mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 22:02:41 +01:00
Dana Jansensandzygoloid
24bde46181
In line with the proposal in #4682, this changes the array syntax to be array(T, N). `array` is a builtin keyword which must be followed by parens containing two expressions and a separating comma. The array type expression is still fully builtin, it does not forward to a Core.Array library type yet. It merely adds the `ArrayType` instruction, as was done with the previous syntax. Followup work will change the instruction to reference to Core.Array, once the library type exists and can be used directly. --------- Co-authored-by: zygoloid <richard@metafoo.co.uk>
87 lines
4.9 KiB
Plaintext
87 lines
4.9 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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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/array/generic_empty.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/check/testdata/array/generic_empty.carbon
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fn G(T:! type) {
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// We can initialize this without knowing T.
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var arr: array(T, 0) = ();
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}
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// CHECK:STDOUT: --- generic_empty.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %T: type = bind_symbolic_name T, 0 [symbolic]
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// CHECK:STDOUT: %T.patt: type = symbolic_binding_pattern T, 0 [symbolic]
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// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
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// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
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// CHECK:STDOUT: %G: %G.type = struct_value () [concrete]
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// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete]
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// CHECK:STDOUT: %array_type: type = array_type %int_0, %T [symbolic]
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// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %array_type [symbolic]
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// CHECK:STDOUT: %array: %array_type = tuple_value () [symbolic]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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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 [concrete] {
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .G = %G.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {
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// CHECK:STDOUT: %T.patt.loc11_6.1: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc11_6.2 (constants.%T.patt)]
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// CHECK:STDOUT: %T.param_patt: type = value_param_pattern %T.patt.loc11_6.1, runtime_param<none> [symbolic = %T.patt.loc11_6.2 (constants.%T.patt)]
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %T.param: type = value_param runtime_param<none>
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// CHECK:STDOUT: %T.loc11_6.1: type = bind_symbolic_name T, 0, %T.param [symbolic = %T.loc11_6.2 (constants.%T)]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: generic fn @G(%T.loc11_6.1: type) {
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// CHECK:STDOUT: %T.loc11_6.2: type = bind_symbolic_name T, 0 [symbolic = %T.loc11_6.2 (constants.%T)]
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// CHECK:STDOUT: %T.patt.loc11_6.2: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc11_6.2 (constants.%T.patt)]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !definition:
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// CHECK:STDOUT: %array_type.loc13_22.2: type = array_type constants.%int_0, @G.%T.loc11_6.2 (%T) [symbolic = %array_type.loc13_22.2 (constants.%array_type)]
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// CHECK:STDOUT: %require_complete: <witness> = require_complete_type @G.%array_type.loc13_22.2 (%array_type) [symbolic = %require_complete (constants.%require_complete)]
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// CHECK:STDOUT: %array: @G.%array_type.loc13_22.2 (%array_type) = tuple_value () [symbolic = %array (constants.%array)]
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn(%T.param_patt: type) {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %arr.patt: @G.%array_type.loc13_22.2 (%array_type) = binding_pattern arr
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// CHECK:STDOUT: %.loc13_3.1: @G.%array_type.loc13_22.2 (%array_type) = var_pattern %arr.patt
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %arr.var: ref @G.%array_type.loc13_22.2 (%array_type) = var arr
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// CHECK:STDOUT: %.loc13_27.1: %empty_tuple.type = tuple_literal ()
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// CHECK:STDOUT: %.loc13_27.2: init @G.%array_type.loc13_22.2 (%array_type) = array_init () to %arr.var [symbolic = %array (constants.%array)]
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// CHECK:STDOUT: %.loc13_3.2: init @G.%array_type.loc13_22.2 (%array_type) = converted %.loc13_27.1, %.loc13_27.2 [symbolic = %array (constants.%array)]
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// CHECK:STDOUT: assign %arr.var, %.loc13_3.2
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// CHECK:STDOUT: %.loc13_22: type = splice_block %array_type.loc13_22.1 [symbolic = %array_type.loc13_22.2 (constants.%array_type)] {
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// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc11_6.1 [symbolic = %T.loc11_6.2 (constants.%T)]
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// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
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// CHECK:STDOUT: %array_type.loc13_22.1: type = array_type %int_0, %T [symbolic = %array_type.loc13_22.2 (constants.%array_type)]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %arr: ref @G.%array_type.loc13_22.2 (%array_type) = bind_name arr, %arr.var
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: specific @G(constants.%T) {
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// CHECK:STDOUT: %T.loc11_6.2 => constants.%T
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// CHECK:STDOUT: %T.patt.loc11_6.2 => constants.%T
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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