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https://github.com/carbon-language/carbon-lang.git
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Burak EmirandDana Jansens
fec6ce2f9f
This implements proposal #2022, with changes from #3763 and leads answers on #6448 Detection of unusedness is happening in ~~`toolchain/check/dataflow_analysis.cpp`~~ next PR. See [here](https://github.com/burakemir/carbon-lang/tree/unused_pattern_bindings_p2022_impl_part2) for preview. ~~All test cases with unused bindings were updated in order to avoid polluting test output.~~ --------- Co-authored-by: Dana Jansens <danakj@orodu.net>
68 lines
3.9 KiB
Plaintext
68 lines
3.9 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/var/var.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/var/var.carbon
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var v: i32 = 0;
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var _: i32 = 0;
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var w: i32;
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fn F() {
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var s: str = "hello";
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var _: str = "anonymous";
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}
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// CHECK:STDOUT: - filename: var.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: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'v'},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'IntLiteral', text: '0'},
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// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'UnderscoreName', text: '_'},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'IntLiteral', text: '0'},
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// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'w'},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 6},
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// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'F'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 's'},
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// CHECK:STDOUT: {kind: 'StringTypeLiteral', text: 'str'},
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// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'StringLiteral', text: '"hello"'},
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// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'UnderscoreName', text: '_'},
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// CHECK:STDOUT: {kind: 'StringTypeLiteral', text: 'str'},
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// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'StringLiteral', text: '"anonymous"'},
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// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 22},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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