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akbasic/src/value.c
Andrew Kesterson f8c15c2f2c Port the BASIC interpreter from Go to C 
Reproduces deps/basicinterpret in C, in the idiom of the ak* libraries. All 41
.bas files in the reference's corpus produce byte-identical stdout, including
the trailing double newline on an error line -- that comes from basicError
building a string ending in \n and handing it to Println, and
array_outofbounds.txt encodes it.

The corpus is driven in place from the submodule as 41 individual CTest cases
rather than copied, so it cannot drift from upstream. Eighteen unit tests cover
what the corpus cannot reach.

Three structural changes carry most of the work. Go's three reflection lookups
(Command*, Function*, ParseCommand*) become one sorted dispatch table in
src/verbs.c searched with bsearch; adding a verb is a row and two functions. The
five Go maps become one fixed open-addressed table over aksl_strhash_djb2. And
run(), which owned the process until MODE_QUIT, splits into step() plus a
bounded run() -- goal 3 requires a host game to be able to bound execution, and
nothing in the library now terminates the process or touches SDL.

Output goes through an akbasic_TextSink vtable. src/sink_stdio.c is what makes
the corpus runnable with no SDL present; the akgl-backed sink is still to come
and is blocked on libakgl having no text-measurement call.

src/convert.c exists because libakstdlib's aksl_ato* family cannot report a
conversion failure (its TODO.md 2.1.5). The reference checks strconv's error at
four sites and turns it into a BASIC error; routing those through aksl_atoi
would have turned four diagnosable errors into wrong answers, with VAL("garbage")
quietly returning 0. TODO.md 1.9 records which libakstdlib calls are cleared for
use here and which are not.

Reference defects are reproduced, not fixed: the golden files encode the observed
behaviour and a silent correction is a behaviour change. TODO.md section 6 lists
sixteen, and tests/known_reference_defects.c asserts the *correct* contract for
six of them under AKBASIC_KNOWN_FAILING_TESTS, so a fix shows up as
"unexpectedly passed". Five of the sixteen were found by this port and are new:
subtraction stops after one operator so 1-2-3 computes 1-2 and abandons the rest
of the line (a wrong answer, not a refused one); a unary-minus argument inflates
a function's arity so ABS(-9) is rejected; a comparison operator in a line's
final column is dropped; hex literals never survive the scanner; and the
"Reserved word in variable name" check is dead code.

Where the reference reaches undefined behaviour by a route that is defined in Go
-- an out-of-range shift, a negative string multiplier, integer division by zero
-- this raises instead of inheriting the UB. No golden case exercises any of
them.

The top-level CMakeLists shadows add_test, set_tests_properties and
add_custom_target around all three add_subdirectory calls. Without it libakerror's
tests land in our suite as Not Run, and its un-namespaced `coverage` target stops
a coverage build from configuring at all. Test targets are akbasic_test_<name>:
bare test_<name> collides with libakstdlib's, which is what broke libakgl's
configure in c2b16d3.

ctest 59/59; ASan+UBSan 59/59; 92.3% line and 96.9% function coverage; no
warnings under -Wall -Wextra. Branch coverage is not a target, for the reason
libakstdlib and libakgl both record: the akerror macros expand into large branch
trees at every call site.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-30 23:53:56 -04:00

518 lines
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/**
* @file value.c
* @brief Implements the BASIC value type and its operators.
*
* A faithful port of basicvalue.go. Where the reference does something
* arithmetically odd -- adding both of the right operand's numeric fields, for
* instance -- this reproduces it, because the golden corpus encodes the observed
* behaviour and a "fix" here is a silent behaviour change. Each one is catalogued
* in TODO.md section 12.
*/
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include <akerror.h>
#include <akbasic/error.h>
#include <akbasic/value.h>
/*
* The reference writes `rval.intval + int64(rval.floatval)` on every integer
* operation and the mirror image on every float one. It works only because the
* unused field of a typed value is always zero. Named so the intent -- "whatever
* numeric payload the right operand is carrying" -- is legible, and so there is
* one place to change when TODO.md section 12 item 5 is fixed.
*/
static int64_t rval_as_int(akbasic_Value *rval)
{
return rval->intval + (int64_t)rval->floatval;
}
static double rval_as_float(akbasic_Value *rval)
{
return rval->floatval + (double)rval->intval;
}
/* Copy a string into a value's inline buffer. Truncation is an error. */
static akerr_ErrorContext *set_string(akbasic_Value *dest, const char *src)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (strlen(src) < AKBASIC_MAX_STRING_LENGTH),
AKBASIC_ERR_VALUE,
"String result of %zu characters exceeds the %d character limit",
strlen(src), AKBASIC_MAX_STRING_LENGTH - 1);
strncpy(dest->stringval, src, AKBASIC_MAX_STRING_LENGTH - 1);
dest->stringval[AKBASIC_MAX_STRING_LENGTH - 1] = '\0';
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_valuepool_init(akbasic_ValuePool *obj)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (obj != NULL), AKERR_NULLPOINTER, "NULL pool in init");
memset(obj, 0, sizeof(*obj));
obj->next = 0;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_valuepool_take(akbasic_ValuePool *obj, int count, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
int i = 0;
FAIL_ZERO_RETURN(errctx, (obj != NULL), AKERR_NULLPOINTER, "NULL pool in take");
FAIL_ZERO_RETURN(errctx, (dest != NULL), AKERR_NULLPOINTER, "NULL destination in take");
FAIL_ZERO_RETURN(errctx, (count > 0), AKBASIC_ERR_BOUNDS,
"Array element count %d must be positive", count);
FAIL_ZERO_RETURN(errctx, (count <= AKBASIC_MAX_ARRAY_VALUES - obj->next),
AKBASIC_ERR_BOUNDS,
"Array of %d elements does not fit in the %d remaining value slots",
count, AKBASIC_MAX_ARRAY_VALUES - obj->next);
*dest = &obj->values[obj->next];
for ( i = 0; i < count; i++ ) {
PASS(errctx, akbasic_value_zero(&obj->values[obj->next + i]));
}
obj->next += count;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_init(akbasic_Value *obj)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (obj != NULL), AKERR_NULLPOINTER, "NULL value in init");
/*
* BasicValue.init() is empty in the reference; the zeroing happens in
* zero(). Keeping both means the call sites port one-for-one.
*/
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_zero(akbasic_Value *obj)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (obj != NULL), AKERR_NULLPOINTER, "NULL value in zero");
obj->valuetype = AKBASIC_TYPE_UNDEFINED;
obj->stringval[0] = '\0';
obj->mutable_ = false;
obj->intval = 0;
obj->floatval = 0.0;
obj->boolvalue = AKBASIC_FALSE;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_clone(akbasic_Value *self, akbasic_Value *dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL source in clone");
FAIL_ZERO_RETURN(errctx, (dest != NULL), AKERR_NULLPOINTER, "NULL destination in clone");
if ( self == dest ) {
SUCCEED_RETURN(errctx);
}
dest->valuetype = self->valuetype;
memcpy(dest->stringval, self->stringval, sizeof(dest->stringval));
dest->intval = self->intval;
dest->floatval = self->floatval;
dest->boolvalue = self->boolvalue;
/* mutable_ is deliberately not copied: the reference's clone() does not. */
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_to_string(akbasic_Value *self, char *dest, size_t len)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in to_string");
FAIL_ZERO_RETURN(errctx, (dest != NULL), AKERR_NULLPOINTER, "NULL destination in to_string");
FAIL_ZERO_RETURN(errctx, (len > 0), AKBASIC_ERR_BOUNDS, "Zero-length destination in to_string");
switch ( self->valuetype ) {
case AKBASIC_TYPE_STRING:
snprintf(dest, len, "%s", self->stringval);
break;
case AKBASIC_TYPE_INTEGER:
snprintf(dest, len, "%" PRId64, self->intval);
break;
case AKBASIC_TYPE_FLOAT:
snprintf(dest, len, "%f", self->floatval);
break;
case AKBASIC_TYPE_BOOLEAN:
/* Go's %t, which is "true"/"false" and not the numeric -1/0. */
snprintf(dest, len, "%s", (self->boolvalue == AKBASIC_TRUE ? "true" : "false"));
break;
default:
snprintf(dest, len, "(UNDEFINED STRING REPRESENTATION FOR %d)", (int)self->valuetype);
break;
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_set_bool(akbasic_Value *obj, bool result)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (obj != NULL), AKERR_NULLPOINTER, "NULL value in set_bool");
obj->valuetype = AKBASIC_TYPE_BOOLEAN;
obj->boolvalue = (result ? AKBASIC_TRUE : AKBASIC_FALSE);
SUCCEED_RETURN(errctx);
}
bool akbasic_value_is_true(akbasic_Value *self)
{
if ( self == NULL || self->valuetype != AKBASIC_TYPE_BOOLEAN ) {
return false;
}
return (self->boolvalue == AKBASIC_TRUE);
}
/* Shared prologue for the unary operators: validate, clone into scratch. */
static akerr_ErrorContext *unary_prologue(akbasic_Value *self, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in unary operation");
FAIL_ZERO_RETURN(errctx, (scratch != NULL), AKERR_NULLPOINTER, "NULL scratch in unary operation");
FAIL_ZERO_RETURN(errctx, (dest != NULL), AKERR_NULLPOINTER, "NULL destination in unary operation");
PASS(errctx, akbasic_value_clone(self, scratch));
*dest = scratch;
SUCCEED_RETURN(errctx);
}
/* Shared prologue for the binary operators: validate, clone into scratch. */
static akerr_ErrorContext *binary_prologue(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in binary operation");
FAIL_ZERO_RETURN(errctx, (rval != NULL), AKERR_NULLPOINTER, "nil rval");
FAIL_ZERO_RETURN(errctx, (scratch != NULL), AKERR_NULLPOINTER, "NULL scratch in binary operation");
FAIL_ZERO_RETURN(errctx, (dest != NULL), AKERR_NULLPOINTER, "NULL destination in binary operation");
PASS(errctx, akbasic_value_clone(self, scratch));
*dest = scratch;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_invert(akbasic_Value *self, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in invert");
FAIL_NONZERO_RETURN(errctx, (self->valuetype == AKBASIC_TYPE_STRING),
AKBASIC_ERR_TYPE, "Cannot invert a string");
PASS(errctx, unary_prologue(self, scratch, dest));
(*dest)->intval = -(self->intval);
(*dest)->floatval = -(self->floatval);
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_bitwise_not(akbasic_Value *self, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in bitwise not");
FAIL_ZERO_RETURN(errctx, (self->valuetype == AKBASIC_TYPE_INTEGER),
AKBASIC_ERR_TYPE, "Cannot only perform bitwise operations on integers");
PASS(errctx, unary_prologue(self, scratch, dest));
(*dest)->intval = ~(self->intval);
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_shift_left(akbasic_Value *self, int64_t bits, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in shift left");
FAIL_ZERO_RETURN(errctx, (self->valuetype == AKBASIC_TYPE_INTEGER),
AKBASIC_ERR_TYPE, "Only integer datatypes can be bit-shifted");
/*
* Go's << on a negative or >=64 count is defined; C's is undefined. Refuse
* rather than inherit the UB -- no golden case exercises it, so this cannot
* change observed behaviour.
*/
FAIL_ZERO_RETURN(errctx, (bits >= 0 && bits < 64), AKBASIC_ERR_VALUE,
"Shift count %" PRId64 " is out of range 0..63", bits);
PASS(errctx, unary_prologue(self, scratch, dest));
(*dest)->intval = (int64_t)((uint64_t)(*dest)->intval << bits);
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_shift_right(akbasic_Value *self, int64_t bits, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in shift right");
FAIL_ZERO_RETURN(errctx, (self->valuetype == AKBASIC_TYPE_INTEGER),
AKBASIC_ERR_TYPE, "Only integer datatypes can be bit-shifted");
FAIL_ZERO_RETURN(errctx, (bits >= 0 && bits < 64), AKBASIC_ERR_VALUE,
"Shift count %" PRId64 " is out of range 0..63", bits);
PASS(errctx, unary_prologue(self, scratch, dest));
(*dest)->intval = (*dest)->intval >> bits;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_bitwise_and(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in bitwise and");
FAIL_ZERO_RETURN(errctx, (rval != NULL), AKERR_NULLPOINTER, "nil rval");
FAIL_ZERO_RETURN(errctx, (self->valuetype == AKBASIC_TYPE_INTEGER),
AKBASIC_ERR_TYPE, "Cannot perform bitwise operations on string or float");
PASS(errctx, binary_prologue(self, rval, scratch, dest));
(*dest)->intval = self->intval & rval->intval;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_bitwise_or(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in bitwise or");
FAIL_ZERO_RETURN(errctx, (rval != NULL), AKERR_NULLPOINTER, "nil rval");
FAIL_ZERO_RETURN(errctx, (self->valuetype == AKBASIC_TYPE_INTEGER),
AKBASIC_ERR_TYPE, "Can only perform bitwise operations on integers");
PASS(errctx, binary_prologue(self, rval, scratch, dest));
(*dest)->intval = self->intval | rval->intval;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_bitwise_xor(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in bitwise xor");
FAIL_ZERO_RETURN(errctx, (rval != NULL), AKERR_NULLPOINTER, "nil rval");
FAIL_ZERO_RETURN(errctx,
(self->valuetype == AKBASIC_TYPE_INTEGER && rval->valuetype == AKBASIC_TYPE_INTEGER),
AKBASIC_ERR_TYPE, "Can only perform bitwise operations on integers");
PASS(errctx, binary_prologue(self, rval, scratch, dest));
(*dest)->intval = self->intval ^ rval->intval;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_math_plus(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
akbasic_Value *out = NULL;
char buf[AKBASIC_MAX_STRING_LENGTH * 2];
FAIL_ZERO_RETURN(errctx, (self != NULL), AKERR_NULLPOINTER, "NULL value in math plus");
FAIL_ZERO_RETURN(errctx, (rval != NULL), AKERR_NULLPOINTER, "nil rval");
FAIL_ZERO_RETURN(errctx, (scratch != NULL), AKERR_NULLPOINTER, "NULL scratch in math plus");
FAIL_ZERO_RETURN(errctx, (dest != NULL), AKERR_NULLPOINTER, "NULL destination in math plus");
/*
* The asymmetry with every other operator is deliberate and load-bearing:
* mathPlus mutates self in place when self is mutable, and CommandNEXT's
* loop increment relies on that to advance the loop variable. TODO.md
* section 12 item 4.
*/
if ( !self->mutable_ ) {
PASS(errctx, akbasic_value_clone(self, scratch));
out = scratch;
} else {
out = self;
}
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
out->intval = self->intval + rval_as_int(rval);
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
out->floatval = self->floatval + rval_as_float(rval);
} else if ( self->valuetype == AKBASIC_TYPE_STRING && rval->valuetype == AKBASIC_TYPE_STRING ) {
snprintf(buf, sizeof(buf), "%s%s", self->stringval, rval->stringval);
PASS(errctx, set_string(out, buf));
} else if ( self->valuetype == AKBASIC_TYPE_STRING && rval->valuetype == AKBASIC_TYPE_INTEGER ) {
snprintf(buf, sizeof(buf), "%s%" PRId64, self->stringval, rval->intval);
PASS(errctx, set_string(out, buf));
} else if ( self->valuetype == AKBASIC_TYPE_STRING && rval->valuetype == AKBASIC_TYPE_FLOAT ) {
snprintf(buf, sizeof(buf), "%s%f", self->stringval, rval->floatval);
PASS(errctx, set_string(out, buf));
} else {
FAIL_RETURN(errctx, AKBASIC_ERR_TYPE, "Invalid arithmetic operation");
}
*dest = out;
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_math_minus(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
FAIL_NONZERO_RETURN(errctx,
(self->valuetype == AKBASIC_TYPE_STRING || rval->valuetype == AKBASIC_TYPE_STRING),
AKBASIC_ERR_TYPE, "Cannot perform subtraction on strings");
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
(*dest)->intval = self->intval - rval_as_int(rval);
} else {
(*dest)->floatval = self->floatval - rval_as_float(rval);
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_math_divide(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
FAIL_NONZERO_RETURN(errctx,
(self->valuetype == AKBASIC_TYPE_STRING || rval->valuetype == AKBASIC_TYPE_STRING),
AKBASIC_ERR_TYPE, "Cannot perform division on strings");
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
/*
* Integer division by zero is UB in C where Go panics. Neither is
* acceptable in a library, and no golden case divides by zero, so raise.
*/
FAIL_NONZERO_RETURN(errctx, (rval_as_int(rval) == 0), AKBASIC_ERR_VALUE,
"DIVISION BY ZERO");
(*dest)->intval = self->intval / rval_as_int(rval);
} else {
(*dest)->floatval = self->floatval / rval_as_float(rval);
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_math_multiply(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
char buf[AKBASIC_MAX_STRING_LENGTH];
int64_t i = 0;
size_t srclen = 0;
size_t offset = 0;
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_STRING ) {
FAIL_NONZERO_RETURN(errctx, (rval->valuetype == AKBASIC_TYPE_STRING),
AKBASIC_ERR_TYPE, "String multiplication requires an integer multiple");
/*
* Go's strings.Repeat panics on a negative count. Refusing is strictly
* better than either panicking or reading off the end of the buffer, and
* no golden case does it.
*/
FAIL_NONZERO_RETURN(errctx, (rval->intval < 0), AKBASIC_ERR_VALUE,
"String multiplier %" PRId64 " must not be negative", rval->intval);
srclen = strlen((*dest)->stringval);
FAIL_NONZERO_RETURN(errctx,
(srclen != 0 && (uint64_t)rval->intval > (AKBASIC_MAX_STRING_LENGTH - 1) / srclen),
AKBASIC_ERR_VALUE,
"Repeated string of %zu x %" PRId64 " characters exceeds the %d character limit",
srclen, rval->intval, AKBASIC_MAX_STRING_LENGTH - 1);
for ( i = 0; i < rval->intval; i++ ) {
memcpy(buf + offset, (*dest)->stringval, srclen);
offset += srclen;
}
buf[offset] = '\0';
PASS(errctx, set_string(*dest, buf));
}
/*
* Not an `else if`. The reference falls through to the numeric branches even
* for a string, where self->floatval is 0 and the write is a harmless no-op.
* Kept so the port is provably faithful.
*/
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
(*dest)->intval = self->intval * rval_as_int(rval);
} else {
(*dest)->floatval = self->floatval * rval_as_float(rval);
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_less_than(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->intval < rval_as_int(rval)));
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->floatval < rval_as_float(rval)));
} else {
PASS(errctx, akbasic_value_set_bool(*dest, strcmp(self->stringval, rval->stringval) < 0));
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_less_than_equal(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->intval <= rval_as_int(rval)));
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->floatval <= rval_as_float(rval)));
} else {
PASS(errctx, akbasic_value_set_bool(*dest, strcmp(self->stringval, rval->stringval) <= 0));
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_greater_than(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->intval > rval_as_int(rval)));
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->floatval > rval_as_float(rval)));
} else {
PASS(errctx, akbasic_value_set_bool(*dest, strcmp(self->stringval, rval->stringval) > 0));
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_greater_than_equal(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->intval >= rval_as_int(rval)));
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->floatval >= rval_as_float(rval)));
} else {
PASS(errctx, akbasic_value_set_bool(*dest, strcmp(self->stringval, rval->stringval) >= 0));
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_is_equal(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->intval == rval_as_int(rval)));
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->floatval == rval_as_float(rval)));
} else {
PASS(errctx, akbasic_value_set_bool(*dest, strcmp(self->stringval, rval->stringval) == 0));
}
SUCCEED_RETURN(errctx);
}
akerr_ErrorContext *akbasic_value_is_not_equal(akbasic_Value *self, akbasic_Value *rval, akbasic_Value *scratch, akbasic_Value **dest)
{
PREPARE_ERROR(errctx);
PASS(errctx, binary_prologue(self, rval, scratch, dest));
if ( self->valuetype == AKBASIC_TYPE_INTEGER ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->intval != rval_as_int(rval)));
} else if ( self->valuetype == AKBASIC_TYPE_FLOAT ) {
PASS(errctx, akbasic_value_set_bool(*dest, self->floatval != rval_as_float(rval)));
} else {
PASS(errctx, akbasic_value_set_bool(*dest, strcmp(self->stringval, rval->stringval) != 0));
}
SUCCEED_RETURN(errctx);
}
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