private void CompileBooleanCombination(Parser parser, ByteBuffer buffer, BooleanCombination boolComb, bool outputUsed)
{
if (!outputUsed) throw new ParserException(boolComb.FirstToken, "Cannot have this expression here.");
ByteBuffer rightBuffer = new ByteBuffer();
Expression[] expressions = boolComb.Expressions;
this.CompileExpression(parser, rightBuffer, expressions[expressions.Length - 1], true);
for (int i = expressions.Length - 2; i >= 0; --i)
{
ByteBuffer leftBuffer = new ByteBuffer();
this.CompileExpression(parser, leftBuffer, expressions[i], true);
Token op = boolComb.Ops[i];
if (op.Value == "&&")
{
leftBuffer.Add(op, OpCode.JUMP_IF_FALSE_NO_POP, rightBuffer.Size);
}
else
{
leftBuffer.Add(op, OpCode.JUMP_IF_TRUE_NO_POP, rightBuffer.Size);
}
leftBuffer.Concat(rightBuffer);
rightBuffer = leftBuffer;
}
buffer.Concat(rightBuffer);
}
protected override void TranslateBooleanCombination(List<string> output, BooleanCombination booleanCombination)
{
output.Add("(");
this.TranslateExpression(output, booleanCombination.Expressions[0]);
output.Add(")");
for (int i = 0; i < booleanCombination.Ops.Length; ++i)
{
if (booleanCombination.Ops[i].Value == "&&")
{
output.Add(" and ");
}
else
{
output.Add(" or ");
}
output.Add("(");
this.TranslateExpression(output, booleanCombination.Expressions[i + 1]);
output.Add(")");
}
}
protected abstract void TranslateBooleanCombination(List<string> output, BooleanCombination booleanCombination);