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Document confusing code
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@ -41,7 +41,7 @@ dependencies:
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dev_dependencies:
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test: ^1.6.0
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build_runner: ^1.6.7
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build_test: ^1.3.4
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build_test: ^1.3.6
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json_serializable: ^4.0.0-nullsafety
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executables:
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@ -24,25 +24,21 @@ class AstPreparingVisitor extends RecursiveVisitor<void, void> {
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final scope = e.scope = e.scope.createChild();
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final registeredTable = scope.resolve(e.tableName) as Table?;
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// This is used so that tables can refer to their own columns. Code using
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// tables would first register the table and then run analysis again.
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if (registeredTable != null) {
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scope.availableColumns = registeredTable.resolvedColumns;
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for (final column in registeredTable.resolvedColumns) {
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scope.register(column.name, column);
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}
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}
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visitChildren(e, arg);
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}
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@override
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void visitCreateViewStatement(CreateViewStatement e, void arg) {
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final scope = e.scope = e.scope.createChild();
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final registeredView = scope.resolve(e.viewName) as View?;
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if (registeredView != null) {
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scope.availableColumns = registeredView.resolvedColumns;
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for (final column in registeredView.resolvedColumns) {
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scope.register(column.name, column);
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}
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}
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e.scope = e.scope.createChild();
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visitChildren(e, arg);
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}
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