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Implement case statements

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This commit is contained in:
Eugen Wissner
2025-04-10 23:55:56 +02:00
parent 18c4e79012
commit d01f36cc1a
8 changed files with 96 additions and 24 deletions
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14
boot/parser.yy
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@ -141,7 +141,7 @@ along with GCC; see the file COPYING3. If not see
%type <elna::boot::unary_expression *> unary_expression;
%type <elna::boot::binary_expression *> binary_expression;
%type <std::vector<elna::boot::expression *>> expressions actual_parameter_list;
%type <elna::boot::designator_expression *> designator_expression;
%type <elna::boot::designator_expression *> designator_expression dereference_expression;
%type <elna::boot::procedure_call*> call_expression;
%type <elna::boot::while_statement *> while_statement;
%type <elna::boot::if_statement *> if_statement;
@ -324,6 +324,10 @@ literal:
{
$$ = new boot::literal<std::string>(boot::make_position(@1), $1);
}
| IDENTIFIER
{
$$ = new boot::variable_expression(boot::make_position(@1), $1);
}
traits_expression:
TRAIT "(" type_expressions ")"
{
@ -332,7 +336,7 @@ traits_expression:
}
simple_expression:
literal { $$ = $1; }
| designator_expression { $$ = $1; }
| dereference_expression { $$ = $1; }
| traits_expression { $$ = $1; }
| cast_expression { $$ = $1; }
| call_expression { $$ = $1; }
@ -437,16 +441,18 @@ type_expressions:
$$.emplace($$.cbegin(), $1);
}
| type_expression { $$.push_back($1); }
designator_expression:
dereference_expression:
simple_expression "[" expression "]"
{
$$ = new boot::array_access_expression(boot::make_position(@2), $1, $3);
}
| qualident { $$ = $1; }
| qualident { $$ = $1; }
| simple_expression "^"
{
$$ = new boot::dereference_expression(boot::make_position(@1), $1);
}
designator_expression:
dereference_expression { $$ = $1; }
| IDENTIFIER
{
$$ = new boot::variable_expression(boot::make_position(@1), $1);

25
boot/symbol.cc
View File

@ -292,6 +292,16 @@ namespace elna::boot
return nullptr;
}
std::shared_ptr<constant_info> info::is_constant()
{
return nullptr;
}
std::shared_ptr<variable_info> info::is_variable()
{
return nullptr;
}
type_info::type_info(const type symbol)
: symbol(symbol)
{
@ -317,6 +327,21 @@ namespace elna::boot
{
}
std::shared_ptr<constant_info> constant_info::is_constant()
{
return std::static_pointer_cast<constant_info>(shared_from_this());
}
variable_info::variable_info(const std::string& name, const type symbol)
: name(name), symbol(symbol)
{
}
std::shared_ptr<variable_info> variable_info::is_variable()
{
return std::static_pointer_cast<variable_info>(shared_from_this());;
}
std::shared_ptr<symbol_table> builtin_symbol_table()
{
auto result = std::make_shared<symbol_table>();