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Jon Ross-Perkins
91f0c23124
Building on #3636 which handles the general import case, add special casing for namespaces. Namespaces can be combined cross-IR, so it's a little more complex. The implementation adds import_id to the Namespace instruction as a reference to find the original using the normal structure. This is achieved by moving the name_id to NameScope to free up space. --- I considered a few alternatives... I considered adding import_id to NameScope, but: 1. It's more consistent with things such as Function or Class that provide name_id on the info object rather than the instruction. 2. I thought it more likely that there would be more NameScope cases that might want a name_id rather than the import_id, since ImportRef will typically be used. I considered putting the import source (cross-ref IR id + inst id) on the NameScope versus a separate ImportRef, which seems like the strongest argument towards the NameScope approach because it removes an instruction. That just felt inconsistent though, and the overhead of instruction-per-imported-namespace should be low (theoretically few namespaces should be used). Plus I feel a bit odd adding two generally-unused ids to NameScope. A specialized Namespace structure could also have been created to store the import_id, but that would add an indirection to the NameScope.
36 lines
1.7 KiB
Plaintext
36 lines
1.7 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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// AUTOUPDATE
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// CHECK:STDERR: fail_out_of_bound.carbon:[[@LINE+3]]:19: ERROR: Cannot initialize array of 1 element(s) from 3 initializer(s).
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// CHECK:STDERR: var a: [i32; 1] = (1, 2, 3);
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// CHECK:STDERR: ^~~~~~~~~
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var a: [i32; 1] = (1, 2, 3);
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// CHECK:STDOUT: --- fail_out_of_bound.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.2: type = array_type %.1, i32 [template]
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// CHECK:STDOUT: %.3: type = ptr_type [i32; 1] [template]
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// CHECK:STDOUT: %.4: i32 = int_literal 2 [template]
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// CHECK:STDOUT: %.5: i32 = int_literal 3 [template]
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// CHECK:STDOUT: %.6: type = tuple_type (i32, i32, i32) [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace {.a = %a} [template]
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// CHECK:STDOUT: %.loc10_14: i32 = int_literal 1 [template = constants.%.1]
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// CHECK:STDOUT: %.loc10_15: type = array_type %.loc10_14, i32 [template = constants.%.2]
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// CHECK:STDOUT: %a.var: ref [i32; 1] = var a
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// CHECK:STDOUT: %a: ref [i32; 1] = bind_name a, %a.var
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// CHECK:STDOUT: %.loc10_20: i32 = int_literal 1 [template = constants.%.1]
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// CHECK:STDOUT: %.loc10_23: i32 = int_literal 2 [template = constants.%.4]
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// CHECK:STDOUT: %.loc10_26: i32 = int_literal 3 [template = constants.%.5]
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// CHECK:STDOUT: %.loc10_27: (i32, i32, i32) = tuple_literal (%.loc10_20, %.loc10_23, %.loc10_26)
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// CHECK:STDOUT: assign %a.var, <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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