public override void EnterIfElse(FlyParser.IfElseContext context)
{
// TODO: Implement in CodeGenerator
var endPositions = new List <int>();
EnterExpression(context.ifExpr);
Code.Instructions.Add(OpCode.JMP_FALSE);
// Create an empty parameter which should be the end of the statement
var ifEndPos = Code.Instructions.FillableInt();
Code.Instructions.Block(() =>
{
foreach (var statement in context._if)
{
EnterStatement(statement);
}
});
Code.Instructions.Add(OpCode.JMP);
endPositions.Add(Code.Instructions.FillableInt());
Code.Instructions.FillInt(ifEndPos, Code.Instructions.Count);
if (context._elifExpr.Count > 0)
{
for (var i = 0; i < context._elifExpr.Count; i++)
{
var expr = context._elifExpr[i];
var block = context._elifSb[i];
EnterExpression(expr);
Code.Instructions.Add(OpCode.JMP_FALSE);
var elifEndPos = Code.Instructions.FillableInt();
Code.Instructions.Block(() =>
{
foreach (var stmt in block.statement())
{
EnterStatement(stmt);
}
});
Code.Instructions.Add(OpCode.JMP);
endPositions.Add(Code.Instructions.FillableInt());
Code.Instructions.FillInt(elifEndPos, Code.Instructions.Count);
}
}
if (context._else.Count > 0)
{
Code.Instructions.Block(() =>
{
foreach (var statement in context._else)
{
EnterStatement(statement);
}
});
}
endPositions.ForEach(x => Code.Instructions.FillInt(x, Code.Instructions.Count));
}
/// <summary>
/// Exit a parse tree produced by <see cref="FlyParser.ifElse"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitIfElse([NotNull] FlyParser.IfElseContext context)
{
}
