tingwei628/cocp

[Stanford CS143] COOL compiler

cocp's Issues

ANTLR

https://tomassetti.me/why-you-should-not-use-flex-yacc-and-bison/

https://github.com/antlr/antlr4/blob/master/doc/python-target.md

[Lexer] More checks

"Unmatched *)"
"EOF in string constant"
"Unterminated string constant" e.g . "{xxxx}\n"
"String contains escaped null character." e.g . "{xxxx}""
"String contains null character" e.g . "{xxxx}\0"
"String constant too long"

LLVM support

https://github.com/lsegal/my_toy_compiler

note

https://larry850806.github.io/2016/06/23/regex/

/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/libfl.so: 未定義的參考到 yylex

加入這行 %option noyywrap 到 cool.flex

參考: avoiding -lfl and link problems with yywrap

/*
 *  The scanner definition for COOL.
 */
%option noyywrap  /*  SOLUTION add this line */
/*
 *  Stuff enclosed in %{ %} in the first section is copied verbatim to the
 *  output, so headers and global definitions are placed here to be visible
 * to the code in the file.  Don't remove anything that was here initially
 */
%{
#include <cool-parse.h>
#include <stringtab.h>
#include <utilities.h>
...