Here's a tokenizer for your language as you've defined it so far:

my $text = "{{\\escape\\sequences \\more\\sequences{\\yet\\more}\\agai
+n\\some\\more\\sequences Some Data}{\\foo\\bar Some Other Data}}";

printf("%-14s  %s\n", 'Token Type', 'Token Value');
printf("%-14s  %s\n", '='x14,       '='x40);

foreach ($text) {
   m/\G( {        )/gcx && do { printf("%-14s  %s\n", 'curly, opening'
+,  $1);  redo; };
   m/\G( }        )/gcx && do { printf("%-14s  %s\n", 'curly, closing'
+,  $1);  redo; };
   m/\G( \\\w+    )/gcx && do { printf("%-14s  %s\n", 'escape',       
+   $1);  redo; };
   m/\G( [^{}\\]+ )/gcx && do { printf("%-14s  %s\n", 'text',      "\"
+$1\"");  redo; };
}

[download]
and I can forsee adding more to further subdivide the tokens.

By definition, a token is something that can't be further subdivided.

In reply to Re: Basics of parsing (using RTF as a testbed) by ikegami
in thread Basics of parsing (using RTF as a testbed) by Mugatu

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