va_end (ap);
}
-static void
+static gboolean
token_stream_prepare (TokenStream *stream)
{
gint brackets = 0;
const gchar *end;
if (stream->this != NULL)
- return;
+ return TRUE;
while (stream->stream != stream->end && g_ascii_isspace (*stream->stream))
stream->stream++;
if (stream->stream == stream->end || *stream->stream == '\0')
{
stream->this = stream->stream;
- return;
+ return FALSE;
}
switch (stream->stream[0])
stream->this = stream->stream;
stream->stream = end;
+
+ return TRUE;
}
static void
token_stream_peek (TokenStream *stream,
gchar first_char)
{
- token_stream_prepare (stream);
+ if (!token_stream_prepare (stream))
+ return FALSE;
return stream->this[0] == first_char;
}
gchar first_char,
gchar second_char)
{
- token_stream_prepare (stream);
+ if (!token_stream_prepare (stream))
+ return FALSE;
return stream->this[0] == first_char &&
stream->this[1] == second_char;
static gboolean
token_stream_is_keyword (TokenStream *stream)
{
- token_stream_prepare (stream);
+ if (!token_stream_prepare (stream))
+ return FALSE;
return g_ascii_isalpha (stream->this[0]) &&
g_ascii_isalpha (stream->this[1]);
static gboolean
token_stream_is_numeric (TokenStream *stream)
{
- token_stream_prepare (stream);
+ if (!token_stream_prepare (stream))
+ return FALSE;
return (g_ascii_isdigit (stream->this[0]) ||
stream->this[0] == '-' ||
{
gint length = strlen (token);
- token_stream_prepare (stream);
+ if (!token_stream_prepare (stream))
+ return FALSE;
if (stream->stream - stream->this == length &&
memcmp (stream->this, token, length) == 0)
{
gchar *result;
- token_stream_prepare (stream);
+ if (!token_stream_prepare (stream))
+ return NULL;
result = g_strndup (stream->this, stream->stream - stream->this);