111 lines
3.4 KiB
C++
111 lines
3.4 KiB
C++
/** @file DLambdaExpr.hpp
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*
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* @author Roland Conybeare, Jan 2026
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**/
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#pragma once
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#include "Expression.hpp"
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#include "TypeRef.hpp"
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#include "exprtype.hpp"
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#include "DLocalSymtab.hpp"
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#include "DString.hpp"
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#include <xo/facet/obj.hpp>
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namespace xo {
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namespace scm {
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/** @class DLambdaExpr
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* @brief syntax tree for a function/procedure definition
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*
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**/
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class DLambdaExpr {
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public:
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using AAllocator = xo::mm::AAllocator;
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using TypeDescr = xo::reflect::TypeDescr;
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using ppindentinfo = xo::print::ppindentinfo;
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public:
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/** @defgroup scm-lambdaexpr-ctors **/
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///@{
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DLambdaExpr(TypeRef typeref,
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const DUniqueString * name,
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DLocalSymtab * local_symtab,
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obj<AExpression> body);
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/** create instance using memory from @p mm **/
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static obj<AExpression,DLambdaExpr> make(obj<AAllocator> mm,
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TypeRef typeref,
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const DUniqueString * name,
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DLocalSymtab * local_symtab,
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obj<AExpression> body);
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/** create instance, using memory from @p mm **/
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static DLambdaExpr * _make(obj<AAllocator> mm,
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TypeRef typeref,
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const DUniqueString * name,
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DLocalSymtab * local_symtab,
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obj<AExpression> body);
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///@}
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/** @defgroup scm-lambdaexpr-methods **/
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///@{
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DLocalSymtab * local_symtab() const noexcept { return local_symtab_; }
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// get_free_variables()
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// visit_preorder()
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// visit_layer()
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// xform_layer()
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// attach_envs(SymbolTable*)
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///@}
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/** @defgroup scm-lambdaexpr-expression-facet **/
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///@{
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exprtype extype() const noexcept;
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TypeRef typeref() const noexcept;
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TypeDescr valuetype() const noexcept;
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void assign_valuetype(TypeDescr td) noexcept;
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///@}
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/** @defgroup scm-lambdaexpr-printable-facet **/
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///@{
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bool pretty(const ppindentinfo & ppii) const;
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///@}
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private:
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/** expression value always has type consistent
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* with description here
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**/
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TypeRef typeref_;
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/** name for this lambda (generated if necessary) **/
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const DUniqueString * name_ = nullptr;
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#ifdef NOT_YET
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/** e.g.
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* i64(f64,string)
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* for function of two arguments with types (f64, string) respectively,
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* that returns an i64.
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**/
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const DUniqueString * type_name_str_ = nullptr;
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#endif
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/** symbol table for lambda arguments **/
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DLocalSymtab * local_symtab_ = nullptr;;
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/** expression for function body **/
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obj<AExpression> body_expr_;
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// free_var_set
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// captured_var_set
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// layer_var_map
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// nested_lambda_map
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};
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} /*namespace scm*/
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} /*namespace xo*/
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/* end DLambdaExpr.hpp */
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