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Implement shift operators

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This commit is contained in:
Eugen Wissner
2025-02-15 00:38:46 +01:00
parent ee4ebf64b9
commit 82b3806fd2
7 changed files with 53 additions and 23 deletions
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4
boot/ast.cc
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@ -1012,6 +1012,10 @@ namespace boot
return "or";
case binary_operator::exclusive_disjunction:
return "xor";
case binary_operator::shift_left:
return "<<";
case binary_operator::shift_right:
return ">>";
}
__builtin_unreachable();
};

9
boot/lexer.ll
View File

@ -137,9 +137,6 @@ return {
cast {
return yy::parser::make_CAST(this->location);
}
sizeof {
return yy::parser::make_SIZEOF(this->location);
}
defer {
return yy::parser::make_DEFER(this->location);
}
@ -232,6 +229,12 @@ defer {
\] {
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);
}

14
boot/parser.yy
View File

@ -85,7 +85,7 @@ along with GCC; see the file COPYING3. If not see
%token CONST VAR PROCEDURE ARRAY OF TYPE RECORD POINTER TO UNION
%token BEGIN_BLOCK END_BLOCK EXTERN DEFER
%token LEFT_PAREN RIGHT_PAREN LEFT_SQUARE RIGHT_SQUARE SEMICOLON DOT COMMA
%token AND OR NOT CAST SIZEOF
%token AND OR NOT CAST SHIFT_LEFT SHIFT_RIGHT
%token GREATER_EQUAL LESS_EQUAL LESS_THAN GREATER_THAN NOT_EQUAL EQUALS
%token PLUS MINUS MULTIPLICATION DIVISION REMAINDER
%token ASSIGNMENT COLON HAT AT NIL ARROW
@ -344,6 +344,16 @@ expression:
$$ = new elna::boot::binary_expression(elna::boot::make_position(@2), $1, $3,
elna::boot::binary_operator::exclusive_disjunction);
}
| expression SHIFT_LEFT expression
{
$$ = new elna::boot::binary_expression(elna::boot::make_position(@2), $1, $3,
elna::boot::binary_operator::shift_left);
}
| expression SHIFT_RIGHT expression
{
$$ = new elna::boot::binary_expression(elna::boot::make_position(@2), $1, $3,
elna::boot::binary_operator::shift_right);
}
unary:
AT operand
{
@ -448,7 +458,7 @@ variable_declarations:
| variable_declaration { $$.emplace_back(std::move($1)); }
variable_part:
/* no variable declarations */ {}
| VAR variable_declarations SEMICOLON { std::swap($$, $2); }
| VAR variable_declarations { std::swap($$, $2); }
constant_definition: identifier_definition EQUALS literal
{
$$ = new elna::boot::constant_definition(elna::boot::make_position(@1), $1.first, $1.second, $3);