WASM: NFC. Rename string import/export functions

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/WasmSymbols.kt

@@ -142,7 +142,7 @@ class WasmSymbols(
 
     val wasmThrow = getInternalFunction("wasmThrow")
 
-    val exportStringRet = getInternalFunction("exportStringRet")
+    val exportString = getInternalFunction("exportString")
     val unsafeGetScratchRawMemory = getInternalFunction("unsafeGetScratchRawMemory")
 
     private val functionNInterfaces = (0..22).map { arity ->

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/compiler.kt

@@ -133,11 +133,11 @@ fun WasmCompiledModuleFragment.generateJs(): String {
         },
 
         println(valueAddr) {
-            console.log(">>>  " + importStringToJs(valueAddr));
+            console.log(">>>  " + importStringFromWasm(valueAddr));
         }
     };
     
-    function importStringToJs(addr) {
+    function importStringFromWasm(addr) {
         const mem16 = new Uint16Array(wasmInstance.exports.memory.buffer);
         const mem32 = new Int32Array(wasmInstance.exports.memory.buffer);
         const len = mem32[addr / 4];

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/BodyGenerator.kt

@@ -371,7 +371,7 @@ class BodyGenerator(val context: WasmFunctionCodegenContext) : IrElementVisitorV
         if (context.irFunction.isExported(context.backendContext) &&
             expression.value.type == irBuiltIns.stringType) {
 
-            body.buildCall(context.referenceFunction(wasmSymbols.exportStringRet))
+            body.buildCall(context.referenceFunction(wasmSymbols.exportString))
         }
 
         body.buildInstr(WasmOp.RETURN)

js/js.tests/test/org/jetbrains/kotlin/js/test/BasicWasmBoxTest.kt

@@ -151,7 +151,7 @@ abstract class BasicWasmBoxTest(
             const wasmModule = new WebAssembly.Module(wasmBinary);
             wasmInstance = new WebAssembly.Instance(wasmModule, { runtime, js_code });
 
-            const actualResult = importStringToJs(wasmInstance.exports.$testFunction());
+            const actualResult = importStringFromWasm(wasmInstance.exports.$testFunction());
             if (actualResult !== "OK")
                 throw `Wrong box result '${'$'}{actualResult}'; Expected "OK"`;
         """.trimIndent()

libraries/stdlib/wasm/internal/kotlin/wasm/internal/ImportExport.kt

@@ -8,7 +8,7 @@ package kotlin.wasm.internal
 // This is called when exported function returns a string. It writes [i32 length, [i16 chars ...]] into a temporary raw memory area and
 // returns pointer to the start of it.
 // Note: currently there is a single temporary raw memory area so it's not possible to export more than one string at a time.
-internal fun exportStringRet(src: String): Int {
+internal fun exportString(src: String): Int {
     val retAddr = unsafeGetScratchRawMemory(INT_SIZE_BYTES + src.length * CHAR_SIZE_BYTES)
     wasm_i32_store(retAddr, src.length)
     unsafeCharArrayToRawMemory(src.toCharArray(), retAddr + INT_SIZE_BYTES)

libraries/stdlib/wasm/src/kotlin/io.kt

@@ -14,7 +14,7 @@ public actual fun println() {
 
 /** Prints the given [message] and the line separator to the standard output stream. */
 public actual fun println(message: Any?) {
-    printlnImpl(exportStringRet(message.toString()))
+    printlnImpl(exportString(message.toString()))
 }
 
 /** Prints the given [message] to the standard output stream. */