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72 Commits

Author SHA1 Message Date
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
Rangi
fc2bf3d11d Prefer sizeof($$) to MAXSTRLEN + 1 
This makes `strsubUTF8` similar to `strrpl` and `strfmt`
 2021-02-14 16:16:52 +01:00
Rangi
ebb5aab6db Correct some comments 
nPCOffset no longer exists, and the lexer only
returns T_NEWLINE for EOF in raw mode.
 2021-02-14 16:16:52 +01:00
ISSOtm
88e1cc7302 Make EOF token name consistent across Bison versions 
The "end of file" name apparently only became a default recently
 2021-02-11 13:04:43 +01:00
ISSOtm
b3c0db218d Remove "EOF-newline" lexer hack 
In preparation for an upcoming change
Makes for nicer error messages, complaining about EOF instead of newlines
The hack had to be kept for the lexer raw mode to avoid a bug;
see the relevant code comment for more info.
 2021-02-11 12:48:37 +01:00
ISSOtm
76446e6d00 Change behavior of merging FRAGMENTs to constrain each fragment individually 
Additionally, remove the deprecated merging of non-fragment SECTIONs
 2021-02-10 10:19:16 +01:00
ISSOtm
70bbb098d3 Remove stale keywords 
They were removed from the grammar, but not the lexer
 2021-01-23 00:05:56 +01:00
ISSOtm
1926065377 Enable Bison warnings 
-Wall should be old enough.
Also use %empty instead of comments
 2021-01-23 00:05:56 +01:00
Rangi
e3d355d976 Attempt to recover from syntax errors with bison 
Fixes #595
 2021-01-22 15:54:24 +01:00
ISSOtm
a679e02246 Get rid of asm.h and localasm.h 
No need to make them global
 2021-01-22 13:34:16 +01:00
ISSOtm
fa0fa4d5ac Significantly overhaul OPT code 
Simplify the mess that was option setting (2 redundant variables !?)
Move options to a separate file
Have "modules" own their options, and OPT only access them (less redundancy)
Simplify code, respect naming conventions better
 2021-01-22 10:41:09 +01:00
ISSOtm
1487eebe79 Remove time counter 
Nobody uses that, and it requires running extra code for each line
 2021-01-22 08:51:57 +01:00
Rangi
f28b4abafc Fix a potential buffer overflow in strrpl 
This caused an error using clang with -O3 -flto
 2021-01-20 10:21:53 +01:00
Rangi
fb39c3a70e Consistently refer to "directives", not "pseudo-ops" 
Some docs and warnings already referred to SECTION and
db/dw/dl "directives", but others used "pseudo-ops".
 2021-01-19 15:03:22 +01:00
Rangi
93d83e17dc Don't override bison's internal 'yytnamerr' function 
This is not used in all bison versions, which causes a
"defined but not used" warning for the 'rgbasm_yytnamerr'
replacement, treated as an error by 'make develop'.
 2021-01-15 11:51:31 +01:00
Rangi
df16e64fc6 Handle MACRO and REPT/FOR bodies differently 
Fixes #697
 2021-01-15 02:16:37 +01:00
Rangi
eb4952c188 Use more verbose syntax error messages 
Fixes #385
 2021-01-14 18:36:10 +01:00
ISSOtm
57b734a7df Reinstate RL into the _RS family 
Removal of colon-less labels lifted the grammar ambiguity that
prevented `RL` from being usable as a variable declarator.
Thus, reinstate its functionality.
 2021-01-11 01:38:03 +01:00
Rangi
cab9cb06a3 Store IF depth relative to each fstack context 
This disallows starting/ending an IF inside an
INCLUDEd file or a macro expansion
 2021-01-09 20:12:14 +01:00
Rangi
62bea23c49 Implement BREAK to exit REPT and FOR loops 
Fixes #684
 2021-01-08 21:13:23 +01:00
Rangi
77279984a5 Implement STRRPL 
Fixes #660

STRRPL(str, "", new) does nothing
(warn about it with -Wempty-strrpl)
 2021-01-04 00:20:35 +01:00