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Relative pointers

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This commit is contained in:
gingerBill
2020-05-15 17:37:00 +01:00
parent 8b066b2456
commit ff92eb9112
14 changed files with 534 additions and 40 deletions
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17
src/parser.cpp
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@@ -87,6 +87,7 @@ Token ast_token(Ast *node) {
case Ast_OpaqueType: return node->OpaqueType.token;
case Ast_PolyType: return node->PolyType.token;
case Ast_ProcType: return node->ProcType.token;
case Ast_RelativeType: return ast_token(node->RelativeType.tag);
case Ast_PointerType: return node->PointerType.token;
case Ast_ArrayType: return node->ArrayType.token;
case Ast_DynamicArrayType: return node->DynamicArrayType.token;
@@ -343,6 +344,10 @@ Ast *clone_ast(Ast *node) {
n->ProcType.params = clone_ast(n->ProcType.params);
n->ProcType.results = clone_ast(n->ProcType.results);
break;
case Ast_RelativeType:
n->RelativeType.tag = clone_ast(n->RelativeType.tag);
n->RelativeType.type = clone_ast(n->RelativeType.type);
break;
case Ast_PointerType:
n->PointerType.type = clone_ast(n->PointerType.type);
break;
@@ -922,7 +927,12 @@ Ast *ast_proc_type(AstFile *f, Token token, Ast *params, Ast *results, u64 tags,
return result;
}
Ast *ast_relative_type(AstFile *f, Ast *tag, Ast *type) {
Ast *result = alloc_ast_node(f, Ast_RelativeType);
result->RelativeType.tag = tag;
result->RelativeType.type = type;
return result;
}
Ast *ast_pointer_type(AstFile *f, Token token, Ast *type) {
Ast *result = alloc_ast_node(f, Ast_PointerType);
result->PointerType.token = token;
@@ -1825,6 +1835,11 @@ Ast *parse_operand(AstFile *f, bool lhs) {
syntax_error(token, "#bounds_check and #no_bounds_check cannot be applied together");
}
return operand;
} else if (name.string == "relative") {
Ast *tag = ast_basic_directive(f, token, name.string);
tag = parse_call_expr(f, tag);
Ast *type = parse_type(f);
return ast_relative_type(f, tag, type);
} else {
operand = ast_tag_expr(f, token, name, parse_expr(f, false));
}