public ElifBlock()
{
Type = BlockType.ELIF;
Begin = new string[] { "elif " };
End = new string[] { };
AllowedContent = new BlockType[] {
BlockType.THEN,
BlockType.COMMAND,
};
ConstraintsContent.Add(ContentConstraint.OneOfEachType());
}
public virtual void Eat(ref string script)
{
// eat beginning
foreach (string begin in Begin)
{
if (script.StartsWith(begin))
{
script = script.Substring(begin.Length);
break;
}
}
// eat content
bool full = false;
while (script.Length > 0)
{
int previousLength = script.Length;
if (EndsWith(script: ref script))
{
break;
}
if (ConstraintsContent.Any(constraint => constraint(this)))
{
// content is full!
full = true;
break;
}
foreach (BlockType blockType in AllowedContent)
{
Block block = Blocks.CreateBlock(blockType);
if (block.StartsWith(script: ref script))
{
if (ConstraintsAddContent.Any(constraint => constraint(this, blockType)))
{
// content is full!
full = true;
break;
}
block.Eat(script: ref script);
if (block.IsValid)
{
Content.Add(block);
}
break;
}
}
if (!full && previousLength == script.Length)
{
Log.Warning("Stuck at: ");
Log.Indent++;
Log.Warning(script);
Log.Indent--;
break;
}
}
// trim script start
Blocks.TrimStart(script: ref script);
}
