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Basic support for parameterized interfaces. (#1220)

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To make this work, introduce impl bindings into scope immediately when type-checking. We may rely on their existence before we finish type-checking the enclosing pattern.
This commit is contained in:
Richard Smith
2022-04-29 12:42:15 -07:00
committed by GitHub
parent b9538129a2
commit 3b58a1bf48
15 changed files with 513 additions and 197 deletions
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executable_semantics/testdata/impl/fail_impl_as_not_constraint.carbon
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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: %{not} %{executable_semantics} %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
// RUN: %{not} %{executable_semantics} --parser_debug --trace_file=- %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: %{executable_semantics} %s
// CHECK: COMPILATION ERROR: {{.*}}/executable_semantics/testdata/impl/fail_impl_as_not_constraint.carbon:14: expected constraint after `as`, found value of type i32
package ExecutableSemanticsTest api;
external impl i32 as i32 {}
fn Main() -> i32 {
}
executable_semantics/testdata/impl/fail_impl_as_parameterized.carbon
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+20
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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: %{not} %{executable_semantics} %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
// RUN: %{not} %{executable_semantics} --parser_debug --trace_file=- %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: %{executable_semantics} %s
// CHECK: COMPILATION ERROR: {{.*}}/executable_semantics/testdata/impl/fail_impl_as_parameterized.carbon:17: missing arguments for parameterized interface
package ExecutableSemanticsTest api;
interface Vector(Scalar:! Type) {
}
external impl i32 as Vector {}
fn Main() -> i32 {
}
executable_semantics/testdata/impl/impl_as.carbon
Vendored
+17
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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: %{not} %{executable_semantics} %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
// RUN: %{not} %{executable_semantics} --parser_debug --trace_file=- %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: %{executable_semantics} %s
// CHECK: COMPILATION ERROR: {{.*}}/executable_semantics/testdata/impl/impl_as.carbon:14: expected constraint after `as`, found value of type i32
package ExecutableSemanticsTest api;
external impl i32 as i32 {}
fn Main() -> i32 {
}