// FIXME: Swift parser is not enabled on Linux CI yet.
// REQUIRES: OS=macosx

// RUN: %empty-directory(%t)
// RUN: %empty-directory(%t/plugins)
//
//== Build the plugin library
// RUN: %host-build-swift \
// RUN:   -swift-version 5 \
// RUN:   -emit-library \
// RUN:   -o %t/plugins/%target-library-name(MacroDefinition) \
// RUN:   -module-name=MacroDefinition \
// RUN:   %S/Inputs/syntax_macro_definitions.swift \
// RUN:   -g -no-toolchain-stdlib-rpath

// RUN: %host-build-swift \
// RUN:   -swift-version 5 \
// RUN:   -emit-library \
// RUN:   -o %t/plugins/%target-library-name(EvilMacros) \
// RUN:   -module-name=EvilMacros \
// RUN:   %S/Inputs/evil_macro_definitions.swift \
// RUN:   -g -no-toolchain-stdlib-rpath

// RUN: SWIFT_DUMP_PLUGIN_MESSAGING=1 %swift-target-frontend \
// RUN:   -typecheck -verify \
// RUN:   -swift-version 5 -enable-experimental-feature Macros \
// RUN:   -external-plugin-path %t/plugins#%swift-plugin-server \
// RUN:   -module-name MyApp \
// RUN:   %s \
// RUN:   2>&1 | tee %t/macro-expansions.txt

// RUN: %FileCheck -strict-whitespace %s < %t/macro-expansions.txt

// CHECK: ->(plugin:[[#PID1:]]) {"getCapability":{"capability":{"protocolVersion":[[#PROTOCOL_VERSION:]]}}}
// CHECK-NEXT: <-(plugin:[[#PID1]]) {"getCapabilityResult":{"capability":{"features":["load-plugin-library"],"protocolVersion":[[#PROTOCOL_VERSION]]}}}
// CHECK-NEXT: ->(plugin:[[#PID1]]) {"loadPluginLibrary":{"libraryPath":"BUILD_DIR{{.*}}plugins/libMacroDefinition.dylib","moduleName":"MacroDefinition"}}
// CHECK-NEXT: <-(plugin:[[#PID1]]) {"loadPluginLibraryResult":{"diagnostics":[],"loaded":true}}
// CHECK-NEXT: ->(plugin:[[#PID1]]) {"loadPluginLibrary":{"libraryPath":"BUILD_DIR{{.*}}plugins/libEvilMacros.dylib","moduleName":"EvilMacros"}}
// CHECK-NEXT: <-(plugin:[[#PID1]]) {"loadPluginLibraryResult":{"diagnostics":[],"loaded":true}}
// CHECK-NEXT: ->(plugin:[[#PID1]]) {"expandFreestandingMacro":{"discriminator":"${{.*}}","macro":{"moduleName":"MacroDefinition","name":"stringify","typeName":"StringifyMacro"},"macroRole":"expression","syntax":{"kind":"expression","location":{{{.+}}},"source":"#stringify(a + b)"}}}
// CHECK-NEXT: <-(plugin:[[#PID1]]) {"expandMacroResult":{"diagnostics":[],"expandedSource":"(a + b, \"a + b\")"}}
// CHECK-NEXT: ->(plugin:[[#PID1]]) {"expandFreestandingMacro":{"discriminator":"${{.*}}","macro":{"moduleName":"EvilMacros","name":"evil","typeName":"CrashingMacro"},"macroRole":"expression","syntax":{"kind":"expression","location":{{{.+}}},"source":"#evil(42)"}}}
// ^ This crashes the plugin server.

// CHECK: ->(plugin:[[#PID2:]]) {"getCapability":{"capability":{"protocolVersion":[[#PROTOCOL_VERSION]]}}}
// CHECK-NEXT: <-(plugin:[[#PID2]]) {"getCapabilityResult":{"capability":{"features":["load-plugin-library"],"protocolVersion":[[#PROTOCOL_VERSION]]}}}
// CHECK-NEXT: ->(plugin:[[#PID2]]) {"loadPluginLibrary":{"libraryPath":"BUILD_DIR{{.*}}plugins/libMacroDefinition.dylib","moduleName":"MacroDefinition"}}
// CHECK-NEXT: <-(plugin:[[#PID2]]) {"loadPluginLibraryResult":{"diagnostics":[],"loaded":true}}
// CHECK-NEXT: ->(plugin:[[#PID2]]) {"loadPluginLibrary":{"libraryPath":"BUILD_DIR{{.*}}plugins/libEvilMacros.dylib","moduleName":"EvilMacros"}}
// CHECK-NEXT: <-(plugin:[[#PID2]]) {"loadPluginLibraryResult":{"diagnostics":[],"loaded":true}}
// CHECK-NEXT: ->(plugin:[[#PID2]]) {"expandFreestandingMacro":{"discriminator":"${{.*}}","macro":{"moduleName":"MacroDefinition","name":"stringify","typeName":"StringifyMacro"},"macroRole":"expression","syntax":{"kind":"expression","location":{{{.+}}},"source":"#stringify(b + a)"}}}
// CHECK-NEXT: <-(plugin:[[#PID2]]) {"expandMacroResult":{"diagnostics":[],"expandedSource":"(b + a, \"b + a\")"}}

@freestanding(expression) macro stringify<T>(_ value: T) -> (T, String) = #externalMacro(module: "MacroDefinition", type: "StringifyMacro")
@freestanding(expression) macro evil(_ value: Int) -> String = #externalMacro(module: "EvilMacros", type: "CrashingMacro")

func testStringify(a: Int, b: Int) {
  let s1: String = #stringify(a + b).1
  print(s1)

  // expected-error @+1 {{failed to receive result from plugin (from macro 'evil')}}
  let s2: String = #evil(42)
  print(s2)

  let s3: String = #stringify(b + a).1
  print(s3)
}