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path: root/compiler/utils/StringBuffer.hs
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* Add hPutStringBuffer utilityDaniel Gröber2019-05-291-0/+6
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* Add PlainPanic for throwing exceptions without depending on pprintMichael Sloan2019-05-241-1/+1
| | | | | | | | | | | | | | | | | | | | | This commit splits out a subset of GhcException which do not depend on pretty printing (SDoc), as a new datatype called PlainGhcException. These exceptions can be caught as GhcException, because 'fromException' will convert them. The motivation for this change is that that the Panic module transitively depends on many modules, primarily due to pretty printing code. It's on the order of about 130 modules. This large set of dependencies has a few implications: 1. To avoid cycles / use of boot files, these dependencies cannot throw GhcException. 2. There are some utility modules that use UnboxedTuples and also use `panic`. This means that when loading GHC into GHCi, about 130 additional modules would need to be compiled instead of interpreted. Splitting the non-pprint exception throwing into a new module resolves this issue. See #13101
* Properly escape character literals in HaddocksAlec Theriault2019-02-151-4/+4
| | | | | | | | Character literals in Haddock should not be written as plain `'\n'` since single quotes are for linking identifiers. Besides, since we want the character literal to be monospaced, we really should use `@\'\\n\'@`. [skip ci]
* Implement underscores in numeric literals (NumericUnderscores extension)Takenobu Tani2018-01-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the proposal of underscores in numeric literals. Underscores in numeric literals are simply ignored. The specification of the feature is available here: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/000 9-numeric-underscores.rst For a discussion of the various choices: https://github.com/ghc-proposals/ghc-proposals/pull/76 Implementation detail: * Added dynamic flag * `NumericUnderscores` extension flag is added for this feature. * Alex "Regular expression macros" in Lexer.x * Add `@numspc` (numeric spacer) macro to represent multiple underscores. * Modify `@decimal`, `@decimal`, `@binary`, `@octal`, `@hexadecimal`, `@exponent`, and `@bin_exponent` macros to include `@numspc`. * Alex "Rules" in Lexer.x * To be simpler, we have only the definitions with underscores. And then we have a separate function (`tok_integral` and `tok_frac`) that validates the literals. * Validation functions in Lexer.x * `tok_integral` and `tok_frac` functions validate whether contain underscores or not. If `NumericUnderscores` extensions are not enabled, check that there are no underscores. * `tok_frac` function is created by merging `strtoken` and `init_strtoken`. * `init_strtoken` is deleted. Because it is no longer used. * Remove underscores from target literal string * `parseUnsignedInteger`, `readRational__`, and `readHexRational} use the customized `span'` function to remove underscores. * Added Testcase * testcase for NumericUnderscores enabled. NumericUnderscores0.hs and NumericUnderscores1.hs * testcase for NumericUnderscores disabled. NoNumericUnderscores0.hs and NoNumericUnderscores1.hs * testcase to invalid pattern for NumericUnderscores enabled. NumericUnderscoresFail0.hs and NumericUnderscoresFail1.hs Test Plan: `validate` including the above testcase Reviewers: goldfire, bgamari Reviewed By: bgamari Subscribers: carter, rwbarton, thomie GHC Trac Issues: #14473 Differential Revision: https://phabricator.haskell.org/D4235
* Change `OPTIONS_GHC -O` to `OPTIONS_GHC -O2`Douglas Wilson2017-11-091-1/+1
| | | | | | | | | | | | | | | These pragmas were having the perverse effect of having these performance critical modules be LESS optimized in builds with -O2. Test Plan: Check on gipedia whether this is worthwhile. Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: rwbarton, thomie Differential Revision: https://phabricator.haskell.org/D4156
* compiler: introduce custom "GhcPrelude" PreludeHerbert Valerio Riedel2017-09-191-0/+2
| | | | | | | | | | | | | | | | | | This switches the compiler/ component to get compiled with -XNoImplicitPrelude and a `import GhcPrelude` is inserted in all modules. This is motivated by the upcoming "Prelude" re-export of `Semigroup((<>))` which would cause lots of name clashes in every modulewhich imports also `Outputable` Reviewers: austin, goldfire, bgamari, alanz, simonmar Reviewed By: bgamari Subscribers: goldfire, rwbarton, thomie, mpickering, bgamari Differential Revision: https://phabricator.haskell.org/D3989
* Caret diag.: Avoid decoding whole module if only specific line is neededalexbiehl2017-04-171-1/+39
| | | | | | | | | | | | | | | | | Before we were decoding the whole file to get to the desired line. This patch introduces a fast function which searches a StringBuffer for the desired line so we only need to utf8 decode a little portion. This is especially interesting if we have big modules with lots of warnings. Reviewers: austin, bgamari, Rufflewind, trofi Reviewed By: Rufflewind, trofi Subscribers: rwbarton, thomie Differential Revision: https://phabricator.haskell.org/D3440
* utils: Lazily decode UTF8 stringsBen Gamari2017-04-171-3/+1
| | | | | | | | | | Reviewers: austin, hvr Subscribers: rwbarton, thomie GHC Trac Issues: #13527 Differential Revision: https://phabricator.haskell.org/D3442
* Fixed error messages for RecursiveDo (#8501)Rupert Horlick2017-03-291-0/+15
| | | | | | | | | | | | | | | | | Changes in a few different places to catch several different types of error related to RecursiveDo Signed-off-by: Rupert Horlick <ruperthorlick@gmail.com> Test Plan: Three test cases, with further tests in comments Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D3271
* Improve StringBuffer and FastString docsPhil Ruffwind2016-12-171-4/+38
| | | | | | | | | | | | | | | This area of code contains a lot of unsafe functionality, so it might be worth documenting to reduce the risk of misuse. Test Plan: inspection Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2872
* Drop pre-AMP compatibility CPP conditionalsHerbert Valerio Riedel2015-12-311-4/+0
| | | | | | | | | | | | Since GHC 8.1/8.2 only needs to be bootstrap-able by GHC 7.10 and GHC 8.0 (and GHC 8.2), we can now finally drop all that pre-AMP compatibility CPP-mess for good! Reviewers: austin, goldfire, bgamari Subscribers: goldfire, thomie, erikd Differential Revision: https://phabricator.haskell.org/D1724
* Skip a possible BOM in utf8 encodingJoachim Breitner2015-09-251-3/+7
| | | | | | | | and not the system locale, which might be something else. This fixes bug #10907. A test is added, but less useful than it could be until task #10909 is done. Differential Revision: D1274
* Refactor: delete most of the module FastTypesThomas Miedema2015-08-211-20/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverses some of the work done in #1405, and goes back to the assumption that the bootstrap compiler understands GHC-haskell. In particular: * use MagicHash instead of _ILIT and _CLIT * pattern matching on I# if possible, instead of using iUnbox unnecessarily * use Int#/Char#/Addr# instead of the following type synonyms: - type FastInt = Int# - type FastChar = Char# - type FastPtr a = Addr# * inline the following functions: - iBox = I# - cBox = C# - fastChr = chr# - fastOrd = ord# - eqFastChar = eqChar# - shiftLFastInt = uncheckedIShiftL# - shiftR_FastInt = uncheckedIShiftRL# - shiftRLFastInt = uncheckedIShiftRL# * delete the following unused functions: - minFastInt - maxFastInt - uncheckedIShiftRA# - castFastPtr - panicDocFastInt and pprPanicFastInt * rename panicFastInt back to panic# These functions remain, since they actually do something: * iUnbox * bitAndFastInt * bitOrFastInt Test Plan: validate Reviewers: austin, bgamari Subscribers: rwbarton Differential Revision: https://phabricator.haskell.org/D1141 GHC Trac Issues: #1405
* compiler: de-lhs utils/Austin Seipp2014-12-031-0/+257
Signed-off-by: Austin Seipp <austin@well-typed.com>
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