Fix if EvaluateString contains ""

chenxu · chenxu · commit 32c152350caa · 2021-06-21T15:51:30.000+08:00
diff --git a/CodingSeb.ExpressionEvaluator/ExpressionEvaluator.cs b/CodingSeb.ExpressionEvaluator/ExpressionEvaluator.cs
@@ -2924,8 +2924,16 @@ protected virtual bool EvaluateString(string expression, Stack<object> stack, re
 
                     if (expression.Substring(i)[0] == '"')
                     {
-                        endOfString = true;
-                        stack.Push(resultString.ToString());
+                        if (expression.Substring(i).Length > 1 && expression.Substring(i)[1] == '"')
+                        {
+                            i += 2;
+                            resultString.Append(@"""");
+                        }
+                        else
+                        {
+                            endOfString = true;
+                            stack.Push(resultString.ToString());
+                        }
                     }
                     else if (expression.Substring(i)[0] == '{')
                     {

Original file line number	Diff line number	Diff line change
`@@ -2924,8 +2924,16 @@ protected virtual bool EvaluateString(string expression, Stack<object> stack, re`
`2924`	`2924`
`2925`	`2925`	`if (expression.Substring(i)[0] == '"')`
`2926`	`2926`	`{`
`2927`		`- endOfString = true;`
`2928`		`- stack.Push(resultString.ToString());`
	`2927`	`+ if (expression.Substring(i).Length > 1 && expression.Substring(i)[1] == '"')`
	`2928`	`+ {`
	`2929`	`+ i += 2;`
	`2930`	`+ resultString.Append(@"""");`
	`2931`	`+ }`
	`2932`	`+ else`
	`2933`	`+ {`
	`2934`	`+ endOfString = true;`
	`2935`	`+ stack.Push(resultString.ToString());`
	`2936`	`+ }`
`2929`	`2937`	`}`
`2930`	`2938`	`else if (expression.Substring(i)[0] == '{')`
`2931`	`2939`	`{`