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update parser to LL(1)

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Valk Richard Li
2021-02-13 13:28:20 +08:00
parent 468ad6157f
commit 92aaef55d2
4 changed files with 202 additions and 553 deletions
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nasal_lexer.h
+4 -1
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@@ -27,7 +27,8 @@ enum token_type
tok_colon,tok_add,tok_sub,tok_mult,tok_div,tok_link,tok_not,
tok_eq,
tok_addeq,tok_subeq,tok_multeq,tok_diveq,tok_lnkeq,
tok_cmpeq,tok_neq,tok_less,tok_leq,tok_grt,tok_geq
tok_cmpeq,tok_neq,tok_less,tok_leq,tok_grt,tok_geq,
tok_eof
};
struct
@@ -382,6 +383,8 @@ void nasal_lexer::scanner()
die("["+line_code+"_] unknown character.",line,line_code.length());
}
}
token tk(line,tok_eof,"");
token_list.push_back(tk);
return;
}