mirror of
https://github.com/carbon-language/carbon-lang.git
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Richard SmithandChandler Carruth
fc5a9541ce
- Only allow assignment at the top level in an expression statement. - Allow both negation and complement as subexpressions of both bitwise and numeric operators. - Remove parsing support for postincrement and postdecrement. - Add parsing support for `as` operator. - Use the same ambient precedence for types and non-type expressions. --------- Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
43 lines
2.0 KiB
Plaintext
43 lines
2.0 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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fn F() {
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var a: i32;
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var b: i32;
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// TODO: Produce a custom diagnostic for this.
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// CHECK:STDERR: fail_chained_assign.carbon:[[@LINE+3]]:9: Operator `=` can only be used as a complete statement.
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// CHECK:STDERR: a = b = 1;
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// CHECK:STDERR: ^
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a = b = 1;
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}
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// CHECK:STDOUT: [
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// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'Name', text: 'F'},
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// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
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// CHECK:STDOUT: {kind: 'ParameterList', 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: 'Name', text: 'a'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'Name', text: 'b'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'b'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'Literal', text: '1'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', has_error: yes, subtree_size: 5},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
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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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