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>
62 lines
3.5 KiB
Plaintext
62 lines
3.5 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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fn F(n: i32) {
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// Type operators and unary operators are lower precedence than `as`.
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-n as const i32;
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&n as i32*;
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// `as` is lower precedence than relational comparisons and logical operators.
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if (1 as i32 < 2 as i32 and true as bool and false as bool) {}
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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: 'Name', text: 'n'},
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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: 'ParameterList', text: ')', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
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// CHECK:STDOUT: {kind: 'PrefixOperator', text: '-', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'PrefixOperator', text: 'const', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
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// CHECK:STDOUT: {kind: 'PrefixOperator', text: '&', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
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// CHECK:STDOUT: {kind: 'IfConditionStart', text: '('},
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// CHECK:STDOUT: {kind: 'Literal', text: '1'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'Literal', text: '2'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: '<', subtree_size: 7},
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// CHECK:STDOUT: {kind: 'ShortCircuitOperand', text: 'and', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'Literal', text: 'true'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'bool'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'and', subtree_size: 12},
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// CHECK:STDOUT: {kind: 'ShortCircuitOperand', text: 'and', subtree_size: 13},
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// CHECK:STDOUT: {kind: 'Literal', text: 'false'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'bool'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'and', subtree_size: 17},
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// CHECK:STDOUT: {kind: 'IfCondition', text: ')', subtree_size: 19},
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// CHECK:STDOUT: {kind: 'CodeBlockStart', text: '{'},
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// CHECK:STDOUT: {kind: 'CodeBlock', text: '}', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'IfStatement', text: 'if', subtree_size: 22},
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// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 43},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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