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我用ANTLR来创建一个语法,但我得到这个错误错误(211):致命]规则条件具有非LL(*)
error(211): [fatal] rule conditions has non-LL(*) decision due to recursive rule invocations reachable from alts 1,2. Resolve by left-factoring or using syntactic predicates or using backtrack=true option.
我的语法规则:
conditions
: '(' conditions ')'
| condition (C_BINARY_OPERATOR conditions)?
;
condition
: expression C_CONDITIONAL_OPERATOR expression
;
expression
: (term) (('+'|'-') term)*
;
term
: (factor) (('*' | '/') factor)*
;
factor
: C_ID
| C_NUMBERS
| '(' expression ')'
;
// Binary Operators for Logical Calculation
C_BINARY_OPERATOR
: '&&'
| '||'
;
// Conditonal Operators
C_CONDITIONAL_OPERATOR
: '>'
| '<'
| '=='
| '!='
| '=<'
| '=>'
;
我该如何解决这个错误?