Switch custom error stream output to diagnostic (#4846)

This switches most error printing to use diagnostics instead of direct
stream writes, even when not a specific file diagnostic. I'm allowing
empty filenames for this use-case.

This allows a little more specific testing to validate coverage of
output using the diagnostic coverage test. I'm adding a few tests to
cover things that weren't previously tested.

Separately, this also forces a little more standardization in format...
considering how changes like #4568 show effort being spent to _mirror_
diagnostic style, my thought is now to just use diagnostic code where
possible.

Note this also allows incrementally better testing of the language
server; I'm changing the crash fix from #4847 in favor of diagnostic
testing.

---------

Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
This commit is contained in:
Jon Ross-Perkins
2025-01-30 01:58:07 +00:00
committed by GitHub
co-authored by Chandler Carruth
parent 7d2958ad37
commit 7befe2ce9f
57 changed files with 379 additions and 174 deletions
+4 -4
View File
@@ -2,7 +2,7 @@
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// ARGS: compile --no-prelude-import %s
// ARGS: --include-diagnostic-kind compile --no-prelude-import %s
//
// AUTOUPDATE
// TIP: To test this file alone, run:
@@ -13,7 +13,7 @@
fn F() {
// Create diagnostics containing string references, and trigger reallocation
// of the string table.
// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared1` not found
// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared1` not found [NameNotFound]
// CHECK:STDERR: undeclared1;
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR:
@@ -23,7 +23,7 @@ fn F() {
// literal storage. Use a hex escape to ensure that the tokenized buffer
// allocates separate storage for the result.
"undec\x6Cared2";
// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared2` not found
// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared2` not found [NameNotFound]
// CHECK:STDERR: undeclared2;
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR:
@@ -31,7 +31,7 @@ fn F() {
// Add the name into the string table via a declaration rather than an expression.
if (true) { var undeclared3: () = (); }
// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared3` not found
// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared3` not found [NameNotFound]
// CHECK:STDERR: undeclared3;
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR: