From 280cd8cbcb3782e7a6a7c3ae880e5ccfedaf79b1 Mon Sep 17 00:00:00 2001
From: Jan Pluskal <ipluskal@fit.vutbr.cz>
Date: Fri, 2 Oct 2020 06:43:43 +0200
Subject: [PATCH] Add CancellationToken support.

---
 .../languages/CSharpAsyncCompiler.scala       | 28 +++++++++----------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/shared/src/main/scala/io/kaitai/struct/languages/CSharpAsyncCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/CSharpAsyncCompiler.scala
index 5cc74193e..4bcaf203a 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/CSharpAsyncCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/CSharpAsyncCompiler.scala
@@ -144,11 +144,11 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
     out.dec
     out.puts(s"} else if (${privateMemberName(EndianIdentifier)} == true) {")
     out.inc
-    out.puts("await ReadLEAsync();")
+    out.puts("await ReadLEAsync(cancellationToken);")
     out.dec
     out.puts("} else {")
     out.inc
-    out.puts("await ReadBEAsync();")
+    out.puts("await ReadBEAsync(cancellationToken);")
     out.dec
     out.puts("}")
   }
@@ -158,7 +158,7 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
       case Some(e) => s"${e.toSuffix.toUpperCase}"
       case None => ""
     }
-    out.puts(s"public async Task<${type2class(_className)}> Read${suffix}Async()")
+    out.puts(s"public async Task<${type2class(_className)}> Read${suffix}Async(CancellationToken cancellationToken = default)")
     out.puts("{")
     out.inc
   }
@@ -273,10 +273,10 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
     out.puts(s"long _pos = $io.Pos;")
 
   override def seek(io: String, pos: Ast.expr): Unit =
-    out.puts(s"await $io.SeekAsync(${expression(pos)});")
+    out.puts(s"await $io.SeekAsync(${expression(pos)}, cancellationToken);")
 
   override def popPos(io: String): Unit =
-    out.puts(s"await $io.SeekAsync(_pos);")
+    out.puts(s"await $io.SeekAsync(_pos, cancellationToken);")
 
   override def alignToByte(io: String): Unit =
     out.puts(s"$io.AlignToByte();")
@@ -305,7 +305,7 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
     out.puts("{")
     out.inc
     out.puts("var i = 0;")
-    out.puts(s"while (! await $io.IsEofAsync()) {")
+    out.puts(s"while (! await $io.IsEofAsync(cancellationToken)) {")
     out.inc
   }
 
@@ -380,17 +380,17 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
   override def parseExpr(dataType: DataType, assignType: DataType, io: String, defEndian: Option[FixedEndian]): String = {
     dataType match {
       case t: ReadableType =>
-        s"await $io.Read${Utils.capitalize(t.apiCall(defEndian))}Async()"
+        s"await $io.Read${Utils.capitalize(t.apiCall(defEndian))}Async(cancellationToken)"
       case blt: BytesLimitType =>
-        s"await $io.ReadBytesAsync(${expression(blt.size)})"
+        s"await $io.ReadBytesAsync(${expression(blt.size)}, cancellationToken)"
       case _: BytesEosType =>
-        s"await $io.ReadBytesFullAsync()"
+        s"await $io.ReadBytesFullAsync(cancellationToken)"
       case BytesTerminatedType(terminator, include, consume, eosError, _) =>
-        s"await $io.ReadBytesTermAsync($terminator, $include, $consume, $eosError)"
+        s"await $io.ReadBytesTermAsync($terminator, $include, $consume, $eosError, cancellationToken)"
       case BitsType1 =>
-        s"await $io.ReadBitsIntAsync(1) != 0"
+        s"await $io.ReadBitsIntAsync(1, cancellationToken) != 0"
       case BitsType(width: Int) =>
-        s"await $io.ReadBitsIntAsync($width)"
+        s"await $io.ReadBitsIntAsync($width, cancellationToken)"
       case t: UserType =>
         val addParams = Utils.join(t.args.map((a) => translator.translate(a)), "", ", ", ", ")
         val addArgs = if (t.isOpaque) {
@@ -407,7 +407,7 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
           }
           s", $parent, ${privateMemberName(RootIdentifier)}$addEndian"
         }
-        s"await (new ${types2class(t.name)}($addParams$io$addArgs)).ReadAsync()"
+        s"await (new ${types2class(t.name)}($addParams$io$addArgs)).ReadAsync(cancellationToken)"
     }
   }
 
@@ -424,7 +424,7 @@ class CSharpAsyncCompiler(val typeProvider: ClassTypeProvider, config: RuntimeCo
   }
 
   override def userTypeDebugRead(id: String): Unit =
-    out.puts(s"await $id.ReadAsync();")
+    out.puts(s"await $id.ReadAsync(cancellationToken);")
 
   override def switchRequiresIfs(onType: DataType): Boolean = onType match {
     case _: IntType | _: EnumType | _: StrType => false