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* Use symbol alias instead of wrapper synthesis to implement link-time types. ↵Yong He2025-10-07
| | | | | | | | | | | | | | | | | | | | | | | | | | (#8603) This change achieves link-time type resolution with a different mechanism. For `extern struct Foo : IFoo = FooImpl;`, instead of synthesizing a wrapper type `Foo` that has a `FooImpl inner` field and dispatches all interface method calls to `inner.method()`, this PR completely removes this synthesis step, and instead just lower such `extern`/`export` types as `IRSymbolAlias` instructions that is just a reference to the type being wrapped. Then we extend the linker logic to clone the referenced symbol instead of the SymbolAlias insts itself during linking. By doing so, we greatly simply the logic need to support link-time types, and achieves higher robustness by not having to deal with many AST synthesis scenarios. Closes #8554. --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
* Add reflection api for overload candidate filtering. (#8066)Yong He2025-08-06
| | | | | | | | | | | | | * Add reflection api for overload candidate filtering. * Fix API. * Fix. * Update build. * Update test. * Update formatting.
* [Language Server]: Show signature help on generic parameters. (#7913)Yong He2025-07-29
| | | | | | | | | | | | | * Show signature help on generic parameters. * Fix. * Update tests. * slang-test: make vvl error go through stderr. * update slang-rhi * Update slang-rhi
* Language server: sort completion candidate by relevance. (#7626)Yong He2025-07-07
| | | | | * Language server: sort completion candidate by relevance. * Small adjustment.
* Language Server Enhancements (#7604)Yong He2025-07-03
| | | | | | | | | | | | | | | | | | | | | | | * Language Server: auto-select the best candidate in signature help. * Fix constructor call highlighting + goto definition. * Add test. * format code * Improve ctor signature help. * Add tests. * Fix decl path printing for extension children. * Allow goto definition to show core module source. * c++ compile fix. --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
* Allow interface methods to have default implementations. (#7439)Yong He2025-06-13
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* Mediate access to ContainerDecl members (#7242)Theresa Foley2025-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most of what this change does is straightforward: take all the places in the code that used to operate directly on `ContainerDecl::members` and related fields, and instead have them call into a smaller set of accessor methods defined on `ContainerDecl`. The primary motivation for making this change is that in order to implement on-demand loading of members from serialized AST modules, we need a way to identify and intercept the "demand" for those members. On-demand loading benefits from having all accesses to the members of a `ContainerDecl` be as narrow as possible. If a part of the code only need a member at a specific index, it should say so. If it only needs access to members with a specific name, or a given subclass of `Decl`, then it should say so. A secondary motivation for this change is that there have recently been several changes that added complexity and special cases by introducing code that operated on (and *mutated*) the member list of a container decl in ways that the existing code had never done before. Any code that mutates the member list of a `ContainerDecl` needs to be sure to not disrupt the invariants that the lookup acceleration structures currently rely on. One of the recent changes added a declaration-to-index map to the set of acceleration structures (with different validation/invalidation behavior than the others...) while other recent changes would remove or insert declarations in ways that could change the indices of other declarations in the same container. It is not clear if any of these pieces of code were aware of the others, and the invariants that might be expected or broken along the way. This change bottlenecks the vast majority of accesses to the members of a `ContainerDecl` through the following operations: * Getting a `List` of all of the direct member declarations of a container * Get the number of direct member declarations, and accessing them by index. * Looking up the list of direct member declarations with a given name. * Adding a new direct member declaration to the end of the list. Some other operations are layered on top of those (e.g., getting a list of all the direct member declarations of a given C++ class). These layered operations are still centralized on the `ContainerDecl`, with the intention that we *can* change them to be non-layered implementations if we ever need to for performance (e.g., by building a lookup structure for finding member declarations by their type). The exceptional cases of access/mutation on the direct members of a `ContainerDecl` have also been encapsulated, but rather than expose what would risk appearing like general-purpose accessors (e.g., `removeDecl(d)`, `setDecl(index)`, etc.), these operations have been explicitly named after the specific use case that they serve in the codebase today, to discourage others from using them for more kinds of operations we'd rather not support. These operations have also been given parameter signatures that match their use cases, to make it so that even somebody determined to abuse them would have to invent suitable arguments out of thin air. In the case of the declaration-to-index mapping, this change eliminates that acceleration structure, in favor or slightly more complicated (and possibly inefficient, yes) code at the use site. Over time, it would be good to closely scrutinize each of the use cases that requires more complicated interaction with the members of a `ContainerDecl`, to see whether any of them can be reframed in terms of the more basic operations, or if there is some clean abstraction we can introduce to make operations that mutate the member list feel like... hacky.
* Language version + tuple syntax. (#7230)Yong He2025-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Language version + tuple syntax. * Fix compile error. * regenerate documentation Table of Contents * Fix. * regenerate command line reference * Fix. * Fix. * Fix more test failures. * revert empty line change, * Retrigger CI * #version->#lang * Update source/core/slang-type-text-util.cpp Co-authored-by: ArielG-NV <159081215+ArielG-NV@users.noreply.github.com> * Remove comments. * Fix parsing logic. * Fix parser. * Fix parser. * update test comment * Update options. * regenerate documentation Table of Contents * regenerate command line reference --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: ArielG-NV <159081215+ArielG-NV@users.noreply.github.com>
* Implement throw & catch statements (#6916)Julius Ikkala2025-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Implement throw statement It already existed in the IR, so only parsing, checking and lowering was missing. * Initial catch implementation Likely very broken. * Error out when catch() isn't last in scope * Prevent accessing variables from scope preceding catch As those may actually not be available at that point. * Add IError and use it in Result type lowering * Add diagnostic tests * Allow caught throws in non-throw functions * Fix catch propagating between functions & SPIR-V merge issue * Add test for non-trivial error types * Fix MSVC build * Fix invalid value type from Result lowering * Also lower error handling in templates * Lower result types only after specialization * Attempt to disambiguate error enums by witness table * Revert matching by witness, types should be distinct too * Don't assert valueField when getting Result's error value It may not exist if the function returns void, but getting the error value is still legitimate. * Update tests for new error numbers & get rid of expected.txt * Change catch lowering to resemble breaking a loop ... To make SPIR-V happy. * Fix dead catch blocks and invalid cached dominator tree * More SPIR-V adjustment * Lower catch as two nested loops * Add defer interaction test and revert broken defer changes * Fix enum type when throwing literals * Cleanup and bikeshedding * Document error handling mechanism * Fix table of contents * Use boolean tag in Result<T, E> * Use anyValue storage for Result<T,E> * Remove IError * Fix formatting * Eradicate success values from docs and tests * Use parseModernParamDecl for catch parameter * Implement do-catch syntax * Implement catch-all * Fix formatting * Fix marshalling native calls that throw --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Initial support for immutable lambda expressions. (#6914)Yong He2025-04-30
| | | | | | | | | | | | | * Initial support for immutable lambda expressions. * More diagnostics, and langauge server fix. * Language server fix. * Fix bug identified in review. * Add expected result. * Update expected result.
* Add defer statement (#6619)Julius Ikkala2025-04-06
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* LanguageServer: fix highlighting of wrapper type. (#5968)Yong He2024-12-30
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* formatEllie Hermaszewska2024-10-29
| | | | | | | * format * Minor test fixes * enable checking cpp format in ci
* Properly check switch case. (#5341)Yong He2024-10-20
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* Support `where` clause and type equality constraint. (#4986)Yong He2024-09-05
| | | | | | | | | | | | | | | | | * Support `where` clause. * Fix. * Fix parser. * Enhance test to cover traditional __generic syntax. * Update user-guide. * Support `where` clause on associatedtype. * Fix. * Put in more comments.
* Tuple swizzling, concat, comparison and `countof`. (#4856)Yong He2024-08-19
| | | | | | | | | | | * Tuple swizzling and element access. * Update proposal status. * Cleanup. * Fix merrge error. * Address review.
* Variadic Generics Part 3: language server (#4850)Yong He2024-08-15
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* Language server robustness fix. (#3607)Yong He2024-02-20
| | | | | | | | | * Language server robustness fix. * Allow parameter name to be the same as its type. * fix * Fix test.
* Support pointers in SPIRV. (#3561)Yong He2024-02-08
| | | | | | | | | | | * Support pointers in SPIRV. * Fix test. * Enhance test. * Fix test. * Cleanup.
* Polish language server and documentation. (#3410)Yong He2023-12-13
| | | Co-authored-by: Yong He <yhe@nvidia.com>
* Diagnose for invalid decl nesting + namespace lookup fixes. (#3397)Yong He2023-12-11
| | | | | | | | | | | | | | | | | | | | | | | * Diagnose for invalid decl nesting. * Fix. * Fix. * Fix. * Fix `namespace` lookup and `using` resolution. * fix project files. * revert project files. * Enhance namespace syntax, docs. * Fixes. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Support `include` for pulling file into the current module. (#3377)Yong He2023-12-05
| | | | | | | | | | | * Support `include` for pulling file into the current module. * Add auto-completion, hover info and goto-def support. * Disable warning for missing `module` declaration for now. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Fix ICE when lowering an associatedtype declref from an derived interface. ↵Yong He2023-11-06
| | | | | | | | | | | | | | | | | (#3312) * Fix ICE when lowering an associatedtype declref from an derived interface. * Fixes. * Fix test. * Fix GLSL/SPIRV image subscript swizzle store regression. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Fix attribute highlighting + language server crash. (#3198)Yong He2023-09-08
| | | | | | | | | | | | | * Fix attribute highlighting + language server crash. * Fix wave intrinsic. * Fix. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Add `target_switch` and `intrinsic_asm` statement. (#3154)Yong He2023-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add `target_switch` and `__intrinsic_asm` statement. * Cleanup. * WaveGetActiveMask, WaveGetActiveMask, WaveCountBits. * WaveIsFirstLane. * More wave intrinsics. * wave intrinsics. * merge fix. * Fix. * Fix. * Update test. * update test. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Initial version of spirv_asm block (#3151)Ellie Hermaszewska2023-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Initial version of spirv_asm block * Correct indentation of parent instruction dumping * neater dumping for spirv_asm instructions * Add $$ DollarDollar token * Allow passing addresses to spirv_asm blocks * spirv OpUndef * String literals in spirv asm * OpName for spirv_asm ids * Correct failure in lower spirv_asm * correct position for spirv_asm idents * comment correct * several more tests for spirv_asm blocks * Fill out some unimplemented functions for spirv_asm expressions --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Redesign `DeclRef` and systematic `Val` deduplication (#3049)Yong He2023-08-04
| | | | | | | | | | | | | | | | | | | | | | | * Redesign DeclRef + Deduplicate Val. * Update project files * Fix warning. * Fix. * Fix. * Remove `Val::_equalsImplOverride`. * Rmove `Val::_getHashCodeOverride`. * Remove `semanticVisitor` param from `resolve`. * Cleanups. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* MVP for higher order functions (#2849)Ellie Hermaszewska2023-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * MVP for higher order functions * Add shader subgroup partitioned glsl intrinsics * Implement parsing and checking for tuple types Currently there is no way to do anything useful with them from the source language however * neaten * Correct precedence of function type parsing * neaten * higher order function tests * function types of any arity * Inference for higher order functions * Add second test for unsynchronized params * regenerate vs projects * dx11 -> dx12 for saturated cooperations tests * Disable saturated cooperation tests on vulkan They fail on release builds in CI, not essential for the higher order function work however * remove saturated-cooperation tests * Remove unnecessary assert and clarify control flow in AddDeclRefOverloadCandidates * Add Tuple type name mangling * Use functype keyword to introduce function types * Add more inference tests for hof --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Embed stdlib documentation to AST. (#2851)Yong He2023-04-27
| | | | | | | | | * Embed stdlib documentation to AST. * Extract documentation for attributes. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Fix most of the disabled warnings on gcc/clang (#2839)Ellie Hermaszewska2023-04-26
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* Data flow validation pass for diagnosing derivative loss. (#2523)Yong He2022-11-18
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* Language server improvements for auto-diff. (#2521)Yong He2022-11-16
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* Add syntax for multi-level break. (#2431)Yong He2022-10-06
| | | | | | | | | * Add syntax for multi-level break. * Fix. * Fix. Co-authored-by: Yong He <yhe@nvidia.com>
* Fix regression in check-overload. (#2407)Yong He2022-09-20
| | | | | | | * Fix regression in check-overload. * Make sure language server supports partiallyAppliedGenericExpr. Co-authored-by: Yong He <yhe@nvidia.com>
* Multi parameter `__subscript` (#2392)Yong He2022-09-05
| | | | | | | | | | | * Multi parameter `__subscript` * Fix. * Fix bugs. * Fix. Co-authored-by: Yong He <yhe@nvidia.com>
* `is` and `as` operator and `Optional<T>`. (#2355)Yong He2022-08-10
| | | | | | | * `is` and `as` operator and `Optional<T>`. * Fix. Co-authored-by: Yong He <yhe@nvidia.com>
* Language server pointer type support + add `DLLImport` test (#2350)Yong He2022-08-10
| | | | | | | | | | | | | | | | | | | * Language server pointer type support. + Natvis for AST. * Add completion suggestion for GUID. * Make executable test able to use slang-rt. * Fix gcc argument for rpath. * Fix DLLImport on linux. * Fix windows. * Fix. Co-authored-by: Yong He <yhe@nvidia.com>
* More Language Server Improvements. (#2289)Yong He2022-06-22
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* Language server: document symbols (#2287)Yong He2022-06-16
| | | | | | | * Language Server: Document Symbol outline. * Fix highlighting of extension decls. Co-authored-by: Yong He <yhe@nvidia.com>
* Language Server improvements. (#2269)Yong He2022-06-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Language Server improvements. - Improve parser robustness around `attribute_syntax`. - Exclude instance members in a static query. - Coloring accessors - Improved signature help cursor range check. * Add expected test result. * Language server: support configuring predefined macros. * Fix constructor highlighting. * Improving performance by supporting incremental text change notifications. * Fix UTF16 positions and highlighting of constructor calls. * Add completion suggestions for HLSL semantics. * Fix tests. * Fix: don't skip static variables in a static query. * Include literal init expr value in hover text. * Fix scenarios where completion failed to trigger. * Fixing language server protocol field initializations. Co-authored-by: Yong He <yhe@nvidia.com>
* Major language server features. (#2264)Yong He2022-06-07
* Major language server features. * Include slangd in binary release. * Fix compiler issues. * Fix compiler error. * Completion resolve. * Various improvements. * Update diagnostic test expected output. * Bug fix for source locations. * Adjust diagnostic update frequency. * Update github actions to store artifacts. * Fix infinite parser loop. * Fix parser recovery. * Fix parser recovery. * Update test. * Fix test. * Disable IR gen for language server. * Allow commit characters in auto completion. * Fix lookup for invoke exprs. * More parser robustness fixes. * update solution file Co-authored-by: Yong He <yhe@nvidia.com>