; Make this only as complicated as it needs to be, letting it grow
; as we take on more and more of the language
(defun parse (lexed-ast)
+ "PARSE LEXED-AST => AST
+
+ARGUMENTS AND VALUES:
+
+ LEXED-AST: An ambigious ast
+ AST: An unambigious ast that can be transpiled
+
+DESCRIPTION:
+
+ PARSE takes a ambigious LEXED-AST and converts it to an unambigious one.
+
+ The need for a parser between the lexer and the transpiler is because NetLogo
+ needs two passes to turn into something that can be used. This is the only entry
+ point into this module, and should probably remain that way.
+
+ There's also a lot of error checking that the LEXED-AST even makes sense, even
+ though the lexer obviously thought it did.
+
+ Examples are too numerous and varied, but by inserting an output between
+ the lexer and this code, a good idea of what goes on can be gotten."
(cond
((not lexed-ast) nil)
((numberp (car lexed-ast)) (cons (coerce (car lexed-ast) 'double-float) (parse (cdr lexed-ast))))