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Allow undefined --- as a struct field default value.

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Ginger Bill
2017-07-18 15:09:24 +01:00
parent 193c7c82c8
commit 277ef1a68f
6 changed files with 37 additions and 36 deletions
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17
src/check_expr.cpp
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@@ -879,15 +879,20 @@ void check_record_field_decl(Checker *c, AstNode *decl, Array<Entity *> *fields,
e->identifier = name;
if (name_field_index < default_values.count) {
Operand op = default_values[name_field_index++];
check_init_variable(c, e, &op, str_lit("struct field assignment"));
if (is_operand_nil(op)) {
Operand a = default_values[name_field_index];
Operand b = default_values[name_field_index];
check_init_variable(c, e, &b, str_lit("struct field assignment"));
if (is_operand_nil(a)) {
e->Variable.default_is_nil = true;
} else if (op.mode != Addressing_Constant) {
error(op.expr, "Default field parameter must be a constant");
} else if (is_operand_undef(a)) {
e->Variable.default_is_undef = true;
} else if (b.mode != Addressing_Constant) {
error(b.expr, "Default field parameter must be a constant");
} else {
e->Variable.default_value = op.value;
e->Variable.default_value = b.value;
}
name_field_index++;
} else {
GB_ASSERT(type != nullptr);
}