+
+struct CYExpression {
+};
+
+struct CYToken {
+ virtual const char *Text() const = 0;
+};
+
+struct CYTokenLiteral :
+ CYExpression,
+ virtual CYToken
+{
+};
+
+struct CYTokenString :
+ CYTokenLiteral
+{
+};
+
+struct CYTokenNumber :
+ CYTokenLiteral
+{
+};
+
+struct CYTokenWord :
+ virtual CYToken
+{
+};
+
+struct CYTokenIdentifier :
+ CYExpression,
+ CYTokenWord
+{
+ const char *word_;
+
+ virtual const char *Text() const {
+ return word_;
+ }
+};
+
+struct CYExpressionPrefix :
+ CYExpression
+{
+ CYExpression *rhs_;
+
+ CYExpressionPrefix(CYExpression *rhs) :
+ rhs_(rhs)
+ {
+ }
+};
+
+struct CYExpressionInfix :
+ CYExpression
+{
+ CYExpression *lhs_;
+ CYExpression *rhs_;
+
+ CYExpressionInfix(CYExpression *lhs, CYExpression *rhs) :
+ lhs_(lhs),
+ rhs_(rhs)
+ {
+ }
+};
+
+struct CYExpressionPostfix :
+ CYExpression
+{
+ CYExpression *lhs_;
+
+ CYExpressionPostfix(CYExpression *lhs) :
+ lhs_(lhs)
+ {
+ }
+};
+
+struct CYExpressionAssignment :
+ CYExpression
+{
+ CYExpression *lhs_;
+ CYExpression *rhs_;
+
+ CYExpressionAssignment(CYExpression *lhs, CYExpression *rhs) :
+ lhs_(lhs),
+ rhs_(rhs)
+ {
+ }
+};
+
+#endif/*CYPARSER_HPP*/