45 lines
891 B
C++
45 lines
891 B
C++
#include <string>
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#include "token.hpp"
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#include "visitor.hpp"
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#include "num.hpp"
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namespace dsp {
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struct expr_t
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{
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virtual void accept(visitor_t<void> const * visitor) const = 0;
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virtual std::string accept(visitor_t<std::string> const * visitor) const = 0;
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};
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template <typename T>
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struct expr_accept_t : expr_t {
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virtual void accept(visitor_t<void> const * visitor) const {
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return visitor->visit(static_cast<const T*>(this));
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}
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virtual std::string accept(visitor_t<std::string> const * visitor) const
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{
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return visitor->visit(static_cast<const T*>(this));
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}
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};
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struct assign_t : expr_accept_t<assign_t>
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{
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assign_t(token_t& name, expr_t& value)
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: name(name), value(value) {}
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const token_t name;
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const expr_t& value;
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};
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struct literal_t : expr_accept_t<literal_t>
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{
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literal_t(num_t value)
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: value(value) {}
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const num_t value;
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};
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}
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