mirror of
https://github.com/carbon-language/carbon-lang.git
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Update precedence rules to match design. (#3081)
- 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>
This commit is contained in:
Richard Smith
co-authored by
Chandler Carruth
Chandler Carruth
parent
3cca175a57
commit
fc5a9541ce
@@ -0,0 +1,43 @@
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// 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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var n: i32;
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fn F() -> if true then i32 else i32* {
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return if true then n else &n;
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}
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// CHECK:STDOUT: [
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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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: 'VariableDeclaration', text: ';', subtree_size: 5},
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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: 'Literal', text: 'true'},
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// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', 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: 'IfExpressionElse', text: 'else', subtree_size: 7},
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// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 13},
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// CHECK:STDOUT: {kind: 'ReturnStatementStart', text: 'return'},
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// CHECK:STDOUT: {kind: 'Literal', text: 'true'},
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// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
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// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', subtree_size: 2},
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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: 'IfExpressionElse', text: 'else', subtree_size: 7},
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// CHECK:STDOUT: {kind: 'ReturnStatement', text: ';', subtree_size: 9},
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// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 23},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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@@ -0,0 +1,97 @@
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// 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 = 0;
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var b: i32 = 1;
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a = b;
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a *= b;
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a /= b;
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a += b;
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a -= b;
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a %= b;
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a &= b;
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a |= b;
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a ^= b;
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a <<= b;
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a >>= b;
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++a;
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--a;
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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: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'Literal', text: '0'},
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// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 7},
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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: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'Literal', text: '1'},
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// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 7},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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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: 'ExpressionStatement', text: ';', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
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// CHECK:STDOUT: {kind: 'PrefixOperator', text: '++', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
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// CHECK:STDOUT: {kind: 'PrefixOperator', text: '--', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 70},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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@@ -0,0 +1,42 @@
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// 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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@@ -0,0 +1,39 @@
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// 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 n: i32 = 0;
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// TODO: It'd be nice to produce a custom diagnostic here.
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// CHECK:STDERR: fail_postincrement.carbon:[[@LINE+3]]:4: Expected `;` after expression statement.
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// CHECK:STDERR: n++;
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// CHECK:STDERR: ^
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n++;
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// CHECK:STDERR: fail_postincrement.carbon:[[@LINE+3]]:4: Expected `;` after expression statement.
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// CHECK:STDERR: n--;
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// CHECK:STDERR: ^
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n--;
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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: '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: 'VariableInitializer', text: '='},
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// CHECK:STDOUT: {kind: 'Literal', text: '0'},
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// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 7},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', has_error: yes, subtree_size: 2},
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// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', has_error: yes, subtree_size: 2},
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// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 17},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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@@ -0,0 +1,53 @@
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// 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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// No ordering between `not` and `as`.
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// CHECK:STDERR: fail_precedence_as.carbon:[[@LINE+3]]:12: Parentheses are required to disambiguate operator precedence.
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// CHECK:STDERR: not true as bool;
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// CHECK:STDERR: ^
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not true as bool;
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// No ordering between most binary operators and `as`.
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// CHECK:STDERR: fail_precedence_as.carbon:[[@LINE+3]]:9: Parentheses are required to disambiguate operator precedence.
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// CHECK:STDERR: 1 + 1 as i32;
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// CHECK:STDERR: ^
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1 + 1 as i32;
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// CHECK:STDERR: fail_precedence_as.carbon:[[@LINE+3]]:9: Parentheses are required to disambiguate operator precedence.
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// CHECK:STDERR: 5 % 2 as i32;
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// CHECK:STDERR: ^
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5 % 2 as i32;
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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: 'Literal', text: 'true'},
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// CHECK:STDOUT: {kind: 'PrefixOperator', text: 'not', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'Literal', text: 'bool'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', has_error: yes, subtree_size: 4},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'Literal', text: '1'},
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// CHECK:STDOUT: {kind: 'Literal', text: '1'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: '+', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', has_error: yes, subtree_size: 5},
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// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '5'},
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||||
// CHECK:STDOUT: {kind: 'Literal', text: '2'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '%', subtree_size: 3},
|
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// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
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||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', 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: 26},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
// CHECK:STDOUT: ]
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@@ -0,0 +1,61 @@
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
||||
// Exceptions. See /LICENSE for license information.
|
||||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||||
//
|
||||
// AUTOUPDATE
|
||||
|
||||
fn F() {
|
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var a: i32;
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// Assignment can only appear as an expression statement, not as a subexpression.
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// TODO: Produce the "can only be used as a complete statement" diagnostic in each of these cases.
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// CHECK:STDERR: fail_precedence_assign.carbon:[[@LINE+3]]:10: Expected `,` or `)`.
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// CHECK:STDERR: 1 + (a = 1);
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// CHECK:STDERR: ^
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1 + (a = 1);
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||||
// CHECK:STDERR: fail_precedence_assign.carbon:[[@LINE+6]]:19: Expected `else` after `if ... then ...`.
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// CHECK:STDERR: (if true then a += 1 else a /= 2);
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// CHECK:STDERR: ^
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// CHECK:STDERR: fail_precedence_assign.carbon:[[@LINE+3]]:19: Expected `,` or `)`.
|
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// CHECK:STDERR: (if true then a += 1 else a /= 2);
|
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// CHECK:STDERR: ^
|
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(if true then a += 1 else a /= 2);
|
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// CHECK:STDERR: fail_precedence_assign.carbon:[[@LINE+3]]:7: Operator `++` can only be used as a complete statement.
|
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// CHECK:STDERR: a + ++a;
|
||||
// CHECK:STDERR: ^
|
||||
a + ++a;
|
||||
}
|
||||
|
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// CHECK:STDOUT: [
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||||
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'F'},
|
||||
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '1'},
|
||||
// CHECK:STDOUT: {kind: 'ParenExpressionOrTupleLiteralStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'ParenExpression', text: ')', has_error: yes, subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '+', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'ParenExpressionOrTupleLiteralStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'true'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'InvalidParse', text: '+=', has_error: yes},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionElse', text: 'if', has_error: yes, subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'ParenExpression', text: ')', has_error: yes, subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 9},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '++', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '+', subtree_size: 4},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 31},
|
||||
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
// CHECK:STDOUT: ]
|
||||
+16
-13
@@ -5,6 +5,9 @@
|
||||
// AUTOUPDATE
|
||||
|
||||
fn F() {
|
||||
// CHECK:STDERR: fail_variety.carbon:[[@LINE+15]]:21: Operator `=` can only be used as a complete statement.
|
||||
// CHECK:STDERR: n = a * b + c * d = d * d << e & f - not g;
|
||||
// CHECK:STDERR: ^
|
||||
// CHECK:STDERR: fail_variety.carbon:[[@LINE+12]]:29: Parentheses are required to disambiguate operator precedence.
|
||||
// CHECK:STDERR: n = a * b + c * d = d * d << e & f - not g;
|
||||
// CHECK:STDERR: ^
|
||||
@@ -26,7 +29,7 @@ fn F() {
|
||||
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'b'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '*', subtree_size: 3},
|
||||
@@ -34,18 +37,18 @@ fn F() {
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'd'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '*', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '+', subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'd'},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'd'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '*', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'e'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '<<', has_error: yes, subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'f'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '&', has_error: yes, subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'g'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: 'not', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '-', has_error: yes, subtree_size: 10},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', subtree_size: 18},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', subtree_size: 20},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', subtree_size: 9},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'd'},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'd'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '*', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'e'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '<<', has_error: yes, subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'f'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '&', has_error: yes, subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'g'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: 'not', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '-', has_error: yes, subtree_size: 10},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', has_error: yes, subtree_size: 20},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 21},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 27},
|
||||
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
|
||||
@@ -5,7 +5,7 @@
|
||||
// AUTOUPDATE
|
||||
|
||||
fn F() {
|
||||
n++++;
|
||||
i32****;
|
||||
}
|
||||
|
||||
// CHECK:STDOUT: [
|
||||
@@ -14,10 +14,12 @@ fn F() {
|
||||
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '++', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '++', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 4},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 10},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 4},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 12},
|
||||
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
// CHECK:STDOUT: ]
|
||||
|
||||
@@ -0,0 +1,61 @@
|
||||
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
||||
// Exceptions. See /LICENSE for license information.
|
||||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||||
//
|
||||
// AUTOUPDATE
|
||||
|
||||
fn F(n: i32) {
|
||||
// Type operators and unary operators are lower precedence than `as`.
|
||||
-n as const i32;
|
||||
&n as i32*;
|
||||
|
||||
// `as` is lower precedence than relational comparisons and logical operators.
|
||||
if (1 as i32 < 2 as i32 and true as bool and false as bool) {}
|
||||
}
|
||||
|
||||
// CHECK:STDOUT: [
|
||||
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'F'},
|
||||
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'n'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '-', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: 'const', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'n'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '&', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'IfConditionStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '1'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '2'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '<', subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'ShortCircuitOperand', text: 'and', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'true'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'bool'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'and', subtree_size: 12},
|
||||
// CHECK:STDOUT: {kind: 'ShortCircuitOperand', text: 'and', subtree_size: 13},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'false'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'bool'},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'as', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: 'and', subtree_size: 17},
|
||||
// CHECK:STDOUT: {kind: 'IfCondition', text: ')', subtree_size: 19},
|
||||
// CHECK:STDOUT: {kind: 'CodeBlockStart', text: '{'},
|
||||
// CHECK:STDOUT: {kind: 'CodeBlock', text: '}', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'IfStatement', text: 'if', subtree_size: 22},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 43},
|
||||
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
// CHECK:STDOUT: ]
|
||||
@@ -0,0 +1,78 @@
|
||||
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
||||
// Exceptions. See /LICENSE for license information.
|
||||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||||
//
|
||||
// AUTOUPDATE
|
||||
|
||||
fn F(c: bool) {
|
||||
var a: i32;
|
||||
var b: i32;
|
||||
var p: i32*;
|
||||
*p = if c then 1 else 2;
|
||||
// These are valid to _parse_ even though rejected semantically.
|
||||
(if c then a else b) += if c then 1 else 2;
|
||||
++if c then a else b;
|
||||
}
|
||||
|
||||
// CHECK:STDOUT: [
|
||||
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'F'},
|
||||
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'c'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'bool'},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'b'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 5},
|
||||
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 4},
|
||||
// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'c'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '1'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '2'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionElse', text: 'else', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '=', subtree_size: 9},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 10},
|
||||
// CHECK:STDOUT: {kind: 'ParenExpressionOrTupleLiteralStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'c'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'b'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionElse', text: 'else', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'ParenExpression', text: ')', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'c'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '1'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: '2'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionElse', text: 'else', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '+=', subtree_size: 15},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 16},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'c'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionIf', text: 'if', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'a'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionThen', text: 'then', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'b'},
|
||||
// CHECK:STDOUT: {kind: 'IfExpressionElse', text: 'else', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '++', subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 59},
|
||||
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
// CHECK:STDOUT: ]
|
||||
@@ -0,0 +1,52 @@
|
||||
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
||||
// Exceptions. See /LICENSE for license information.
|
||||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||||
//
|
||||
// AUTOUPDATE
|
||||
|
||||
fn F(p: i32*) {
|
||||
// Numeric, bitwise, and bit-shift binary operators are lower precedence than
|
||||
// Numeric and bitwise unary operators, which are lower precedence than
|
||||
// dereference.
|
||||
-*p + ^*p;
|
||||
-*p | ^*p;
|
||||
-*p << ^*p;
|
||||
}
|
||||
|
||||
// CHECK:STDOUT: [
|
||||
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'F'},
|
||||
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
|
||||
// CHECK:STDOUT: {kind: 'Name', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
|
||||
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 4},
|
||||
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 6},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 9},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '-', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '^', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '+', subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '-', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '^', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '|', subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '-', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'NameExpression', text: 'p'},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '*', subtree_size: 2},
|
||||
// CHECK:STDOUT: {kind: 'PrefixOperator', text: '^', subtree_size: 3},
|
||||
// CHECK:STDOUT: {kind: 'InfixOperator', text: '<<', subtree_size: 7},
|
||||
// CHECK:STDOUT: {kind: 'ExpressionStatement', text: ';', subtree_size: 8},
|
||||
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 34},
|
||||
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
||||
// CHECK:STDOUT: ]
|
||||
Reference in New Issue
Block a user