public Exprs.Expr STToExpr(ST.STTokensReader argReader)
{
argReader.CancelToken.ThrowIfCancellationRequested();
var pToken = argReader.Token;
var pTypeToken = pToken?.Token;
if (!pTypeToken.HasValue)
{
return(Exprs.Expr.Null);
}
switch (pTypeToken.Value)
{
case ST.ESTToken.Number:
return(Exprs.Expr.Number(argReader.TokenStr.Text));
case ST.ESTToken.Word:
var pWord = argReader.TokenStr;
if (argReader.NextIfNodeNextValue(t => t.Token == ST.ESTToken.Parenthesis))
{
return(STToFunctionExpr(pWord, argReader));
}
break;
}
throw new ST.STException(string.Format(Properties.Resources.NoExpectTokenException, pToken.ToString()), pToken.Line, pToken.Position);
}
public Exprs.FunctionExpr STToFunctionExpr(ST.STTokenStr argWord, ST.STTokensReader argReader)
{
argReader.CancelToken.ThrowIfCancellationRequested();
var pArgs = STBlocktoExprs(argReader);
return(Exprs.Expr.Function(argWord.Text, pArgs.ToArray()));
}
public Exprs.ExprCollection STBlocktoExprs(ST.STTokensReader argReader)
{
var pExprs = new Exprs.ExprCollection();
if (argReader.Token is ST.STTokenBlock pBlock)
{
foreach (var pTokens in pBlock.Tokens)
{
argReader.CancelToken.ThrowIfCancellationRequested();
var pReader = new ST.STTokensReader(pTokens, argReader.CancelToken);
var pExpr = STToExpr(pReader);
pExprs.Add(pExpr);
}
}
return(pExprs);
}
public EvalExprInResult EvalPrompt(ST.STTokensTerminate argTokens, CancellationToken argCancelToken)
{
var pReader = new ST.STTokensReader(argTokens, argCancelToken);
var pIn = STToExprIn(pReader);
var pContext = new EvalContext {
CancelToken = argCancelToken
};
var pOut = EvalIn(pContext, pIn);
var pIOE = mVars.AddInOut(pIn, pOut, out string pNameVarIn, out string pNameVarOut);
if (argTokens.Terminate == ST.ESTTokenizerTerminate.ShowResult)
{
mPost.PrintExprOutPost(GetPromptVar(pNameVarOut), pOut);
}
return(new EvalExprInResult {
Terminate = argTokens.Terminate, InExpr = pIn, OutExpr = pOut, NameVarIn = pNameVarIn, NameVarOut = pNameVarOut
});
}
public override string ToString() //=> (Tokens != null) ? string.Join(" ", Tokens) : string.Empty;
{
var pStr = string.Empty;
var pReader = new STTokensReader(this, CancellationToken.None);
while (!pReader.EOF)
{
if (pReader.IsPrev(2, n => n.Token == ESTToken.Number || n.Token == ESTToken.Word))
{
pStr += " ";
}
pStr += pReader.Token.ToString();
pReader.Next();
}
return(pStr);
/*
* var pTokens = Tokens.First;
*
* while (pTokens != null)
* {
* if (pTokens.Previous != null)
* switch (pTokens.Previous.Value.Token)
* {
* case ESTToken.Number:
* case ESTToken.Word:
* switch (pTokens.Value.Token)
* {
* case ESTToken.Number:
* case ESTToken.Word:
* pStr += " ";
* break;
* }
* break;
* }
* pStr += pTokens.Value.ToString();
* pTokens = pTokens.Next;
* }
*
* return pStr;
*/
}
public Exprs.Expr STToExprIn(ST.STTokensReader argReader) => STToExpr(argReader);