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106ad30e5a02f60037fd1d99d26866b4820a8197
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259 Commits

Author SHA1 Message Date
Rangi
106ad30e5a Allow fixed-point constants to have unsigned range (#1084) 
For example with Q.4, $F0 is 15.0, which no longer warns
 2022-10-01 23:32:34 +02:00
Rangi
08545643cf Only define @ and _NARG when they have values (#1073) 
Fixes #1069

Co-authored-by: Eldred Habert <eldredhabert0@gmail.com>
 2022-10-01 01:04:03 +02:00
Rangi
98a6dffbca Implement opt Q for fixed-point precision, and q literals (e.g. 12.34q8) (#958) 
Fixes #957

Co-authored-by: ISSOtm <eldredhabert0@gmail.com>
 2022-09-05 00:47:32 +02:00
Rangi
fa13611bbf Make comments more consistent 
- Changes most `/* comments */` to `// comments`
- Changes `/**` block comments consistently to `/*`
- Adds consistent license comments to all files

Also renames `T_POP_SET` to `T_Z80_SET`
 2022-08-30 07:51:32 +02:00
Rangi
7a2ee26792 rgbasm -r sets the maximum recursion depth (#1026) 
Previously it set the minimum failure depth (off by one)

Fixes #978
 2022-08-28 15:21:29 -04:00
Rangi
425339ccf6 Implement FMOD function for fixed-point modulo 
Fixes #1021
 2022-08-28 21:21:10 +02:00
ISSOtm
d51ab35203 Trim macro arg whitespace after line continuations 2022-06-09 00:07:27 +02:00
ISSOtm
b037d54f64 Remove deprecated symbols 
Fixes #896
 2022-05-21 21:45:06 +02:00
ISSOtm
7dd8ba37f1 Allow changing recursion depth limit at runtime 2022-02-05 20:32:56 +01:00
ISSOtm
eb5af70d79 Add unsigned right shift operator 2022-02-05 20:12:15 +01:00
Rangi
d073cffa74 Don't use new as a variable name 
It conflicts with the C++ keyword
 2021-11-24 22:48:28 -05:00
Rangi
8435a29c4e Turn the readChars macro into a readInternal function 
This macro was only used twice, and the second usage did
some unnecessary work.
 2021-11-25 00:26:23 +01:00
Rangi
aac839f389 Remove dbgPrint and TRACE_LEXER support 
I have not found `TRACE_LEXER` to be useful in debugging
actual lexer issues.
 2021-11-22 23:49:59 +01:00
Rangi
ec6d63bce3 Allow underscores in gfx literals (#951) 
Fixes #950
 2021-11-21 16:18:23 -05:00
Rangi
cedfd2582a Move more statements into for loop clauses 2021-11-19 22:55:20 -05:00
Rangi
c7322258fc Refactor readGfxConstant for consistency, and edit warning message 2021-11-19 21:36:56 -05:00
Rangi
8e2a164a32 Implement compound assignment operators for mutable constants 
Fixes #943
 2021-11-19 08:50:00 +01:00
Rangi
efccf6c931 A few stylistic tweaks 
- `goto free_romx` -> the more typical `goto cleanup`
- `goto fail` -> the more typical `goto finish`
- Remove a redundant `todo` variable
 2021-11-17 23:51:40 -05:00
Rangi
438963fb24 Remove unused #include "extern/utf8decoder.h" (#940) 
Fixes #937
 2021-11-12 23:37:19 +01:00
ISSOtm
1a07391a97 Introduce ARRAY_SIZE macro 
Checked by `checkpatch`, and you know what? Not a bad thing
See https://github.com/gbdev/rgbds/pull/931#discussion_r738856724
 2021-10-31 07:53:33 +01:00
Rangi
4a73eb56ea Make peek() tail recursive instead of using goto 
Compilation is identical with `gcc` or `clang`, -O3` or `-O2`
 2021-08-18 01:30:47 +02:00
Rangi
03bb510588 endCapture shouldn't handle lexerState->atLineStart 
`startCapture` did not initialize `lexerState->atLineStart`;
its final value is a consequence of the separate but similar
behaviors within `lexer_CaptureRept` and `lexer_CaptureMacroBody`.
 2021-07-04 18:31:46 -04:00
Rangi
695dfe9dbd Add missing file line-continuation-string.asm 
Also make some minor formatting corrections
 2021-07-04 16:12:34 -04:00
Rangi
9782f7d942 Factor out endCapture to go with startCapture (#904) 
This also refactors `startCapture` to modify the
capture body as an argument.
 2021-07-04 16:08:59 -04:00
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
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
dcb8c69661 Fix UAF in lexer capture 
Fixes #689
 2021-05-02 03:24:18 +02:00
Rangi
d37aa93a7d Port some cleanup from the WIP 'strings' branch 
This is mostly variable renaming
 2021-04-28 11:58:56 -04:00
Rangi
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
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
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
9923fa3eee Fix expansions that start from the end of another expansion (#839) 
Do not free an expansion until its offset is *past* its size.
This means potentially freeing a nested stack of expansions
all at once.

Fixes #696
 2021-04-17 13:14:40 -04:00
Rangi
c755fa3469 readIdentifier does not process characters that get truncated 
Previously a '.' could be past the truncation limit but still
cause the identifier to be marked as local, violating an
assertion in `sym_AddLocalLabel`.

Fixes #832
 2021-04-16 21:15:01 -04:00
Rangi
e78a1d5bfd readInterpolation is limited by nMaxRecursionDepth 
Fixes #837
 2021-04-16 16:10:46 -04:00
Rangi
5c852c7651 Store the nested expansions starting from the deepest one (#829) 
This shortens the lexer by 100 lines and simplifies
access to expansion contents, since it usually needs the
deepest one, not the top-level one.

Fixes #813
 2021-04-16 09:54:13 -04:00
Rangi
6be3584467 LexerState's 'size' and 'offset' for mmapped files are unsigned 
These were using signed 'off_t' because that is the type of
'st_size' from 'stat()', but neither one can be negative.
 2021-04-16 10:23:37 +02:00
Rangi
8c90d9d2d7 Get rid of skip in struct Expansion 
This was only used to skip the two macro arg characters,
but shiftChar() can skip them before the expansion.
 2021-04-16 10:23:37 +02:00