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ngspice
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Introduce variacle 'plainlet' which allow simple copying 

of vectors, even if the right hand side vector name
contain forbidden characters (like math characters).

set plainlet
let newvec = v(/out)
unset plainlet
This commit is contained in:
Holger Vogt 2020-11-06 09:39:39 +01:00
parent a815d279d2
commit 95754d29c1
1 changed files with 22 additions and 8 deletions
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30
src/frontend/com_let.c
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@ -30,6 +30,7 @@ static int get_index_values(char *s, int n_elem_this_dim,
int get_one_index_value(const char *s, int *p_index);
/* let <vec_name> = <expr>
* let <vec_name> = <vec_name_old> if variable 'plainlet' is set
* let <vec_name>[<bracket_expr>] = <expr>
* <bracket_expr> = <index_expr> <sep> <index_expr> <sep> ...
* <index_expr>
@ -125,16 +126,29 @@ void com_let(wordlist *wl)
n_dst_index = vec_dst->v_numdims;
} /* end of case that an indexing bracket '[' was found */
/* Evaluate rhs */
if ((names = ft_getpnames_from_string(
rhs, TRUE)) == (struct pnode *) NULL) {
fprintf(cp_err, "Error: RHS \"%s\" invalid\n", rhs);
goto quit;
/* Just copy a vector. rhs has to be a valid existing vector name
May be used to copy vectors with forbidden characters in their names
into a vector with a valid name.*/
if (cp_getvar("plainlet", CP_BOOL, NULL, 0)) {
vec_src = vec_get(rhs);
if (vec_src == (struct dvec *) NULL) {
fprintf(cp_err, "Error: Can't evaluate \"%s\"\n", rhs);
goto quit;
}
}
if ((vec_src = ft_evaluate(names)) == (struct dvec *) NULL) {
fprintf(cp_err, "Error: Can't evaluate \"%s\"\n", rhs);
goto quit;
/* evaluate the rhs expression as usual, math characters may not be used in vec names,
the expression parser then will complain about a syntax error */
else {
if ((names = ft_getpnames_from_string(
rhs, TRUE)) == (struct pnode*)NULL) {
fprintf(cp_err, "Error: RHS \"%s\" invalid\n", rhs);
goto quit;
}
if ((vec_src = ft_evaluate(names)) == (struct dvec*)NULL) {
fprintf(cp_err, "Error: Can't evaluate \"%s\"\n", rhs);
goto quit;
}
}
if (vec_src->v_link2) {