Zack Buhman
e48bd182dc
This also concedes that a lexer that returns std::vector is probably the simplest API for the parser, but I will still continue to consider alternatives.
42 lines
855 B
C++
42 lines
855 B
C++
#include "ast.hpp"
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namespace dsp {
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void ast_printer_t::visit(const unary_t * unary) const
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{
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parenthesize((unary->oper).lexeme, unary->right);
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}
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void ast_printer_t::visit(const binary_t * binary) const
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{
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parenthesize((binary->oper).lexeme, binary->left, binary->right);
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}
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void ast_printer_t::visit(const grouping_t * grouping) const
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{
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parenthesize(std::string_view("<grouping>"), grouping->expr);
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}
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void ast_printer_t::visit(const literal_t * literal) const
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{
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os << std::to_string(literal->value);
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}
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void ast_printer_t::parenthesize(const std::string_view s, const expr_t * a) const
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{
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os << '(' << s << ' ';
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a->accept(this);
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os << ')';
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}
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void ast_printer_t::parenthesize(const std::string_view s, const expr_t * a, const expr_t * b) const
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{
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os << '(' << s << ' ';
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a->accept(this);
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os << ' ';
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b->accept(this);
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os << ')';
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}
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}
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