public Variable Execute(Space space) {
if (!Sentence.IsSuccess(_valueExpression.Execute(space))) {
ErrorLogger.LogRuntimeError(ErrorRuntimeCode.VariableArrayItemAnalysis, "The expression execute failed!");
return null;
}
var retValue = _valueExpression.value;
Variable retVariable = null;
var expressionVecSize = _indexExpressionVec.Count;
for (var i = 0; i < expressionVecSize; ++i) {
if (!ValueTool.IsArray(retValue)) {
ErrorLogger.LogRuntimeError(ErrorRuntimeCode.VariableArrayItemAnalysis, "The result of expression isn't a array!");
return null;
}
var arr = (retValue as ValueArray).value;
var expression = _indexExpressionVec[i];
if (!Sentence.IsSuccess(expression.Execute(space))) {
ErrorLogger.LogRuntimeError(ErrorRuntimeCode.VariableArrayItemAnalysis, "The expression execute failed!");
return null;
}
var indexValue = expression.value;
if (!ValueTool.IsInteger(indexValue)) {
ErrorLogger.LogRuntimeError(ErrorRuntimeCode.VariableArrayItemAnalysis, "The index isn't a integer value!");
return null;
}
var index = (int) ((indexValue as ValueNumber).value);
if (index >= arr.Count) {
ErrorLogger.LogRuntimeError(ErrorRuntimeCode.VariableArrayItemAnalysis, "The index out of range!");
return null;
}
retVariable = arr[index];
if (!retVariable) {
ErrorLogger.LogRuntimeError(ErrorRuntimeCode.VariableArrayItemAnalysis, "The array value is invalid!");
return null;
}
retValue = retVariable.value;
}
return retVariable;
}
private static Sentence _ParseEnumDefine(string src, int size, int pos, out int nextPos) {
nextPos = pos;
if (!Grammar.MatchEnum(src, size, pos, out pos)) {
return null;
}
if (!Jump(src, size, pos, out pos)) {
return null;
}
string name;
if (!Grammar.MatchName(src, size, pos, out pos, out name)) {
return null;
}
Jump(src, size, pos, out pos);
if (!Grammar.MatchObjectBegin(src, size, pos, out pos)) {
return null;
}
var checkNameSet = new HashSet<string>();
var checkValueSet = new HashSet<double>();
var valueList = new LinkedList<KeyValuePair<string, ValueNumber>>();
double indexValue = 0;
while (true) {
if (pos >= size) {
return null;
}
Jump(src, size, pos, out pos);
if (Grammar.MatchObjectEnd(src, size, pos, out pos)) {
break;
}
string valueName = "";
if (!Grammar.MatchName(src, size, pos, out pos, out valueName)) {
return null;
}
Jump(src, size, pos, out pos);
if (Grammar.MatchAssign(src, size, pos, out pos)) {
Jump(src, size, pos, out pos);
if (!Grammar.MatchNumber(src, size, pos, out pos, out indexValue)) {
return null;
}
Jump(src, size, pos, out pos);
}
var valueNumber = new ValueNumber(indexValue);
if (!ValueTool.IsInteger(valueNumber)) {
return null;
}
if (checkNameSet.Contains(valueName)) {
return null;
}
if (checkValueSet.Contains(indexValue)) {
return null;
}
checkNameSet.Add(valueName);
checkValueSet.Add(indexValue);
valueList.AddLast(new KeyValuePair<string, ValueNumber>(valueName, valueNumber));
Jump(src, size, pos, out pos);
if (!Grammar.MatchSplitSymbol(src, size, pos, out pos)) {
if (Grammar.MatchObjectEnd(src, size, pos, out pos)) {
break;
}
return null;
}
indexValue += 1;
}
nextPos = pos;
return new SentenceEnumDefine(name, valueList);
}