ref: 0c85240b97af874a8245e2111e00effcdc6c3700
parent: 58ab88da82577ee9f73557fcb937016dbfd29893
author: Antonio Niño Díaz <antonio_nd@outlook.com>
date: Tue Feb 20 18:54:37 EST 2018
Allow line continuations in list of macro args
For example:
PrintMacro : MACRO
PRINTT \1
ENDM
PrintMacro STRCAT(\"Hello\"\, \
\" world\\n\")
It is possible to have spaces after the '\' and before the newline
character. This is needed because Windows line endings "\r\n" are
converted to " \n" before the lexer has a chance to handle them.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
--- a/src/asm/lexer.c
+++ b/src/asm/lexer.c
@@ -775,6 +775,32 @@
case '}':
ch = '}';
break;
+ case ' ':
+ /*
+ * Look for line continuation character after a
+ * series of spaces. This is also useful for
+ * files that use Windows line endings: "\r\n"
+ * is replaced by " \n" before the lexer has the
+ * opportunity to see it.
+ */
+ while (1) {+ if (*pLexBuffer == ' ') {+ pLexBuffer++;
+ } else if (*pLexBuffer == '\n') {+ pLexBuffer++;
+ nLineNo += 1;
+ ch = 0;
+ break;
+ } else {+ errx(1, "Expected a new line after the continuation character.");
+ }
+ }
+ break;
+ case '\n':
+ /* Line continuation character */
+ nLineNo += 1;
+ ch = 0;
+ break;
default:
maxLength = MAXSTRLEN - index;
length = CopyMacroArg(&yylval.tzString[index],