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Add proc(#const x: Type) to enforce a constant parameter (but not polymorphic) to a procedure

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This commit is contained in:
gingerBill
2020-02-26 22:53:40 +00:00
parent 1596bca92d
commit 3d74c2f6c0
5 changed files with 33 additions and 2 deletions
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8
src/parser.cpp
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@@ -2998,6 +2998,7 @@ enum FieldPrefixKind {
FieldPrefix_Invalid = 0,
FieldPrefix_using,
FieldPrefix_const,
FieldPrefix_no_alias,
FieldPrefix_c_var_arg,
FieldPrefix_auto_cast,
@@ -3024,6 +3025,9 @@ FieldPrefixKind is_token_field_prefix(AstFile *f) {
return FieldPrefix_c_var_arg;
}
break;
case Token_const:
return FieldPrefix_const;
}
return FieldPrefix_Unknown;
}
@@ -3036,6 +3040,7 @@ u32 parse_field_prefixes(AstFile *f) {
i32 no_alias_count = 0;
i32 c_vararg_count = 0;
i32 auto_cast_count = 0;
i32 const_count = 0;
for (;;) {
FieldPrefixKind kind = is_token_field_prefix(f);
@@ -3053,12 +3058,14 @@ u32 parse_field_prefixes(AstFile *f) {
case FieldPrefix_no_alias: no_alias_count += 1; advance_token(f); break;
case FieldPrefix_c_var_arg: c_vararg_count += 1; advance_token(f); break;
case FieldPrefix_auto_cast: auto_cast_count += 1; advance_token(f); break;
case FieldPrefix_const: const_count += 1; advance_token(f); break;
}
}
if (using_count > 1) syntax_error(f->curr_token, "Multiple 'using' in this field list");
if (no_alias_count > 1) syntax_error(f->curr_token, "Multiple '#no_alias' in this field list");
if (c_vararg_count > 1) syntax_error(f->curr_token, "Multiple '#c_vararg' in this field list");
if (auto_cast_count > 1) syntax_error(f->curr_token, "Multiple 'auto_cast' in this field list");
if (const_count > 1) syntax_error(f->curr_token, "Multiple '#const' in this field list");
u32 field_flags = 0;
@@ -3066,6 +3073,7 @@ u32 parse_field_prefixes(AstFile *f) {
if (no_alias_count > 0) field_flags |= FieldFlag_no_alias;
if (c_vararg_count > 0) field_flags |= FieldFlag_c_vararg;
if (auto_cast_count > 0) field_flags |= FieldFlag_auto_cast;
if (const_count > 0) field_flags |= FieldFlag_const;
return field_flags;
}