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Implement noreturn procedure declarations

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This commit is contained in:
Eugen Wissner
2025-02-18 16:09:27 +01:00
parent 39750f4656
commit 0b835abfa9
7 changed files with 70 additions and 85 deletions
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8
boot/ast.cc
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@ -419,7 +419,13 @@ namespace boot
procedure_definition::procedure_definition(const struct position position, const std::string& identifier,
const bool exported, std::shared_ptr<top_type> return_type)
: definition(position, identifier, exported), m_return_type(return_type)
: definition(position, identifier, exported), m_return_type(return_type), no_return{ false }
{
}
procedure_definition::procedure_definition(const struct position position, const std::string& identifier,
const bool exported, no_return_t)
: definition(position, identifier, exported), m_return_type(nullptr), no_return{ true }
{
}

3
boot/lexer.ll
View File

@ -280,6 +280,9 @@ defer {
@ {
return yy::parser::make_AT(this->location);
}
! {
return yy::parser::make_EXCLAMATION(this->location);
}
. {
std::stringstream ss;

11
boot/parser.yy
View File

@ -85,13 +85,12 @@ along with GCC; see the file COPYING3. If not see
%token CONST VAR PROCEDURE TYPE RECORD 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 SHIFT_LEFT SHIFT_RIGHT
%token GREATER_EQUAL LESS_EQUAL LESS_THAN GREATER_THAN NOT_EQUAL EQUALS
%token PLUS MINUS MULTIPLICATION DIVISION REMAINDER
%token NOT CAST EXCLAMATION
%token ASSIGNMENT COLON HAT AT NIL ARROW
%left OR AND XOR
%left EQUALS NOT_EQUAL LESS_THAN GREATER_THAN LESS_EQUAL GREATER_EQUAL
%left SHIFT_LEFT SHIFT_RIGHT
%left PLUS MINUS
%left MULTIPLICATION DIVISION REMAINDER
@ -169,6 +168,12 @@ procedure_heading:
$2.first, $2.second);
std::swap($3, $$->parameters);
}
| PROCEDURE identifier_definition formal_parameter_list ARROW EXCLAMATION SEMICOLON
{
$$ = new elna::boot::procedure_definition(elna::boot::make_position(@1),
$2.first, $2.second, elna::boot::procedure_definition::no_return_t{});
std::swap($3, $$->parameters);
}
| PROCEDURE identifier_definition formal_parameter_list ARROW type_expression SEMICOLON
{
$$ = new elna::boot::procedure_definition(elna::boot::make_position(@1),