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Rebecca Turner c6a89c1a16
libexpr: Support structured error classes
While preparing PRs like #9753, I've had to change error messages in
dozens of code paths. It would be nice if instead of

    EvalError("expected 'boolean' but found '%1%'", showType(v))

we could write

    TypeError(v, "boolean")

or similar. Then, changing the error message could be a mechanical
refactor with the compiler pointing out places the constructor needs to
be changed, rather than the error-prone process of grepping through the
codebase. Structured errors would also help prevent the "same" error
from having multiple slightly different messages, and could be a first
step towards error codes / an error index.

This PR reworks the exception infrastructure in `libexpr` to
support exception types with different constructor signatures than
`BaseError`. Actually refactoring the exceptions to use structured data
will come in a future PR (this one is big enough already, as it has to
touch every exception in `libexpr`).

The core design is in `eval-error.hh`. Generally, errors like this:

    state.error("'%s' is not a string", getAttrPathStr())
      .debugThrow<TypeError>()

are transformed like this:

    state.error<TypeError>("'%s' is not a string", getAttrPathStr())
      .debugThrow()

The type annotation has moved from `ErrorBuilder::debugThrow` to
`EvalState::error`.
2024-02-01 16:39:38 -08:00
.github build(deps): bump zeebe-io/backport-action from 2.4.0 to 2.4.1 2024-01-29 22:14:10 +00:00
config Run autoupdate 2021-06-01 11:42:38 +02:00
contrib function-trace: always show the trace 2019-09-18 23:23:21 +02:00
dep-patches Move dependency patches from top level into subdir 2024-01-17 13:13:54 -05:00
doc Merge pull request #9867 from hercules-ci/issue-912 2024-01-31 19:10:59 +01:00
m4 Add configure test to ensure GCC bug is fixed 2023-10-31 12:09:46 -04:00
maintainers maintainers/release-notes: Include changelog-d 2024-01-29 17:13:48 +01:00
misc Remove custom lowdown 2023-12-13 16:25:18 -05:00
mk Build Windows DLLs with -Wl,--export-all-symbols 2024-01-11 23:34:37 -05:00
perl Signer infrastructure: Prep for #9076 2024-01-03 16:13:55 -05:00
scripts installer: allow overriding of NIX_FIRST_BUILD_ID on darwin 2023-12-18 15:02:26 -08:00
src libexpr: Support structured error classes 2024-02-01 16:39:38 -08:00
tests libexpr: Support structured error classes 2024-02-01 16:39:38 -08:00
.clang-format Add clang format configuration 2024-01-08 19:46:38 +01:00
.dir-locals.el .dir-locals.el: Set c-block-comment-prefix 2020-07-10 11:21:06 +02:00
.editorconfig .editorconfig: Also affect Perl FFI xs file 2023-11-09 23:11:52 -05:00
.gitignore gitignore: add result-* 2024-01-09 18:36:09 +07:00
.version Bump version 2024-01-29 22:57:25 +01:00
configure.ac Link both gmock and gtest, not just gtest 2024-01-24 10:10:42 -05:00
CONTRIBUTING.md Merge pull request #9182 from fricklerhandwerk/popular-issues 2023-10-19 16:25:36 -04:00
COPYING * Change this to LGPL to keep the government happy. 2006-04-25 16:41:06 +00:00
default.nix add flake-compat to flake.nix and use sha256 in default.nix 2023-03-06 21:11:24 +01:00
docker.nix fix "add an option to include flake-registry..." 2023-05-16 14:35:31 +02:00
flake.lock flake.lock: Update 2024-01-15 08:04:46 -05:00
flake.nix maintainers/release-notes: Include changelog-d 2024-01-29 17:13:48 +01:00
local.mk Use positive source filtering for the standalone functional tests job 2023-10-09 08:29:27 -04:00
Makefile Build Windows DLLs with -Wl,--export-all-symbols 2024-01-11 23:34:37 -05:00
Makefile.config.in Simplify RapidCheck configure 2024-01-15 08:05:05 -05:00
package.nix maintainers/release-notes: Include changelog-d 2024-01-29 17:13:48 +01:00
precompiled-headers.h Config: Use nlohmann/json 2020-08-20 11:02:16 +02:00
README.md fix: Remove extra to from README.md (#9213) 2023-10-23 19:20:23 +02:00
shell.nix Remove url literals 2022-01-24 13:28:21 +01:00

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