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token_hack.go
81 lines (68 loc) · 1.12 KB
/
token_hack.go
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package rule
// will hack handle in valueStage
type tokenHackLPAREN struct {
baseToken
}
func (t *tokenHackLPAREN) Symbol() Symbol {
return LPAREN
}
func (t *tokenHackLPAREN) SymbolFn() SymbolFn {
return nil
}
func (t *tokenHackLPAREN) CanNext(token Token) error {
validNextKinds := []Symbol{
NOT, // !
NEGATE, // -1,-2,-3...
NUMBER,
BOOL,
IDENT,
FUNC,
STRING,
LPAREN,
RPAREN,
}
return t.canRunNext(validNextKinds, token)
}
// will hack handle in valueStage
type tokenHackRPAREN struct {
baseToken
}
func (t *tokenHackRPAREN) Symbol() Symbol {
return RPAREN
}
func (t *tokenHackRPAREN) SymbolFn() SymbolFn {
return nil
}
func (t *tokenHackRPAREN) CanNext(token Token) error {
validNextKinds := []Symbol{
EQL, // ==
NEQ, // !=
GTR, // >
GEQ, // >=
LSS, // <
LEQ, // <=
AND, // &
OR, // |
XOR, // ^
SHL, // <<
SHR, // >>
ADD, // +
SUB, // -
MUL, // *
QUO, // /
REM, // %
NOT, // !
LAND, // &&
LOR, // ||
NUMBER,
BOOL,
IDENT,
STRING,
RPAREN,
COMMA,
}
return t.canRunNext(validNextKinds, token)
}
func (t *tokenHackRPAREN) CanEOF() bool {
return true
}