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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
41ed82e033
Add a `Core.String` class to the prelude representing a string view, and rename the `String` keyword to `str` and make it evaluate to `Core.String`. `Core.String` is represented as a pair of a pointer to a character (actually, to the first character of a string, but we don't have a way of modeling that yet) and a size (which should be pointer-width, but is currently always a `u64` as we don't have a `usize` equivalent yet). `Core.String` values are generated directly by the toolchain for string literal expressions. This follows the direction established at the recent summit, but the design implemented here has not been through the proposal process yet.
47 lines
2.0 KiB
Plaintext
47 lines
2.0 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// This test is validating that the delayed error flush doesn't break on string
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// lifetimes.
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//
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// ARGS: --include-diagnostic-kind compile --no-prelude-import %s
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/driver/testdata/fail_flush_errors.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/driver/testdata/fail_flush_errors.carbon
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fn F() {
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// Create diagnostics containing string references, and trigger reallocation
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// of the string table.
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared1` not found [NameNotFound]
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// CHECK:STDERR: undeclared1;
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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undeclared1;
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// Add the name into the string table from the tokenized buffer's string
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// literal storage. Use a hex escape to ensure that the tokenized buffer
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// allocates separate storage for the result.
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: `Core.String` implicitly referenced here, but package `Core` not found [CoreNotFound]
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// CHECK:STDERR: "undec\x6Cared2";
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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"undec\x6Cared2";
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared2` not found [NameNotFound]
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// CHECK:STDERR: undeclared2;
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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undeclared2;
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// Add the name into the string table via a declaration rather than an expression.
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if (true) { let undeclared3:! () = (); }
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared3` not found [NameNotFound]
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// CHECK:STDERR: undeclared3;
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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undeclared3;
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}
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