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* First pass at caching file system.
* default-file-system -> slang-file-system
fix problem with location("build.linux") confusing windows build for now.
* Added CompressedResult
Fix problem in Result construction with it being unsigned
* Add support for Path simplification.
* Testing for Path::Simplify.
* Refactored CacheFileSystem - automatically handles ISlangFileSystem or ISlangFileSystemExt appropriately.
Removed WrapFileSystem - because wasn't possible to emulate some of the behavior if just loadFile is implemented.
Split out StringBlob - so that no need to convert between ISlangBlob and String repeatidly.
* Remove unwanted code in ~CompileRequest
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* Added getPathType to ISlangFileSystemExt.
This is needed so that when searching for a file it's existance can be tested without loading the file. On some platforms a getCanonicalPath can do this - but depending on how getCanonicalPath is implemented, it may not do. This test is made after the relative path is produced before finding the canonical path.
* Test for importing along search path.
* Added comment to explain the issue around WrapFileSystem impl of getPathType.
* Make search path use / not \
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* Refactor of path handling.
* Added PathInfo
* Changed ISlangFileSystem - such that has separate concepts of reading a file, getting a relative path and getting a canonical path
* Added support for getting a canonical path for windows/linux
* Made maps/testing around canonicalPaths
* User output remains around 'foundPath' - which is the same as before
* Small improvements around PathInfo
* Added a type and make constructors to make clear the different 'path' uses
* Fixed bug in findViewRecursively
* Checking and reporting for ignored #pragma once.
* Removed SLANG_PATH_TYPE_NONE as doesn't serve any useful purpose.
* Improve comments in slang.h aroung ISlangFileSystem
* Remove the need for <windows.h> in slang-io.cpp
* Ran premake5.
* Improvements and fixes around PathInfo.
* Fix typo on linix GetCanonical
* Make the ISlangFileSystem the same as before, and ISlangFileSystem contain the new methods.
Internally it always uses the ISlangFileSystemExt, and will wrap a ISlangFileSystem with WrapFileSystem, if it is determined (via queryInterface) that it doesn't implement the full interface.
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The code should now compile cleanly with warnings as errors for VS2015 with `W3`.
Most of the changes had to do with propagating a real pointer-sized integer type through code that had been using `int`.
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- `RefPtr` no longer tries to have distinct cases for interal-vs-external reference counts. Instead we always require an internal reference count.
- Types the used `RefPtr` but weren't `RefObject` were made to inherit `RefObject`
- The `ReferenceCounted` base class was removed, so that only `RefObject` remains
- Implicit conversion from `RefPtr<T>` to `T*` added
- This created some complicates for other types that relied on implicit conversions, so this isn't a net cleanup right now
- The main type that got messed up by the above was `String`, which previously held a `RefPtr<char, ...>`. This change thus *also* includes a major overhaul of `String`:
- `String` now holds all its data via indirection, using a `StringRepresentation` that is a `RefObject`. This object holds a length, capacity, and directly stores the character data in its allocation. This means that `sizeof(String)==sizeof(void*)`
- It is now possible to directly mutate a `String` by appending to its representation (we just need to ensure it has a reference count of `1`, possibly by cloning it). This means that `StringBuilder` is now basically just an idomatic use of `String`
- A couple operations that just return sub-ranges of a `String` now return `StringSlice` to avoid allocation when it isn't needed. This required more work.
- Indices into strings changed from `int` to `UInt` (which is pointer-sized). This had a bunch of follow-on changes because the value `-1` sometimes needs to be special-cased in code that uses indices. Further cleanups are probably needed here.
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It is always easier to add back code when you need it, than it is to maintain code you aren't using.
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Getting rid of more namespace complexity and stripping things down to the basics.
This also gets rid of some dead code in the "core" library.
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