public void Visit(FunctionCallStmt funcCallStmt, object[] args)
{
//检查存在性！
funcCallStmt.Name = reader.Name;
funcCallStmt.ParamMap = new Dictionary <string, FireEngine.FireMLEngine.Expr.Expression>();
int attCount = reader.AttributeCount;
for (int i = 0; i < attCount; i++)
{
reader.MoveToAttribute(i);
if (reader.Name == "return")
{
funcCallStmt.ReturnDest = exprParser.ParseLeftValueExpr(reader.Value,
new Location(file, reader.LineNumber, reader.LinePosition).Offset(reader.Name.Length + 2)); //TODO: Location
}
else if (reader.Name == "par")
{
//FINISH: 解析参数字串！
string[] paraStrList = ParaStrProcessor.ReadParaCallList(reader.Value);
if (paraStrList == null)
{
kernel.IssueError(ErrorType.ParaStrCallFormatError, getCurrentLoc(), reader.Value);
}
else
{
funcCallStmt.ParaStr = paraStrList;
}
}
else
{
//先把实参按字符串暂存，之后扫描AST树时再按指定类型解析
funcCallStmt.ParamMap.Add(reader.Name,
exprParser.CreateStringConst(reader.Value,
new Location(file, reader.LineNumber, reader.LinePosition).Offset(reader.Name.Length + 2) //TODO: Location
));
}
}
}
public override void Visit(FunctionCallStmt funcCallStmt, object[] args)
{
if (!root.FuncDefMap.ContainsKey(funcCallStmt.Name))
{
kernel.IssueError(ErrorType.FunctionNotExist, funcCallStmt.Location, funcCallStmt.Name);
return;
}
FunctionDef def = root.FuncDefMap[funcCallStmt.Name];
//解析ParaStr
if (funcCallStmt.ParaStr != null)
{
int count = funcCallStmt.ParaStr.Length;
if (def.ParaStrMap.ContainsKey(count))
{
for (int i = 0; i < funcCallStmt.ParaStr.Length; i++)
{
string varName = def.ParaStrMap[count][i];
string content = funcCallStmt.ParaStr[i];
if (funcCallStmt.ParamMap.ContainsKey(varName))
{
kernel.IssueError(ErrorType.DuplicatedParaAndParaStr, funcCallStmt.Location, varName);
}
else
{
funcCallStmt.ParamMap.Add(varName, exprParser.CreateStringConst(content, funcCallStmt.Location));
}
}
}
else
{
kernel.IssueError(ErrorType.NoMatchedParaStrDef, funcCallStmt.Location);
}
}
//解析实参
List <KeyValuePair <string, Expression> > toModify = new List <KeyValuePair <string, Expression> >();
foreach (KeyValuePair <string, Expression> actual in funcCallStmt.ParamMap)
{
ParameterDef paramDef = def.ParaMap[actual.Key];
string actualStr = ((actual.Value as RightValueExpr).RightValue as StringConst).Value;
Location loc = actual.Value.Location;
RightValue parsedValue = null;
RightValueExpr rightValueExpr = new RightValueExpr();
switch (paramDef.ParameterType)
{
case ParameterDef.ParameterTypeEnum.Auto:
parsedValue = exprParser.ParseValue(actualStr, loc);
break;
case ParameterDef.ParameterTypeEnum.String:
continue;
case ParameterDef.ParameterTypeEnum.Expression:
toModify.Add(new KeyValuePair <string, Expression>(actual.Key, exprParser.ParseExpr(actualStr, loc)));
continue;
case ParameterDef.ParameterTypeEnum.Int:
parsedValue = exprParser.ParseValue(actualStr, DataType.Int, loc);
break;
case ParameterDef.ParameterTypeEnum.Float:
parsedValue = exprParser.ParseValue(actualStr, DataType.Float, loc);
break;
case ParameterDef.ParameterTypeEnum.Bool:
parsedValue = exprParser.ParseValue(actualStr, DataType.Bool, loc);
break;
}
rightValueExpr.RightValue = parsedValue;
rightValueExpr.Location = loc;
toModify.Add(new KeyValuePair <string, Expression>(actual.Key, rightValueExpr));
}
foreach (KeyValuePair <string, Expression> elem in toModify)
{
funcCallStmt.ParamMap[elem.Key] = elem.Value;
}
//添加默认值
foreach (KeyValuePair <string, ParameterDef> pDef in def.ParaMap)
{
if (!funcCallStmt.ParamMap.ContainsKey(pDef.Key) && pDef.Value.Default != null)
{
RightValueExpr expr = new RightValueExpr();
expr.RightValue = pDef.Value.Default;
funcCallStmt.ParamMap.Add(pDef.Key, expr);
}
}
//参数完整性检查
foreach (KeyValuePair <string, ParameterDef> pDef in def.ParaMap)
{
if (!funcCallStmt.ParamMap.ContainsKey(pDef.Key))
{
kernel.IssueError(ErrorType.ParameterNotDefined, funcCallStmt.Location, pDef.Key);
}
}
base.Visit(funcCallStmt, args);
//TODO: 刷新Expression的DataType
}