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Update man page and add early exit to number scanning for parser.

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This commit is contained in:
Calvin Rose 2019-01-16 12:32:33 -05:00
parent d0fc29338c
commit 82cddef5bb
3 changed files with 10 additions and 4 deletions
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6
janet.1
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@ -37,7 +37,11 @@ Shows the version text and exits immediately.
.TP
.BR \-s
Read raw input from stdin, such as from a pipe without printing a prompt.
Read raw input from stdin and forgo prompt history and other readline-like features.
.TP
.BR \-q
Quiet output. Don't prinpt a repl prompt or expression results to stdout.
.TP
.BR \-r

6
src/core/parse.c
View File

@ -293,9 +293,11 @@ static int tokenchar(JanetParser *p, JanetParseState *state, uint8_t c) {
}
/* Token finished */
blen = (int32_t) p->bufcount;
int start_dig = p->buf[0] >= '0' && p->buf[0] <= '9';
int start_num = start_dig || p->buf[0] == '-' || p->buf[0] == '+';
if (p->buf[0] == ':') {
ret = janet_keywordv(p->buf + 1, blen - 1);
} else if (!janet_scan_number(p->buf, blen, &numval)) {
} else if (start_num && !janet_scan_number(p->buf, blen, &numval)) {
ret = janet_wrap_number(numval);
} else if (!check_str_const("nil", p->buf, blen)) {
ret = janet_wrap_nil();
@ -304,7 +306,7 @@ static int tokenchar(JanetParser *p, JanetParseState *state, uint8_t c) {
} else if (!check_str_const("true", p->buf, blen)) {
ret = janet_wrap_true();
} else if (p->buf) {
if (p->buf[0] >= '0' && p->buf[0] <= '9') {
if (start_dig) {
p->error = "symbol literal cannot start with a digit";
return 0;
} else {

2
src/core/peg.c
View File

@ -1024,7 +1024,7 @@ static const JanetReg cfuns[] = {
"(peg/match peg text [,start=0])\n\n"
"Match a Parsing Expression Grammar to a byte string and return an array of captured values. "
"Returns nil if text does not match the language defined by peg. The syntax of PEGs are very "
"similar to those defined by LPeg, and have similar capabilities. Still WIP."
"similar to those defined by LPeg, and have similar capabilities."
},
{NULL, NULL, NULL}
};