feat: rename IO.write to IO.print and add Unicode escape support in strings

Rename the IO.write method to IO.print, which now prints without a trailing newline, and add a new IO.print method that appends a newline after output. Update all benchmark, example, and test files to use IO.print instead of IO.write. Additionally, implement Unicode escape sequence parsing in the compiler's string tokenizer, supporting \uXXXX and \u{...} syntax with proper UTF-8 encoding for code points up to U+10FFFF.

test/variable/global_in_initializer.wren

@@ -1,2 +1,2 @@
 var a = a == null
-IO.write(a) // expect: true
+IO.print(a) // expect: true

test/variable/global_without_initializer.wren

@@ -1,2 +1,2 @@
 var a
-IO.write(a) // expect: null
+IO.print(a) // expect: null

test/variable/local_in_initializer.wren

@@ -1,5 +1,5 @@
 // skip: Variables should not be in scope in their initializer.
 {
   var a = a + 1 // expect error
-  IO.write(a)
+  IO.print(a)
 }

test/variable/local_in_middle_of_block.wren

@@ -1,13 +1,13 @@
 class Foo {
   bar {
     var a = "a"
-    IO.write(a) // expect: a
+    IO.print(a) // expect: a
     var b = a + " b"
-    IO.write(b) // expect: a b
+    IO.print(b) // expect: a b
     var c = a + " c"
-    IO.write(c) // expect: a c
+    IO.print(c) // expect: a c
     var d = b + " d"
-    IO.write(d) // expect: a b d
+    IO.print(d) // expect: a b d
   }
 }
 

test/variable/local_in_nested_block.wren

@@ -1,6 +1,6 @@
 {
   var a = "outer"
   {
-    IO.write(a) // expect: outer
+    IO.print(a) // expect: outer
   }
 }

test/variable/local_without_initializer.wren

@@ -1,4 +1,4 @@
 {
   var a
-  IO.write(a) // expect: null
+  IO.print(a) // expect: null
 }

test/variable/many_locals.wren

@@ -255,5 +255,5 @@
   var a253 = a252
   var a254 = a253
   var a255 = a254
-  IO.write(a255) // expect: value
+  IO.print(a255) // expect: value
 }

test/variable/many_nonsimultaneous_locals.wren

@@ -259,7 +259,7 @@
     var a253 = a252
     var a254 = a253
     var a255 = a254
-    IO.write(a255) // expect: value a
+    IO.print(a255) // expect: value a
   }
 
   {
@@ -519,6 +519,6 @@
     var b253 = b252
     var b254 = b253
     var b255 = b254
-    IO.write(b255) // expect: value b
+    IO.print(b255) // expect: value b
   }
 }

test/variable/scope_if.wren

@@ -3,11 +3,11 @@ var a = "out"
 if (true) {
   var a = "in"
 }
-IO.write(a) // expect: out
+IO.print(a) // expect: out
 
 // Create a local scope for the 'else' expression.
 var b = "out"
 if (false) "dummy" else {
   var b = "in"
 }
-IO.write(b) // expect: out
+IO.print(b) // expect: out

test/variable/scope_reuse_in_different_blocks.wren

@@ -1,9 +1,9 @@
 {
   var a = "first"
-  IO.write(a) // expect: first
+  IO.print(a) // expect: first
 }
 
 {
   var a = "second"
-  IO.write(a) // expect: second
+  IO.print(a) // expect: second
 }

test/variable/scope_while.wren

@@ -4,4 +4,4 @@ var i = 0
 while ((i = i + 1) <= 1) {
   var a = "inner"
 }
-IO.write(a) // expect: outer
+IO.print(a) // expect: outer

test/variable/shadow_and_local.wren

@@ -1,8 +1,8 @@
 {
   var a = "outer"
   {
-    IO.write(a) // expect: outer
+    IO.print(a) // expect: outer
     var a = "inner"
-    IO.write(a) // expect: inner
+    IO.print(a) // expect: inner
   }
 }

test/variable/shadow_global.wren

@@ -1,6 +1,6 @@
 var a = "global"
 {
   var a = "shadow"
-  IO.write(a) // expect: shadow
+  IO.print(a) // expect: shadow
 }
-IO.write(a) // expect: global
+IO.print(a) // expect: global

test/variable/shadow_in_initializer.wren

@@ -3,6 +3,6 @@
   var a = "outer"
   {
     var a = a + " inner"
-    IO.write(a) // expect: outer inner
+    IO.print(a) // expect: outer inner
   }
 }

test/variable/shadow_local.wren

@@ -2,7 +2,7 @@
   var a = "local"
   {
     var a = "shadow"
-    IO.write(a) // expect: shadow
+    IO.print(a) // expect: shadow
   }
-  IO.write(a) // expect: local
+  IO.print(a) // expect: local
 }

test/variable/undefined_global.wren

@@ -1 +1 @@
-IO.write(notDefined)  // expect error
+IO.print(notDefined)  // expect error

test/variable/undefined_local.wren

@@ -1,3 +1,3 @@
 fn {
-  IO.write(notDefined)  // expect error
+  IO.print(notDefined)  // expect error
 }.call