#ifndef INFIXEXP_H
#define INFIXEXP_H

//prefixExp.h
typedef struct ExpTreeNode *ExpTree;

typedef struct ExpTreeNode {
  TokenType tt;
  Token t;
  ExpTree left;
  ExpTree right;
} ExpTreeNode;

ExpTree newExpTreeNode(TokenType tt, Token t, ExpTree tL, ExpTree tR);
int valueIdentifier(List *lp, char **sp);
double valueExpTree(ExpTree tr);
int treePrefixExpression(List *lp, ExpTree *tp);
void printExpTreeInfix(ExpTree tr);
void prefExpTrees();
void freeExpTree(ExpTree tr);
int isOperator(char c);
int isNumerical(ExpTree tr);
int valueOperator(List *lp, char *cp);

//infixExp.h
int isOperatorAddSub(char c);
int isOperatorMulDiv(char c);
int valueOperatorExp(List *lp, char *cp);
int valueOperatorTerm(List *lp, char *cp);
ExpTree treeExpression(List *lp);
ExpTree treeTerm(List *lp);
ExpTree treeFactor(List *lp);
void infixSolver();

#endif