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0068c1375ca08a633c61c5c70201331a4fe15540
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958 Commits

Author SHA1 Message Date
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
ISSOtm
06ea7b20bf Reinstate "empty filename" assertion in __FILE__ callback 
This assertion was mentioned by a comment, but deleted for some reason.
 2021-05-21 17:20:47 -04:00
ISSOtm
a3c4652bfd Fix dead stores in charmap_ConvertNext 
Also cleanup / rearrange some of the function while we're at it.
 2021-05-21 17:20:47 -04:00
Rangi
5ad48851ed Allow error messages for subsequent syntax errors (#892) 
Fixes #891
 2021-05-21 17:04:27 -04:00
ISSOtm
e3b7339dd6 Save UNION stack when using PUSHS as well 
This allows using the latter within the former
 2021-05-21 09:47:27 +02:00
ISSOtm
69d7f84502 Reset LOAD offset when changing SECTIONs 
This would cause spurious section overflow messages, since the load offset
is added to the section's when computing its size.
 2021-05-21 09:37:17 +02:00
Rangi
23721694ea Comment that anonymous labels internally start with '!' 
`startsIdentifier` should not accept this character so
anonymous labels won't conflict with nonymous ones.
 2021-05-15 12:57:22 -04:00
ISSOtm
aa02958e18 Fix mandoc warnings 2021-05-15 12:23:05 +02:00
Rangi
6a5e2f439e Fix the STRFMT documentation in rgbasm(5) 
Fixes #886
 2021-05-09 17:23:57 -04:00
Rangi
5a38f6e148 rgbasm supports "Q16.16" fixed-point literals 
"Qm.n" signifies an m-bit two's complement integer
with n fractional bits.
<https://en.wikipedia.org/wiki/Q_(number_format)>
 2021-05-06 23:17:08 -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
75f1bcde31 Make SECTION size overflow non-fatal 
Fixes #538
 2021-05-04 15:34:20 +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
ISSOtm
75ce230dce Make UNION-related errors non-fatal 2021-05-03 10:57:14 +02:00
ISSOtm
1d01268249 Remove LOAD FRAGMENT 
It's very troublesome, with flaky semantics and a very restricted use space.
 2021-05-03 10:51:55 +02:00
ISSOtm
02cb5a0526 Avoid performing invalid actions on LOAD errors 
These are rejected because they could lead to incorrect behavior,
so then don't do it...
 2021-05-03 10:46:52 +02:00
Jakub Kądziołka
d360d03403 Enable address sanitizer in develop builds (#834) 
Co-authored-by: ISSOtm <eldredhabert0@gmail.com>
 2021-05-02 18:08:03 +02:00
Rangi
e9bfe849ad Allow OPT to toggle -h 2021-05-02 11:06:53 +02:00
Rangi
665eb916a2 OPT L acts like -L and *dis*ables optimizing LD to LDH 
Fixes #867
 2021-05-02 11:06:53 +02:00
ISSOtm
dcb8c69661 Fix UAF in lexer capture 
Fixes #689
 2021-05-02 03:24:18 +02:00
ISSOtm
38a9a613da Make data output outside of a SECTION non-fatal 2021-05-01 23:48:48 +02:00
Eldred Habert
21b59c4651 Reinstate PUSHS clearing the SECTION scope (#870) 
* Reinstate PUSHS clearing the SECTION scope

Otherwise you can use `PUSHS` to simulate the old `ds -21`, and possibly cause bugs

* Have PUSHS push LOAD block state as well

It does not make sense not to, and coud cause bugs.
 2021-05-01 23:30:09 +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
ee67f1039c Fix REDEF EQUS behavior 
Redefining an EQUS constant will now update its filename,
like redefining a SET/= constant.

Attempting to redefine as EQUS a non-EQUS constant will
print an appropriate error message.

This also standardizes on `sym` versus `symbol` as a
variable name (which pairs with `symName`).
 2021-04-28 12:11:26 -04:00
Rangi
d37aa93a7d Port some cleanup from the WIP 'strings' branch 
This is mostly variable renaming
 2021-04-28 11:58:56 -04:00
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
3fdf01c0f5 Resolve some TODO comments 
- `out_PushSection` should not set `currentSection` to NULL because
  PUSHS, PUSHC, and PUSHO consistently keep the current section,
  charmap, and options, even though the stack has been pushed.

- `Callback__FILE__` does not need to assert that `fileName` is not
  empty because `__FILE__`'s value is quoted, and can safely be empty.

- `YY_FATAL_ERROR` and `YYLMAX` are not needed since the lexer is
  not generated with flex.
 2021-04-26 15:52:30 -04:00
Rangi
e050803ed1 Use size_t for measuring nested depths 
Multiple functions involve tracking the current depth
of a nested structure (symbol expansions, interpolations,
REPT/FOR blocks, parentheses).
 2021-04-23 14:28:10 +02:00
Rangi
27f38770d4 Parentheses in macro args prevent commas from starting new arguments 
This is similar to C's behavior, and convenient for passing
function calls as single values, like `MUL(3.0, 4.0)` or
`STRSUB("str", 2, 1)`.

Fixes #704
 2021-04-23 14:28:10 +02:00
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
e596dbfc80 Make failed macro arg expansions non-fatal 
Expanding empty strings is valid but pointless;
macro args already skipped doing so, now other
`beginExpansion` calls do too.

This also fixes failed interpolations (which were
already non-fatal) to continue reading characters,
not evaluate to their initial '{' character.
 2021-04-22 09:59:02 +02:00
Rangi
c3e27217dd More specific "Symbol name too long" error messages 
Identifiers, {interpolations} and \<macroArgs> are distinct
 2021-04-20 17:14:21 +02:00
Rangi
fe3521c7a4 Switch from parentheses to angle brackets 
`\(` is more likely to be a valid escape sequence in the
future (as is `\[`) and `\{` is already taken.
 2021-04-20 17:14:21 +02:00
Rangi
7a314e7aff Support numeric symbol names in \(parentheses) 
For example, \(_NARG) will get the last argument
 2021-04-20 17:14:21 +02:00
Rangi
637bbbdf43 Support multi-digit macro arguments in parentheses 
This allows access to arguments past \9 without using 'shift'
 2021-04-20 17:14:21 +02:00
Rangi
8230e8165c Eliminate isAtEOF by changing yylex control flow 
`yylex` calls `yywrap` at the beginning of the next call, after it
has set `lexerState->lastToken` to `T_EOB`.
 2021-04-20 17:10:08 +02:00
Rangi
a727a0f81f Capture termination status is equivalent to not having reached EOF 
This avoids the need for a separate `terminated` flag
 2021-04-20 17:10:08 +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
be2572edca Track nested interpolation depth even outside string literals 
Fixes #837
 2021-04-20 09:37:29 -04:00
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
Rangi
459773b3f0 Update some whitespace after Hungarian prefixes were removed 
Keep the parameter alignment and 100-char line limit
 2021-04-19 16:47:39 -04:00
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
5108c5643c Let charmap_ConvertNext advance its output pointer 2021-04-17 18:18:34 -04:00
Rangi
2005ed1df9 Implement CHARLEN and CHARSUB 
Fixes #786
 2021-04-17 18:18:34 -04:00
Rangi
d43408f4f3 Allow OPT to modify -W 
Warning flags are processed individually;
PUSHO and POPO (re)store all the warning states.
 2021-04-18 00:11:18 +02:00