/// <summary>
/// Iterates all rules into the first Show/Hide and changes the type for invalid rules.
/// DisabledBlocks are changed to comments and other rules are changed to ParseErrors.
/// </summary>
/// <returns>The index of the first Show/Hide rule or the index after the rules list.</returns>
private int FixStart(List <IFilterRule> rules)
{
bool hasDisabledBlock = false;
int i;
for (i = 0; i < rules.Count; i++)
{
IFilterRule rule = rules[i];
FilterType type = rule.Type;
if (type == FilterType.WhiteSpace)
{
continue;
}
if (type == FilterType.Show || type == FilterType.Hide)
{
break;
}
if (type == FilterType.DisabledBlock)
{
if (hasDisabledBlock)
{
continue;
}
DisabledBlock disabledBlock = (DisabledBlock)rule;
type = disabledBlock.Rule.Type;
if (type == FilterType.Show || type == FilterType.Hide)
{
hasDisabledBlock = true;
}
else
{
rules[i] = new WhiteSpace(); // replace disabled block with a comment since it doesn't have a Show/Hide
}
}
else
{
ParseError parseError;
if (type != FilterType.ParseError)
{
parseError = new ParseError(i + 1, 0, rule.Text, null, type);
rules[i] = parseError;
}
else
{
parseError = (ParseError)rule;
}
Errors.Add(parseError);
}
}
return(i);
}
private int AddDisabledBlocks(List <IFilterRule> rules, int start, int end)
{
string name = null;
int ruleEnd = start;
for (int i = start; i < end; i++)
{
IFilterRule rule = rules[i];
FilterType type = rule.Type;
if (type == FilterType.DisabledBlock)
{
DisabledBlock disabledBlock = (DisabledBlock)rule;
type = disabledBlock.Rule.Type;
if (type == FilterType.Show || type == FilterType.Hide)
{
if (name != null)
{
start = AddFilterBlock(rules, name, start, ruleEnd + 1);
Blocks.Last().IsDisabled = true;
}
name = rule.Text;
}
ruleEnd = i;
}
else
{
if (type != FilterType.WhiteSpace)
{
throw new InvalidOperationException(); // sanity check
}
if (rule.Comment == null)
{
ruleEnd = i;
}
}
}
if (name != null)
{
start = AddFilterBlock(rules, name, start, ruleEnd + 1);
Blocks.Last().IsDisabled = true;
}
return(start);
}
public PoeFilterFile(List <IFilterRule> rules)
{
if (rules.Count == 0)
{
return;
}
int i = FixStart(rules);
int start = 0;
for (; ;)
{
// add disabled blocks between start and i and change start to the new value
start = AddDisabledBlocks(rules, start, i);
if (i >= rules.Count)
{
break;
}
string name = rules[i].Comment;
i++;
int end = i; // the index of the last rule for the next block
for (; i < rules.Count; i++)
{
// find next Show/Hide (start of next block)
// start/end will store the indexes for this range
IFilterRule rule = rules[i];
FilterType type = rule.Type;
if (type == FilterType.Show || type == FilterType.Hide)
{
// move the end index forward to include commented code (DisabledBlocks) before next disabled Show/Hide
for (int j = end + 1; j < i; j++)
{
rule = rules[j];
type = rule.Type;
if (type == FilterType.DisabledBlock)
{
DisabledBlock disabledBlock = (DisabledBlock)rule;
type = disabledBlock.Rule.Type;
if (type == FilterType.Show || type == FilterType.Hide)
{
break;
}
end = j;
}
}
break;
}
if (type == FilterType.WhiteSpace || type == FilterType.DisabledBlock)
{
continue;
}
end = i;
}
end++;
// move end forward to capture empty whitespace
for (; end < i; end++)
{
IFilterRule rule = rules[end];
FilterType type = rule.Type;
if (type != FilterType.WhiteSpace || rule.Comment != null)
{
break;
}
}
start = AddFilterBlock(rules, name, start, end);
}
}
