mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-28 17:24:57 +01:00
Burak Emir
80639a02f0
This adds the necessary parser infrastructure to recognize and parse lambda expressions in Carbon. Key changes: - Added and Parse Node Kinds. - Updated to use to accommodate the growing number of node kinds. - Implemented parser states and handlers for lambda syntax ( or ). - Added structure to . - Added diagnostics for missing lambda bodies. - Added a stub in phase to defer semantic analysis using . - Added parser tests for lambdas.
44 lines
2.5 KiB
Plaintext
44 lines
2.5 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/function/terse.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/function/terse.carbon
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fn F(x: i32) => x;
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fn G(x: i32) -> i32 => x;
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// CHECK:STDOUT: - filename: terse.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: '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: 'IdentifierNameNotBeforeParams', text: 'x'},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'LetBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '=>', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'TerseBodyArrow', text: '=>'},
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// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
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// CHECK:STDOUT: {kind: 'FunctionTerseDefinition', text: ';', subtree_size: 11},
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// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'G'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'x'},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'LetBindingPattern', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '=>', subtree_size: 10},
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// CHECK:STDOUT: {kind: 'TerseBodyArrow', text: '=>'},
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// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'x'},
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// CHECK:STDOUT: {kind: 'FunctionTerseDefinition', text: ';', subtree_size: 13},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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