Consider the following grammar rule in the picture below. Write the Java method to parse these Simple Expressions using the code below as a reference.

/**

* Use as a reference

*/

S -> if e then block else block

--------------------------------------------

public AST rExpr() throws SyntaxError {

AST t;

if (isNextTok(Tokens.If))

{

scan();

t = new IfTree();

t.addKid(rExpr());

expect(Tokens.Then);

t.addKid(rBlock());

expect(Tokens.Else);

t.addKid(rBlock());

return t;

}

Use this grammar rule please.

Production TYPE "float" TYPE "void S 'return' NAME (E list E SE SE Description FLOAT token VOID token Return statement for void functions Calling void functions GREAT token