Phase 4 : Code GenerationProgram.javapublic void cgen(PrintWriter s) {CgenClassTable cct = new CgenClassTable(getClasses(), s);}codeGeneration.CgenClassTable.javaThe following steps are performed in the constructortry {installBasicClasses();installClasses(cls);buildInheritanceTree();code();exitScope();} catch (NoScopePresentException e) {Utilities.fatalError(e);}Generating code for classes•installClasses(cls) would generate the code for all the classes by iterating through all the classes.• code() performs all the data related functions, and the in the last line calls codeMethods()• codeMethods() functioncalls the treeNodes.Method.cgen(…) function, which needs to be implemented by you.treeNodes.Method.cgen(…)• This might look familiar to you now:public void cgen(java.io.PrintWriter str, codeGeneration.CgenNode cls ) {cls.setMethodFormals(formals);expr.cgen(str, cls);}• Implement all cgen(java.io.PrintWriter str, codeGeneration.CgenNode cls) methods in treeNodes.* classesTips:• Look at spim.pdf if you would like to look at the instrction set.• Compare the code generated by the binary and use diff to find places where you might be going
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