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#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
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