private void ResolveExprBlock(Grammar.ASTNodeExprBlock exprBlock, ref int curSegment, Core.DataAccess outputReg)
{
// Generate an empty tuple store if there are no subexpressions.
if (exprBlock.subexprs.Count == 0)
{
funct.AddInstruction(curSegment,
Core.InstructionMoveLiteralTuple.Empty(exprBlock.GetSpan().Displace(1, -1), outputReg));
return;
}
// Store the indices marking inner locals/registers.
var localScopeIndexBefore = localScopeLivenesses.Count;
var registerIndexBefore = funct.registerTypes.Count;
for (int i = 0; i < exprBlock.subexprs.Count; i++)
{
try
{
var subexprOutput = outputReg;
if (i < exprBlock.subexprs.Count - 1)
{
subexprOutput = new Core.DataAccessDiscard();
}
this.ResolveExpr(exprBlock.subexprs[i], ref curSegment, subexprOutput);
}
catch (Core.CheckException) { }
}
// Mark inner locals as out-of-scope.
for (var i = localScopeIndexBefore; i < localScopeLivenesses.Count; i++)
{
localScopeLivenesses[i] = false;
}
// Deinit inner registers.
for (var i = funct.registerTypes.Count - 1; i >= registerIndexBefore; i--)
{
funct.AddInstruction(curSegment, Core.InstructionDeinit.ForRegister(i));
}
}
private void ResolveExprBlock(Grammar.ASTNodeExprBlock exprBlock, ref int curSegment, Core.DataAccess outputReg)
{
// Generate an empty tuple store if there are no subexpressions.
if (exprBlock.subexprs.Count == 0)
{
funct.AddInstruction(curSegment,
Core.InstructionMoveLiteralTuple.Empty(exprBlock.GetSpan().Displace(1, -1), outputReg));
return;
}
// Store the indices marking inner locals/registers.
var localScopeIndexBefore = localScopeLivenesses.Count;
var registerIndexBefore = funct.registerTypes.Count;
for (int i = 0; i < exprBlock.subexprs.Count; i++)
{
try
{
var subexprOutput = outputReg;
if (i < exprBlock.subexprs.Count - 1)
subexprOutput = new Core.DataAccessDiscard();
this.ResolveExpr(exprBlock.subexprs[i], ref curSegment, subexprOutput);
}
catch (Core.CheckException) { }
}
// Mark inner locals as out-of-scope.
for (var i = localScopeIndexBefore; i < localScopeLivenesses.Count; i++)
localScopeLivenesses[i] = false;
// Deinit inner registers.
for (var i = funct.registerTypes.Count - 1; i >= registerIndexBefore; i--)
funct.AddInstruction(curSegment, Core.InstructionDeinit.ForRegister(i));
}
