private void EmitRel(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
int jmpLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Lab, jmpLab));
cond.Emit(codes, vtab, ctv);
int jnLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jn, jnLab));
int jzLab = int.MaxValue;
if (!cond.Comparer.Contains("="))
{
jzLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jz, jzLab));
}
loop.Emit(codes, vtab, ctv);
foreach (var cj in ctv.ContinueLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, cj));
}
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
if (!cond.Comparer.Contains("="))
{
codes.Add(new HRMCode(HRMInstr.Lab, jzLab));
}
codes.Add(new HRMCode(HRMInstr.Lab, jnLab));
foreach (var bkj in ctv.BreakLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, bkj));
}
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
if (IsConstantExpression)
{
return;
}
if (elements[0].Variable == "hand")
{
if (!elements[0].Positive)
{
throw new CompileException(ErrorHelper.MinusHand);
}
}
else
{
int addr = Helper.GetAddress(vtab, elements[0].Variable);
codes.Add(new HRMCode(HRMInstr.Cpyf, addr));
if (!elements[0].Positive)
{
// get zero
codes.Add(new HRMCode(HRMInstr.Sub, addr));
// get -var
codes.Add(new HRMCode(HRMInstr.Sub, addr));
}
}
for (int i = 1; i < elements.Count; i++)
{
codes.Add(
new HRMCode(
elements[i].Positive ? HRMInstr.Add : HRMInstr.Sub,
Helper.GetAddress(vtab, elements[i].Variable)));
}
}
private void EmitEqu(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
cond.Emit(codes, vtab, ctv);
int jzLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jz, jzLab));
if (cond.Comparer == "!=")
{
ifBlock?.Emit(codes, vtab, ctv);
}
else
{
elseBlock?.Emit(codes, vtab, ctv);
}
int jmpLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
codes.Add(new HRMCode(HRMInstr.Lab, jzLab));
if (cond.Comparer == "!=")
{
elseBlock?.Emit(codes, vtab, ctv);
}
else
{
ifBlock?.Emit(codes, vtab, ctv);
}
codes.Add(new HRMCode(HRMInstr.Lab, jmpLab));
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
foreach (var stmt in stmts)
{
stmt.Emit(codes, vtab, ctv);
}
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
exp.Emit(codes, vtab, ctv);
if (dest != "hand")
{
codes.Add(new HRMCode(HRMInstr.Cpyt, Helper.GetAddress(vtab, dest)));
}
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
if (ctv.ContinueLoopJump == null)
{
throw new CompileException(ErrorHelper.InvailedBC);
}
int jmpLab = ctv.JumpLabel++;
ctv.ContinueLoopJump.Add(jmpLab);
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
HashSet <int> prevBreakJmp = ctv.BreakLoopJump;
HashSet <int> prevContinueJmp = ctv.ContinueLoopJump;
ctv.BreakLoopJump = new HashSet <int>();
ctv.ContinueLoopJump = new HashSet <int>();
if (cond.IsConstantExpression)
{
if (cond.ConstantResult)
{
int jmpLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Lab, jmpLab));
loop.Emit(codes, vtab, ctv);
foreach (var cj in ctv.ContinueLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, cj));
}
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
foreach (var bkj in ctv.BreakLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, bkj));
}
}
else
{
loop.Emit(codes, vtab, ctv);
foreach (var cj in ctv.ContinueLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, cj));
}
foreach (var bkj in ctv.BreakLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, bkj));
}
}
}
else
{
//if (cond.Comparer == "==" || cond.Comparer == "!=")
// EmitEqu(codes, vtab, ctv);
//else
// EmitRel(codes, vtab, ctv);
}
ctv.BreakLoopJump = prevBreakJmp;
ctv.ContinueLoopJump = prevContinueJmp;
}
public HRMProgram(string code)
{
parser = new Parser(code);
ctv = new CompileTimeVars(code);
string token = parser.GetNextToken();
if (token == "var")
{
CreateVarTab();
}
block = new StmtBlock(parser);
token = parser.GetNextToken();
if (!string.IsNullOrWhiteSpace(token))
{
throw new CompileException(ErrorHelper.UnexpectedEndOfProgram);
}
}
private void EmitEqu(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
if (cond.Comparer == "!=")
{
int jmpLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Lab, jmpLab));
cond.Emit(codes, vtab, ctv);
int jzLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jz, jzLab));
loop.Emit(codes, vtab, ctv);
foreach (var cj in ctv.ContinueLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, cj));
}
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
codes.Add(new HRMCode(HRMInstr.Lab, jzLab));
foreach (var bkj in ctv.BreakLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, bkj));
}
}
else
{
int jmpLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Lab, jmpLab));
cond.Emit(codes, vtab, ctv);
int jzLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jz, jzLab));
int joutLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jmp, joutLab));
codes.Add(new HRMCode(HRMInstr.Lab, jzLab));
loop.Emit(codes, vtab, ctv);
foreach (var cj in ctv.ContinueLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, cj));
}
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
codes.Add(new HRMCode(HRMInstr.Lab, joutLab));
foreach (var bkj in ctv.BreakLoopJump)
{
codes.Add(new HRMCode(HRMInstr.Lab, bkj));
}
}
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
if (cond.IsConstantExpression)
{
if (cond.ConstantResult)
{
ifBlock?.Emit(codes, vtab, ctv);
}
else
{
elseBlock?.Emit(codes, vtab, ctv);
}
}
else if (cond.Comparer == "==" || cond.Comparer == "!=")
{
EmitEqu(codes, vtab, ctv);
}
else
{
EmitRel(codes, vtab, ctv);
}
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
if (cmd == "read")
{
codes.Add(new HRMCode(HRMInstr.In));
if (var != "hand")
{
codes.Add(new HRMCode(HRMInstr.Cpyt, Helper.GetAddress(vtab, var)));
}
}
else if (cmd == "write")
{
if (var != "hand")
{
codes.Add(new HRMCode(HRMInstr.Cpyf, Helper.GetAddress(vtab, var)));
}
codes.Add(new HRMCode(HRMInstr.Out));
}
else
{
throw new CompileException(ErrorHelper.Unknown);
}
}
private void EmitRel(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
cond.Emit(codes, vtab, ctv);
int jnLab = ctv.JumpLabel++, jzLab = int.MaxValue;
codes.Add(new HRMCode(HRMInstr.Jn, jnLab));
if (!cond.Comparer.Contains("="))
{
jzLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jz, jzLab));
}
ifBlock?.Emit(codes, vtab, ctv);
int jmpLab = ctv.JumpLabel++;
codes.Add(new HRMCode(HRMInstr.Jmp, jmpLab));
if (!cond.Comparer.Contains("="))
{
codes.Add(new HRMCode(HRMInstr.Lab, jzLab));
}
codes.Add(new HRMCode(HRMInstr.Lab, jnLab));
elseBlock?.Emit(codes, vtab, ctv);
codes.Add(new HRMCode(HRMInstr.Lab, jmpLab));
}
public void Emit(List <HRMCode> codes, Dictionary <string, int> vtab, CompileTimeVars ctv)
{
codes.Add(new HRMCode(HRMInstr.Dec, Helper.GetAddress(vtab, variable)));
}