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Support variable declaration initializer

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This commit is contained in:
Eugen Wissner
2025-08-19 22:58:39 +02:00
parent 569139d44a
commit 0c2a396320
10 changed files with 175 additions and 102 deletions
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26
boot/parser.yy
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@@ -135,7 +135,8 @@ along with GCC; see the file COPYING3. If not see
%type <std::vector<elna::boot::switch_case>> switch_cases;
%type <elna::boot::constant_declaration *> constant_declaration;
%type <std::vector<elna::boot::constant_declaration *>> constant_part constant_declarations;
%type <std::vector<elna::boot::variable_declaration *>> variable_declarations variable_part variable_declaration;
%type <elna::boot::variable_declaration *> variable_declaration;
%type <std::vector<elna::boot::variable_declaration *>> variable_declarations variable_part;
%type <elna::boot::type_expression *> type_expression;
%type <std::vector<elna::boot::type_expression *>> type_expressions;
%type <elna::boot::traits_expression *> traits_expression;
@@ -501,24 +502,23 @@ identifiers:
$$.emplace($$.cbegin(), std::move($1));
}
| IDENTIFIER { $$.emplace_back(std::move($1)); }
variable_declaration: identifier_definitions ":" type_expression ";"
variable_declaration:
identifier_definitions ":" type_expression ";"
{
std::shared_ptr<boot::type_expression> shared_type{ $3 };
for (boot::identifier_definition& identifier : $1)
{
boot::variable_declaration *declaration = new boot::variable_declaration(
boot::make_position(@2), std::move(identifier), shared_type);
$$.push_back(declaration);
}
$$ = new boot::variable_declaration( boot::make_position(@2), std::move($1), shared_type);
}
| identifier_definitions ":" type_expression ":=" expression ";"
{
std::shared_ptr<boot::type_expression> shared_type{ $3 };
$$ = new boot::variable_declaration( boot::make_position(@2), std::move($1), shared_type, $5);
}
variable_declarations:
/* no variable declarations */ {}
| variable_declaration variable_declarations
{
std::swap($$, $1);
$$.reserve($$.size() + $2.size());
$$.insert(std::end($$), std::begin($2), std::end($2));
std::swap($$, $2);
$$.insert(std::cbegin($$), $1);
}
variable_part:
/* no variable declarations */ {}
@@ -531,7 +531,7 @@ constant_declarations:
constant_declaration constant_declarations
{
std::swap($$, $2);
$$.insert($$.cbegin(), $1);
$$.insert(std::cbegin($$), $1);
}
| /* no constant definitions */ {}
constant_part: