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BridgeJS: Gate @_extern/@expose usage behindarch(wasm32)#377

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Merged
kateinoigakukun merged 1 commit intomainfromyt/xcode-link-bjs
Jun 20, 2025
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6 changes: 6 additions & 0 deletionsPlugins/BridgeJS/Sources/BridgeJSTool/ExportSwift.swift
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Original file line numberDiff line numberDiff line change
Expand Up@@ -272,6 +272,7 @@ class ExportSwift {

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -281,6 +282,7 @@ class ExportSwift {
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif
"""

func renderSwiftGlue() -> String? {
Expand DownExpand Up@@ -512,7 +514,11 @@ class ExportSwift {
@_expose(wasm, "\(raw: abiName)")
@_cdecl("\(raw: abiName)")
public func _\(raw: abiName)(\(raw: parameterSignature())) -> \(raw: returnSignature()) {
#if arch(wasm32)
\(body)
#else
fatalError("Only available on WebAssembly")
#endif
}
"""
}
Expand Down
69 changes: 47 additions & 22 deletionsPlugins/BridgeJS/Sources/BridgeJSTool/ImportTS.swift
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Original file line numberDiff line numberDiff line change
Expand Up@@ -241,29 +241,42 @@ struct ImportTS {
}

func renderImportDecl() -> DeclSyntax {
return DeclSyntax(
FunctionDeclSyntax(
attributes: AttributeListSyntax(itemsBuilder: {
"@_extern(wasm, module: \"\(raw: moduleName)\", name: \"\(raw: abiName)\")"
}).with(\.trailingTrivia, .newline),
name: .identifier(abiName),
signature: FunctionSignatureSyntax(
parameterClause: FunctionParameterClauseSyntax(parametersBuilder: {
for param in abiParameterSignatures {
FunctionParameterSyntax(
firstName: .wildcardToken(),
secondName: .identifier(param.name),
type: IdentifierTypeSyntax(name: .identifier(param.type.swiftType))
)
}
}),
returnClause: ReturnClauseSyntax(
arrow: .arrowToken(),
type: IdentifierTypeSyntax(name: .identifier(abiReturnType.map { $0.swiftType } ?? "Void"))
)
let baseDecl = FunctionDeclSyntax(
funcKeyword: .keyword(.func).with(\.trailingTrivia, .space),
name: .identifier(abiName),
signature: FunctionSignatureSyntax(
parameterClause: FunctionParameterClauseSyntax(parametersBuilder: {
for param in abiParameterSignatures {
FunctionParameterSyntax(
firstName: .wildcardToken().with(\.trailingTrivia, .space),
secondName: .identifier(param.name),
type: IdentifierTypeSyntax(name: .identifier(param.type.swiftType))
)
}
}),
returnClause: ReturnClauseSyntax(
arrow: .arrowToken(),
type: IdentifierTypeSyntax(name: .identifier(abiReturnType.map { $0.swiftType } ?? "Void"))
)
)
)
var externDecl = baseDecl
externDecl.attributes = AttributeListSyntax(itemsBuilder: {
"@_extern(wasm, module: \"\(raw: moduleName)\", name: \"\(raw: abiName)\")"
}).with(\.trailingTrivia, .newline)
var stubDecl = baseDecl
stubDecl.body = CodeBlockSyntax {
"""
fatalError("Only available on WebAssembly")
"""
}
return """
#if arch(wasm32)
\(externDecl)
#else
\(stubDecl)
#endif
"""
}

func renderThunkDecl(name: String, parameters: [Parameter], returnType: BridgeType) -> DeclSyntax {
Expand DownExpand Up@@ -328,11 +341,23 @@ struct ImportTS {

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "make_jsstring")
private func _make_jsstring(_ ptr: UnsafePointer<UInt8>?, _ len: Int32) -> Int32
func _make_jsstring(_ ptr: UnsafePointer<UInt8>?, _ len: Int32) -> Int32
#else
func _make_jsstring(_ ptr: UnsafePointer<UInt8>?, _ len: Int32) -> Int32 {
fatalError("Only available on WebAssembly")
}
#endif

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "init_memory_with_result")
private func _init_memory_with_result(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
func _init_memory_with_result(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
#else
func _init_memory_with_result(_ ptr: UnsafePointer<UInt8>?, _ len: Int32) {
fatalError("Only available on WebAssembly")
}
#endif
"""

func renderSwiftThunk(
Expand Down
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,9 +16,14 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_check")
@_cdecl("bjs_check")
public func _bjs_check(a: Int32, b: Float32, c: Float64, d: Int32) -> Void {
#if arch(wasm32)
check(a: Int(a), b: b, c: c, d: d == 1)
#else
fatalError("Only available on WebAssembly")
#endif
}
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,31 +16,48 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_checkInt")
@_cdecl("bjs_checkInt")
public func _bjs_checkInt() -> Int32 {
#if arch(wasm32)
let ret = checkInt()
return Int32(ret)
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_checkFloat")
@_cdecl("bjs_checkFloat")
public func _bjs_checkFloat() -> Float32 {
#if arch(wasm32)
let ret = checkFloat()
return Float32(ret)
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_checkDouble")
@_cdecl("bjs_checkDouble")
public func _bjs_checkDouble() -> Float64 {
#if arch(wasm32)
let ret = checkDouble()
return Float64(ret)
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_checkBool")
@_cdecl("bjs_checkBool")
public func _bjs_checkBool() -> Int32 {
#if arch(wasm32)
let ret = checkBool()
return Int32(ret ? 1 : 0)
#else
fatalError("Only available on WebAssembly")
#endif
}
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,13 +16,18 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_checkString")
@_cdecl("bjs_checkString")
public func _bjs_checkString(aBytes: Int32, aLen: Int32) -> Void {
#if arch(wasm32)
let a = String(unsafeUninitializedCapacity: Int(aLen)) { b in
_init_memory(aBytes, b.baseAddress.unsafelyUnwrapped)
return Int(aLen)
}
checkString(a: a)
#else
fatalError("Only available on WebAssembly")
#endif
}
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,12 +16,17 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_checkString")
@_cdecl("bjs_checkString")
public func _bjs_checkString() -> Void {
#if arch(wasm32)
var ret = checkString()
return ret.withUTF8 { ptr in
_return_string(ptr.baseAddress, Int32(ptr.count))
}
#else
fatalError("Only available on WebAssembly")
#endif
}
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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,41 +16,58 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_takeGreeter")
@_cdecl("bjs_takeGreeter")
public func _bjs_takeGreeter(greeter: UnsafeMutableRawPointer) -> Void {
#if arch(wasm32)
takeGreeter(greeter: Unmanaged<Greeter>.fromOpaque(greeter).takeUnretainedValue())
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_Greeter_init")
@_cdecl("bjs_Greeter_init")
public func _bjs_Greeter_init(nameBytes: Int32, nameLen: Int32) -> UnsafeMutableRawPointer {
#if arch(wasm32)
let name = String(unsafeUninitializedCapacity: Int(nameLen)) { b in
_init_memory(nameBytes, b.baseAddress.unsafelyUnwrapped)
return Int(nameLen)
}
let ret = Greeter(name: name)
return Unmanaged.passRetained(ret).toOpaque()
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_Greeter_greet")
@_cdecl("bjs_Greeter_greet")
public func _bjs_Greeter_greet(_self: UnsafeMutableRawPointer) -> Void {
#if arch(wasm32)
var ret = Unmanaged<Greeter>.fromOpaque(_self).takeUnretainedValue().greet()
return ret.withUTF8 { ptr in
_return_string(ptr.baseAddress, Int32(ptr.count))
}
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_Greeter_changeName")
@_cdecl("bjs_Greeter_changeName")
public func _bjs_Greeter_changeName(_self: UnsafeMutableRawPointer, nameBytes: Int32, nameLen: Int32) -> Void {
#if arch(wasm32)
let name = String(unsafeUninitializedCapacity: Int(nameLen)) { b in
_init_memory(nameBytes, b.baseAddress.unsafelyUnwrapped)
return Int(nameLen)
}
Unmanaged<Greeter>.fromOpaque(_self).takeUnretainedValue().changeName(name: name)
#else
fatalError("Only available on WebAssembly")
#endif
}

@_expose(wasm, "bjs_Greeter_deinit")
Expand Down
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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,10 +16,12 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_throwsSomething")
@_cdecl("bjs_throwsSomething")
public func _bjs_throwsSomething() -> Void {
#if arch(wasm32)
do {
try throwsSomething()
} catch let error {
Expand All@@ -34,4 +37,7 @@ public func _bjs_throwsSomething() -> Void {
}
return
}
#else
fatalError("Only available on WebAssembly")
#endif
}
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

@_spi(JSObject_id) import JavaScriptKit

#if arch(wasm32)
@_extern(wasm, module: "bjs", name: "return_string")
private func _return_string(_ ptr: UnsafePointer<UInt8>?, _ len: Int32)
@_extern(wasm, module: "bjs", name: "init_memory")
Expand All@@ -15,9 +16,14 @@ private func _init_memory(_ sourceId: Int32, _ ptr: UnsafeMutablePointer<UInt8>?
private func _swift_js_retain(_ ptr: Int32) -> Int32
@_extern(wasm, module: "bjs", name: "swift_js_throw")
private func _swift_js_throw(_ id: Int32)
#endif

@_expose(wasm, "bjs_check")
@_cdecl("bjs_check")
public func _bjs_check() -> Void {
#if arch(wasm32)
check()
#else
fatalError("Only available on WebAssembly")
#endif
}
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