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Improve parsing of invalid expressions. (#2726)

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This addresses crashes for infix operator expressions, but the approach should more generally yield balanced parsed trees.
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Jon Ross-Perkins
2023-03-31 20:51:59 -07:00
committed by GitHub
parent 7824e9618c
commit a905cdea30
8 changed files with 74 additions and 13 deletions
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toolchain/parser/testdata/return/fail_no_semi.carbon
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@@ -11,8 +11,9 @@
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ReturnStatementStart', text: 'return'},
// CHECK:STDOUT: {kind: 'ReturnStatement', text: 'return', has_error: yes, subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 8},
// CHECK:STDOUT: {kind: 'InvalidExpression', text: '}', has_error: yes},
// CHECK:STDOUT: {kind: 'ReturnStatement', text: 'return', has_error: yes, subtree_size: 3},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 9},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]