I am taking a principals of programming class right now. We are learning about LL(1) grammars. I found the book and lectures to be somewhat unclear and was hoping that someone could refer me to a go
I cannot for the life of me figure out why Alternative is left recursive. It really throws a wrench into my parser.
This wants me to dig deeper in Python sources, but since there are many people on SO that already done that, I would love to hear their pointers.
I am looking at some sample vxml scripts from vxml.org. When i call the script the prompts play, but it doesnt pick up any of my inputs at all. when i speak it responds \"no input\". could i be missin
I did not unders开发者_JS百科tand how a unambiguous grammar is derived from a ambiguous grammar? Consider the example on site: Example. How was the grammar derived is confusing to me.
I\'ve seen someone using \"print\" with \">>\" to write stuffs into a file: In [7]: with open(\'text\', \'w\') as f:
I have an EBNF grammar that has a few rules with this pattern: sequence ::= item item extra* sequence 开发者_如何学JAVAIs the above equivalent to the following?
Grammar: grammar test; WS:( \' \' \'\\t\' \'\\r\' \'\\n\' ) {$channel=HIDDEN;} ; STRING :\'\"\' ( ESC_SEQ | ~(\'\\\\\'|\'\"\') )* \'\"\'
I\'m using an LL(k) EBNF grammar to parse a character stream.I need three different types of tokens: CHARACTERS
I\'ve used antlr and javacc/freecc for a while. Now I need to write a bunch of parsers using antlr grammars but such parsers need to be written in ruby lang.
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