Use var instead of let for variables

README.md

@@ -9,7 +9,7 @@ Current language syntax is documented in [SYNTAX_V2.md](SYNTAX_V2.md).
 Example:
 
 ```ynt
-let name = world
+var name = world
 print_line Hello ${name}
 ```
 
@@ -18,3 +18,4 @@ print_line Hello ${name}
 ```bash
 dotnet run --project YesNt.Interpreter -- path/to/script.ynt
 ```
+

SYNTAX_V2.md

@@ -20,7 +20,7 @@ This document describes the current, word-based YesNt syntax.
 ## Quick Example
 
 ```ynt
-let name = world
+var name = world
 func greet:
 print_line Hello ${name}
 return
@@ -40,10 +40,10 @@ end_if
 ## While Loops
 
 ```ynt
-let i = 3
+var i = 3
 while ${i} > 0:
 print_line ${i}
-let i = ${i} - 1 calc
+var i = ${i} - 1 calc
 end_while
 ```
 
@@ -51,7 +51,7 @@ end_while
 
 | Area | v1 Syntax | v2 Syntax | Notes |
 |---|---|---|---|
-| Variables | `<x = value` | `let x = value` | Local variable define/update. |
+| Variables | `<x = value` | `var x = value` | Local variable define/update. |
 | Variables | `!<x = value` | `global x = value` | Global variable define/update. |
 | Variables | `del x` | `delete x` | Deletes local first, then global. |
 | Variables | `>x` | `${x}` | Variable read/interpolation token. |
@@ -99,3 +99,4 @@ end_while
 
 - `%out` is intentionally kept as `%out`.
 - Postfix operations are `calc`, `eval`, and `task`.
+

YesNt.Interpreter.Tests/CodeFlowStatementsTests.cs

@@ -12,9 +12,9 @@ public class CodeFlowStatementsTests
     {
         List<string> lines =
         [
-            "let result = before",
+            "var result = before",
             "exit",
-            "let result = after",
+            "var result = after",
             "${result}"
         ];
 
@@ -27,7 +27,7 @@ public class CodeFlowStatementsTests
         List<string> lines =
         [
             "abort_all",
-            "let result = after",
+            "var result = after",
             "${result}"
         ];
 
@@ -78,3 +78,4 @@ public class CodeFlowStatementsTests
         YesNtAssert.ContainsTerminationMessage(lines, "Function \"nowhere\" not found");
     }
 }
+

YesNt.Interpreter.Tests/CodeFowStatementsTests.cs

@@ -26,9 +26,9 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = 1",
+            "var result = 1",
             "goto yes",
-            "let result = 0",
+            "var result = 0",
             "label yes:",
             "${result}"
         ];
@@ -40,9 +40,9 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = low",
+            "var result = low",
             "if 6 > 5:",
-            "let result = high",
+            "var result = high",
             "end_if",
             "${result}"
         ];
@@ -55,11 +55,11 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = low",
+            "var result = low",
             "if 6 < 5:",
-            "let result = high",
+            "var result = high",
             "else:",
-            "let result = medium",
+            "var result = medium",
             "end_if",
             "${result}"
         ];
@@ -72,12 +72,12 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = 0",
+            "var result = 0",
             "if 1 == 1:",
             "if 2 == 3:",
-            "let result = 1",
+            "var result = 1",
             "else:",
-            "let result = 2",
+            "var result = 2",
             "end_if",
             "end_if",
             "${result}"
@@ -91,9 +91,9 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let i = 3",
+            "var i = 3",
             "while ${i} > 0:",
-            "let i = ${i} - 1 calc",
+            "var i = ${i} - 1 calc",
             "end_while",
             "${i}"
         ];
@@ -106,9 +106,9 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let i = 0",
+            "var i = 0",
             "while ${i} > 0:",
-            "let i = 99",
+            "var i = 99",
             "end_while",
             "${i}"
         ];
@@ -121,15 +121,15 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let outer = 2",
+            "var outer = 2",
-            "let count = 0",
+            "var count = 0",
             "while ${outer} > 0:",
-            "let inner = 2",
+            "var inner = 2",
             "while ${inner} > 0:",
-            "let count = ${count} + 1 calc",
+            "var count = ${count} + 1 calc",
-            "let inner = ${inner} - 1 calc",
+            "var inner = ${inner} - 1 calc",
             "end_while",
-            "let outer = ${outer} - 1 calc",
+            "var outer = ${outer} - 1 calc",
             "end_while",
             "${count}"
         ];
@@ -142,11 +142,11 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = 0",
+            "var result = 0",
             "if 2 > 1:",
-            "let result = 1",
+            "var result = 1",
             "else:",
-            "let result = 2",
+            "var result = 2",
             "end_if",
             "${result}"
         ];
@@ -159,9 +159,9 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = 5",
+            "var result = 5",
             "if 1 == 2:",
-            "let result = 1",
+            "var result = 1",
             "end_if",
             "${result}"
         ];
@@ -174,11 +174,11 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let result = 0",
+            "var result = 0",
             "if 1 == 1 goto done",
-            "let result = 2",
+            "var result = 2",
             "label done:",
-            "let result = ${result} + 1 calc",
+            "var result = ${result} + 1 calc",
             "${result}"
         ];
 
@@ -228,7 +228,7 @@ public class CodeFlowTests
         List<string> lines =
         [
             "if 1 == 2:",
-            "let result = 1"
+            "var result = 1"
         ];
 
         YesNtAssert.ContainsTerminationMessage(lines, "No matching end_if found");
@@ -250,9 +250,9 @@ public class CodeFlowTests
     {
         List<string> lines =
         [
-            "let i = 0",
+            "var i = 0",
             "while ${i} > 1:",
-            "let i = ${i} + 1 calc"
+            "var i = ${i} + 1 calc"
         ];
 
         YesNtAssert.ContainsTerminationMessage(lines, "No matching end_while found");
@@ -269,3 +269,4 @@ public class CodeFlowTests
         YesNtAssert.ContainsTerminationMessage(lines, "No matching while found");
     }
 }
+

YesNt.Interpreter.Tests/ConsoleStatementsTests.cs

@@ -62,7 +62,7 @@ public class ConsoleStatementsTests
 
                 List<string> lines =
                 [
-                    "let value = %read_line",
+                    "var value = %read_line",
                     "${value}"
                 ];
 
@@ -95,7 +95,7 @@ public class ConsoleStatementsTests
 
         List<string> lines =
         [
-            "let value = %read_key"
+            "var value = %read_key"
         ];
 
         _ = Task.Run(() => interpreter.Execute(lines, true));
@@ -108,3 +108,4 @@ public class ConsoleStatementsTests
         StringAssert.Contains(output.ToString(), "Terminated by external process");
     }
 }
+

YesNt.Interpreter.Tests/FunctionStatementsTests.cs

@@ -32,14 +32,14 @@ public class FunctionStatementsTests
             "goto main",
             "func probe:",
             "global hasInBefore = %has_in",
-            "let consume = %in",
+            "var consume = %in",
             "global hasInAfter = %has_in",
             "push_out ${hasInBefore}",
             "push_out ${hasInAfter}",
             "return",
             "label main:",
             "call probe with x",
-            "let hasOut = %has_out",
+            "var hasOut = %has_out",
             "${hasOut}"
         ];
 
@@ -57,7 +57,7 @@ public class FunctionStatementsTests
             "return",
             "label main:",
             "call make with anything",
-            "let value = %out",
+            "var value = %out",
             "${value}"
         ];
 
@@ -69,7 +69,7 @@ public class FunctionStatementsTests
     {
         List<string> lines =
         [
-            "let x = %out"
+            "var x = %out"
         ];
 
         YesNtAssert.ContainsTerminationMessage(lines, "No out argument in stack");
@@ -80,7 +80,7 @@ public class FunctionStatementsTests
     {
         List<string> lines =
         [
-            "let x = %in"
+            "var x = %in"
         ];
 
         YesNtAssert.ContainsTerminationMessage(lines, "Statement not allowed outside of function");
@@ -138,10 +138,11 @@ public class FunctionStatementsTests
         List<string> lines =
         [
             "clear_call_stack",
-            "let result = ok",
+            "var result = ok",
             "${result}"
         ];
 
         YesNtAssert.IsLastLineEqual(lines, "ok");
     }
 }
+

YesNt.Interpreter.Tests/ProcessingStatementsTests.cs

@@ -68,7 +68,7 @@ public class ProcessingStatementsTests
         List<string> lines =
         [
             "sleep 5",
-            "let result = ok",
+            "var result = ok",
             "${result}"
         ];
 
@@ -81,7 +81,7 @@ public class ProcessingStatementsTests
         List<string> lines =
         [
             "length hello",
-            "let value = %out",
+            "var value = %out",
             "${value}"
         ];
 
@@ -95,7 +95,7 @@ public class ProcessingStatementsTests
 
         try
         {
-            File.WriteAllText(tempFile, "let imported = yes");
+            File.WriteAllText(tempFile, "var imported = yes");
 
             List<string> lines =
             [
@@ -139,3 +139,4 @@ public class ProcessingStatementsTests
         YesNtAssert.IsLastLineEqual(lines, "1", timeout: 3000);
     }
 }
+

YesNt.Interpreter.Tests/SystemStatementsTests.cs

@@ -13,7 +13,7 @@ public class SystemStatementsTests
         List<string> lines =
         [
             "exec cmd with /c,echo yesnt",
-            "let exitCode = %out",
+            "var exitCode = %out",
             "${exitCode}"
         ];
 
@@ -28,7 +28,7 @@ public class SystemStatementsTests
             "push_in /c",
             "push_in echo yesnt",
             "exec cmd",
-            "let exitCode = %out",
+            "var exitCode = %out",
             "${exitCode}"
         ];
 
@@ -46,3 +46,4 @@ public class SystemStatementsTests
         YesNtAssert.ContainsTerminationMessage(lines, "Failed to start \"does_not_exist_abc_xyz\"");
     }
 }
+

YesNt.Interpreter.Tests/VariableStatementsTests.cs

@@ -12,7 +12,7 @@ public class VariableStatementsTests
     {
         List<string> lines =
         [
-            "let value = hi",
+            "var value = hi",
             "${value}"
         ];
 
@@ -37,7 +37,7 @@ public class VariableStatementsTests
         List<string> lines =
         [
             "global value = global",
-            "let value = local",
+            "var value = local",
             "${value}"
         ];
 
@@ -49,7 +49,7 @@ public class VariableStatementsTests
     {
         List<string> lines =
         [
-            "let value = a",
+            "var value = a",
             "delete value",
             "global value = b",
             "${value}"
@@ -74,7 +74,7 @@ public class VariableStatementsTests
     {
         List<string> lines =
         [
-            "let a"
+            "var a"
         ];
 
         YesNtAssert.ContainsTerminationMessage(lines, "Invalid statement");
@@ -85,7 +85,7 @@ public class VariableStatementsTests
     {
         List<string> lines =
         [
-            "let a b = 1"
+            "var a b = 1"
         ];
 
         YesNtAssert.ContainsTerminationMessage(lines, "Invalid Syntax");
@@ -102,3 +102,4 @@ public class VariableStatementsTests
         YesNtAssert.ContainsTerminationMessage(lines, "Variable \"missing\" not found");
     }
 }
+

YesNt.Interpreter/Statements/VariableStatements.cs

@@ -1,4 +1,4 @@
-using System.Text.RegularExpressions;
+using System.Text.RegularExpressions;
 
 using YesNt.Interpreter.Attributes;
 using YesNt.Interpreter.Enums;
@@ -8,7 +8,7 @@ namespace YesNt.Interpreter.Statements;
 
 internal partial class VariableStatements : StatementRuntimeInformation
 {
-    [Statement("let", SearchMode.StartOfLine, SpaceAround.End, System.ConsoleColor.DarkBlue, Priority = Priority.VeryLow, Separator = "=")]
+    [Statement("var", SearchMode.StartOfLine, SpaceAround.End, System.ConsoleColor.DarkBlue, Priority = Priority.VeryLow, Separator = "=")]
     public void DefineVariable(string args)
     {
         string[] parts = args.Split('=');
@@ -118,3 +118,4 @@ internal partial class VariableStatements : StatementRuntimeInformation
     [GeneratedRegex("\\$\\{([a-zA-Z0-9]+)\\}")]
     private static partial Regex VariableStatementRegex();
 }
+