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load("@rules_cc//cc:defs.bzl", "cc_library")

load("@rules_rust//rust:defs.bzl", "rust_binary", "rust_library", "rust_test")

load("@rules_swift//swift:swift.bzl", "swift_library")

load("@rules_swift//swift/toolchains:swift_toolchain.bzl", "swift_runtime")

load("//unified:platforms.bzl", "UNIFIED_SUPPORTED_PLATFORMS")

package(default_visibility = ["//visibility:public"])

config_setting(

name = "static_linux_runtime",

constraint_values = [

"@platforms//os:linux",

"//:static_swift_runtime",

],

)

swift_runtime(

name = "_swift_runtime",

)

filegroup(

name = "swift_runtime",

srcs = select({

":static_linux_runtime": [],

"@platforms//os:linux": [":_swift_runtime"],

"//conditions:default": [],

}),

)

cc_library(

name = "static_runtime_group_start",

linkopts = ["-Wl,--start-group"],

target_compatible_with = ["@platforms//os:linux"],

)

cc_library(

name = "static_runtime_group_end",

linkopts = [

"-lBlocksRuntime",

"-lc",

"-ldispatch",

"-ldl",

"-lm",

"-lpthread",

"-lrt",

"-lutil",

"-Wl,--end-group",

],

target_compatible_with = ["@platforms//os:linux"],

)

# Swift FFI shim: wraps swift-syntax and exposes a small C ABI.

swift_library(

name = "swift_syntax_ffi",

srcs = ["swift/Sources/SwiftSyntaxFFI/SwiftSyntaxFFI.swift"],

module_name = "SwiftSyntaxFFI",

target_compatible_with = UNIFIED_SUPPORTED_PLATFORMS,

deps = [

"@swift-syntax//:SwiftOperators",

"@swift-syntax//:SwiftParser",

"@swift-syntax//:SwiftSyntax",

],

)

# Safe Rust bindings on top of the C ABI. Under Bazel the Swift side comes

# from `:swift_syntax_ffi`.

rust_library(

name = "swift_syntax_rs",

srcs = glob(

["src/**/*.rs"],

exclude = ["src/main.rs"],

),

edition = "2024",

link_deps = select({

":static_linux_runtime": [

# Keep these in linker order; sorting them produces an invalid group.

":static_runtime_group_start",

":swift_syntax_ffi",

":static_runtime_group_end",

],

"@platforms//os:linux": [

":_swift_runtime",

":swift_syntax_ffi",

],

"//conditions:default": [

":swift_syntax_ffi",

],

}),

target_compatible_with = UNIFIED_SUPPORTED_PLATFORMS,

)

# A debugging aid, for looking at the raw swift-syntax JSON for some input:

#

# echo 'let x = 1' | bazel run //unified/swift-syntax-rs:swift-syntax-parse

rust_binary(

name = "swift-syntax-parse",

srcs = ["src/main.rs"],

data = [":swift_runtime"],

edition = "2024",

target_compatible_with = UNIFIED_SUPPORTED_PLATFORMS,

deps = [":swift_syntax_rs"],

)

rust_test(

name = "swift_syntax_rs_test",

size = "small",

crate = ":swift_syntax_rs",

data = [":swift_runtime"],

edition = "2024",

target_compatible_with = UNIFIED_SUPPORTED_PLATFORMS,

)