From dbe3f0b7269fa28ff459586ac25d765395cace16 Mon Sep 17 00:00:00 2001 From: Bruce Hill Date: Tue, 12 Jan 2021 18:41:31 -0800 Subject: Added some comments --- compiler.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'compiler.c') diff --git a/compiler.c b/compiler.c index 0c8444c..1ed2481 100644 --- a/compiler.c +++ b/compiler.c @@ -268,6 +268,8 @@ vm_op_t *bp_simplepattern(file_t *f, const char *str) size_t len = (size_t)(str - start); char *literal = xcalloc(sizeof(char), len+1); memcpy(literal, start, len); + // Note: an unescaped string is guaranteed to be no longer than the + // escaped string, so this is safe to do inplace. len = unescape_string(literal, literal, len); op->op = VM_STRING; @@ -529,6 +531,8 @@ vm_op_t *bp_stringpattern(file_t *f, const char *str) size_t len = (size_t)(str - start); char *literal = xcalloc(sizeof(char), len+1); memcpy(literal, start, len); + // Note: an unescaped string is guaranteed to be no longer than the + // escaped string, so this is safe to do inplace. len = unescape_string(literal, literal, len); strop->len = (ssize_t)len; strop->args.s = literal; -- cgit v1.2.3