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d11ee4b2b1
This implements parsing of the [`observe`](https://docs.carbon-lang.dev/docs/design/generics/details.html#observing-a-type-implements-an-interface) declarations. - Added states and node kinds. - Added node categories. - Added a diagnostic for invalid keywords/operators. - Implemented parser state handlers. - Added structs to `typed_nodes.h`. - Added parser tests.
63 lines
2.9 KiB
Plaintext
63 lines
2.9 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/parse/testdata/observe/fail_missing_expr.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/parse/testdata/observe/fail_missing_expr.carbon
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// --- fail_missing_expr_after_observe.carbon
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// CHECK:STDERR: fail_missing_expr_after_observe.carbon:[[@LINE+4]]:9: error: expected expression [ExpectedExpr]
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// CHECK:STDERR: observe impls I;
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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observe impls I;
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// --- fail_missing_expr_after_impls.carbon
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// CHECK:STDERR: fail_missing_expr_after_impls.carbon:[[@LINE+4]]:17: error: expected expression [ExpectedExpr]
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// CHECK:STDERR: observe T impls ;
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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observe T impls ;
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// --- fail_missing_impls.carbon
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// CHECK:STDERR: fail_missing_impls.carbon:[[@LINE+4]]:11: error: observe should use `==` or `impls` operator [ExpectedObserveOperator]
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// CHECK:STDERR: observe T ;
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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observe T ;
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// CHECK:STDOUT: - filename: fail_missing_expr_after_observe.carbon
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// CHECK:STDOUT: parse_tree: [
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// CHECK:STDOUT: {kind: 'FileStart', text: ''},
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// CHECK:STDOUT: {kind: 'ObserveIntroducer', text: 'observe'},
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// CHECK:STDOUT: {kind: 'InvalidParse', text: 'impls', has_error: yes},
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// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'I'},
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// CHECK:STDOUT: {kind: 'ObserveImpls', text: 'impls', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'ObserveDecl', text: ';', has_error: yes, subtree_size: 5},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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// CHECK:STDOUT: - filename: fail_missing_expr_after_impls.carbon
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// CHECK:STDOUT: parse_tree: [
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// CHECK:STDOUT: {kind: 'FileStart', text: ''},
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// CHECK:STDOUT: {kind: 'ObserveIntroducer', text: 'observe'},
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// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'T'},
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// CHECK:STDOUT: {kind: 'InvalidParse', text: ';', has_error: yes},
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// CHECK:STDOUT: {kind: 'ObserveImpls', text: 'impls', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'ObserveDecl', text: ';', has_error: yes, subtree_size: 5},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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// CHECK:STDOUT: - filename: fail_missing_impls.carbon
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// CHECK:STDOUT: parse_tree: [
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// CHECK:STDOUT: {kind: 'FileStart', text: ''},
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// CHECK:STDOUT: {kind: 'ObserveIntroducer', text: 'observe'},
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// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'T'},
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// CHECK:STDOUT: {kind: 'ObserveDecl', text: ';', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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