68 lines
2.8 KiB
C++
68 lines
2.8 KiB
C++
/** @file progress_xs.hpp
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*
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* Author: Roland Conybeare
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**/
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#pragma once
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#include "exprstate.hpp"
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//#include <cstdint>
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namespace xo {
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namespace scm {
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/** @class progress_xs
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* @brief state machine for parsing a schematica runtime-value-expression
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**/
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class progress_xs : public exprstate {
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public:
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progress_xs(rp<Expression> valex);
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virtual ~progress_xs() = default;
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static const progress_xs * from(const exprstate * x) { return dynamic_cast<const progress_xs *>(x); }
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static std::unique_ptr<progress_xs> make(rp<Expression> valex);
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virtual bool admits_definition() const override;
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virtual bool admits_symbol() const override;
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virtual bool admits_colon() const override;
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virtual bool admits_semicolon() const override;
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virtual bool admits_singleassign() const override;
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virtual bool admits_leftparen() const override;
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virtual bool admits_rightparen() const override;
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virtual bool admits_f64() const override;
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// virtual void on_f64(..) override
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virtual void on_def(exprstatestack * p_stack) override;
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virtual void on_expr(ref::brw<Expression> expr,
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exprstatestack * p_stack,
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rp<Expression> * p_emit_expr) override;
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virtual void on_symbol_token(const token_type & tk,
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exprstatestack * p_stack,
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rp<Expression> * p_emit_expr) override;
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virtual void on_typedescr(TypeDescr td,
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exprstatestack * /*p_stack*/,
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rp<Expression> * /*p_emit_expr*/) override;
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virtual void on_colon(exprstatestack * p_stack) override;
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virtual void on_semicolon(exprstatestack * p_stack,
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rp<Expression> * /*p_emit_expr*/) override;
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virtual void on_singleassign(exprstatestack * p_stack) override;
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virtual void on_leftparen(exprstatestack * p_stack,
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rp<Expression> * /*p_emit_expr*/) override;
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virtual void on_rightparen(exprstatestack * p_stack,
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rp<Expression> * /*p_emit_expr*/) override;
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virtual void on_f64(const token_type & tk,
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exprstatestack * p_stack,
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rp<Expression> * /*p_emit_expr*/) override;
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virtual void print(std::ostream & os) const override;
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private:
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/** populate an expression here **/
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rp<Expression> gen_expr_;
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};
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} /*namespace scm*/
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} /*namespace xo*/
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/** end progress_xs.hpp **/
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