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48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
#ifndef VERILOG_LEXER_H
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#define VERILOG_LEXER_H
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#include "kernel/yosys.h"
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#include "frontends/ast/ast.h"
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#include "frontends/verilog/verilog_parser.tab.hh"
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#include <string>
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#include <memory>
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#if ! defined(yyFlexLexerOnce)
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#define yyFlexLexer frontend_verilog_yyFlexLexer
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#include <FlexLexer.h>
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#endif
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YOSYS_NAMESPACE_BEGIN
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namespace VERILOG_FRONTEND {
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using parser = frontend_verilog_yy::parser;
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class VerilogLexer : public frontend_verilog_yyFlexLexer {
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ParseState* extra;
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ParseMode* mode;
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parser::location_type out_loc;
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public:
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VerilogLexer(ParseState* e, ParseMode* m, std::shared_ptr<string> filename) : frontend_verilog_yyFlexLexer(e->lexin), extra(e), mode(m) {
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out_loc.begin.filename = filename;
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}
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~VerilogLexer() override {}
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// autogenerated body due to YY_DECL
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parser::symbol_type nextToken();
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// get rid of override virtual function warning
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using FlexLexer::yylex;
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parser::symbol_type terminate() {
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return parser::make_FRONTEND_VERILOG_YYEOF(out_loc);
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}
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private:
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std::shared_ptr<std::string> current_filename;
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std::vector<std::shared_ptr<std::string>> fn_stack;
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std::vector<int> ln_stack;
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int LexerInput(char* buf, int max_size) override {
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return readsome(*extra->lexin, buf, max_size);
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}
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};
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};
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YOSYS_NAMESPACE_END
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#endif
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