PREFACE

refer to

• Parse Tree
• 9000 + 24
• 9000 + (6*4)
• Parse Tree Operator
  • PrimaryExpression
  • MultiplicativeExpression
  • AdditiveExpression
  • Arithmetic expression

Parse Tree

9000 + 24

9000 + (6*4)

Parse Tree Operator

PrimaryExpression

PrimaryExpression:
    NUM
    (Expression)

MultiplicativeExpression

MultiplicativeExpression:
        PrimaryExpression
        PrimaryExpression  mop PrimaryExpression  ...   mop PrimaryExpression  

// multiplicative operator
mop:
            *  
            / 

AdditiveExpression

AdditiveExpression:
      MultiplicativeExpression
      MultiplicativeExpression  aop MultiplicativeExpression  ...   aop MultiplicativeExpression  

// additive operator
aop:
            +  
            -

Arithmetic expression

Expression:
      AdditiveExpression

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