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Merge pull request #2209 from vrubleg/linecont 

ca65: `.LINECONT` as a part of `.FEATURE`
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Bob Andrews 2023-12-08 02:10:45 +01:00 committed by GitHub
parent 66bfc31988 850007cb44
commit 519a52d92c
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3 changed files with 26 additions and 23 deletions
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46
doc/ca65.sgml
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@ -2867,6 +2867,26 @@ See: <tt><ref id=".ASCIIZ" name=".ASCIIZ"></tt>,<tt><ref id=".CHARMAP" name=".CH
overridden. When using this feature, you may also get into trouble if
later versions of the assembler define new keywords starting with a dot.
<tag><tt>line_continuations</tt><label id="line_continuations"></tag>
Switch on or off line continuations using the backslash character
before a newline. The option is off by default.
Note: Line continuations do not work in a comment. A backslash at the
end of a comment is treated as part of the comment and does not trigger
line continuation.
Example:
<tscreen><verb>
.feature line_continuations + ; Allow line continuations
lda \
#$20 ; This is legal now
</verb></tscreen>
For backward compatibility reasons, the <tt>.LINECONT +</tt> control command
is also supported and enables the same feature.
<tag><tt>long_jsr_jmp_rts</tt><label id="long_jsr_jmp_rts"></tag>
Affects 65816 mode only.
@ -3371,26 +3391,6 @@ See: <tt><ref id=".ASCIIZ" name=".ASCIIZ"></tt>,<tt><ref id=".CHARMAP" name=".CH
the feature in more detail.
<sect1><tt>.LINECONT</tt><label id=".LINECONT"><p>
Switch on or off line continuations using the backslash character
before a newline. The option is off by default.
Note: Line continuations do not work in a comment. A backslash at the
end of a comment is treated as part of the comment and does not trigger
line continuation.
The command can be followed by a '+' or '-' character to switch the
option on or off respectively.
Example:
<tscreen><verb>
.linecont + ; Allow line continuations
lda \
#$20 ; This is legal now
</verb></tscreen>
<sect1><tt>.LIST</tt><label id=".LIST"><p>
Enable output to the listing. The command can be followed by a boolean
@ -4489,9 +4489,9 @@ different:
<item> Macros defined with <tt><ref id=".DEFINE" name=".DEFINE"></tt> may not
span more than a line. You may use line continuation (see <tt><ref
id=".LINECONT" name=".LINECONT"></tt>) to spread the definition over
more than one line for increased readability, but the macro itself
may not contain an end-of-line token.
id="line_continuations" name="line_continuations"></tt>) to spread the
definition over more than one line for increased readability, but the
macro itself may not contain an end-of-line token.
<item> Macros defined with <tt><ref id=".DEFINE" name=".DEFINE"></tt> share
the name space with classic macros, but they are detected and replaced

2
src/ca65/feature.c
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@ -67,6 +67,7 @@ static const char* const FeatureKeys[FEAT_COUNT] = {
"bracket_as_indirect",
"string_escapes",
"long_jsr_jmp_rts",
"line_continuations",
};
@ -121,6 +122,7 @@ void SetFeature (feature_t Feature, unsigned char On)
case FEAT_BRACKET_AS_INDIRECT: BracketAsIndirect = On; break;
case FEAT_STRING_ESCAPES: StringEscapes = On; break;
case FEAT_LONG_JSR_JMP_RTS: LongJsrJmpRts = On; break;
case FEAT_LINE_CONTINUATIONS: LineCont = On; break;
default: break;
}
}

1
src/ca65/feature.h
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@ -69,6 +69,7 @@ typedef enum {
FEAT_BRACKET_AS_INDIRECT,
FEAT_STRING_ESCAPES,
FEAT_LONG_JSR_JMP_RTS,
FEAT_LINE_CONTINUATIONS,
/* Special value: Number of features available */
FEAT_COUNT