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142 Commits

Author SHA1 Message Date
ISSOtm
eb5af70d79 Add unsigned right shift operator 2022-02-05 20:12:15 +01:00
Rangi
20a26599a3 Simplify allocating multiple ds args 
Dealing with indexes is only necessary for `strfmt`
 2021-12-01 20:24:31 -05:00
Rangi
7bdfc9da23 Really don't use new as a variable name 2021-11-30 17:06:36 -05:00
Rangi
b9fd85470e Reword docs now that SET is deprecated (#946) 
- '=' constants are "variables" (not "mutable constants")
- EQU constants are "numeric constants" (not "immutable constants")
- EQUS constants are "string constants" (not "string equates")
- DS declarations are "static allocations" (not "variables")
 2021-11-22 17:08:29 -05:00
ISSOtm
b04e71ed34 Use correct length type for Abs*Group 2021-11-21 18:28:42 +01:00
Rangi
8e2a164a32 Implement compound assignment operators for mutable constants 
Fixes #943
 2021-11-19 08:50:00 +01:00
Rangi
b76819792d Deprecate SET in favor of = 
`SET` is redundant with `=`, and is already the name of an instruction.
 2021-11-19 00:05:49 +01:00
Rangi
3e945679ad Standardize on "east const" (type const * not const type *) 
Avoid "WARNING: Move const after static - use 'static const char'"
 2021-11-18 09:12:00 +01:00
Rangi
e5552e27f2 strrstr can take and return char const * 2021-11-17 22:47:05 -05:00
Rangi
0bb815edc0 Implement -Wnumeric-string[=0|1|2] (#935) 
Fixes #934
 2021-11-12 23:09:35 +01:00
Rangi
47442941b6 Support ! operator for condition codes (#720) 
Fixes #719
 2021-11-02 00:16:52 +01:00
Rangi
80a376f045 Syntax errors resets the lexer right away 
`DEF`, `REDEF`, etc disable EQUS expansion, and reading
macro or OPT arguments sets the lexer to raw mode.
Syntax errors resume normal parsing at the line's end,
but should resume normal tokenization even before that.
 2021-05-22 16:08:55 -04:00
Rangi
0068c1375c Syntax error message hints to indent macro invocations 
This message is only printed for identifiers parsed as
`T_LABEL` (since they're at the start of a line) but
already defined as macros. Otherwise it may not be
relevant, e.g. for `MyLabel;:` or `My Label::`.
 2021-05-22 14:58:26 +02:00
Rangi
5ad48851ed Allow error messages for subsequent syntax errors (#892) 
Fixes #891
 2021-05-21 17:04:27 -04:00
Eldred Habert
c06985a7ad Fix incorrect lexing of "$ff00+c" (#882) 
Fixes #881 by moving the task from the lexer to the parser.
This both alleviates the need for backtracking in the lexer,
removing what is (was) arguably a hack, and causes tokenization
boundaries to be properly respected, fixing the issue mentioned above.

Co-authored-by: Rangi <remy.oukaour+rangi42@gmail.com>
 2021-05-05 02:04:19 +02:00
ISSOtm
8bbafb7200 Rename out_ functions in section.c to sect_ 
More consistent with convention used everywhere, and makes it easier to
know which file the functions come from.
 2021-05-03 12:22:14 +02:00
Rangi
ca36422ac9 Parse 'ld hl, sp - <e8>' correctly 
Fixes #864
 2021-05-01 11:08:01 +02:00
Rangi
8e4ba8d2e4 Allow REDEF for EQU constants 
Fixes #853
 2021-04-29 12:24:07 +02:00
Rangi
bba532193b Port some cleanup from PR #847 
- Update some whitespace formatting
- Factor out some functions
- Free data after outputting to an object file
 2021-04-28 11:58:56 -04:00
Rangi
4d21588eb2 Make invalid UTF-8 characters in strings non-fatal 
STRLEN and STRSUB report the erroneous bytes

Fixes #848
 2021-04-22 09:59:02 +02:00
Rangi
7a587eb7d6 Use midrule action values for captures' terminated status 
Bison 3.1 introduces "typed midrule values", which would write
`<captureTerminated>{ ... }` and `$$` instead of `{ ... }` and
`$<captureTerminated>[1-9]`, but rgbds supports 3.0 or even lower.
 2021-04-20 17:10:08 +02:00
Rangi
7ac8bd6e24 Return a marker token at the end of any buffer 
Removes the lexer hack mentioned in #778
 2021-04-20 17:10:08 +02:00
Rangi
cf2bbe6435 Position -1 is the last character of a string 
Position 0 is invalid, which matches with STRIN/STRRIN
returning 0 on failure.
 2021-04-20 14:27:59 +02:00
Rangi
dc5b7802c8 Make the len parameter optional in STRSUB(str, pos, len) 
An unspecified length will continue to the end of the string.
 2021-04-20 14:27:59 +02:00
Rangi
b1e6c73197 STRSUB and CHARSUB allow zero or negative positions 
These are offsets from the end of the string, as if the
STRLEN or CHARLEN respectively were added to the position.

Fixes #812
 2021-04-20 14:27:59 +02:00
ISSOtm
6d0a3c75e9 Get rid of Hungarian notation for good 
Bye bye it was not nice knowing ya
 2021-04-19 22:12:10 +02:00
Rangi
52797b6f68 Implement SIZEOF("Section") and STARTOF("Section") (#766) 
Updates the object file revision to 8

Fixes #765
 2021-04-17 18:36:26 -04:00
Rangi
2005ed1df9 Implement CHARLEN and CHARSUB 
Fixes #786
 2021-04-17 18:18:34 -04:00
Rangi
2c30ab8731 Allow OPT to modify -L 
-L is a Boolean flag option, so you specify 'OPT L' or 'OPT !L'.
 2021-04-18 00:11:18 +02:00
Rangi
c08cf783c8 Remove 'inline' from functions not in headers 2021-04-13 10:27:08 -04:00
Rangi
310d34c655 Comment on REG_SP and REG_AF both being 3 
No instruction needs to distinguish them both
 2021-03-31 18:41:42 -04:00
Rangi
363b3d0134 Flush stdout after PRINTLN 
This allows debug PRINTLN statements to run even if
subsequent rgbasm directives cause a crash.
 2021-03-31 11:22:41 -04:00
Rangi
aaa92659ea Require a plus sign in ld hl, sp + <e8> 
Fixes #810
 2021-03-30 13:05:21 -04:00
Rangi
be877134e5 Remove support for ld bc/de/hl/sp for ld hl, bc/de/hl/sp 
Fixes #811
 2021-03-30 13:01:49 -04:00
Rangi
7e127a4e52 Don't expand string symbols in MACRO and FOR symbol names 
Explicit {interpolation} can still achieve this, but
to match DEF, REDEF, and PURGE, these new directives that
define symbols do not expand string EQUS.
 2021-03-19 01:48:36 +01:00
Rangi
b8093847dc New definition syntax with leading DEF keyword 
This will enable fixing #457 later once the old
definition syntax is removed.
 2021-03-19 01:48:36 +01:00
ISSOtm
60019cf476 Fix a bunch of Clang warnings 
As reported by #789
Should avoid relying on 32-bit int (for implicit conversions)
and account for more extreme uses of RGBDS.
 2021-03-10 10:56:57 +01:00
Rangi
5e2bd35239 Factor out a 'plain_directive' parser rule similar to the reverted 'last_line' 
Also expand on the comment explaining how the EOF-newline hack affects the parser
 2021-03-02 20:46:17 -05:00
Rangi
6655e04ef0 Restore the "EOF-newline" lexer hack 
This was removed in b3c0db218d
(along with two unrelated changes).

Removing this hack introduced issue #742, whereby INCLUDing
a file without a trailing newline can cause a syntax error.

A more proper fix would involve Bison's tracking locations,
but for now the EOF-newline hack fixes the issue while only
affecting some reported errors (expecting "newline"
instead of "end of file").

Fixes #742
 2021-03-02 16:53:56 -08:00
daid
5d6e0677d9 Fix error-related issues (#773) 
* Mark `error` as a `format` function, to properly scan its format

* Fix the call to error() from parser.y:
  - Use '%s' to avoid passing an arbitrary format
  - Simplify yyerror overall

* Fix size parameter of %.*s format being an int... bonkers standard.

* Report the number of arguments required and provided on a STRFMT mismatch

* Add an assert to check for a very unlikely bug
 2021-03-02 16:34:19 +01:00
Rangi
56071599e7 Allow trailing commas in bare lists 
This applies to macro arguments, DB, DW, DL, DS,
PRINT, PRINTLN, EXPORT, PURGE, and OPT.

It also removes support for empty entries in DB/DW/DL.
(Deprecating it would require keeping parser support,
which is ambiguous with trailing commas.)

Fixes #753
 2021-03-02 11:48:20 +01:00
Rangi
0774f5eb9d Rename math.c/mymath.h to fixpoint.c/.h 
This also changes the functions' prefix
from "math_" to "fix_".
 2021-03-02 11:40:03 +01:00
Rangi
1dafc1c762 Allow empty macro arguments, with a warning 
Fixes #739
 2021-02-28 10:38:49 -08:00
Rangi
953f79c0d9 Support 'MACRO mac' as well as 'mac: MACRO' for defining macros 
The new syntax is used in documentation, but
the old syntax is not yet deprecated.
 2021-02-25 04:42:35 +01:00
Rangi
3c5e1caa7c Disallow "." as a local label 
Fixes #760
 2021-02-25 04:40:42 +01:00
Rangi
d4028fff10 Prevent ELIF or ELSE after an ELSE 
Fixes #749
 2021-02-25 04:39:49 +01:00
ISSOtm
bee62076c6 Allow ENDC at EOF without a newline 2021-02-20 00:51:33 +01:00
Rangi
8c0275480c Allow ds to take multiple values to repeat for a count (#725) 
Fixes #722
 2021-02-16 22:01:23 -05:00
Rangi
76d6ef8695 Implement LOAD UNION and LOAD FRAGMENT 
Fix #632
 2021-02-17 03:42:06 +01:00
Rangi
ee20d9010e Make @ relative to the start of a ds even at link time 
Fix #737
 2021-02-16 22:47:07 +01:00