public override void ExitParseRule([NotNull] BinShredParser.ParseRuleContext context)
{
processingActions.Pop();
}
public override void EnterParseRule([NotNull] BinShredParser.ParseRuleContext context)
{
string regionName = context.label().GetText();
parseActions[regionName] = new List <ParseAction>();
processingActions.Push(regionName);
if (String.IsNullOrEmpty(startAction))
{
startAction = regionName;
}
foreach (RuleBodyContext body in context.ruleBody())
{
// This is a rule that describes additional actions to be taken from something
// already parsed
// "(additional properties identified by propertyName from lookupTableName)"
if (body.ADDITIONAL() != null)
{
string propertyName = body.propertyName().GetText();
string lookupTableName = body.lookupTableName().GetText();
ProcessAdditionalProperties(propertyName, lookupTableName, regionName);
continue;
}
// Get the rule's label and descriptive comment (/** */)
string ruleLabel = body.label().GetText();
string ruleComment = null;
ITerminalNode docComment = body.DOC_COMMENT();
if (docComment != null)
{
ruleComment = docComment.GetText();
ruleComment = ruleComment.Substring(3, ruleComment.Length - 5).Trim();
}
// Get the rule's options
RuleOptionsContext options = body.ruleOptions();
if (options != null)
{
// This is a rule with actual options (i.e.: "(4 bytes as int32)")
ByteOptionContext byteOptions = options.byteOption();
int bytes = 0;
String byteLabel = String.Empty;
if (byteOptions.sizeReference().INT() != null)
{
bytes = Int32.Parse(byteOptions.sizeReference().INT().GetText());
}
else
{
byteLabel = byteOptions.sizeReference().label().GetText();
}
// This is a rule that extracts bytes in some format
ProcessByteExtraction(regionName, ruleLabel, ruleComment, byteOptions, bytes, byteLabel);
}
else
{
// This is a rule with a reference to another rule
if (body.ITEMS() != null)
{
// This is a rule which creates several records of a given record type
// (i.e.: (12 items) or (byteCount items)
int items = 0;
string itemLabel = String.Empty;
if (body.sizeReference().INT() != null)
{
items = Int32.Parse(body.sizeReference().INT().GetText());
}
else
{
itemLabel = body.sizeReference().label().GetText();
}
ProcessCountedRule(regionName, ruleLabel, ruleComment, items, itemLabel);
}
else
{
this.parseActions[regionName].Add(
new ParseAction((content, contentPosition) =>
{
OrderedDictionary currentResult = new OrderedDictionary(StringComparer.OrdinalIgnoreCase);
results.Peek().Add(ruleLabel, currentResult);
RunRule(ruleComment, ruleLabel, currentResult);
return(0);
}
));
}
}
}
}
