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carbon-lang/executable_semantics/testdata/tuple/match_nested.carbon
T

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// RUN: %{executable_semantics} %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
// RUN: %{executable_semantics} --parser_debug --trace_file=- %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: %{executable_semantics} %s
// CHECK: result: 0
package ExecutableSemanticsTest api;
// Test matching of a tuple inside a tuple.
fn Main() -> i32 {
var t: auto = ((1, 2), (3, 4));
match (t) {
case ((a: auto, b: auto), c: auto) =>
return a - b + c[0] - c[1] + 2;
}
return 1;
}