Allow parsing `123.foo()` as `(123).foo()`

3 files changed, 8 insertions, 0 deletions

diff --git a/src/parse/numbers.c b/src/parse/numbers.c
index 4e746525..4e7937d9 100644
--- a/src/parse/numbers.c
+++ b/src/parse/numbers.c
@@ -57,6 +57,7 @@ ast_t *parse_num(parse_ctx_t *ctx, const char *pos) {
 
     size_t len = strspn(pos, "0123456789_");
     if (strncmp(pos + len, "..", 2) == 0) return NULL;
+    else if (pos[len] == '.' && is_xid_start_next(pos + len + 1)) return NULL;
     else if (pos[len] == '.') len += 1 + strspn(pos + len + 1, "0123456789");
     else if (pos[len] != 'e' && pos[len] != 'f' && pos[len] != '%') return NULL;
     if (pos[len] == 'e') {
diff --git a/src/parse/utils.c b/src/parse/utils.c
index 03e0ebcd..2df3f1a9 100644
--- a/src/parse/utils.c
+++ b/src/parse/utils.c
@@ -57,6 +57,12 @@ size_t match(const char **pos, const char *target) {
     return len;
 }
 
+bool is_xid_start_next(const char *pos) {
+    ucs4_t point = 0;
+    u8_next(&point, (const uint8_t *)pos);
+    return uc_is_property_xid_start(point);
+}
+
 bool is_xid_continue_next(const char *pos) {
     ucs4_t point = 0;
     u8_next(&point, (const uint8_t *)pos);
diff --git a/src/parse/utils.h b/src/parse/utils.h
index b8fb0756..89b1cc82 100644
--- a/src/parse/utils.h
+++ b/src/parse/utils.h
@@ -22,6 +22,7 @@ bool indent(parse_ctx_t *ctx, const char **pos);
 const char *eol(const char *str);
 PUREFUNC int64_t get_indent(parse_ctx_t *ctx, const char *pos);
 const char *unescape(parse_ctx_t *ctx, const char **out);
+bool is_xid_start_next(const char *pos);
 bool is_xid_continue_next(const char *pos);
 bool newline_with_indentation(const char **out, int64_t target);
 bool match_separator(parse_ctx_t *ctx, const char **pos);