From 13e9b40517909c65a7f901c0b9166c04c92940d4 Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Mon, 22 Jul 2024 16:01:26 +0300
Subject: [PATCH] Regenerate FFI parser using HEAD version of LLK

---
 ext/ffi/ffi.g        |  5 ++++
 ext/ffi/ffi_parser.c | 67 ++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 70 insertions(+), 2 deletions(-)

diff --git a/ext/ffi/ffi.g b/ext/ffi/ffi.g
index b70e3f12996..e30d86b21c7 100644
--- a/ext/ffi/ffi.g
+++ b/ext/ffi/ffi.g
@@ -64,6 +64,7 @@ php llk.php ffi.g
 /* forward declarations */
 static void yy_error(const char *msg);
 static void yy_error_sym(const char *msg, int sym);
+static void yy_error_str(const char *msg, const char *str);
 
 %}
 
@@ -918,3 +919,7 @@ static void yy_error(const char *msg) {
 static void yy_error_sym(const char *msg, int sym) {
 	zend_ffi_parser_error("%s '%s' at line %d", msg, sym_name[sym], yy_line);
 }
+
+static void yy_error_str(const char *msg, const char *str) {
+	zend_ffi_parser_error("%s '%s' at line %d\n", msg, str, yy_line);
+}
diff --git a/ext/ffi/ffi_parser.c b/ext/ffi/ffi_parser.c
index b956f885ee0..cdd05361b97 100644
--- a/ext/ffi/ffi_parser.c
+++ b/ext/ffi/ffi_parser.c
@@ -34,6 +34,7 @@
 /* forward declarations */
 static void yy_error(const char *msg);
 static void yy_error_sym(const char *msg, int sym);
+static void yy_error_str(const char *msg, const char *str);
 
 #define YYPOS cpos
 #define YYEND cend
@@ -246,6 +247,63 @@ static const char * sym_name[] = {
 #define YY_IN_SET(sym, set, bitset) \
 	(bitset[sym>>3] & (1 << (sym & 0x7)))
 
+size_t yy_escape(char *buf, unsigned char ch)
+{
+	switch (ch) {
+		case '\\': buf[0] = '\\'; buf[1] = '\\'; return 2;
+		case '\'': buf[0] = '\\'; buf[1] = '\''; return 2;
+		case '\"': buf[0] = '\\'; buf[1] = '\"'; return 2;
+		case '\a': buf[0] = '\\'; buf[1] = '\a'; return 2;
+		case '\b': buf[0] = '\\'; buf[1] = '\b'; return 2;
+		case 27:   buf[0] = '\\'; buf[1] = '\e'; return 2;
+		case '\f': buf[0] = '\\'; buf[1] = '\f'; return 2;
+		case '\n': buf[0] = '\\'; buf[1] = '\n'; return 2;
+		case '\r': buf[0] = '\\'; buf[1] = '\r'; return 2;
+		case '\t': buf[0] = '\\'; buf[1] = '\t'; return 2;
+		case '\v': buf[0] = '\\'; buf[1] = '\v'; return 2;
+		case '\?': buf[0] = '\\'; buf[1] = 0x3f; return 2;
+		default: break;
+	}
+	if (ch < 32 || ch >= 127) {
+		buf[0] = '\\';
+		buf[1] = '0' + ((ch >> 6) % 8);
+		buf[2] = '0' + ((ch >> 3) % 8);
+		buf[3] = '0' + (ch % 8);
+		return 4;
+	} else {
+		buf[0] = ch;
+		return 1;
+	}
+}
+
+const char *yy_escape_char(char *buf, unsigned char ch)
+{
+	size_t len = yy_escape(buf, ch);
+	buf[len] = 0;
+	return buf;
+}
+
+const char *yy_escape_string(char *buf, size_t size, const unsigned char *str, size_t n)
+{
+	size_t i = 0;
+	size_t pos = 0;
+	size_t len;
+
+	while (i < n) {
+		if (pos + 8 > size) {
+			buf[pos++] = '.';
+			buf[pos++] = '.';
+			buf[pos++] = '.';
+			break;
+		}
+		len = yy_escape(buf + pos, str[i]);
+		i++;
+		pos += len;
+	}
+	buf[pos] = 0;
+	return buf;
+}
+
 static int skip_EOL(int sym);
 static int skip_WS(int sym);
 static int skip_ONE_LINE_COMMENT(int sym);
@@ -310,6 +368,7 @@ static int synpred_5(int sym);
 static int synpred_6(int sym);
 
 static int get_skip_sym(void) {
+	char buf[64];
 	int ch;
 	int ret;
 	int accept = -1;
@@ -1667,9 +1726,9 @@ _yy_state_error:
 	if (YYPOS >= YYEND) {
 		yy_error("unexpected <EOF>");
 	} else if (YYPOS == yy_text) {
-		yy_error("unexpected character 'escape_char(ch)'");
+		yy_error_str("unexpected character",  yy_escape_char(buf, ch));
 	} else {
-		yy_error("unexpected sequence 'escape_string(yy_text, 1 + YYPOS - yy_text))'");
+		yy_error_str("unexpected sequence", yy_escape_string(buf, sizeof(buf), yy_text, 1 + YYPOS - yy_text));
 	}
 	YYPOS++;
 	goto _yy_state_start;
@@ -3592,3 +3651,7 @@ static void yy_error(const char *msg) {
 static void yy_error_sym(const char *msg, int sym) {
 	zend_ffi_parser_error("%s '%s' at line %d", msg, sym_name[sym], yy_line);
 }
+
+static void yy_error_str(const char *msg, const char *str) {
+	zend_ffi_parser_error("%s '%s' at line %d\n", msg, str, yy_line);
+}