Parsing 处理转义序列的BNF_Parsing_Escaping_Grammar_Bnf

Parsing 处理转义序列的BNF

parsing

Parsing 处理转义序列的BNF,parsing,escaping,grammar,bnf,Parsing,Escaping,Grammar,Bnf,我使用此BNF解析我的脚本： {identset} = {ASCII} - {"\{\}}; //<--all ascii charset except '\"' '{' and '}' {strset} = {ASCII} - {"}; ident = {identset}*; str = {strset}*; node ::= ident "{" nodes "}" | //<--entry point "\

我使用此BNF解析我的脚本：

{identset} = {ASCII} - {"\{\}};     //<--all ascii charset except '\"' '{' and '}'
{strset}   = {ASCII} - {"};
ident      = {identset}*;
str        = {strset}*;
node     ::= ident "{" nodes "}" |  //<--entry point
             "\"" str "\"" | 
             ident;
nodes    ::= node nodes |
             node;

我的问题是，如何处理字符串中的转义序列literal:

"some text of \"quotation\" should escape"

将str定义为：

str =  ( strset strescape ) *;

与

str =  ( strset strescape ) *;

strescape = { \\ } {\" } ;