[WIP] Experiment with generating a header file the unicode_tables

[wilzbach]

1. There's a bug in the header generation with return - will look into that one shortly
2. It's stil failing with another D header file generation bug :/

> echo "import std.net.curl;" | dmddev -c -o- -
std/uni.d(7002): Error: function std.internal.unicode_tables.isHangL is not accessible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(7004): Error: function std.internal.unicode_tables.isHangV is not accessible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(7008): Error: function std.internal.unicode_tables.isHangT is not accessible from module uni
std/uni.d(7032): Error: function std.internal.unicode_tables.isHangL is not accessible from module uni
std/uni.d(7034): Error: function std.internal.unicode_tables.isHangV is not accessible from module uni
std/uni.d(7048): Error: function std.internal.unicode_tables.isHangV is not accessible from module uni
std/uni.d(7050): Error: function std.internal.unicode_tables.isHangT is not accessible from module uni
std/uni.d(7059): Error: function std.internal.unicode_tables.isHangT is not accessible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(10335): Deprecation: std.internal.unicode_tables.TrieEntry(T...) is not visible from module uni
std/uni.d(7104): Error: template instance std.uni.genericDecodeGrapheme!false.genericDecodeGrapheme!(const(char)[]) error instantiating
std/format.d(3123):        instantiated from here: graphemeStride!char
std/format.d(2807):        instantiated from here: formatRange!(Appender!string, string, char)
std/format.d(1777):        instantiated from here: formatValueImpl!(Appender!string, string, char)
std/format.d(567):        ... (1 instantiations, -v to show) ...
std/format.d(6115):        instantiated from here: formattedWrite!(Appender!string, char, const(ushort), string, const(ushort), const(ushort))
std/net/curl.d(3295):        instantiated from here: format!(char, const(ushort), string, const(ushort), const(ushort))

[dlang-bot]

Thanks for your pull request, @wilzbach!

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[wilzbach]

It's stil failing with another D header file generation bug :/

Here's the first PR: dlang/dmd#7835

[wilzbach]

and another DMD PR is required: dlang/dmd#7836
However, with both PRs this compiles, but doesn't lead to any significant improvement, because even though the tables are private, they are still templated and thus included in the header file :/

[CyberShadow]

Yeah, I guess there's also that they won't be usable in CTFE when hidden this way...