uCalc API Version: 2.1.3-preview.2 Released: 6/17/2026

Warning

uCalc API Preview Release Notice:The documentation describes the intended behavior of the API. The current preview build contains incomplete features, unoptimized performance, and is subject to breaking changes.

{@StatementSeparator}

Product: 

Class: 

Remarks

Description: A structural category matcher that identifies any token defined as a terminator or separator between distinct logic statements (e.g., ; or a newline).

The {@StatementSeparator} directive (shorthand {@Sep}) is used within a uCalc::Transformer to identify the boundaries of a statement. In many programming and data-formatting languages, statements must be separated to prevent ambiguity.

By targeting the category of a separator rather than a specific character, uCalc allows you to write transformation rules that are portable across different syntax styles.

Supported Separators

By default, the engine typically recognizes:

  • Semicolons: ; (The standard explicit separator).
  • Newlines: \n or \r\n (use uCalc.ItemOf("_Token_Newline").Release() to remove newline as a separator).

Why use {@StatementSeparator}?

Using this directive instead of a literal ; is a "Best Practice" for parser building:

  1. Flexibility: Your transformer can process both "C-style" code (semicolons) and "Basic-style" or "Python-style" code (newlines) using the same logic.
  2. Accuracy: It prevents matching delimiters that exist inside strings or comments, as {@StatementSeparator} only triggers on tokens recognized by the lexer as functional separators.

Inverse Matching with !

The universal inversion operator ! can be applied:

  • {@StatementSeparator}: Matches a statement terminator.
  • {!StatementSeparator}: Matches any token that is not a separator (useful for capturing the entire "meat" of a statement).

Strategy & Critique

  • Structural Abstraction: This is one of uCalc's most powerful architectural features. It treats "Statement Termination" as a logical concept rather than a character-matching task.
  • Ambiguity Note: In some languages, a newline is only a separator if the current statement isn't "open" (e.g., inside an unclosed parenthesis). Because {@StatementSeparator} relies on the engine's tokenization, it automatically inherits this advanced context-awareness.
  • See Also: Refer to Topic 811 ({@Newline}) for matching line breaks specifically.

Current Time: Tuesday, January 13, 2026 at 8:55 PM EST.

Examples

{@StatementSeparator}
				
					using uCalcSoftware;

var uc = new uCalc();
var t = uc.NewTransformer();
t.FromTo("{@StatementSeparator}", "<sep>");
Console.WriteLine(t.Transform("a = b + c; x = y + 1;"));
				
			
a = b + c<sep> x = y + 1<sep>
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   auto t = uc.NewTransformer();
   t.FromTo("{@StatementSeparator}", "<sep>");
   cout << t.Transform("a = b + c; x = y + 1;") << endl;
}
				
			
a = b + c<sep> x = y + 1<sep>
				
					Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      Dim t = uc.NewTransformer()
      t.FromTo("{@StatementSeparator}", "<sep>")
      Console.WriteLine(t.Transform("a = b + c; x = y + 1;"))
   End Sub
End Module
				
			
a = b + c<sep> x = y + 1<sep>
Matching by token type
				
					using uCalcSoftware;

var uc = new uCalc();
var t = uc.NewTransformer();

t.FromTo("{@String:txt}", "<<InnerQuote={txt}><TxtWithQuotes={txt(0)}>>");
t.FromTo("{@Number:MyNum}", "<NumericValue={MyNum}>");
t.FromTo("{@Bracket:MyBrack}", "<Brack={MyBrack}>");
t.FromTo("{@CloseBracket:CloseBr}", "<CloseBrack={CloseBr}>");
t.FromTo("{@StatementSeparator:Sep}", "<Separator={Sep}>");
t.FromTo("{@Alphanumeric:alpha}", "<Alpha={alpha}>");
t.FromTo("{@Whitespace:ws}", "<whitespace count={@Eval: Length(ws)}>");
t.FromTo("{@Reducible:r}", "<Reducible={r}>");
t.FromTo("{@Newline}", "<New line{@Newline}>");

var s = """
This is   55.2*6 "Hello world";
'Single quote'(parenth)
""";

Console.WriteLine(t.Filter(s).Matches.Text);
				
			
<Alpha=This>
<whitespace count=1>
<Alpha=is>
<whitespace count=3>
<NumericValue=55.2>
<Reducible=*>
<NumericValue=6>
<whitespace count=1>
<<InnerQuote=Hello world><TxtWithQuotes="Hello world">>
<Separator=;>
<New line
>
<<InnerQuote=Single quote><TxtWithQuotes='Single quote'>>
<Brack=(>
<Alpha=parenth>
<CloseBrack=)>
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   auto t = uc.NewTransformer();

   t.FromTo("{@String:txt}", "<<InnerQuote={txt}><TxtWithQuotes={txt(0)}>>");
   t.FromTo("{@Number:MyNum}", "<NumericValue={MyNum}>");
   t.FromTo("{@Bracket:MyBrack}", "<Brack={MyBrack}>");
   t.FromTo("{@CloseBracket:CloseBr}", "<CloseBrack={CloseBr}>");
   t.FromTo("{@StatementSeparator:Sep}", "<Separator={Sep}>");
   t.FromTo("{@Alphanumeric:alpha}", "<Alpha={alpha}>");
   t.FromTo("{@Whitespace:ws}", "<whitespace count={@Eval: Length(ws)}>");
   t.FromTo("{@Reducible:r}", "<Reducible={r}>");
   t.FromTo("{@Newline}", "<New line{@Newline}>");

   auto s = R"(This is   55.2*6 "Hello world";
'Single quote'(parenth))";

   cout << t.Filter(s).Matches().Text() << endl;
}
				
			
<Alpha=This>
<whitespace count=1>
<Alpha=is>
<whitespace count=3>
<NumericValue=55.2>
<Reducible=*>
<NumericValue=6>
<whitespace count=1>
<<InnerQuote=Hello world><TxtWithQuotes="Hello world">>
<Separator=;>
<New line
>
<<InnerQuote=Single quote><TxtWithQuotes='Single quote'>>
<Brack=(>
<Alpha=parenth>
<CloseBrack=)>
				
					Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      Dim t = uc.NewTransformer()
      
      t.FromTo("{@String:txt}", "<<InnerQuote={txt}><TxtWithQuotes={txt(0)}>>")
      t.FromTo("{@Number:MyNum}", "<NumericValue={MyNum}>")
      t.FromTo("{@Bracket:MyBrack}", "<Brack={MyBrack}>")
      t.FromTo("{@CloseBracket:CloseBr}", "<CloseBrack={CloseBr}>")
      t.FromTo("{@StatementSeparator:Sep}", "<Separator={Sep}>")
      t.FromTo("{@Alphanumeric:alpha}", "<Alpha={alpha}>")
      t.FromTo("{@Whitespace:ws}", "<whitespace count={@Eval: Length(ws)}>")
      t.FromTo("{@Reducible:r}", "<Reducible={r}>")
      t.FromTo("{@Newline}", "<New line{@Newline}>")
      
      Dim s = "This is   55.2*6 ""Hello world"";
'Single quote'(parenth)"
      
      Console.WriteLine(t.Filter(s).Matches.Text)
   End Sub
End Module
				
			
<Alpha=This>
<whitespace count=1>
<Alpha=is>
<whitespace count=3>
<NumericValue=55.2>
<Reducible=*>
<NumericValue=6>
<whitespace count=1>
<<InnerQuote=Hello world><TxtWithQuotes="Hello world">>
<Separator=;>
<New line
>
<<InnerQuote=Single quote><TxtWithQuotes='Single quote'>>
<Brack=(>
<Alpha=parenth>
<CloseBrack=)>
Identifying any statement separator and replacing it with a standardized tag.
				
					using uCalcSoftware;

var uc = new uCalc();
var t = new uCalc.Transformer();
t.FromTo("{@StatementSeparator}", " [END_STMT]");

Console.WriteLine(t.Transform("x = 10; y = 20"));
				
			
x = 10 [END_STMT] y = 20
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   uCalc::Transformer t;
   t.FromTo("{@StatementSeparator}", " [END_STMT]");

   cout << t.Transform("x = 10; y = 20") << endl;
}
				
			
x = 10 [END_STMT] y = 20
				
					Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      Dim t As New uCalc.Transformer()
      t.FromTo("{@StatementSeparator}", " [END_STMT]")
      
      Console.WriteLine(t.Transform("x = 10; y = 20"))
   End Sub
End Module
				
			
x = 10 [END_STMT] y = 20
Internal Test (Configurability) Verifying that `{@StatementSeparator}` respects the engine's definition (e.g., checking if it correctly ignores a comma used as a parameter separator).
				
					using uCalcSoftware;

var uc = new uCalc();
var t = new uCalc.Transformer();
t.FromTo("{@StatementSeparator}", "STMT");

// Comma is not a StatementSeparator, so it should be ignored.
Console.WriteLine(t.Transform("func(a, b); next();"));
				
			
func(a, b)STMT next()STMT
				
					#include <iostream>
#include "uCalc.h"

using namespace std;
using namespace uCalcSoftware;

int main() {
   uCalc uc;
   uCalc::Transformer t;
   t.FromTo("{@StatementSeparator}", "STMT");

   // Comma is not a StatementSeparator, so it should be ignored.
   cout << t.Transform("func(a, b); next();") << endl;
}
				
			
func(a, b)STMT next()STMT
				
					Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      Dim t As New uCalc.Transformer()
      t.FromTo("{@StatementSeparator}", "STMT")
      
      '// Comma is not a StatementSeparator, so it should be ignored.
      Console.WriteLine(t.Transform("func(a, b); next();"))
   End Sub
End Module
				
			
func(a, b)STMT next()STMT
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