"Ellery Newcomer" <ellery-newco...@utulsa.edu> wrote in message news:hbd6q8$1o5...@digitalmars.com... > > For some reason, my professor seems to be skipping LR parsing.
Gold's documentation has a lot of good starting point information: http://www.devincook.com/goldparser/articles/lalr.htm http://www.devincook.com/goldparser/doc/meta-language/index.htm http://www.devincook.com/goldparser/doc/engine-pseudo/index.htm LR's are typically considered a little more powerful than LL (although ANTLR has pushed LLs impressively far), and they work in basically the opposite way. If you have: A --> B1 | B2 B1 --> "foo1" | "foo2" B2 --> "foo3" | "foo4" An LL, as you know, starts at the A and works it way down. But an LR starts by matching one of those "foo"s and then works it's way up by reducing to one of the Bs and then to A.
