Added support for \\ escape code. #241

src/main/java/dk/camelot64/kickc/model/values/ConstantChar.java

@@ -76,6 +76,8 @@ public class ConstantChar implements ConstantLiteral<Character> {
                return '\"';
             case '\'':
                return '\'';
+            case '\\':
+               return '\\';
             default:
                throw new CompileError("Illegal char escape sequence \\" + charString.charAt(1));
          }
@@ -99,6 +101,8 @@ public class ConstantChar implements ConstantLiteral<Character> {
             return "\\f";
          case '\'':
             return "\\'";
+         case '\\':
+            return "\\\\";
          default:
             return Character.toString(aChar);
       }

src/main/java/dk/camelot64/kickc/model/values/ConstantString.java

@@ -133,6 +133,9 @@ public class ConstantString implements ConstantLiteral<String> {
                case '\'':
                   stringChar = '\'';
                   break;
+               case '\\':
+                  stringChar = '\\';
+                  break;
                default:
                   throw new CompileError("Illegal string escape sequence \\" + escapeChar);
             }
@@ -167,6 +170,9 @@ public class ConstantString implements ConstantLiteral<String> {
             case '"':
                stringResult.append("\\\"");
                break;
+            case '\\':
+               stringResult.append("\\\\");
+               break;
             default:
                stringResult.append(stringChar);
          }

src/test/kc/string-escapes-0.kc

@@ -1,6 +1,6 @@
 // Test using some simple supported string escapes \r \f \n \' \"
 
-char[] MESSAGE = "\r\f\n\"\'";
+char[] MESSAGE = "\r\f\n\"\'\\";
 char* SCREEN = 0x0400;
 
 void main() {

src/test/kc/string-escapes-2.kc

@@ -2,7 +2,7 @@
 
 #pragma encoding(petscii_mixed)
 
-char[] MESSAGE = "hello\nworld";
+char[] MESSAGE = "hello\nworld\\";
 
 const char* memA = 0xff;
 

src/test/ref/string-escapes-0.asm

@@ -16,5 +16,5 @@ main: {
     iny
     jmp b1
 }
-  MESSAGE: .text @"\r\f\n\"'"
+  MESSAGE: .text @"\r\f\n\"'\\"
   .byte 0

src/test/ref/string-escapes-0.log

@@ -35,7 +35,7 @@ main::@return: scope:[main]  from main::@1
 
 SYMBOL TABLE SSA
 (const string) $0 = (string) "

-"'"
+"'\"
 (label) @1
 (label) @2
 (label) @begin
@@ -198,7 +198,7 @@ main: {
     jmp b1
 }
   // File Data
-  MESSAGE: .text @"\r\f\n\"'"
+  MESSAGE: .text @"\r\f\n\"'\\"
   .byte 0
 
 REGISTER UPLIFT POTENTIAL REGISTERS
@@ -272,7 +272,7 @@ main: {
     jmp b1
 }
   // File Data
-  MESSAGE: .text @"\r\f\n\"'"
+  MESSAGE: .text @"\r\f\n\"'\\"
   .byte 0
 
 ASSEMBLER OPTIMIZATIONS
@@ -303,7 +303,7 @@ FINAL SYMBOL TABLE
 (label) @end
 (byte[]) MESSAGE
 (const byte[]) MESSAGE#0 MESSAGE = (string) "

-"'"
+"'\"
 (byte*) SCREEN
 (const byte*) SCREEN#0 SCREEN = (byte*) 1024
 (void()) main()
@@ -365,6 +365,6 @@ main: {
     jmp b1
 }
   // File Data
-  MESSAGE: .text @"\r\f\n\"'"
+  MESSAGE: .text @"\r\f\n\"'\\"
   .byte 0
 

src/test/ref/string-escapes-0.sym

@@ -3,7 +3,7 @@
 (label) @end
 (byte[]) MESSAGE
 (const byte[]) MESSAGE#0 MESSAGE = (string) "

-"'"
+"'\"
 (byte*) SCREEN
 (const byte*) SCREEN#0 SCREEN = (byte*) 1024
 (void()) main()

src/test/ref/string-escapes-2.asm

@@ -27,5 +27,5 @@ chrout: {
     rts
 }
 .encoding "petscii_mixed"
-  MESSAGE: .text @"hello\nworld"
+  MESSAGE: .text @"hello\nworld\\"
   .byte 0

src/test/ref/string-escapes-2.log

@@ -47,7 +47,7 @@ chrout::@return: scope:[chrout]  from chrout
 
 SYMBOL TABLE SSA
 (const string) $0 = (string) "hello
-world"pm
+world\"pm
 (label) @2
 (label) @3
 (label) @begin
@@ -260,7 +260,7 @@ chrout: {
 }
   // File Data
 .encoding "petscii_mixed"
-  MESSAGE: .text @"hello\nworld"
+  MESSAGE: .text @"hello\nworld\\"
   .byte 0
 
 REGISTER UPLIFT POTENTIAL REGISTERS
@@ -365,7 +365,7 @@ chrout: {
 }
   // File Data
 .encoding "petscii_mixed"
-  MESSAGE: .text @"hello\nworld"
+  MESSAGE: .text @"hello\nworld\\"
   .byte 0
 
 ASSEMBLER OPTIMIZATIONS
@@ -402,7 +402,7 @@ FINAL SYMBOL TABLE
 (label) @end
 (byte[]) MESSAGE
 (const byte[]) MESSAGE#0 MESSAGE = (string) "hello
-world"pm
+world\"pm
 (void()) chrout((byte) chrout::c)
 (label) chrout::@return
 (byte) chrout::c
@@ -491,6 +491,6 @@ chrout: {
 }
   // File Data
 .encoding "petscii_mixed"
-  MESSAGE: .text @"hello\nworld"
+  MESSAGE: .text @"hello\nworld\\"
   .byte 0
 

src/test/ref/string-escapes-2.sym

@@ -3,7 +3,7 @@
 (label) @end
 (byte[]) MESSAGE
 (const byte[]) MESSAGE#0 MESSAGE = (string) "hello
-world"pm
+world\"pm
 (void()) chrout((byte) chrout::c)
 (label) chrout::@return
 (byte) chrout::c