52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/** @file ParserResult.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 <xo/expression2/Expression.hpp>
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#include <xo/object2/DString.hpp>
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#include <string_view>
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namespace xo {
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namespace scm {
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enum class parser_result_type {
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/** no result yet (no input or incomplete expression) **/
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none,
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/** emit expression **/
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expression,
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/** emit parsing error **/
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error,
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N
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};
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class ParserResult {
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public:
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ParserResult() = default;
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ParserResult(parser_result_type type,
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obj<AExpression> expr,
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std::string_view error_src_fn,
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const DString * error_description);
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/** create ParserResult for a parsing error.
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* Reporting detailed message @p errmsg
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* from syntax state machine @p ssm
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**/
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static ParserResult error(std::string_view ssm,
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const DString * errmsg);
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parser_result_type result_type() const { return result_type_; }
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obj<AExpression> result_expr() const { return result_expr_; }
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const DString * error_description() const { return error_description_; }
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private:
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parser_result_type result_type_ = parser_result_type::none;
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obj<AExpression> result_expr_;
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std::string_view error_src_fn_;
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const DString * error_description_ = nullptr;
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};
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} /*namespace scm*/
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} /*namespace xo*/
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/* end ParserResult.hpp */
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