Keywords and identifiers used in expressions.
Parsers of ErgoScript expressions.
Parsers of literal expressions.
Exception thrown during the parsing phase of the compiler.
Basic lexical parsers for ErgoScript.
Identifiers and keywords
Most keywords don't just require the correct characters to match, they have to ensure that subsequent characters *don't* match in order for it to be a keyword.
Most keywords don't just require the correct characters to match, they have to ensure that subsequent characters *don't* match in order for it to be a keyword. This enforces that rule for key-words (W) and key-operators (O) which have different non-match criteria.