Long live Qt 4.5!

1 files changed, 83 insertions, 0 deletions

diff --git a/util/qlalr/examples/dummy-xml/ll/dummy-xml-ll.cpp b/util/qlalr/examples/dummy-xml/ll/dummy-xml-ll.cpp
new file mode 100644
index 0000000000..54f5e0e29f
--- /dev/null
+++ b/util/qlalr/examples/dummy-xml/ll/dummy-xml-ll.cpp
@@ -0,0 +1,83 @@
+
+#include <cstdlib>
+#include <cstdio>
+
+enum Token {
+    EOF_SYMBOL,
+    LEFT_ANGLE,
+    RIGHT_ANGLE,
+    ANY,
+};
+
+static int current_char;
+static int yytoken;
+static bool in_tag = false;
+
+bool parseXmlStream();
+bool parseTagOrWord();
+bool parseTagName();
+
+inline int nextToken()
+{
+    current_char = fgetc(stdin);
+    if (current_char == EOF) {
+        return (yytoken = EOF_SYMBOL);
+    } else if (current_char == '<') {
+        in_tag = true;
+        return (yytoken = LEFT_ANGLE);
+    } else if (in_tag && current_char == '>') {
+        in_tag = false;
+        return (yytoken = RIGHT_ANGLE);
+    }
+    return (yytoken = ANY);
+}
+
+bool parse()
+{
+    nextToken();
+    return parseXmlStream();
+}
+
+bool parseXmlStream()
+{
+    while (parseTagOrWord())
+        ;
+
+    return true;
+}
+
+bool parseTagOrWord()
+{
+    if (yytoken == LEFT_ANGLE) {
+        nextToken();
+        if (! parseTagName())
+            return false;
+        if (yytoken != RIGHT_ANGLE)
+            return false;
+        nextToken();
+
+        fprintf (stderr, "*** found a tag\n");
+
+    } else if (yytoken == ANY) {
+        nextToken();
+    } else {
+        return false;
+    }
+    return true;
+}
+
+bool parseTagName()
+{
+    while (yytoken == ANY)
+        nextToken();
+
+    return true;
+}
+
+int main()
+{
+    if (parse())
+        printf("OK\n");
+    else
+        printf("KO\n");
+}