Removed a string allocation from numeric token parsing.

RyanLamansky · RyanLamansky · commit 1ece12cd443d · 2025-12-03T18:55:37.000-06:00
diff --git a/SqlServerSimulator/Parser/Tokens/Numeric.cs b/SqlServerSimulator/Parser/Tokens/Numeric.cs
@@ -4,11 +4,13 @@ namespace SqlServerSimulator.Parser.Tokens;
 
 internal sealed class Numeric : Token
 {
-    public readonly IFormattable Value;
+    public readonly ISpanFormattable Value;
 
     public Numeric(StringBuilder buffer)
     {
-        var number = buffer.ToString();
+        Span<char> number = stackalloc char[buffer.Length];
+        buffer.CopyTo(0, number, buffer.Length);
+        _ = buffer.Clear();
 
         if (int.TryParse(number, out var int32))
         {

Original file line number	Diff line number	Diff line change
`@@ -4,11 +4,13 @@ namespace SqlServerSimulator.Parser.Tokens;`
`4`	`4`
`5`	`5`	`internal sealed class Numeric : Token`
`6`	`6`	`{`
`7`		`- public readonly IFormattable Value;`
	`7`	`+ public readonly ISpanFormattable Value;`
`8`	`8`
`9`	`9`	`public Numeric(StringBuilder buffer)`
`10`	`10`	`{`
`11`		`- var number = buffer.ToString();`
	`11`	`+ Span<char> number = stackalloc char[buffer.Length];`
	`12`	`+ buffer.CopyTo(0, number, buffer.Length);`
	`13`	`+ _ = buffer.Clear();`
`12`	`14`
`13`	`15`	`if (int.TryParse(number, out var int32))`
`14`	`16`	`{`