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93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
#include <Analyzer/LambdaNode.h>
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#include <Common/assert_cast.h>
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#include <Common/SipHash.h>
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#include <IO/WriteBuffer.h>
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#include <IO/WriteHelpers.h>
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#include <IO/Operators.h>
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namespace DB
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{
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LambdaNode::LambdaNode(Names argument_names_, QueryTreeNodePtr expression_, DataTypePtr result_type_)
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: IQueryTreeNode(children_size)
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, argument_names(std::move(argument_names_))
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, result_type(std::move(result_type_))
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{
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auto arguments_list_node = std::make_shared<ListNode>();
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auto & nodes = arguments_list_node->getNodes();
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size_t argument_names_size = argument_names.size();
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nodes.reserve(argument_names_size);
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for (size_t i = 0; i < argument_names_size; ++i)
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nodes.push_back(std::make_shared<IdentifierNode>(Identifier{argument_names[i]}));
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children[arguments_child_index] = std::move(arguments_list_node);
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children[expression_child_index] = std::move(expression_);
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}
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void LambdaNode::dumpTreeImpl(WriteBuffer & buffer, FormatState & format_state, size_t indent) const
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{
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buffer << std::string(indent, ' ') << "LAMBDA id: " << format_state.getNodeId(this);
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if (hasAlias())
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buffer << ", alias: " << getAlias();
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const auto & arguments = getArguments();
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if (!arguments.getNodes().empty())
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{
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buffer << '\n' << std::string(indent + 2, ' ') << "ARGUMENTS " << '\n';
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getArguments().dumpTreeImpl(buffer, format_state, indent + 4);
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}
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buffer << '\n' << std::string(indent + 2, ' ') << "EXPRESSION " << '\n';
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getExpression()->dumpTreeImpl(buffer, format_state, indent + 4);
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}
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bool LambdaNode::isEqualImpl(const IQueryTreeNode & rhs) const
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{
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const auto & rhs_typed = assert_cast<const LambdaNode &>(rhs);
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return argument_names == rhs_typed.argument_names;
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}
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void LambdaNode::updateTreeHashImpl(HashState & state) const
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{
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state.update(argument_names.size());
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for (const auto & argument_name : argument_names)
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{
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state.update(argument_name.size());
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state.update(argument_name);
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}
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}
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QueryTreeNodePtr LambdaNode::cloneImpl() const
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{
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return std::make_shared<LambdaNode>(argument_names, getExpression(), result_type);
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}
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ASTPtr LambdaNode::toASTImpl(const ConvertToASTOptions & options) const
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{
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auto lambda_function_arguments_ast = std::make_shared<ASTExpressionList>();
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auto tuple_function = std::make_shared<ASTFunction>();
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tuple_function->name = "tuple";
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tuple_function->children.push_back(children[arguments_child_index]->toAST(options));
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tuple_function->arguments = tuple_function->children.back();
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lambda_function_arguments_ast->children.push_back(std::move(tuple_function));
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lambda_function_arguments_ast->children.push_back(children[expression_child_index]->toAST(options));
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auto lambda_function_ast = std::make_shared<ASTFunction>();
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lambda_function_ast->name = "lambda";
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lambda_function_ast->children.push_back(std::move(lambda_function_arguments_ast));
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lambda_function_ast->arguments = lambda_function_ast->children.back();
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lambda_function_ast->is_lambda_function = true;
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return lambda_function_ast;
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}
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}
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