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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
#include "nvim/eval/typval.h"
#include "nvim/eval/executor.h"
#include "nvim/eval.h"
#include "nvim/message.h"
#include "nvim/vim.h"
#include "nvim/globals.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "eval/executor.c.generated.h"
#endif
static char *e_letwrong = N_("E734: Wrong variable type for %s=");
char *e_listidx = N_("E684: list index out of range: %" PRId64);
/// Hanle tv1 += tv2, -=, *=, /=, %=, .=
///
/// @param[in,out] tv1 First operand, modified typval.
/// @param[in] tv2 Second operand.
/// @param[in] op Used operator.
///
/// @return OK or FAIL.
int eexe_mod_op(typval_T *const tv1, const typval_T *const tv2,
const char *const op)
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_NO_SANITIZE_UNDEFINED
{
// Can't do anything with a Funcref, a Dict or special value on the right.
if (tv2->v_type != VAR_FUNC && tv2->v_type != VAR_DICT
&& tv2->v_type != VAR_BOOL && tv2->v_type != VAR_SPECIAL) {
switch (tv1->v_type) {
case VAR_DICT:
case VAR_FUNC:
case VAR_PARTIAL:
case VAR_BOOL:
case VAR_SPECIAL: {
break;
}
case VAR_LIST: {
if (*op != '+' || tv2->v_type != VAR_LIST) {
break;
}
// List += List
if (tv1->vval.v_list != NULL && tv2->vval.v_list != NULL) {
tv_list_extend(tv1->vval.v_list, tv2->vval.v_list, NULL);
}
return OK;
}
case VAR_NUMBER:
case VAR_STRING: {
if (tv2->v_type == VAR_LIST) {
break;
}
if (vim_strchr((char_u *)"+-*/%", *op) != NULL) {
// nr += nr or nr -= nr, nr *= nr, nr /= nr, nr %= nr
varnumber_T n = tv_get_number(tv1);
if (tv2->v_type == VAR_FLOAT) {
float_T f = (float_T)n;
if (*op == '%') {
break;
}
switch (*op) {
case '+': f += tv2->vval.v_float; break;
case '-': f -= tv2->vval.v_float; break;
case '*': f *= tv2->vval.v_float; break;
case '/': f /= tv2->vval.v_float; break;
}
tv_clear(tv1);
tv1->v_type = VAR_FLOAT;
tv1->vval.v_float = f;
} else {
switch (*op) {
case '+': n += tv_get_number(tv2); break;
case '-': n -= tv_get_number(tv2); break;
case '*': n *= tv_get_number(tv2); break;
case '/': n = num_divide(n, tv_get_number(tv2)); break;
case '%': n = num_modulus(n, tv_get_number(tv2)); break;
}
tv_clear(tv1);
tv1->v_type = VAR_NUMBER;
tv1->vval.v_number = n;
}
} else {
// str .= str
if (tv2->v_type == VAR_FLOAT) {
break;
}
const char *tvs = tv_get_string(tv1);
char numbuf[NUMBUFLEN];
char *const s = (char *)concat_str(
(const char_u *)tvs, (const char_u *)tv_get_string_buf(tv2,
numbuf));
tv_clear(tv1);
tv1->v_type = VAR_STRING;
tv1->vval.v_string = (char_u *)s;
}
return OK;
}
case VAR_FLOAT: {
if (*op == '%' || *op == '.'
|| (tv2->v_type != VAR_FLOAT
&& tv2->v_type != VAR_NUMBER
&& tv2->v_type != VAR_STRING)) {
break;
}
const float_T f = (tv2->v_type == VAR_FLOAT
? tv2->vval.v_float
: (float_T)tv_get_number(tv2));
switch (*op) {
case '+': tv1->vval.v_float += f; break;
case '-': tv1->vval.v_float -= f; break;
case '*': tv1->vval.v_float *= f; break;
case '/': tv1->vval.v_float /= f; break;
}
return OK;
}
case VAR_UNKNOWN: {
abort();
}
}
}
EMSG2(_(e_letwrong), op);
return FAIL;
}
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