I\'m using GNU Bison 2.4.2 to write a grammar for a new language I\'m working on and I have a question.
How can it be shown that no LL(1) grammar can be ambiguous?开发者_StackOverflow中文版 I know what is ambiguous grammar but could not prove the above theorem/lemma.Here\'s my first draft at a proof.It
The following grammar开发者_开发技巧 has left recursion E= E+T|T T= T*F|F F= a|b|c How to remove it? Is there any general procedure for it?Yes, there is a general procedure, see e.g. wikipedia.
How can I convert some regular language to its equivalent Context Free Grammar? Is it necessary to construct the DFA corresponding to that regular expression or is there some rule for such a conversio
What are a开发者_JS百科nd how to use the \"island grammar\" in antlr3?An island grammar is one that treats most of a language as a blob of text (\"water\") and picks out the part of the langauge of in
Can I construct a token ENDPLUS: \'+\' (options (greedy = false;):.) * \'+\' ; being considered by the lexer only if it is 开发者_开发问答preceded by a token PREwithout including in ENDPLUS?
I have been using the followin开发者_Python百科g win32 console code to try to parse a B Machine Grammar embedded within C++ using Boost Spirit grammar template. I am a relatively new Boost user. The c
I开发者_运维技巧\'m trying to translate a grammar from bison to ANTLR. The grammar itself is pretty simple in bison but I cannot find a simple way for doing this.
In Antlrworks I get this error: [18:21:03] Checking Grammar Grammar.g... [18:21:26] Grammar.java:12: code too large
I\'ve got a BNF and EBNF for a grammar. The BNF is obviously more verbose. I have a fairly good idea as far as using the BNF to build a recursive-descent parser; there are many resources for this. I a
加载中,请稍侯......