Remove the old, not self-hosted frontend

1 files changed, 0 insertions, 320 deletions

diff --git a/frontend/lexer.ll b/frontend/lexer.ll
deleted file mode 100644
index f14497b..0000000
--- a/frontend/lexer.ll
+++ /dev/null
@@ -1,320 +0,0 @@
-/* Lexical analyzer.
-   Copyright (C) 2025 Free Software Foundation, Inc.
-
-GCC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3, or (at your option)
-any later version.
-
-GCC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING3.  If not see
-<http://www.gnu.org/licenses/>.  */
-
-%{
-#define YY_NO_UNISTD_H
-#define YY_USER_ACTION this->location.columns(yyleng);
-
-#include <sstream>
-#include "parser.hh"
-
-#undef YY_DECL
-#define YY_DECL yy::parser::symbol_type elna::frontend::lexer::lex(driver& driver)
-#define yyterminate() return yy::parser::make_YYEOF(this->location)
-%}
-
-%option c++ noyywrap never-interactive
-%option yyclass="lexer"
-
-%x IN_COMMENT
-
-ID1 [A-Za-z_]
-ID2 [A-Za-z0-9_]
-HIGIT [0-9a-fA-F]
-BIGIT [01]
-
-%%
-%{
-    this->location.step();
-%}
-
-<IN_COMMENT>{
-    \*\) BEGIN(INITIAL);
-    [^*\n]+ ; /* Eat comment in chunks. */
-    \* ; /* Eat the lone star. */
-    \n+ {
-        this->location.lines(yyleng);
-        this->location.step();
-    }
-}
-\(\* BEGIN(IN_COMMENT);
-[ \t\r] {
-    this->location.step();
-}
-\n+ {
-    this->location.lines(yyleng);
-}
-if {
-    return yy::parser::make_IF(this->location);
-}
-then {
-    return yy::parser::make_THEN(this->location);
-}
-else {
-    return yy::parser::make_ELSE(this->location);
-}
-elsif {
-    return yy::parser::make_ELSIF(this->location);
-}
-while {
-    return yy::parser::make_WHILE(this->location);
-}
-do {
-    return yy::parser::make_DO(this->location);
-}
-proc {
-    return yy::parser::make_PROCEDURE(this->location);
-}
-begin {
-    return yy::parser::make_BEGIN_BLOCK(this->location);
-                        }
-end {
-    return yy::parser::make_END_BLOCK(this->location);
-}
-extern {
-    return yy::parser::make_EXTERN(this->location);
-}
-const {
-    return yy::parser::make_CONST(this->location);
-}
-var {
-    return yy::parser::make_VAR(this->location);
-}
-type {
-    return yy::parser::make_TYPE(this->location);
-}
-record {
-    return yy::parser::make_RECORD(this->location);
-}
-union {
-    return yy::parser::make_UNION(this->location);
-}
-true {
-    return yy::parser::make_BOOLEAN(true, this->location);
-}
-false {
-    return yy::parser::make_BOOLEAN(false, this->location);
-}
-nil {
-    return yy::parser::make_NIL(this->location);
-}
-\& {
-    return yy::parser::make_AND(this->location);
-}
-xor {
-    return yy::parser::make_XOR(this->location);
-}
-or {
-    return yy::parser::make_OR(this->location);
-}
-\| {
-    return yy::parser::make_PIPE(this->location);
-}
-\~ {
-    return yy::parser::make_NOT(this->location);
-}
-return {
-    return yy::parser::make_RETURN(this->location);
-}
-module {
-    return yy::parser::make_MODULE(this->location);
-}
-program {
-    return yy::parser::make_PROGRAM(this->location);
-}
-import {
-    return yy::parser::make_IMPORT(this->location);
-}
-cast {
-    return yy::parser::make_CAST(this->location);
-}
-defer {
-    return yy::parser::make_DEFER(this->location);
-}
-case {
-    return yy::parser::make_CASE(this->location);
-}
-of {
-    return yy::parser::make_OF(this->location);
-}
-{ID1}{ID2}* {
-    return yy::parser::make_IDENTIFIER(yytext, this->location);
-}
-#{ID1}{ID2}* {
-    return yy::parser::make_TRAIT(yytext + 1, this->location);
-}
-[[:digit:]]+u {
-    unsigned long result = strtoul(yytext, NULL, 10);
-
-    if (errno == ERANGE)
-    {
-        REJECT;
-    }
-    else
-    {
-        return yy::parser::make_WORD(result, this->location);
-    }
-}
-[[:digit:]]+ {
-    long result = strtol(yytext, NULL, 10);
-
-    if (errno == ERANGE)
-    {
-        REJECT;
-    }
-    else
-    {
-        return yy::parser::make_INTEGER(result, this->location);
-    }
-}
-0x{HIGIT}+ {
-    unsigned long result = strtoul(yytext, NULL, 16);
-
-    if (errno == ERANGE)
-    {
-        REJECT;
-    }
-    else
-    {
-        return yy::parser::make_WORD(result, this->location);
-    }
-}
-0b{BIGIT}+ {
-    unsigned long result = strtoul(yytext, NULL, 2);
-
-    if (errno == ERANGE)
-    {
-        REJECT;
-    }
-    else
-    {
-        return yy::parser::make_WORD(result, this->location);
-    }
-}
-[[:digit:]]+\.[[:digit:]]+ {
-    float result = strtof(yytext, NULL);
-
-    if (errno == ERANGE)
-    {
-        REJECT;
-    }
-    else
-    {
-        return yy::parser::make_FLOAT(result, this->location);
-    }
-}
-'[[:print:]]+' {
-    std::optional<std::string> result = escape_string(yytext);
-    if (!result.has_value() || result.value().size() != 1)
-    {
-        REJECT;
-    }
-    return yy::parser::make_CHARACTER(result.value(), this->location);
-}
-\"[[:print:]]*\" {
-    std::optional<std::string> result = escape_string(yytext);
-    if (!result.has_value())
-    {
-        REJECT;
-    }
-    return yy::parser::make_STRING(result.value(), this->location);
-}
-\( {
-    return yy::parser::make_LEFT_PAREN(this->location);
-}
-\) {
-    return yy::parser::make_RIGHT_PAREN(this->location);
-}
-\[ {
-    return yy::parser::make_LEFT_SQUARE(this->location);
-}
-\] {
-    return yy::parser::make_RIGHT_SQUARE(this->location);
-}
-\<\< {
-    return yy::parser::make_SHIFT_LEFT(this->location);
-}
-\>\> {
-    return yy::parser::make_SHIFT_RIGHT(this->location);
-}
-\>= {
-    return yy::parser::make_GREATER_EQUAL(this->location);
-}
-\<= {
-    return yy::parser::make_LESS_EQUAL(this->location);
-}
-\> {
-    return yy::parser::make_GREATER_THAN(this->location);
-}
-\< {
-    return yy::parser::make_LESS_THAN(this->location);
-}
-\<\> {
-    return yy::parser::make_NOT_EQUAL(this->location);
-}
-= {
-    return yy::parser::make_EQUALS(this->location);
-}
-; {
-    return yy::parser::make_SEMICOLON(this->location);
-}
-\. {
-    return yy::parser::make_DOT(this->location);
-}
-, {
-    return yy::parser::make_COMMA(this->location);
-}
-\+ {
-    return yy::parser::make_PLUS(this->location);
-}
-\-> {
-    return yy::parser::make_ARROW(this->location);
-}
-\- {
-    return yy::parser::make_MINUS(this->location);
-}
-\* {
-    return yy::parser::make_MULTIPLICATION(this->location);
-}
-\/ {
-    return yy::parser::make_DIVISION(this->location);
-}
-% {
-    return yy::parser::make_REMAINDER(this->location);
-}
-:= {
-    return yy::parser::make_ASSIGNMENT(this->location);
-}
-: {
-    return yy::parser::make_COLON(this->location);
-}
-\^ {
-    return yy::parser::make_HAT(this->location);
-}
-@ {
-    return yy::parser::make_AT(this->location);
-}
-! {
-    return yy::parser::make_EXCLAMATION(this->location);
-}
-. {
-    std::stringstream ss;
-
-    ss << "Illegal character 0x" << std::hex << static_cast<unsigned int>(yytext[0]);
-    driver.add_error<syntax_error>(ss.str(), driver.input_file, this->location);
-}
-%%