/// <summary>
/// This method skips m_Modifications entry in prefab document and stores modifications in dictionaries
///
/// After this method is executed, lexer current token is null or indent of next entry (after m_Modifications)
/// </summary>
private void GetModifications(IBuffer buffer, YamlLexer lexer, int parentIndentSize, Dictionary <FileID, string> names, Dictionary <FileID, int?> rootIndexes)
{
FileID curTarget = null;
string curPropertyPath = null;
string curValue = null;
// Each property modifications is flow node:
// - target: ..
// propertyPath: ..
// value:
// Minus token means that new modification description is started
// There are several entries in description. We are interested only
// in target, propertyPath and value
while (UnitySceneDataUtil.FindNextIndent(lexer))
{
var currentSize = lexer.TokenEnd - lexer.TokenStart;
lexer.Advance();
var tokenType = lexer.TokenType;
if (tokenType == YamlTokenType.MINUS)
{
currentSize++;
AddData();
lexer.Advance();
}
if (currentSize <= parentIndentSize)
{
break;
}
UnitySceneDataUtil.SkipWhitespace(lexer);
tokenType = lexer.TokenType;
if (tokenType == YamlTokenType.NS_PLAIN_ONE_LINE_IN)
{
var text = buffer.GetText(new TextRange(lexer.TokenStart, lexer.TokenEnd));
if (text.Equals(UnityYamlConstants.TargetProperty))
{
lexer.Advance();
UnitySceneDataUtil.SkipWhitespace(lexer);
lexer.Advance(); // skip column
// [TODO] handle prefab in prefab
curTarget = UnitySceneDataUtil.GetFileId(buffer, lexer).WithGuid(null);
}
else if (text.Equals(UnityYamlConstants.PropertyPathProperty))
{
lexer.Advance();
UnitySceneDataUtil.SkipWhitespace(lexer);
lexer.Advance();
curPropertyPath = UnitySceneDataUtil.GetPrimitiveValue(buffer, lexer);
}
else if (text.Equals(UnityYamlConstants.ValueProperty))
{
lexer.Advance();
UnitySceneDataUtil.SkipWhitespace(lexer);
lexer.Advance();
curValue = UnitySceneDataUtil.GetPrimitiveValue(buffer, lexer);
}
}
}
AddData();
void AddData()
{
if (curTarget != null)
{
if (curPropertyPath != null && curPropertyPath.Equals(UnityYamlConstants.NameProperty))
{
names[curTarget] = curValue;
}
else if (curPropertyPath != null && curPropertyPath.Equals(UnityYamlConstants.RootOrderProperty))
{
rootIndexes[curTarget] = int.TryParse(curValue, out var r) ? (int?)r : null;
}
curTarget = null;
curPropertyPath = null;
curValue = null;
}
}
}
public void AddPrefabModification(IBuffer buffer)
{
var anchor = UnitySceneDataUtil.GetAnchorFromBuffer(buffer);
if (anchor == null)
{
return;
}
var lexer = new YamlLexer(buffer, false, false);
lexer.Start();
TokenNodeType currentToken;
var transformParentId = FileID.Null;
while ((currentToken = lexer.TokenType) != null)
{
if (currentToken == YamlTokenType.INDENT)
{
var indentSize = lexer.TokenEnd - lexer.TokenStart;
lexer.Advance();
currentToken = lexer.TokenType;
if (currentToken == YamlTokenType.NS_PLAIN_ONE_LINE_IN)
{
var text = buffer.GetText(new TextRange(lexer.TokenStart, lexer.TokenEnd));
if (text.Equals(UnityYamlConstants.TransformParentProperty))
{
lexer.Advance();
UnitySceneDataUtil.SkipWhitespace(lexer);
currentToken = lexer.TokenType;
if (currentToken == YamlTokenType.COLON)
{
lexer.Advance();
var result = UnitySceneDataUtil.GetFileId(buffer, lexer);
if (result != null)
{
transformParentId = result;
}
}
}
else if (text.Equals(UnityYamlConstants.ModificationsProperty))
{
var names = new Dictionary <FileID, string>();
var rootIndexes = new Dictionary <FileID, int?>();
GetModifications(buffer, lexer, indentSize, names, rootIndexes);
var id = new FileID(null, anchor);
Elements.Add(id,
new ModificationHierarchyElement(id, null, null, false, transformParentId, rootIndexes, names));
return;
}
}
}
else
{
lexer.Advance();
}
}
}
