84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
#pragma once
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#include "elna/source/parser.hpp"
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#include "elna/source/symbol_table.hpp"
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namespace elna::source
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{
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class name_analysis_visitor final : public empty_visitor
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{
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std::shared_ptr<symbol_table> table;
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const std::filesystem::path filename;
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std::list<std::unique_ptr<error>> m_errors;
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std::shared_ptr<const type> convert_declaration_type(const type_expression& ast_type) const;
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public:
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/**
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* \param table Symbol table.
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* \param path Source filename.
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*/
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name_analysis_visitor(std::shared_ptr<symbol_table> table, const std::filesystem::path& filename);
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/**
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* \return Collected errors.
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*/
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const std::list<std::unique_ptr<error>>& errors() const noexcept;
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void visit(constant_definition *definition) override;
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void visit(declaration *declaration) override;
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void visit(program *program) override;
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void visit(procedure_definition *procedure) override;
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};
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/**
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* Visitor which allocates registers and stack space for variables and
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* parameters.
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*/
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class allocator_visitor final : public empty_visitor
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{
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std::ptrdiff_t local_offset;
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std::ptrdiff_t argument_offset;
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std::shared_ptr<symbol_table> table;
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public:
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allocator_visitor(std::shared_ptr<symbol_table> table);
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void visit(declaration *declaration) override;
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void visit(program *program) override;
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void visit(procedure_definition *procedure) override;
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void visit(call_statement *statement) override;
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};
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/**
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* This visitor performs the type checking.
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*/
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class type_analysis_visitor final : public empty_visitor
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{
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std::shared_ptr<symbol_table> table;
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const std::filesystem::path filename;
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const std::size_t pointer_size;
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std::list<std::unique_ptr<error>> m_errors;
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public:
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/**
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* \param table Symbol table.
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* \param path Source filename.
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* \param target_pointer_size Pointer size on the target platform.
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*/
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type_analysis_visitor(std::shared_ptr<symbol_table> table, const std::filesystem::path& filename,
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std::size_t target_pointer_size);
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/**
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* \return Collected errors.
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*/
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const std::list<std::unique_ptr<error>>& errors() const noexcept;
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void visit(program *program) override;
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void visit(procedure_definition *definition) override;
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void visit(integer_literal *literal) override;
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void visit(boolean_literal *literal) override;
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void visit(unary_expression *expression) override;
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};
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}
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