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3048274f5e
Closes #4283. Heredocs are implemented in a way that makes them feel more like a string (and not a weird redirection, a la bash). There are two tunables, whether the string is dedented (`<<-` vs `<<~`) and whether it allows interpolation (quoted key vs not). To the familiar people, this is how Ruby handles them, and I feel is the most elegant heredoc syntax. Unlike the oddjob that is bash, heredocs are treated exactly as normal strings, and can be used _anywhere_ where a string can be used. They are *required* to appear in the same order as used after a newline is seen when parsing the sequence that the heredoc is used in. For instance: ```sh echo <<-doc1 <<-doc2 | blah blah contents for doc1 doc1 contents for doc2 doc2 ``` The typical nice errors are also implemented :^)
254 lines
5 KiB
C++
254 lines
5 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "NodeVisitor.h"
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#include "AST.h"
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namespace Shell::AST {
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void NodeVisitor::visit(const AST::PathRedirectionNode* node)
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{
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node->path()->visit(*this);
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}
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void NodeVisitor::visit(const AST::And* node)
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{
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node->left()->visit(*this);
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node->right()->visit(*this);
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}
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void NodeVisitor::visit(const AST::ListConcatenate* node)
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{
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for (auto& subnode : node->list())
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subnode->visit(*this);
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}
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void NodeVisitor::visit(const AST::Background* node)
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{
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node->command()->visit(*this);
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}
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void NodeVisitor::visit(const AST::BarewordLiteral*)
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{
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}
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void NodeVisitor::visit(const AST::BraceExpansion* node)
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{
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for (auto& entry : node->entries())
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entry.visit(*this);
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}
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void NodeVisitor::visit(const AST::CastToCommand* node)
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{
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node->inner()->visit(*this);
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}
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void NodeVisitor::visit(const AST::CastToList* node)
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{
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if (node->inner())
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node->inner()->visit(*this);
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}
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void NodeVisitor::visit(const AST::CloseFdRedirection*)
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{
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}
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void NodeVisitor::visit(const AST::CommandLiteral*)
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{
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}
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void NodeVisitor::visit(const AST::Comment*)
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{
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}
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void NodeVisitor::visit(const AST::ContinuationControl*)
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{
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}
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void NodeVisitor::visit(const AST::DynamicEvaluate* node)
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{
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node->inner()->visit(*this);
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}
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void NodeVisitor::visit(const AST::DoubleQuotedString* node)
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{
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if (node->inner())
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node->inner()->visit(*this);
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}
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void NodeVisitor::visit(const AST::Fd2FdRedirection*)
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{
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}
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void NodeVisitor::visit(const AST::FunctionDeclaration* node)
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{
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if (node->block())
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node->block()->visit(*this);
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}
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void NodeVisitor::visit(const AST::ForLoop* node)
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{
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if (node->iterated_expression())
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node->iterated_expression()->visit(*this);
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if (node->block())
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node->block()->visit(*this);
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}
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void NodeVisitor::visit(const AST::Glob*)
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{
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}
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void NodeVisitor::visit(const AST::Heredoc* node)
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{
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if (node->contents())
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node->contents()->visit(*this);
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}
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void NodeVisitor::visit(const AST::HistoryEvent*)
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{
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}
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void NodeVisitor::visit(const AST::Execute* node)
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{
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node->command()->visit(*this);
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}
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void NodeVisitor::visit(const AST::IfCond* node)
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{
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node->condition()->visit(*this);
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if (node->true_branch())
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node->true_branch()->visit(*this);
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if (node->false_branch())
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node->false_branch()->visit(*this);
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}
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void NodeVisitor::visit(const AST::ImmediateExpression* node)
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{
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for (auto& node : node->arguments())
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node.visit(*this);
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}
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void NodeVisitor::visit(const AST::Join* node)
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{
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node->left()->visit(*this);
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node->right()->visit(*this);
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}
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void NodeVisitor::visit(const AST::MatchExpr* node)
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{
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node->matched_expr()->visit(*this);
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for (auto& entry : node->entries()) {
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for (auto& option : entry.options)
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option.visit(*this);
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if (entry.body)
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entry.body->visit(*this);
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}
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}
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void NodeVisitor::visit(const AST::Or* node)
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{
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node->left()->visit(*this);
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node->right()->visit(*this);
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}
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void NodeVisitor::visit(const AST::Pipe* node)
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{
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node->left()->visit(*this);
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node->right()->visit(*this);
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}
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void NodeVisitor::visit(const AST::Range* node)
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{
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node->start()->visit(*this);
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node->end()->visit(*this);
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}
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void NodeVisitor::visit(const AST::ReadRedirection* node)
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{
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visit(static_cast<const AST::PathRedirectionNode*>(node));
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}
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void NodeVisitor::visit(const AST::ReadWriteRedirection* node)
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{
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visit(static_cast<const AST::PathRedirectionNode*>(node));
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}
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void NodeVisitor::visit(const AST::Sequence* node)
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{
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for (auto& entry : node->entries())
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entry.visit(*this);
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}
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void NodeVisitor::visit(const AST::Subshell* node)
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{
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if (node->block())
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node->block()->visit(*this);
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}
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void NodeVisitor::visit(const AST::Slice* node)
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{
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node->selector()->visit(*this);
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}
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void NodeVisitor::visit(const AST::SimpleVariable* node)
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{
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if (const AST::Node* slice = node->slice())
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slice->visit(*this);
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}
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void NodeVisitor::visit(const AST::SpecialVariable* node)
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{
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if (const AST::Node* slice = node->slice())
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slice->visit(*this);
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}
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void NodeVisitor::visit(const AST::Juxtaposition* node)
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{
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node->left()->visit(*this);
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node->right()->visit(*this);
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}
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void NodeVisitor::visit(const AST::StringLiteral*)
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{
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}
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void NodeVisitor::visit(const AST::StringPartCompose* node)
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{
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node->left()->visit(*this);
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node->right()->visit(*this);
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}
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void NodeVisitor::visit(const AST::SyntaxError*)
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{
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}
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void NodeVisitor::visit(const AST::SyntheticNode*)
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{
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}
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void NodeVisitor::visit(const AST::Tilde*)
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{
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}
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void NodeVisitor::visit(const AST::VariableDeclarations* node)
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{
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for (auto& entry : node->variables()) {
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entry.name->visit(*this);
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entry.value->visit(*this);
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}
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}
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void NodeVisitor::visit(const AST::WriteAppendRedirection* node)
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{
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visit(static_cast<const AST::PathRedirectionNode*>(node));
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}
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void NodeVisitor::visit(const AST::WriteRedirection* node)
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{
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visit(static_cast<const AST::PathRedirectionNode*>(node));
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}
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}
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