/*
 * CodeGenerator.h - Declaration of the CodeGenerator class
 *
 * Part of the assignment of the Compiler Construction course
 * LIACS, Leiden University
 */

#ifndef _CODEGENERATOR_H_
#define _CODEGENERATOR_H_

#include <cstdio>
#include "SymbolTable.h"
#include "IntermediateCode.h"
#include "StackFrameManager.h"
#include "RegisterManager.h"
// This class handles the assembly code generation. Extend it to your own
// needs.
class CodeGenerator {
public:
  // Constructor
  CodeGenerator();

  // Destructor
  ~CodeGenerator();

  // Dump generated output
  void Dump(FILE * out);

  // Generates a header
  void GenerateHeader(FILE * out);

  // Generates the declarations for the global variables
  void GenerateGlobalDecls(FILE * out, SymbolTable * symtab);

  // Takes an IntermediateCode object and emits MIPS assembly instructions
  void GenerateCode(FILE * out, SymbolTable * symtab, IntermediateCode * inputCode);

  // Generates a trailer
  void GenerateTrailer(FILE * out);

private:
  MOperand *IOperand2MOperand(IOperand *opnd);
  MStatement *BinaryArithmetic(MOperator opcode, IStatement *stmt,
          const char * comment = "Binary Arithmetic");
  MStatement *BranchInstruction(MOperator opcode, IStatement *stmt,
          bool swap  = false, const char * comment = "Branch Instruction Int");
  MStatement *BranchInstructionReal(MOperator opcode, IStatement *stmt,
          bool swap  = false, const char * comment = "Branch Instruction Real");
  MStatement *UnaryArithmetic(MOperator opcode, IStatement *stmt,
          const char * comment = "UnaryArithmetic");
  MStatement *StackPointerChange(int offset, const char * comment = NULL);


  // The current stack frame:
  AssemblerCode mCode;
  StackFrameManager currentFrame;
  RegisterManager rManager;
};

#endif