shithub: libmujs

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Add warning function to parser. Warn but accept function expressions
as expression statements.

--- a/jslex.h

+++ b/jslex.h

@@ -69,5 +69,6 @@

 int jsP_lex(js_State *J);

 const char *jsP_tokenstring(int token);

 int jsP_error(js_State *J, const char *fmt, ...);

+void jsP_warning(js_State *J, const char *fmt, ...);

 #endif

--- a/jsparse.c

+++ b/jsparse.c

@@ -764,12 +764,13 @@

 	}

 	/* expression statement */

-	if (J->lookahead != TK_FUNCTION) {

-		a = expression(J, 0);

-		semicolon(J);

-		return a;

-	}

+	if (J->lookahead == TK_FUNCTION)

+		jsP_warning(J, "naked function expression");

+	a = expression(J, 0);

+	semicolon(J);

+	return a;

+

 	jsP_error(J, "unexpected token in statement: %s", TOKSTR);

 	return NULL;

 }

@@ -808,6 +809,17 @@

 	a = chunklist(J);

 	expect(J, '}');

 	return a;

+}

+

+void jsP_warning(js_State *J, const char *fmt, ...)

+{

+	va_list ap;

+

+	fprintf(stderr, "%s:%d: warning:", J->filename, J->line);

+	va_start(ap, fmt);

+	vfprintf(stderr, fmt, ap);

+	va_end(ap);

+	fprintf(stderr, "\n");

 }

 int jsP_error(js_State *J, const char *fmt, ...)