
#else
tvec_error(tv, "NaN not supported on this system");
else if (STRCMP(p, ==, "#inf") ||
STRCMP(p, ==, "#+inf") || STRCMP(p, ==, "+#inf")) {
#ifdef INFINITY
+ if (q_out) *q_out = p + strlen(p);
x = INFINITY; rc = 0;
#else
tvec_error(tv, "infinity not supported on this system");
else if (STRCMP(p, ==, "#-inf") || STRCMP(p, ==, "-#inf")) {
#ifdef INFINITY
+ if (q_out) *q_out = p + strlen(p);
x = -INFINITY; rc = 0;
#else
tvec_error(tv, "infinity not supported on this system");
/* Parse the number using the system parser. */
olderr = errno; errno = 0;
x = strtod(p, &q);
- if (*q) {
- tvec_syntax(tv, *q, "end-of-line");
- rc = -1; goto end;
- }
+ if (q_out) *q_out = q;
+ else if (*q) { tvec_syntax(tv, *q, "end-of-line"); rc = -1; goto end; }
if (errno && (errno != ERANGE || (x > 0 ? -x : x) == HUGE_VAL)) {
- tvec_error(tv, "invalid floating-point number `%s': %s",
- p, strerror(errno));
+ tvec_error(tv, "invalid floating-point number `%.*s': %s",
+ (int)(q - p), p, strerror(errno));
rc = -1; goto end;
}
errno = olderr;
ungetc(ch, tv->fp);
if (cdc && flush_codec(cdc, &d, tv)) { rc = -1; goto end; }
cdc = 0;
- DRESET(&w); tvec_readword(tv, &w, ";", "character name");
+ DRESET(&w); tvec_readword(tv, &w, 0, ";", "character name");
if (read_charname(&ch, w.buf, RCF_EOFOK)) {
rc = tvec_error(tv, "unknown character name `%s'", d.buf);
goto end;
if (cdc && flush_codec(cdc, &d, tv)) { rc = -1; goto end; }
cdc = 0;
ungetc(ch, tv->fp);
- DRESET(&w); tvec_readword(tv, &w, ";", "`!'-keyword");
+ DRESET(&w); tvec_readword(tv, &w, 0, ";", "`!'-keyword");
/* Change bareword coding system. */
if (STRCMP(w.buf, ==, "!bare"))
goto end;
}
DRESET(&w);
- if (tvec_readword(tv, &w, ";{", "repeat count"))
+ if (tvec_readword(tv, &w, 0, ";{", "repeat count"))
{ rc = -1; goto end; }
if (parse_unsigned_integer(&n, &q, w.buf)) {
rc = tvec_error(tv, "invalid repeat count `%s'", w.buf);
default:
assert(ccl);
ungetc(ch, tv->fp); DRESET(&w);
- if (tvec_readword(tv, &w, ";", "%s-encoded fragment", ccl->name))
+ if (tvec_readword(tv, &w, 0, ";",
+ "%s-encoded fragment", ccl->name))
{ rc = -1; goto end; }
if (!cdc) cdc = ccl->decoder(cdf);
err = cdc->ops->code(cdc, w.buf, w.len, &d);
return (rc);
}
-/*----- Skeleton ----------------------------------------------------------*/
-/*
-static void init_...(union tvec_regval *rv, const struct tvec_regdef *rd)
-static void release_...(union tvec_regval *rv, const struct tvec_regdef *rd)
-static int eq_...(const union tvec_regval *rv0, const union tvec_regval *rv1,
- const struct tvec_regdef *rd)
-static int tobuf_...(buf *b, const union tvec_regval *rv,
- const struct tvec_regdef *rd)
-static int frombuf_...(buf *b, union tvec_regval *rv,
- const struct tvec_regdef *rd)
-static int parse_...(union tvec_regval *rv, const struct tvec_regdef *rd,
- struct tvec_state *tv)
-static void dump_...(const union tvec_regval *rv,
- const struct tvec_regdef *rd,
- struct tvec_state *tv, unsigned style)
-
-const struct tvec_regty tvty_... = {
- init_..., release_..., eq_...,
- tobuf_..., frombuf_...,
- parse_..., dump_...
-};
-*/
/*----- Signed and unsigned integer types ---------------------------------*/
+/* --- @init_int@, @init_uint@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Initialize a register value.
+ *
+ * Integer values are initialized to zero.
+ */
+
static void init_int(union tvec_regval *rv, const struct tvec_regdef *rd)
{ rv->i = 0; }
static void init_uint(union tvec_regval *rv, const struct tvec_regdef *rd)
{ rv->u = 0; }
+/* --- @eq_int@, @eq_uint@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv0, *rv1@ = register values
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Nonzero if the values are equal, zero if unequal
+ *
+ * Use: Compare register values for equality.
+ */
+
static int eq_int(const union tvec_regval *rv0, const union tvec_regval *rv1,
const struct tvec_regdef *rd)
{ return (rv0->i == rv1->i); }
const struct tvec_regdef *rd)
{ return (rv0->u == rv1->u); }
+/* --- @tobuf_int@, @tobuf_uint@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Serialize a register value to a buffer.
+ *
+ * Integer values are serialized as little-endian 64-bit signed
+ * or unsigned integers.
+ */
+
static int tobuf_int(buf *b, const union tvec_regval *rv,
const struct tvec_regdef *rd)
{ return (signed_to_buf(b, rv->i)); }
const struct tvec_regdef *rd)
{ return (unsigned_to_buf(b, rv->u)); }
+/* --- @frombuf_int@, @frombuf_uint@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Deserialize a register value from a buffer.
+ *
+ * Integer values are serialized as 64-bit signed or unsigned
+ * integers.
+ */
+
static int frombuf_int(buf *b, union tvec_regval *rv,
const struct tvec_regdef *rd)
{ return (signed_from_buf(b, &rv->i)); }
const struct tvec_regdef *rd)
{ return (unsigned_from_buf(b, &rv->u)); }
+/* --- @parse_int@, @parse_uint@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * Integers may be input in decimal, hex, binary, or octal,
+ * following approximately usual conventions.
+ *
+ * * Signed integers may be preceded with a `+' or `-' sign.
+ *
+ * * Decimal integers are just a sequence of decimal digits
+ * `0' ... `9'.
+ *
+ * * Octal integers are a sequence of digits `0' ... `7',
+ * preceded by `0o' or `0O'.
+ *
+ * * Hexadecimal integers are a sequence of digits `0'
+ * ... `9', `a' ... `f', or `A' ... `F', preceded by `0x' or
+ * `0X'.
+ *
+ * * Radix-B integers are a sequence of digits `0' ... `9',
+ * `a' ... `f', or `A' ... `F', each with value less than B,
+ * preceded by `Br' or `BR', where 0 < B < 36 is expressed
+ * in decimal without any leading `0' or internal
+ * underscores `_'.
+ *
+ * * A digit sequence may contain internal underscore `_'
+ * separators, but not before or after all of the digits;
+ * and two consecutive `_' characters are not permitted.
+ */
+
static int parse_int(union tvec_regval *rv, const struct tvec_regdef *rd,
struct tvec_state *tv)
{
dstr d = DSTR_INIT;
int rc;
- if (tvec_readword(tv, &d, ";", "signed integer"))
- { rc = -1; goto end; }
- if (parse_signed(&rv->i, d.buf, rd->arg.p, tv))
- { rc = -1; goto end; }
- if (tvec_flushtoeol(tv, 0))
+ if (tvec_readword(tv, &d, 0, ";", "signed integer"))
{ rc = -1; goto end; }
+ if (parse_signed(&rv->i, d.buf, rd->arg.p, tv)) { rc = -1; goto end; }
+ if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
rc = 0;
end:
dstr_destroy(&d);
dstr d = DSTR_INIT;
int rc;
- if (tvec_readword(tv, &d, ";", "unsigned integer"))
- { rc = -1; goto end; }
- if (parse_unsigned(&rv->u, d.buf, rd->arg.p, tv))
- { rc = -1; goto end; }
- if (tvec_flushtoeol(tv, 0))
+ if (tvec_readword(tv, &d, 0, ";", "unsigned integer"))
{ rc = -1; goto end; }
+ if (parse_unsigned(&rv->u, d.buf, rd->arg.p, tv)) { rc = -1; goto end; }
+ if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
rc = 0;
end:
dstr_destroy(&d);
return (rc);
}
+/* --- @dump_int@, @dump_uint@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Integer values are dumped in decimal and, unless compact
+ * output is requested, hex, and maybe a character, as a
+ * comment.
+ */
+
static void dump_int(const union tvec_regval *rv,
const struct tvec_regdef *rd,
unsigned style,
}
}
+/* Integer type definitions. */
const struct tvec_regty tvty_int = {
init_int, trivial_release, eq_int,
tobuf_int, frombuf_int,
parse_int, dump_int
};
+const struct tvec_regty tvty_uint = {
+ init_uint, trivial_release, eq_uint,
+ tobuf_uint, frombuf_uint,
+ parse_uint, dump_uint
+};
+/* Predefined integer ranges. */
const struct tvec_irange
tvrange_schar = { SCHAR_MIN, SCHAR_MAX },
tvrange_short = { SHRT_MIN, SHRT_MAX },
tvrange_sbyte = { -128, 127 },
tvrange_i16 = { -32768, +32767 },
tvrange_i32 = { -2147483648, 2147483647 };
-
-const struct tvec_regty tvty_uint = {
- init_uint, trivial_release, eq_uint,
- tobuf_uint, frombuf_uint,
- parse_uint, dump_uint
-};
-
const struct tvec_urange
tvrange_uchar = { 0, UCHAR_MAX },
tvrange_ushort = { 0, USHRT_MAX },
tvrange_size = { 0, (size_t)-1 },
tvrange_byte = { 0, 255 },
tvrange_u16 = { 0, 65535 },
- tvrange_u32 = { 0, 4294967296 };
+ tvrange_u32 = { 0, 4294967295 };
/* --- @tvec_claimeq_int@ --- *
*
/*----- Floating-point type -----------------------------------------------*/
+/* --- @int_float@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Initialize a register value.
+ *
+ * Floating-point values are initialized to zero.
+ */
+
static void init_float(union tvec_regval *rv, const struct tvec_regdef *rd)
{ rv->f = 0.0; }
+/* --- @eq_float@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv0, *rv1@ = register values
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Nonzero if the values are equal, zero if unequal
+ *
+ * Use: Compare register values for equality.
+ *
+ * Floating-point values may be considered equal if their
+ * absolute or relative difference is sufficiently small, as
+ * described in the register definition.
+ */
+
static int eq_float(const union tvec_regval *rv0,
const union tvec_regval *rv1,
const struct tvec_regdef *rd)
{ return (eqish_floating_p(rv0->f, rv1->f, rd->arg.p)); }
+/* --- @tobuf_float@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Serialize a register value to a buffer.
+ *
+ * Floating-point values are serialized as little-endian
+ * IEEE 754 Binary64.
+ */
+
static int tobuf_float(buf *b, const union tvec_regval *rv,
const struct tvec_regdef *rd)
{ return (buf_putf64l(b, rv->f)); }
+
+/* --- @frombuf_float@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Deserialize a register value from a buffer.
+ *
+ * Floating-point values are serialized as little-endian
+ * IEEE 754 Binary64.
+ */
+
static int frombuf_float(buf *b, union tvec_regval *rv,
const struct tvec_regdef *rd)
{ return (buf_getf64l(b, &rv->f)); }
+/* --- @parse_float@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * Floating-point values are either NaN (%|#nan|%, if supported
+ * by the platform); positive or negative infinity (%|#inf|%,
+ * %|+#inf|%, or %|#+inf|% (preferring the last), and %|-#inf|%
+ * or %|#-inf|% (preferring the latter), if supported by the
+ * platform); or a number in strtod(3) syntax.
+ */
+
static int parse_float(union tvec_regval *rv, const struct tvec_regdef *rd,
struct tvec_state *tv)
{
dstr d = DSTR_INIT;
int rc;
- if (tvec_readword(tv, &d, ";", "floating-point number"))
+ if (tvec_readword(tv, &d, 0, ";", "floating-point number"))
{ rc = -1; goto end; }
- if (parse_floating(&rv->f, d.buf, rd->arg.p, tv))
- { rc = -1; goto end; }
- if (tvec_flushtoeol(tv, 0))
+ if (parse_floating(&rv->f, 0, d.buf, rd->arg.p, tv))
{ rc = -1; goto end; }
+ if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
rc = 0;
end:
dstr_destroy(&d);
return (rc);
}
+/* --- @dump_float@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Floating-point values are dumped in decimal or as a special
+ * token beginning with `%|#|%'. Some effort is taken to ensure
+ * that the output is sufficient to uniquely identify the
+ * original value, but, honestly, C makes this really hard.
+ */
+
static void dump_float(const union tvec_regval *rv,
const struct tvec_regdef *rd,
unsigned style,
const struct gprintf_ops *gops, void *go)
{ format_floating(gops, go, rv->f); }
+/* Floating-point type definition. */
const struct tvec_regty tvty_float = {
init_float, trivial_release, eq_float,
tobuf_float, frombuf_float,
parse_float, dump_float
};
+/* Predefined floating-point ranges. */
+const struct tvec_floatinfo
+ tvflt_finite = { TVFF_EXACT, -DBL_MAX, DBL_MAX, 0.0 },
+ tvflt_nonneg = { TVFF_EXACT, 0, DBL_MAX, 0.0 };
+
/* --- @tvec_claimeqish_float@ --- *
*
* Arguments: @struct tvec_state *tv@ = test-vector state
file, lno, expr));
}
+/*----- Durations ---------------------------------------------------------*/
+
+/* A duration is a floating-point number of seconds. Initialization and
+ * teardown, equality comparison, and serialization are as for floating-point
+ * values.
+ */
+
+static const struct duration_unit {
+ const char *unit;
+ double scale;
+ unsigned f;
+#define DUF_PREFER 1u
+} duration_units[] = {
+ { "Ys", 1e+24, 0 },
+ { "Zs", 1e+21, 0 },
+ { "Es", 1e+18, 0 },
+ { "Ps", 1e+15, 0 },
+ { "Ts", 1e+12, 0 },
+ { "Gs", 1e+9, 0 },
+ { "Ms", 1e+6, 0 },
+ { "ks", 1e+3, 0 },
+ { "hs", 1e+2, 0 },
+ { "das", 1e+1, 0 },
+
+ { "yr", 31557600.0, DUF_PREFER },
+ { "y", 31557600.0, 0 },
+ { "day", 86400.0, DUF_PREFER },
+ { "dy", 86400.0, 0 },
+ { "d", 86400.0, 0 },
+ { "hr", 3600.0, DUF_PREFER },
+ { "hour", 3600.0, 0 },
+ { "h", 3600.0, 0 },
+ { "min", 60.0, DUF_PREFER },
+ { "m", 60.0, 0 },
+
+ { "s", 1.0, DUF_PREFER },
+ { "sec", 1.0, 0 },
+
+ { "ds", 1e-1, 0 },
+ { "cs", 1e-2, 0 },
+ { "ms", 1e-3, DUF_PREFER },
+ { "µs", 1e-6, DUF_PREFER },
+ { "ns", 1e-9, DUF_PREFER },
+ { "ps", 1e-12, DUF_PREFER },
+ { "fs", 1e-15, DUF_PREFER },
+ { "as", 1e-18, DUF_PREFER },
+ { "zs", 1e-21, DUF_PREFER },
+ { "ys", 1e-24, DUF_PREFER },
+
+ { 0 }
+};
+
+/* --- @tvec_parsedurunit@ --- *
+ *
+ * Arguments: @double *scale_out@ = where to leave the scale
+ * @const char **p_inout@ = input unit string, updated
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: If @*p_inout@ begins with a unit string followed by the end
+ * of the string or some non-alphanumeric character, then store
+ * the corresponding scale factor in @*scale_out@, advance
+ * @*p_inout@ past the unit string, and return zero. Otherwise,
+ * return %$-1$%.
+ */
+
+int tvec_parsedurunit(double *scale_out, const char **p_inout)
+{
+ const char *p = *p_inout, *q;
+ const struct duration_unit *u;
+ size_t n;
+
+ while (ISSPACE(*p)) p++;
+ for (q = p; *q && ISALNUM(*q); q++);
+ n = q - p; if (!n) { *scale_out = 1.0; return (0); }
+
+ for (u = duration_units; u->unit; u++)
+ if (STRNCMP(p, ==, u->unit, n) && !u->unit[n])
+ { *scale_out = u->scale; *p_inout = q; return (0); }
+ return (-1);
+}
+
+/* --- @parse_duration@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * Duration values are finite nonnegative floating-point
+ * numbers in @strtod@ syntax, optionally followed by a unit .
+ */
+
+static int parse_duration(union tvec_regval *rv,
+ const struct tvec_regdef *rd,
+ struct tvec_state *tv)
+{
+ const struct duration_unit *u;
+ const char *q;
+ dstr d = DSTR_INIT;
+ double t;
+ int rc;
+
+ if (tvec_readword(tv, &d, 0, ";", "duration")) { rc = -1; goto end; }
+ if (parse_floating(&t, &q, d.buf,
+ rd->arg.p ? rd->arg.p : &tvflt_nonneg, tv))
+ { rc = -1; goto end; }
+
+ if (!*q) tvec_readword(tv, &d, &q, ";", 0);
+ if (*q) {
+ for (u = duration_units; u->unit; u++)
+ if (STRCMP(q, ==, u->unit)) { t *= u->scale; goto found_unit; }
+ rc = tvec_syntax(tv, *q, "end-of-line"); goto end;
+ found_unit:;
+ }
+
+ if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
+ rv->f = t; rc = 0;
+end:
+ dstr_destroy(&d);
+ return (rc);
+}
+
+/* --- @dump_duration@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Durations are dumped as a human-palatable scaled value with
+ * unit, and, if compact style is not requested, as a raw number
+ * of seconds at full precision as a comment.
+ */
+
+static void dump_duration(const union tvec_regval *rv,
+ const struct tvec_regdef *rd,
+ unsigned style,
+ const struct gprintf_ops *gops, void *go)
+{
+ const struct duration_unit *u;
+ double t = rv->f;
+
+ if (!t) u = 0;
+ else {
+ for (u = duration_units; u->scale > t && u[1].unit; u++);
+ t /= u->scale;
+ }
+
+ gprintf(gops, go, "%.4g %s", t, u ? u->unit : "s");
+ if (!(style&TVSF_COMPACT)) {
+ gprintf(gops, go, "; = ");
+ format_floating(gops, go, rv->f);
+ gprintf(gops, go, " s");
+ }
+}
+
+/* Duration type definition. */
+const struct tvec_regty tvty_duration = {
+ init_float, trivial_release, eq_float,
+ tobuf_float, frombuf_float,
+ parse_duration, dump_duration
+};
+
/*----- Enumerations ------------------------------------------------------*/
+/* --- @init_tenum@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Initialize a register value.
+ *
+ * Integer and floating-point enumeration values are initialized
+ * as their underlying representations. Pointer enumerations
+ * are initialized to %|#nil|%.
+ */
+
#define init_ienum init_int
#define init_uenum init_uint
#define init_fenum init_float
+
static void init_penum(union tvec_regval *rv, const struct tvec_regdef *rd)
{ rv->p = 0; }
+/* --- @eq_tenum@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv0, *rv1@ = register values
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Nonzero if the values are equal, zero if unequal
+ *
+ * Use: Compare register values for equality.
+ *
+ * Integer and floating-point enumeration values are compared as
+ * their underlying representations; in particular, floating-
+ * point enumerations may compare equal if their absolute or
+ * relative difference is sufficiently small. Pointer
+ * enumerations are compared as pointers.
+ */
+
#define eq_ienum eq_int
#define eq_uenum eq_uint
+
static int eq_fenum(const union tvec_regval *rv0,
const union tvec_regval *rv1,
const struct tvec_regdef *rd)
const struct tvec_fenuminfo *ei = rd->arg.p;
return (eqish_floating_p(rv0->f, rv1->f, ei->fi));
}
+
static int eq_penum(const union tvec_regval *rv0,
const union tvec_regval *rv1,
const struct tvec_regdef *rd)
{ return (rv0->p == rv1->p); }
+/* --- @tobuf_tenum@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Serialize a register value to a buffer.
+ *
+ * Integer and floating-point enumeration values are serialized
+ * as their underlying representations. Pointer enumerations
+ * are serialized as the signed integer index into the
+ * association table; %|#nil|% serializes as %$-1$%, and
+ * unrecognized pointers cause failure.
+ */
+
#define tobuf_ienum tobuf_int
#define tobuf_uenum tobuf_uint
#define tobuf_fenum tobuf_float
+
static int tobuf_penum(buf *b, const union tvec_regval *rv,
const struct tvec_regdef *rd)
{
return (signed_to_buf(b, i));
}
-#define frombuf_ienum frombuf_int
-#define frombuf_uenum frombuf_uint
-#define frombuf_fenum frombuf_float
-static int frombuf_penum(buf *b, union tvec_regval *rv,
- const struct tvec_regdef *rd)
+/* --- @frombuf_tenum@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Deserialize a register value from a buffer.
+ *
+ * Integer and floating-point enumeration values are serialized
+ * as their underlying representations. Pointer enumerations
+ * are serialized as the signed integer index into the
+ * association table; %|#nil|% serializes as %$-1$%; out-of-
+ * range indices cause failure.
+ */
+
+#define frombuf_ienum frombuf_int
+#define frombuf_uenum frombuf_uint
+#define frombuf_fenum frombuf_float
+static int frombuf_penum(buf *b, union tvec_regval *rv,
+ const struct tvec_regdef *rd)
{
const struct tvec_penuminfo *pei = rd->arg.p;
const struct tvec_passoc *pa;
if (signed_from_buf(b, &i)) return (-1);
if (0 <= i && i < n) rv->p = (/*unconst*/ void *)pei->av[i].p;
else if (i == -1) rv->p = 0;
- else return (-1);
+ else { buf_break(b); return (-1); }
return (0);
}
+/* --- @parse_tenum@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * An enumerated value may be given by name or as a literal
+ * value. For enumerations based on numeric types, the literal
+ * values can be written in the same syntax as the underlying
+ * values. For enumerations based on pointers, the only
+ * permitted literal is %|#nil|%, which denotes a null pointer.
+ */
+
#define DEFPARSE_ENUM(tag_, ty, slot) \
static int parse_##slot##enum(union tvec_regval *rv, \
const struct tvec_regdef *rd, \
dstr d = DSTR_INIT; \
int rc; \
\
- if (tvec_readword(tv, &d, ";", "enumeration tag or " LITSTR_##tag_)) \
+ if (tvec_readword(tv, &d, 0, ";", "enumeration tag or " LITSTR_##tag_)) \
{ rc = -1; goto end; } \
for (a = ei->av; a->tag; a++) \
if (STRCMP(a->tag, ==, d.buf)) { FOUND_##tag_ goto done; } \
#define LITSTR_FLT "literal floating-point number, " \
"`#-inf', `#+inf', or `#nan'"
#define FOUND_FLT rv->f = a->f;
-#define MISSING_FLT if (parse_floating(&rv->f, d.buf, ei->fi, tv)) \
+#define MISSING_FLT if (parse_floating(&rv->f, 0, d.buf, ei->fi, tv)) \
{ rc = -1; goto end; }
#define LITSTR_PTR "`#nil'"
#undef DEFPARSE_ENUM
+/* --- @dump_tenum@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Enumeration values are dumped as their symbolic names, if
+ * possible, with the underlying values provided as a comment
+ * unless compact output is requested, as for the underlying
+ * representation. A null pointer is printed as %|#nil|%;
+ * non-null pointers are printed as %|#<TYPE PTR>|%, with the
+ * enumeration TYPE and the raw pointer PTR printed with the
+ * system's %|%p|% format specifier.
+ */
+
+
#define DEFDUMP_ENUM(tag_, ty, slot) \
static void dump_##slot##enum(const union tvec_regval *rv, \
const struct tvec_regdef *rd, \
}
#define MAYBE_PRINT_EXTRA \
- if (style&TVSF_COMPACT) ; \
+ if (style&TVSF_COMPACT) /* nothing to do */; \
else if (!a->tag) { gprintf(gops, go, " ; = "); goto _extra; } \
else if (1) { gprintf(gops, go, " = "); goto _extra; } \
else _extra:
#undef MAYBE_PRINT_EXTRA
#undef DEFDUMP_ENUM
+/* Enumeration type definitions. */
#define DEFTY_ENUM(tag, ty, slot) \
const struct tvec_regty tvty_##slot##enum = { \
init_##slot##enum, trivial_release, eq_##slot##enum, \
TVEC_MISCSLOTS(DEFTY_ENUM)
#undef DEFTY_ENUM
+/* Predefined enumeration types. */
static const struct tvec_iassoc bool_assoc[] = {
{ "nil", 0 },
{ "false", 0 },
{ "y", 1 },
{ "on", 1 },
- { 0, 0 }
+ TVEC_ENDENUM
};
const struct tvec_ienuminfo tvenum_bool =
{ "bool", bool_assoc, &tvrange_int };
+static const struct tvec_iassoc cmp_assoc[] = {
+ { "<", -1 },
+ { "less", -1 },
+ { "lt", -1 },
+
+ { "=", 0 },
+ { "equal", 0 },
+ { "eq", 0 },
+
+ { ">", +1 },
+ { "greater", +1 },
+ { "gt", +1 },
+
+ TVEC_ENDENUM
+};
+
+const struct tvec_ienuminfo tvenum_cmp =
+ { "cmp", cmp_assoc, &tvrange_int };
+
/* --- @tvec_claimeq_tenum@ --- *
*
* Arguments: @struct tvec_state *tv@ = test-vector state
/*----- Flag types --------------------------------------------------------*/
+/* Flag types are initialized, compared, and serialized as unsigned
+ * integers.
+ */
+
+/* --- @parse_flags@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * The input syntax is a sequence of items separated by `|'
+ * signs. Each item may be the symbolic name of a field value,
+ * or a literal unsigned integer. The masks associated with the
+ * given symbolic names must be disjoint. The resulting
+ * numerical value is simply the bitwise OR of the given values.
+ */
+
static int parse_flags(union tvec_regval *rv, const struct tvec_regdef *rd,
struct tvec_state *tv)
{
int ch, rc;
for (;;) {
+
+ /* Read the next item. */
DRESET(&d);
- if (tvec_readword(tv, &d, "|;", "flag name or integer"))
+ if (tvec_readword(tv, &d, 0, "|;", "flag name or integer"))
{ rc = -1; goto end; }
+ /* Try to find a matching entry in the table. */
for (f = fi->fv; f->tag; f++)
if (STRCMP(f->tag, ==, d.buf)) {
if (m&f->m)
{ m |= f->m; v |= f->v; goto next; }
}
+ /* Otherwise, try to parse it as a raw integer. */
if (parse_unsigned(&t, d.buf, fi->range, tv))
{ rc = -1; goto end; }
v |= t;
+
next:
+ /* Advance to the next token. If it's a separator then consume it, and
+ * go round again. Otherwise we stop here.
+ */
if (tvec_nexttoken(tv)) break;
ch = getc(tv->fp);
if (ch != '|') { tvec_syntax(tv, ch, "`|'"); rc = -1; goto end; }
- if (tvec_nexttoken(tv))
+ if (tvec_nexttoken(tv))
{ tvec_syntax(tv, '\n', "flag name or integer"); rc = -1; goto end; }
}
- rv->u = v;
- rc = 0;
+
+ /* Done. */
+ rv->u = v; rc = 0;
end:
dstr_destroy(&d);
return (rc);
}
+/* --- @dump_flags@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * The table of symbolic names and their associated values and
+ * masks is repeatedly scanned, in order, to find disjoint
+ * matches -- i.e., entries whose value matches the target value
+ * in the bit positions indicated by the mask, and whose mask
+ * doesn't overlap with any previously found matches; the names
+ * are then output, separated by `|'. Any remaining nonzero
+ * bits not covered by any of the matching masks are output as a
+ * single literal integer, in hex.
+ *
+ * Unless compact output is requested, or no symbolic names were
+ * found, the raw numeric value is also printed in hex, as a
+ * comment.
+ */
+
static void dump_flags(const union tvec_regval *rv,
const struct tvec_regdef *rd,
unsigned style,
{
const struct tvec_flaginfo *fi = rd->arg.p;
const struct tvec_flag *f;
- unsigned long m = ~(unsigned long)0, v = rv->u;
+ unsigned long m = ~0ul, v = rv->u;
const char *sep;
for (f = fi->fv, sep = ""; f->tag; f++)
if (v&m) gprintf(gops, go, "%s0x%0*lx", sep, hex_width(v), v&m);
- if (!(style&TVSF_COMPACT))
+ if (m != ~0ul && !(style&TVSF_COMPACT))
gprintf(gops, go, " ; = 0x%0*lx", hex_width(rv->u), rv->u);
}
+/* Flags type definition. */
const struct tvec_regty tvty_flags = {
init_uint, trivial_release, eq_uint,
tobuf_uint, frombuf_uint,
/*----- Characters --------------------------------------------------------*/
+/* Character values are initialized and compared as signed integers. */
+
+/* --- @tobuf_char@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Serialize a register value to a buffer.
+ *
+ * Character values are serialized as little-endian 32-bit
+ * unsigned integers, with %|EOF|% serialized as all-bits-set.
+ */
+
static int tobuf_char(buf *b, const union tvec_regval *rv,
const struct tvec_regdef *rd)
{
uint32 u;
+
if (0 <= rv->i && rv->i <= UCHAR_MAX) u = rv->i;
else if (rv->i == EOF) u = MASK32;
- else return (-1);
+ else { buf_break(b); return (-1); }
return (buf_putu32l(b, u));
}
+/* --- @frombuf_char@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Deserialize a register value from a buffer.
+ *
+ * Character values are serialized as little-endian 32-bit
+ * unsigned integers, with %|EOF|% serialized as all-bits-set.
+ */
+
static int frombuf_char(buf *b, union tvec_regval *rv,
const struct tvec_regdef *rd)
{
if (buf_getu32l(b, &u)) return (-1);
if (0 <= u && u <= UCHAR_MAX) rv->i = u;
else if (u == MASK32) rv->i = EOF;
- else return (-1);
+ else { buf_break(b); return (-1); }
return (0);
}
+/* --- @parse_char@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * A character value can be given by symbolic name, with a
+ * leading `%|#|%'; or a character or `%|\|%'-escape sequence,
+ * optionally in single quotes.
+ *
+ * The following escape sequences and character names are
+ * recognized.
+ *
+ * * `%|#eof|%' is the special end-of-file marker.
+ *
+ * * `%|#nul|%' is the NUL character, sometimes used to
+ * terminate strings.
+ *
+ * * `%|bell|%', `%|bel|%', `%|ding|%', or `%|\a|%' is the BEL
+ * character used to ring the terminal bell (or do some other
+ * thing to attract the user's attention).
+ *
+ * * %|#backspace|%, %|#bs|%, or %|\b|% is the backspace
+ * character, used to move the cursor backwords by one cell.
+ *
+ * * %|#escape|% %|#esc|%, or%|\e|% is the escape character,
+ * used to introduce special terminal commands.
+ *
+ * * %|#formfeed|%, %|#ff|%, or %|\f|% is the formfeed
+ * character, used to separate pages of text.
+ *
+ * * %|#newline|%, %|#linefeed|%, %|#lf|%, %|#nl|%, or %|\n|% is
+ * the newline character, used to terminate lines of text or
+ * advance the cursor to the next line (perhaps without
+ * returning it to the start of the line).
+ *
+ * * %|#return|%, %|#carriage-return|%, %|#cr|%, or %|\r|% is
+ * the carriage-return character, used to return the cursor to
+ * the start of the line.
+ *
+ * * %|#tab|%, %|#horizontal-tab|%, %|#ht|%, or %|\t|% is the
+ * tab character, used to advance the cursor to the next tab
+ * stop on the current line.
+ *
+ * * %|#vertical-tab|%, %|#vt|%, %|\v|% is the vertical tab
+ * character.
+ *
+ * * %|#space|%, %|#spc|% is the space character.
+ *
+ * * %|#delete|%, %|#del|% is the delete character, used to
+ * erase the most recent character.
+ *
+ * * %|\'|% is the single-quote character.
+ *
+ * * %|\\|% is the backslash character.
+ *
+ * * %|\"|% is the double-quote character.
+ *
+ * * %|\NNN|% or %|\{NNN}|% is the character with code NNN in
+ * octal. The NNN may be up to three digits long.
+ *
+ * * %|\xNN|% or %|\x{NN}|% is the character with code NNN in
+ * hexadecimal.
+ */
+
static int parse_char(union tvec_regval *rv, const struct tvec_regdef *rd,
struct tvec_state *tv)
{
unsigned f = 0;
#define f_quote 1u
+ /* Inspect the character to see what we're up against. */
ch = getc(tv->fp);
+
if (ch == '#') {
+ /* It looks like a special token. Push the `%|#|%' back and fetch the
+ * whole word. If there's just the `%|#|%' after all, then treat it as
+ * literal.
+ */
+
ungetc(ch, tv->fp);
- if (tvec_readword(tv, &d, ";", "character name")) { rc = -1; goto end; }
- if (read_charname(&ch, d.buf, RCF_EOFOK)) {
- rc = tvec_error(tv, "unknown character name `%s'", d.buf);
- goto end;
+ if (tvec_readword(tv, &d, 0, ";", "character name"))
+ { rc = -1; goto end; }
+ if (STRCMP(d.buf, !=, "#")) {
+ if (read_charname(&ch, d.buf, RCF_EOFOK)) {
+ rc = tvec_error(tv, "unknown character name `%s'", d.buf);
+ goto end;
+ }
+ if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
+ rv->i = ch; rc = 0; goto end;
}
- if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
- rv->i = ch; rc = 0; goto end;
}
+ /* If this is a single quote then we expect to see a matching one later,
+ * and we should process backslash escapes. Get the next character and see
+ * what happens.
+ */
if (ch == '\'') { f |= f_quote; ch = getc(tv->fp); }
+
+ /* Main character dispatch. */
switch (ch) {
+
case ';':
+ /* Unquoted, semicolon begins a comment. */
if (!(f&f_quote)) { rc = tvec_syntax(tv, ch, "character"); goto end; }
- goto plain;
+ else goto plain;
+
case '\n':
- if (f&f_quote)
- { f &= ~f_quote; ungetc(ch, tv->fp); ch = '\''; goto plain; }
+ /* A newline. If we saw a single quote, then treat that as literal.
+ * Otherwise this is an error.
+ */
+ if (!(f&f_quote)) goto nochar;
+ else { f &= ~f_quote; ungetc(ch, tv->fp); ch = '\''; goto plain; }
+
case EOF:
- if (f&f_quote) { f &= ~f_quote; ch = '\''; goto plain; }
- /* fall through */
- case '\'':
+ /* End-of-file. Similar to newline, but with slightly different
+ * effects on the parse state.
+ */
+ if (!(f&f_quote)) goto nochar;
+ else { f &= ~f_quote; ch = '\''; goto plain; }
+
+ case '\'': nochar:
+ /* A single quote. This must be the second of a pair, and there should
+ * have been a character or escape sequence between them.
+ */
rc = tvec_syntax(tv, ch, "character"); goto end;
+
case '\\':
+ /* A backslash. Read a character escape. */
if (read_charesc(&ch, tv)) return (-1);
+
default: plain:
+ /* Anything else. Treat as literal. */
rv->i = ch; break;
}
+
+ /* If we saw an opening quote, then expect the closing quote. */
if (f&f_quote) {
ch = getc(tv->fp);
if (ch != '\'') { rc = tvec_syntax(tv, ch, "`''"); goto end; }
}
+
+ /* Done. */
if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
rc = 0;
end:
#undef f_quote
}
+/* --- @dump_char@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Character values are dumped as their symbolic names, if any,
+ * or as a character or escape sequence within single quotes
+ * (which may be omitted in compact style). If compact output
+ * is not requested, then the single-quoted representation (for
+ * characters dumped as symbolic names) and integer code in
+ * decimal and hex are printed as a comment.
+ */
+
static void dump_char(const union tvec_regval *rv,
const struct tvec_regdef *rd,
unsigned style,
unsigned f = 0;
#define f_semi 1u
+ /* Print a character name if we can find one. */
p = find_charname(rv->i, (style&TVSF_COMPACT) ? CTF_SHORT : CTF_PREFER);
if (p) {
gprintf(gops, go, "%s", p);
else { gprintf(gops, go, " ;"); f |= f_semi; }
}
+ /* If the character isn't @EOF@ then print it as a single-quoted thing.
+ * In compact style, see if we can omit the quotes.
+ */
if (rv->i >= 0) {
if (f&f_semi) gprintf(gops, go, " = ");
switch (rv->i) {
}
}
+ /* And the character code as an integer. */
if (!(style&TVSF_COMPACT)) {
if (!(f&f_semi)) gprintf(gops, go, " ;");
gprintf(gops, go, " = %ld = ", rv->i);
#undef f_semi
}
+/* Character type definition. */
const struct tvec_regty tvty_char = {
init_int, trivial_release, eq_int,
tobuf_char, frombuf_char,
/*----- Text and byte strings ---------------------------------------------*/
-static void init_string(union tvec_regval *rv, const struct tvec_regdef *rd)
- { rv->str.p = 0; rv->str.sz = 0; }
+/* --- @init_text@, @init_bytes@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Initialize a register value.
+ *
+ * Text and binary string values are initialized with a null
+ * pointer and zero length.
+ */
+
+static void init_text(union tvec_regval *rv, const struct tvec_regdef *rd)
+ { rv->text.p = 0; rv->text.sz = 0; }
static void init_bytes(union tvec_regval *rv, const struct tvec_regdef *rd)
{ rv->bytes.p = 0; rv->bytes.sz = 0; }
-static void release_string(union tvec_regval *rv,
- const struct tvec_regdef *rd)
- { xfree(rv->str.p); }
+/* --- @release_string@, @release_bytes@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Release resources held by a register value.
+ *
+ * Text and binary string buffers are freed.
+ */
+
+static void release_text(union tvec_regval *rv,
+ const struct tvec_regdef *rd)
+ { xfree(rv->text.p); }
static void release_bytes(union tvec_regval *rv,
const struct tvec_regdef *rd)
{ xfree(rv->bytes.p); }
-static int eq_string(const union tvec_regval *rv0,
- const union tvec_regval *rv1,
- const struct tvec_regdef *rd)
+/* --- @eq_text@, @eq_bytes@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv0, *rv1@ = register values
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Nonzero if the values are equal, zero if unequal
+ *
+ * Use: Compare register values for equality.
+ */
+
+static int eq_text(const union tvec_regval *rv0,
+ const union tvec_regval *rv1,
+ const struct tvec_regdef *rd)
{
- return (rv0->str.sz == rv1->str.sz &&
- (!rv0->bytes.sz ||
- MEMCMP(rv0->str.p, ==, rv1->str.p, rv1->str.sz)));
+ return (rv0->text.sz == rv1->text.sz &&
+ (!rv0->text.sz ||
+ MEMCMP(rv0->text.p, ==, rv1->text.p, rv1->text.sz)));
}
static int eq_bytes(const union tvec_regval *rv0,
MEMCMP(rv0->bytes.p, ==, rv1->bytes.p, rv1->bytes.sz)));
}
-static int tobuf_string(buf *b, const union tvec_regval *rv,
- const struct tvec_regdef *rd)
- { return (buf_putmem32l(b, rv->str.p, rv->str.sz)); }
+/* --- @tobuf_text@, @tobuf_bytes@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Serialize a register value to a buffer.
+ *
+ * Text and binary string values are serialized as a little-
+ * endian 64-bit length %$n$% in bytes followed by %$n$% bytes
+ * of string data.
+ */
+
+static int tobuf_text(buf *b, const union tvec_regval *rv,
+ const struct tvec_regdef *rd)
+ { return (buf_putmem64l(b, rv->text.p, rv->text.sz)); }
static int tobuf_bytes(buf *b, const union tvec_regval *rv,
const struct tvec_regdef *rd)
- { return (buf_putmem32l(b, rv->bytes.p, rv->bytes.sz)); }
+ { return (buf_putmem64l(b, rv->bytes.p, rv->bytes.sz)); }
-static int frombuf_string(buf *b, union tvec_regval *rv,
- const struct tvec_regdef *rd)
+/* --- @frombuf_text@, @frombuf_bytes@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Deserialize a register value from a buffer.
+ *
+ * Text and binary string values are serialized as a little-
+ * endian 64-bit length %$n$% in bytes followed by %$n$% bytes
+ * of string data.
+ */
+
+static int frombuf_text(buf *b, union tvec_regval *rv,
+ const struct tvec_regdef *rd)
{
const void *p;
size_t sz;
- p = buf_getmem32l(b, &sz); if (!p) return (-1);
- tvec_allocstring(rv, sz); memcpy(rv->str.p, p, sz); rv->str.p[sz] = 0;
+ p = buf_getmem64l(b, &sz); if (!p) return (-1);
+ tvec_alloctext(rv, sz); memcpy(rv->text.p, p, sz); rv->text.p[sz] = 0;
return (0);
}
const void *p;
size_t sz;
- p = buf_getmem32l(b, &sz); if (!p) return (-1);
+ p = buf_getmem64l(b, &sz); if (!p) return (-1);
tvec_allocbytes(rv, sz); memcpy(rv->bytes.p, p, sz);
return (0);
}
+/* --- @check_string_length@ --- *
+ *
+ * Arguments: @size_t sz@ = found string length
+ * @const struct tvec_urange *ur@ = acceptable range
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Checks that @sz@ is within the bounds described by @ur@,
+ * reporting an error if not.
+ */
+
static int check_string_length(size_t sz, const struct tvec_urange *ur,
struct tvec_state *tv)
{
return (0);
}
-static int parse_string(union tvec_regval *rv, const struct tvec_regdef *rd,
- struct tvec_state *tv)
+/* --- @parse_text@, @parse_bytes@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * The input format for both kinds of strings is basically the
+ * same: a `compound string', consisting of
+ *
+ * * single-quoted strings, which are interpreted entirely
+ * literally, but can't contain single quotes or newlines;
+ *
+ * * double-quoted strings, in which `%|\|%'-escapes are
+ * interpreted as for characters;
+ *
+ * * character names, marked by an initial `%|#|%' sign;
+ *
+ * * special tokens marked by an initial `%|!|%' sign; or
+ *
+ * * barewords interpreted according to the current coding
+ * scheme.
+ *
+ * The special tokens are
+ *
+ * * `%|!bare|%', which causes subsequent sequences of
+ * barewords to be treated as plain text;
+ *
+ * * `%|!hex|%', `%|!base32|%', `%|!base64|%', which cause
+ * subsequent barewords to be decoded in the requested
+ * manner.
+ *
+ * * `%|!repeat|% %$n$% %|{|% %%\textit{string}%% %|}|%',
+ * which includes %$n$% copies of the (compound) string.
+ *
+ * The only difference between text and binary strings is that
+ * the initial coding scheme is %|bare|% for text strings and
+ * %|hex|% for binary strings.
+ */
+
+static int parse_text(union tvec_regval *rv, const struct tvec_regdef *rd,
+ struct tvec_state *tv)
{
- void *p = rv->str.p;
+ void *p = rv->text.p;
- if (read_compound_string(&p, &rv->str.sz, TVCODE_BARE, 0, tv))
+ if (read_compound_string(&p, &rv->text.sz, TVCODE_BARE, 0, tv))
return (-1);
- rv->str.p = p;
- if (check_string_length(rv->str.sz, rd->arg.p, tv)) return (-1);
+ rv->text.p = p;
+ if (check_string_length(rv->text.sz, rd->arg.p, tv)) return (-1);
return (0);
}
return (0);
}
-static void dump_string(const union tvec_regval *rv,
- const struct tvec_regdef *rd,
- unsigned style,
- const struct gprintf_ops *gops, void *go)
+/* --- @dump_text@, @dump_bytes@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Text string values are dumped as plain text, in double quotes
+ * if necessary, and using backslash escape sequences for
+ * nonprintable characters. Unless compact output is requested,
+ * strings consisting of multiple lines are dumped with each
+ * line of the string on a separate output line.
+ *
+ * Binary string values are dumped in hexadecimal. In compact
+ * style, the output simply consists of a single block of hex
+ * digits. Otherwise, the dump is a display consisting of
+ * groups of hex digits, with comments showing the offset (if
+ * the string is long enough) and the corresponding plain text.
+ *
+ * Empty strings are dumped as %|""|%.
+ */
+
+static void dump_text(const union tvec_regval *rv,
+ const struct tvec_regdef *rd,
+ unsigned style,
+ const struct gprintf_ops *gops, void *go)
{
const unsigned char *p, *q, *l;
unsigned f = 0;
#define f_nonword 1u
#define f_newline 2u
- if (!rv->str.sz) { gprintf(gops, go, "\"\""); return; }
+ if (!rv->text.sz) { gprintf(gops, go, "\"\""); return; }
- p = (const unsigned char *)rv->str.p; l = p + rv->str.sz;
+ p = (const unsigned char *)rv->text.p; l = p + rv->text.sz;
switch (*p) {
case '!': case '#': case ';': case '"': case '\'':
case '(': case '{': case '[': case ']': case '}': case ')':
if (f&f_newline) { gprintf(gops, go, "\n\t"); goto quote; }
else if (f&f_nonword) goto quote;
- gops->putm(go, (const char *)p, rv->str.sz);
+ gops->putm(go, (const char *)p, rv->text.sz);
return;
quote:
}
}
-const struct tvec_regty tvty_string = {
- init_string, release_string, eq_string,
- tobuf_string, frombuf_string,
- parse_string, dump_string
+/* Text and byte string type definitions. */
+const struct tvec_regty tvty_text = {
+ init_text, release_text, eq_text,
+ tobuf_text, frombuf_text,
+ parse_text, dump_text
};
-
const struct tvec_regty tvty_bytes = {
init_bytes, release_bytes, eq_bytes,
tobuf_bytes, frombuf_bytes,
parse_bytes, dump_bytes
};
-/* --- @tvec_claimeq_string@ --- *
+/* --- @tvec_claimeq_text@ --- *
*
* Arguments: @struct tvec_state *tv@ = test-vector state
* @const char *p0@, @size_t sz0@ = first string with length
* value and @p1@ is printed as the input reference.
*/
-int tvec_claimeq_string(struct tvec_state *tv,
- const char *p0, size_t sz0,
- const char *p1, size_t sz1,
- const char *file, unsigned lno, const char *expr)
+int tvec_claimeq_text(struct tvec_state *tv,
+ const char *p0, size_t sz0,
+ const char *p1, size_t sz1,
+ const char *file, unsigned lno, const char *expr)
{
- tv->out[0].v.str.p = (/*unconst*/ char *)p0; tv->out[0].v.str.sz = sz0;
- tv->in[0].v.str.p =(/*unconst*/ char *) p1; tv->in[0].v.str.sz = sz1;
- return (tvec_claimeq(tv, &tvty_string, 0, file, lno, expr));
+ tv->out[0].v.text.p = (/*unconst*/ char *)p0; tv->out[0].v.text.sz = sz0;
+ tv->in[0].v.text.p =(/*unconst*/ char *) p1; tv->in[0].v.text.sz = sz1;
+ return (tvec_claimeq(tv, &tvty_text, 0, file, lno, expr));
}
-/* --- @tvec_claimeq_strz@ --- *
+/* --- @tvec_claimeq_textz@ --- *
*
* Arguments: @struct tvec_state *tv@ = test-vector state
* @const char *p0, *p1@ = two strings to compare
* explicitly.
*/
-int tvec_claimeq_strz(struct tvec_state *tv,
- const char *p0, const char *p1,
- const char *file, unsigned lno, const char *expr)
+int tvec_claimeq_textz(struct tvec_state *tv,
+ const char *p0, const char *p1,
+ const char *file, unsigned lno, const char *expr)
{
- tv->out[0].v.str.p = (/*unconst*/ char *)p0;
- tv->out[0].v.str.sz = strlen(p0);
- tv->in[0].v.str.p = (/*unconst*/ char *)p1;
- tv->in[0].v.str.sz = strlen(p1);
- return (tvec_claimeq(tv, &tvty_string, 0, file, lno, expr));
+ tv->out[0].v.text.p = (/*unconst*/ char *)p0;
+ tv->out[0].v.text.sz = strlen(p0);
+ tv->in[0].v.text.p = (/*unconst*/ char *)p1;
+ tv->in[0].v.text.sz = strlen(p1);
+ return (tvec_claimeq(tv, &tvty_text, 0, file, lno, expr));
}
/* --- @tvec_claimeq_bytes@ --- *
return (tvec_claimeq(tv, &tvty_bytes, 0, file, lno, expr));
}
-/* --- @tvec_allocstring@, @tvec_allocbytes@ --- *
+/* --- @tvec_alloctext@, @tvec_allocbytes@ --- *
*
* Arguments: @union tvec_regval *rv@ = register value
* @size_t sz@ = required size
* the old buffer contents are simply discarded if reallocation
* is necessary. Instead, use a @dbuf@ or @dstr@.
*
- * The @tvec_allocstring@ function sneakily allocates an extra
+ * The @tvec_alloctext@ function sneakily allocates an extra
* byte for a terminating zero. The @tvec_allocbytes@ function
* doesn't do this.
*/
-void tvec_allocstring(union tvec_regval *rv, size_t sz)
+void tvec_alloctext(union tvec_regval *rv, size_t sz)
{
- if (rv->str.sz <= sz) { xfree(rv->str.p); rv->str.p = xmalloc(sz + 1); }
- rv->str.sz = sz;
+ if (rv->text.sz <= sz) { xfree(rv->text.p); rv->text.p = xmalloc(sz + 1); }
+ rv->text.sz = sz;
}
void tvec_allocbytes(union tvec_regval *rv, size_t sz)
/*----- Buffer type -------------------------------------------------------*/
+/* --- @init_buffer@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Initialize a register value.
+ *
+ * Buffer values values are initialized with a null pointer,
+ * zero length, and zero residue, modulus, and offset.
+ */
+
+static void init_buffer(union tvec_regval *rv, const struct tvec_regdef *rd)
+ { rv->buf.p = 0; rv->buf.sz = rv->buf.a = rv->buf.m = rv->buf.off = 0; }
+
+/* --- @release_buffer@, @release_bytes@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: ---
+ *
+ * Use: Release resources held by a register value.
+ *
+ * Buffers are freed.
+ */
+
+static void release_buffer(union tvec_regval *rv,
+ const struct tvec_regdef *rd)
+ { if (rv->buf.p) xfree(rv->buf.p - rv->buf.off); }
+
+/* --- @eq_buffer@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv0, *rv1@ = register values
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Nonzero if the values are equal, zero if unequal
+ *
+ * Use: Compare register values for equality.
+ *
+ * Buffer values are equal if and only if their sizes and
+ * alignment parameters are equal; their contents are
+ * %%\emph{not}%% compared.
+ */
+
static int eq_buffer(const union tvec_regval *rv0,
const union tvec_regval *rv1,
const struct tvec_regdef *rd)
- { return (rv0->bytes.sz == rv1->bytes.sz); }
+{
+ return (rv0->buf.sz == rv1->buf.sz &&
+ rv0->buf.a == rv1->buf.a &&
+ rv0->buf.m == rv1->buf.m);
+}
+
+/* --- @tobuf_buffer@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Serialize a register value to a buffer.
+ *
+ * Buffer values are serialized as their lengths, residues, and
+ * moduli, as unsigned integers.
+ */
static int tobuf_buffer(buf *b, const union tvec_regval *rv,
const struct tvec_regdef *rd)
- { return (unsigned_to_buf(b, rv->bytes.sz)); }
+{
+ return (unsigned_to_buf(b, rv->buf.sz) ||
+ unsigned_to_buf(b, rv->buf.a) ||
+ unsigned_to_buf(b, rv->buf.m));
+}
+
+/* --- @frombuf_buffer@ --- *
+ *
+ * Arguments: @buf *b@ = buffer
+ * @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ *
+ * Returns: Zero on success, %$-1$% on failure.
+ *
+ * Use: Deserialize a register value from a buffer.
+ *
+ * Buffer values are serialized as just their lengths, as
+ * unsigned integers. The buffer is allocated on
+ * deserialization and filled with a distinctive pattern.
+ */
static int frombuf_buffer(buf *b, union tvec_regval *rv,
const struct tvec_regdef *rd)
{
- unsigned long u;
+ unsigned long sz, a, m;
- if (unsigned_from_buf(b, &u)) return (-1);
- if (u > (size_t)-1) return (-1);
- tvec_allocbytes(rv, u); memset(rv->bytes.p, '!', u);
+ if (unsigned_from_buf(b, &sz)) return (-1);
+ if (unsigned_from_buf(b, &a)) return (-1);
+ if (unsigned_from_buf(b, &m)) return (-1);
+ if (sz > (size_t)-1 || a > (size_t)-1 || m > (size_t)-1)
+ { buf_break(b); return (-1); }
+ rv->buf.sz = sz; rv->buf.a = a; rv->buf.m = m;
return (0);
}
-static const char units[] = "kMGTPEZY";
+/* --- @parse_buffer@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @struct tvec_state *tv@ = test-vector state
+ *
+ * Returns: Zero on success, %$-1$% on error.
+ *
+ * Use: Parse a register value from an input file.
+ *
+ * The input format for a buffer value consists of an unsigned
+ * integer followed by an optional unit specifier consisting of
+ * an SI unit prefix and (optionally) the letter `B'. Unit
+ * prefixes denote %%\emph{binary}%% multipliers, not decimal.
+ *
+ * The buffer is allocated and filled with a distinctive
+ * pattern.
+ */
static int parse_buffer(union tvec_regval *rv,
const struct tvec_regdef *rd,
struct tvec_state *tv)
{
- dstr d = DSTR_INIT;
- const char *q, *unit;
- size_t pos;
- unsigned long u, t;
- int rc;
- unsigned f = 0;
-#define f_range 1u
+ size_t sz, a = 0, m = 0;
+ int ch, rc;
- if (tvec_readword(tv, &d, ";", "buffer length")) { rc = -1; goto end; }
- if (parse_unsigned_integer(&u, &q, d.buf)) goto bad;
- if (!*q) {
- tvec_skipspc(tv); pos = d.len;
- if (!tvec_readword(tv, &d, ";", 0)) pos++;
- q = d.buf + pos;
- }
+ if (parse_size(tv, &sz, "@;", "buffer length")) { rc = -1; goto end; }
+ if (check_string_length(sz, rd->arg.p, tv)) { rc = -1; goto end; }
- if (u > (size_t)-1) goto rangerr;
- for (t = u, unit = units; *unit; unit++) {
- if (t > (size_t)-1/1024) f |= f_range;
- else t *= 1024;
- if (*q == *unit) {
- if (f&f_range) goto rangerr;
- u = t; q++; break;
- }
+ tvec_skipspc(tv);
+ ch = getc(tv->fp);
+ if (ch == ';' || ch == '\n') { ungetc(ch, tv->fp); goto done; }
+ else if (ch != '@') { rc = tvec_syntax(tv, ch, "`@'"); goto end; }
+
+ if (parse_size(tv, &m, "+;", "alignment quantum")) { rc = -1; goto end; }
+ if (m == 1) m = 0;
+
+ tvec_skipspc(tv);
+ ch = getc(tv->fp);
+ if (ch == ';' || ch == '\n') { ungetc(ch, tv->fp); goto done; }
+ else if (ch != '+') { rc = tvec_syntax(tv, ch, "`+'"); goto end; }
+
+ if (parse_size(tv, &a, ";", "alignment offset")) { rc = -1; goto end; }
+ if (a >= m) {
+ rc = tvec_error(tv, "alignment offset %lu >= quantum %lu",
+ (unsigned long)a, (unsigned long)m);
+ goto end;
}
- if (*q == 'B') q++;
- if (*q) goto bad;
- if (check_string_length(u, rd->arg.p, tv)) { rc = -1; goto end; }
+done:
if (tvec_flushtoeol(tv, 0)) { rc = -1; goto end; }
- tvec_allocbytes(rv, u); memset(rv->bytes.p, '?', u);
+ rv->buf.sz = sz; rv->buf.a = a; rv->buf.m = m;
rc = 0;
end:
- DDESTROY(&d); return (rc);
-
-bad:
- tvec_error(tv, "invalid buffer length `%s'", d.buf);
- rc = -1; goto end;
-
-rangerr:
- tvec_error(tv, "buffer length `%s' out of range", d.buf);
- rc = -1; goto end;
-
-#undef f_range
+ return (rc);
}
+/* --- @dump_buffer@ --- *
+ *
+ * Arguments: @const union tvec_regval *rv@ = register value
+ * @const struct tvec_regdef *rd@ = register definition
+ * @unsigned style@ = output style (@TVSF_...@)
+ * @const struct gprintf_ops *gops@, @void *gp@ = format output
+ *
+ * Returns: ---
+ *
+ * Use: Dump a register value to the format output.
+ *
+ * Buffer values are dumped as their size with an appropriate
+ * unit specifier. A unit prefix is only used if the size is an
+ * exact multiple of the relevant power of two.
+ */
+
static void dump_buffer(const union tvec_regval *rv,
const struct tvec_regdef *rd,
unsigned style,
const struct gprintf_ops *gops, void *go)
{
- const char *unit;
- unsigned long u = rv->bytes.sz;
-
- if (!u || u%1024)
- gprintf(gops, go, "%lu B", u);
- else {
- for (unit = units, u /= 1024; !(u%1024) && unit[1]; u /= 1024, unit++);
- gprintf(gops, go, "%lu %cB", u, *unit);
+ format_size(gops, go, rv->buf.sz, style);
+ if (rv->buf.m) {
+ gprintf(gops, go, style&TVSF_COMPACT ? "@" : " @ ");
+ format_size(gops, go, rv->buf.m, style);
+ if (rv->buf.a) {
+ gprintf(gops, go, style&TVSF_COMPACT ? "+" : " + ");
+ format_size(gops, go, rv->buf.a, style);
+ }
+ }
+ if (!(style&TVSF_COMPACT)) {
+ gprintf(gops, go, " ; = %lu", (unsigned long)rv->buf.sz);
+ if (rv->buf.m) {
+ gprintf(gops, go, " @ %lu", (unsigned long)rv->buf.m);
+ if (rv->buf.a) gprintf(gops, go, " + %lu", (unsigned long)rv->buf.a);
+ }
+ gprintf(gops, go, " = "); format_unsigned_hex(gops, go, rv->buf.sz);
+ if (rv->buf.m) {
+ gprintf(gops, go, " @ "); format_unsigned_hex(gops, go, rv->buf.m);
+ if (rv->buf.a) {
+ gprintf(gops, go, " + ");
+ format_unsigned_hex(gops, go, rv->buf.a);
+ }
+ }
}
}
+/* Buffer type definition. */
const struct tvec_regty tvty_buffer = {
- init_bytes, release_bytes, eq_buffer,
+ init_buffer, release_buffer, eq_buffer,
tobuf_buffer, frombuf_buffer,
parse_buffer, dump_buffer
};
+/* --- @tvec_initbuffer@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ * @const union tvec_regval *ref@ = source buffer
+ * @size_t sz@ = size to allocate
+ *
+ * Returns: ---
+ *
+ * Use: Initialize the alignment parameters in @rv@ to match @ref@,
+ * and the size to @sz@.
+ */
+
+void tvec_initbuffer(union tvec_regval *rv,
+ const union tvec_regval *ref, size_t sz)
+ { rv->buf.sz = sz; rv->buf.a = ref->buf.a; rv->buf.m = ref->buf.m; }
+
+/* --- @tvec_allocbuffer@ --- *
+ *
+ * Arguments: @union tvec_regval *rv@ = register value
+ *
+ * Returns: ---
+ *
+ * Use: Allocate @sz@ bytes to the buffer and fill the space with a
+ * distinctive pattern.
+ */
+
+void tvec_allocbuffer(union tvec_regval *rv)
+{
+ unsigned char *p; size_t n;
+
+ if (rv->buf.p) xfree(rv->buf.p - rv->buf.off);
+
+ if (rv->buf.m < 2) {
+ rv->buf.p = xmalloc(rv->buf.sz); rv->buf.off = 0;
+ } else {
+ p = xmalloc(rv->buf.sz + rv->buf.m - 1);
+ n = (size_t)p%rv->buf.m;
+ rv->buf.off = (rv->buf.a - n + rv->buf.m)%rv->buf.m;
+ rv->buf.p = p + rv->buf.off;
+ }
+ memset(rv->buf.p, '?', rv->buf.sz);
+}
+
/*----- That's all, folks -------------------------------------------------*/
~mdw / mLib / blobdiff