Added a sample homework

1 files changed, 0 insertions, 77 deletions

diff --git a/demo/flex/js2html.flex b/demo/flex/js2html.flex
deleted file mode 100644
index 4dfe28a..0000000
--- a/demo/flex/js2html.flex
+++ /dev/null
@@ -1,77 +0,0 @@
-/* scanner for a toy JavaScript-like language */
-
-%{
-#define YY_NO_UNISTD_H
-%}
-
-DIGIT    [0-9]
-ID       [a-z_$][a-z0-9_$]*
-STRQ     '([^\']|(\\\'))*'
-STRDQ    "([^\"]|(\\\"))*"
-
-%%
-
-{DIGIT}+    {
-            printf("<span class=\"number\">%s</span>", yytext);
-            }
-
-{DIGIT}+"."{DIGIT}*        {
-            printf("<span class=\"number\">%s</span>", yytext);
-            }
-
-if|else|for|while|do|break|switch|case|function|return|new|delete|try|throw|catch|class|public|private {
-    printf("<span class=\"keyword\">%s</span>", yytext);
-}
-
-{ID}    printf("<span class=\"identifier\">%s</span>", yytext);
-{STRQ}|{STRDQ}        printf("<span class=\"string\">%s</span>", yytext);
-
-"."|"+"|"-"|"*"|"/"|"="|"!"|">"|"<"|"!=="|"==="|">="|"<="|"++"|"--"|"=>"   printf("<span class=\"operator\">%s</span>", yytext);
-
-[;(){}:? \t\n]+          printf("%s", yytext); /* echo the rest */
-
-.           printf( "Unrecognized character: %s\n", yytext );
-
-%%
-
-int yywrap()
-{
-    return 1;
-}
-
-
-int main(int argc, const char* argv[])
-{
-    ++argv, --argc;  /* skip over program name */
-    if ( argc > 0 )
-            yyin = fopen( argv[0], "r" );
-    else
-            yyin = stdin;
-
-    puts(
-        "<!doctype>"
-        "<html>"
-        "<head>"
-        "    <title>hello.js</title>"
-        "    <style>"
-        "        .keyword {"
-        "            color: red;"
-        "        }"
-        "        .number {"
-        "            color: blue;"
-        "        }"
-        "        .string {"
-        "            color: green;"
-        "        }"
-        "        .operator {"
-        "            font-style: bold;"
-        "        }"
-        "    </style>"
-        "</head>"
-        "<body>"
-        "    <pre class=\"code\">"
-        );
-    yylex();
-    puts("</pre></body></html>");
-    return 0;
-}