85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
#include "misc.h"
|
|
#include "mpconfig.h"
|
|
#include "repl.h"
|
|
|
|
#if MICROPY_ENABLE_REPL_HELPERS
|
|
|
|
bool str_startswith_word(const char *str, const char *head) {
|
|
int i;
|
|
for (i = 0; str[i] && head[i]; i++) {
|
|
if (str[i] != head[i]) {
|
|
return false;
|
|
}
|
|
}
|
|
return head[i] == '\0' && (str[i] == '\0' || !unichar_isalpha(str[i]));
|
|
}
|
|
|
|
bool mp_repl_continue_with_input(const char *input) {
|
|
// check for blank input
|
|
if (input[0] == '\0') {
|
|
return false;
|
|
}
|
|
|
|
// check if input starts with a certain keyword
|
|
bool starts_with_compound_keyword =
|
|
input[0] == '@'
|
|
|| str_startswith_word(input, "if")
|
|
|| str_startswith_word(input, "while")
|
|
|| str_startswith_word(input, "for")
|
|
|| str_startswith_word(input, "try")
|
|
|| str_startswith_word(input, "with")
|
|
|| str_startswith_word(input, "def")
|
|
|| str_startswith_word(input, "class")
|
|
;
|
|
|
|
// check for unmatched open bracket or triple quote
|
|
// TODO don't look at triple quotes inside single quotes
|
|
int n_paren = 0;
|
|
int n_brack = 0;
|
|
int n_brace = 0;
|
|
int in_triple_quote = 0;
|
|
const char *i;
|
|
for (i = input; *i; i++) {
|
|
switch (*i) {
|
|
case '(': n_paren += 1; break;
|
|
case ')': n_paren -= 1; break;
|
|
case '[': n_brack += 1; break;
|
|
case ']': n_brack -= 1; break;
|
|
case '{': n_brace += 1; break;
|
|
case '}': n_brace -= 1; break;
|
|
case '\'':
|
|
if (in_triple_quote != '"' && i[1] == '\'' && i[2] == '\'') {
|
|
i += 2;
|
|
in_triple_quote = '\'' - in_triple_quote;
|
|
}
|
|
break;
|
|
case '"':
|
|
if (in_triple_quote != '\'' && i[1] == '"' && i[2] == '"') {
|
|
i += 2;
|
|
in_triple_quote = '"' - in_triple_quote;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// continue if unmatched brackets or quotes
|
|
if (n_paren > 0 || n_brack > 0 || n_brace > 0 || in_triple_quote != 0) {
|
|
return true;
|
|
}
|
|
|
|
// continue if last character was backslash (for line continuation)
|
|
if (i[-1] == '\\') {
|
|
return true;
|
|
}
|
|
|
|
// continue if compound keyword and last line was not empty
|
|
if (starts_with_compound_keyword && i[-1] != '\n') {
|
|
return true;
|
|
}
|
|
|
|
// otherwise, don't continue
|
|
return false;
|
|
}
|
|
|
|
#endif // MICROPY_ENABLE_REPL_HELPERS
|