Reader: Add support for string literals.

1 files changed, 59 insertions, 0 deletions

diff --git a/MLKStringReader.m b/MLKStringReader.m
new file mode 100644
index 0000000..4c0acb9
--- /dev/null
+++ b/MLKStringReader.m
@@ -0,0 +1,59 @@
+/* -*- mode: objc; coding: utf-8 -*- */
+/* Étoilisp/Mulklisp, a Common Lisp subset for the Étoilé runtime.
+ * Copyright (C) 2008  Matthias Andreas Benkard.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "MLKStringReader.h"
+
+#import "MLKCharacter.h"
+#import "MLKCons.h"
+#import "MLKDynamicContext.h"
+#import "MLKReader.h"
+#import "MLKReadtable.h"
+#import "MLKPackage.h"
+#import "MLKStream.h"
+#import "runtime-compatibility.h"
+
+#import <Foundation/NSString.h>
+
+
+@implementation MLKStringReader
+-(NSArray *) applyToArray:(NSArray *)arguments
+{
+  MLKStream *stream;
+  unichar ch;
+  MLKReadtable *readtable;
+  unichar nextChar;
+  NSMutableString *string;
+
+  stream = [arguments objectAtIndex:0];
+  ch = [[arguments objectAtIndex:1] unicharValue];
+  readtable = [[MLKDynamicContext currentContext]
+                valueForSymbol:[[MLKPackage findPackage:@"COMMON-LISP"]
+                                  intern:@"*READTABLE*"]];
+  string = [NSMutableString string];
+
+  while ((nextChar = [stream readChar]) != ch)
+    {
+      if ([readtable isSingleEscapeCharacter:nextChar])
+        [string appendFormat:@"%C", [stream readChar]];
+      else
+        [string appendFormat:@"%C", nextChar];
+    }
+
+  return [NSArray arrayWithObject:string];
+}
+@end