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148 Commits

Author SHA1 Message Date
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
ISSOtm
bd244e6865 Remove deprecated features 
Trimming off the fat!
- GLOBAL and XDEF keywords
- Colon-less global labels
- *-comments
 2021-01-02 02:42:44 +01:00
Rangi
a70ecba06f Implement PRINT and PRINTLN (#672) 
Fixes #669
Closes #368
Closes #624

Deprecate PRINTT, PRINTV, PRINTI, and PRINTF

Default STRFMT("%f") to 5 fractional digits like "{f:}"
Any use of string formatting will share this default
 2021-01-02 02:37:32 +01:00
Rangi
9d2d5cfcfe Implement REDEF to allow redefining EQUS string equates 
Fixes #677
 2021-01-02 01:49:00 +01:00
Rangi
895ec5564d Update mathematical functions (#675) 
Document the existing `ROUND`, `CEIL`, and `FLOOR` functions
Also update the trig function docs for searchability

Implement `POW` and `LOG`
Addresses part of #675

Implement ** for integer exponents
** has higher precedence than -, like Python, so -3**4 == -(3**4) == 81
 2021-01-02 01:39:20 +01:00
Rangi
7bb6f71f0b Change FOREACH to FOR (#680) 2021-01-02 00:46:26 +01:00
Rangi
c0ce1da4c3 Implement STRFMT and more printf-like format specifiers for string interpolation (#646) 
Fixes #570
Fixes #178

Use errors for inapplicable format spec flags instead of -Wstring-format
 2020-12-29 22:53:15 +01:00
Rangi
6874f694e5 Implement FOREACH (#658) 
This acts like `REPT` with a variable automatically
incremented across a range of values

Fixes #432
 2020-12-29 21:30:42 +01:00
Rangi
f31deb5010 Fix STRUPR and STRLWR after 5aabb915ec 
Fixes #647
 2020-12-15 20:18:45 +01:00
ISSOtm
8f2a894b88 Add anonymous labels 
Fix #497
 2020-12-14 10:14:40 +01:00
ISSOtm
5aabb915ec Allow STRCAT to take any number of args 
Fixes bullet point 1 of #625
 2020-12-12 23:46:32 +01:00
ISSOtm
f5b0eae9cd Remove custom action code when equivalent to default 
Enables Bison to better reason about it, and should improve performance
 2020-12-12 12:22:36 +01:00
Rangi
165bd8cb71 Allow 'dw' and 'dl' to apply to characters of strings 
Fixes #568

The old behavior of `dw "string"` can be replicated with `dw ("string")`; likewise for dl
 2020-12-11 11:02:20 +01:00
Rangi
58739b0bf2 Implement STRRIN, like STRIN but searching from the right 2020-12-10 15:32:17 +01:00
ISSOtm
3e4c2fe712 Avoid error with old Bison versions 
`api.token.raw` is only defined starting with Bison 3.5
Since it's not essential, define it on the command-line iff the Bison
version is sufficient.
 2020-12-10 15:13:45 +01:00
ISSOtm
9b6f01047c Enable raw token types 
Removes one layer of indirection for the parser, and helps remove all literals from the grammar

The latter preparing the next change
 2020-12-09 21:22:05 +01:00
ISSOtm
eac365aef0 Allow argument to rb, rw and rl to be optional 
Fixes #617
 2020-12-09 09:31:47 +01:00
ISSOtm
4f842a1248 Create specialized symbol finder functions 
The old "find symbol with auto scope" function is now three:
- One finds the exact name passed to it, skipping any checks
  This is useful e.g. if such checks were already performed.
- One checks that the name is not scoped, and calls the first.
  This is useful for names that cannot be scoped, such as checking for EQUS.
  Doing this instead of the third should improve performance somehwat, since
  this specific case is hit by the lexer each time an identifier is read.
- The last one checks if the name should be expanded (`.loc` → `Glob.loc`),
  and that the local part is not scoped. This is essentially the old function.
 2020-11-21 01:06:17 +01:00
Jakub Kądziołka
4e1d79081c Improve error message for negative shift arguments 2020-10-13 15:42:16 +02:00
Jakub Kądziołka
045a9e8b93 Report only one error when invalid shift has argument 
Not to mention that incrementing a variable in a loop is kinda dumb.
 2020-10-12 22:54:20 +02:00
Jakub Kądziołka
6767d11c23 utf8decoder: Use byte-sized byte argument 
This prevents passing a negative value out of a signed char by accident.
Also renders some casts in the code superfluous.
 2020-10-12 01:22:09 +02:00
ISSOtm
2dd9015dc6 Remove two stale variables from parser.y 
They were made useless with the lexer rewrite
 2020-10-12 00:52:12 +02:00
ISSOtm
01637768cf Rename asmy to more explicit parser 
This should make the purpose of that file clearer to newcomers
 2020-10-11 21:03:41 +02:00