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Add #+feature integer-division-by-zero:<string>

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This commit is contained in:
gingerBill
2025-08-08 10:24:44 +01:00
parent e4a0228a80
commit 991883d0e1
4 changed files with 77 additions and 22 deletions
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42
src/parser.cpp
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@@ -6289,7 +6289,7 @@ gb_internal bool parse_build_tag(Token token_for_pos, String s) {
return any_correct;
}
gb_internal String vet_tag_get_token(String s, String *out) {
gb_internal String vet_tag_get_token(String s, String *out, bool allow_colon) {
s = string_trim_whitespace(s);
isize n = 0;
while (n < s.len) {
@@ -6297,7 +6297,7 @@ gb_internal String vet_tag_get_token(String s, String *out) {
isize width = utf8_decode(&s[n], s.len-n, &rune);
if (n == 0 && rune == '!') {
} else if (!rune_is_letter(rune) && !rune_is_digit(rune) && rune != '-') {
} else if (!rune_is_letter(rune) && !rune_is_digit(rune) && rune != '-' && !(allow_colon && rune == ':')) {
isize k = gb_max(gb_max(n, width), 1);
*out = substring(s, k, s.len);
return substring(s, 0, k);
@@ -6323,7 +6323,7 @@ gb_internal u64 parse_vet_tag(Token token_for_pos, String s) {
u64 vet_not_flags = 0;
while (s.len > 0) {
String p = string_trim_whitespace(vet_tag_get_token(s, &s));
String p = string_trim_whitespace(vet_tag_get_token(s, &s, /*allow_colon*/false));
if (p.len == 0) {
break;
}
@@ -6391,7 +6391,7 @@ gb_internal u64 parse_feature_tag(Token token_for_pos, String s) {
u64 feature_not_flags = 0;
while (s.len > 0) {
String p = string_trim_whitespace(vet_tag_get_token(s, &s));
String p = string_trim_whitespace(vet_tag_get_token(s, &s, /*allow_colon*/true));
if (p.len == 0) {
break;
}
@@ -6413,26 +6413,44 @@ gb_internal u64 parse_feature_tag(Token token_for_pos, String s) {
} else {
feature_flags |= flag;
}
if (is_notted) {
switch (flag) {
case OptInFeatureFlag_IntegerDivisionByZero_Trap:
case OptInFeatureFlag_IntegerDivisionByZero_Zero:
syntax_error(token_for_pos, "Feature flag does not support notting with '!' - '%.*s'", LIT(p));
break;
}
}
} else {
ERROR_BLOCK();
syntax_error(token_for_pos, "Invalid feature flag name: %.*s", LIT(p));
error_line("\tExpected one of the following\n");
error_line("\tdynamic-literals\n");
error_line("\tinteger-division-by-zero:trap\n");
error_line("\tinteger-division-by-zero:zero\n");
return OptInFeatureFlag_NONE;
}
}
u64 res = OptInFeatureFlag_NONE;
if (feature_flags == 0 && feature_not_flags == 0) {
return OptInFeatureFlag_NONE;
res = OptInFeatureFlag_NONE;
} else if (feature_flags == 0 && feature_not_flags != 0) {
res = OptInFeatureFlag_NONE &~ feature_not_flags;
} else if (feature_flags != 0 && feature_not_flags == 0) {
res = feature_flags;
} else {
GB_ASSERT(feature_flags != 0 && feature_not_flags != 0);
res = feature_flags &~ feature_not_flags;
}
if (feature_flags == 0 && feature_not_flags != 0) {
return OptInFeatureFlag_NONE &~ feature_not_flags;
if ((res & OptInFeatureFlag_IntegerDivisionByZero_ALL) ==
OptInFeatureFlag_IntegerDivisionByZero_ALL) {
syntax_error(token_for_pos, "Only one integer-division-by-zero feature flag can be enabled");
}
if (feature_flags != 0 && feature_not_flags == 0) {
return feature_flags;
}
GB_ASSERT(feature_flags != 0 && feature_not_flags != 0);
return feature_flags &~ feature_not_flags;
return res;
}
gb_internal String dir_from_path(String path) {