Identify tokens in the grammar before the implementation

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Reference no: EM132272003

Statement → (IF_statement | IFELSE_statement)

IF_statement → if (Condition) {Exp}

IFELSE_statement → if (Condition) {Exp} else { Exp }

Condition → ID Sign Term

Exp→ (Term + Term) | (Term-Term) Term→[0-9]+

ID→ ([A-Z] | [a-z])+

Sign→ > | < | ==

This is a grammar for IF statement

Your task in homework 02 is:
• Fixing the problems in the previous grammar
• Building a parser based on the previous grammar

Task 1:

Show the problems in the previous grammar and then Fix them

Task 2:
Implement a predictive parser using JavaCC

Hints:
• You must identify the tokens in the grammar before the implementation
• If and else are keywords

Take screenshots for:
• Lexical specification part (All tokens definition)
• Parser part
• Output of testing: :if (Ab>10) {1+2}
• Output of testing: :if (Ab<20) {1+2} else {1-2}
• Output of testing: :if (Ab<30) else {1-2}

Attachment:- Compiler Construction.rar

Reference no: EM132272003

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