public override bool Build(ref CodeNode _this, int expressionDepth, Dictionary <string, VariableDescriptor> variables, CodeContext codeContext, InternalCompilerMessageCallback message, FunctionInfo stats, Options opts)
{
var res = base.Build(ref _this, expressionDepth, variables, codeContext, message, stats, opts);
if (!res && _this == this)
{
if (_left is StringConcatenation)
{
_this = _left;
var temp = (_left as StringConcatenation)._parts;
Array.Resize(ref temp, temp.Length + 1);
temp[temp.Length - 1] = _right;
(_left as StringConcatenation)._parts = temp;
}
else if (_right is StringConcatenation)
{
_this = _right;
var temp = (_right as StringConcatenation)._parts;
Array.Resize(ref temp, temp.Length + 1);
Array.Copy(temp, 0, temp, 1, temp.Length - 1);
temp[0] = _left;
(_right as StringConcatenation)._parts = temp;
}
else
{
if (_left.ContextIndependent && _left.ResultType == PredictedType.String)
{
if (_left.Evaluate(null).ToString().Length == 0)
{
_this = new ConvertToString(_right);
}
else
{
_this = new StringConcatenation(new[] { _left, _right });
}
}
else if (_right.ContextIndependent && _right.ResultType == PredictedType.String)
{
if (_right.Evaluate(null).ToString().Length == 0)
{
_this = new ConvertToString(_left);
}
else
{
_this = new StringConcatenation(new[] { _left, _right });
}
}
else if (_left.ResultType == PredictedType.String ||
_right.ResultType == PredictedType.String)
{
_this = new StringConcatenation(new[] { _left, _right });
}
}
}
return(res);
}
public override bool Build(ref CodeNode _this, int expressionDepth, Dictionary <string, VariableDescriptor> variables, CodeContext codeContext, CompilerMessageCallback message, FunctionInfo stats, Options opts)
{
var res = base.Build(ref _this, expressionDepth, variables, codeContext, message, stats, opts);
if (!res && _this == this)
{
if (_left is StringConcatenation)
{
_this = _left;
(_left as StringConcatenation)._parts.Add(_right);
}
else if (_right is StringConcatenation)
{
_this = _right;
(_right as StringConcatenation)._parts.Insert(0, _left);
}
else
{
if (_left.ContextIndependent && _left.Evaluate(null)._valueType == JSValueType.String)
{
if (_left.Evaluate(null).ToString().Length == 0)
{
_this = new ConvertToString(_right);
}
else
{
_this = new StringConcatenation(new List <Expression>()
{
_left, _right
});
}
}
else if (_right.ContextIndependent && _right.Evaluate(null)._valueType == JSValueType.String)
{
if (_right.Evaluate(null).ToString().Length == 0)
{
_this = new ConvertToString(_left);
}
else
{
_this = new StringConcatenation(new List <Expression>()
{
_left, _right
});
}
}
}
}
return(res);
}