[FIR] Remove line breaks after context receivers in diagnostic messages

#KT-62944 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -12687,6 +12687,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                     runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextKeywordWithElvis.kt");
                 }
 
+                @Test
+                @TestMetadata("contextReceiverAmbiguity.kt")
+                public void testContextReceiverAmbiguity() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.kt");
+                }
+
                 @Test
                 @TestMetadata("contextReceiverTypeParamsUsage.kt")
                 public void testContextReceiverTypeParamsUsage() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -12687,6 +12687,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                     runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextKeywordWithElvis.kt");
                 }
 
+                @Test
+                @TestMetadata("contextReceiverAmbiguity.kt")
+                public void testContextReceiverAmbiguity() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.kt");
+                }
+
                 @Test
                 @TestMetadata("contextReceiverTypeParamsUsage.kt")
                 public void testContextReceiverTypeParamsUsage() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeOldFrontendDiagnosticsTestGenerated.java

@@ -12681,6 +12681,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
                     runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextKeywordWithElvis.kt");
                 }
 
+                @Test
+                @TestMetadata("contextReceiverAmbiguity.kt")
+                public void testContextReceiverAmbiguity() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.kt");
+                }
+
                 @Test
                 @TestMetadata("contextReceiverTypeParamsUsage.kt")
                 public void testContextReceiverTypeParamsUsage() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiOldFrontendDiagnosticsTestGenerated.java

@@ -12687,6 +12687,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
                     runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextKeywordWithElvis.kt");
                 }
 
+                @Test
+                @TestMetadata("contextReceiverAmbiguity.kt")
+                public void testContextReceiverAmbiguity() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.kt");
+                }
+
                 @Test
                 @TestMetadata("contextReceiverTypeParamsUsage.kt")
                 public void testContextReceiverTypeParamsUsage() throws Exception {

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirDiagnosticRenderers.kt

@@ -45,7 +45,8 @@ object FirDiagnosticRenderers {
                 callArgumentsRenderer = FirCallNoArgumentsRenderer(),
                 modifierRenderer = FirPartialModifierRenderer(),
                 valueParameterRenderer = FirValueParameterRendererNoDefaultValue(),
-                declarationRenderer = FirDeclarationRenderer("local ")
+                declarationRenderer = FirDeclarationRenderer("local "),
+                lineBreakAfterContextReceivers = false,
             ).renderElementAsString(symbol.fir, trim = true)
             is FirTypeParameterSymbol -> symbol.name.asString()
             else -> "???"

compiler/fir/tree/src/org/jetbrains/kotlin/fir/renderer/FirRenderer.kt

@@ -18,8 +18,6 @@ import org.jetbrains.kotlin.fir.expressions.*
 import org.jetbrains.kotlin.fir.expressions.impl.*
 import org.jetbrains.kotlin.fir.references.*
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeLookupTag
-import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
-import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.visitors.FirVisitorVoid
 import org.jetbrains.kotlin.name.StandardClassIds
@@ -48,6 +46,7 @@ class FirRenderer(
     override val fileAnnotationsContainerRenderer: FirFileAnnotationsContainerRenderer? = null,
     override val resolvedNamedReferenceRenderer: FirResolvedNamedReferenceRenderer = FirResolvedNamedReferenceRendererWithLabel(),
     override val resolvedQualifierRenderer: FirResolvedQualifierRenderer = FirResolvedQualifierRendererWithLabel(),
+    private val lineBreakAfterContextReceivers: Boolean = true,
 ) : FirRendererComponents {
 
     override val visitor = Visitor()
@@ -149,7 +148,12 @@ class FirRenderer(
         print("context(")
         renderSeparated(contextReceivers, visitor)
         print(")")
-        printer.newLine()
+
+        if (lineBreakAfterContextReceivers) {
+            printer.newLine()
+        } else {
+            print(" ")
+        }
     }
 
     private fun List<FirTypeParameterRef>.renderTypeParameters() {

compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.diag.txt

@@ -0,0 +1,5 @@
+/contextReceiverAmbiguity.kt:13:9: error: overload resolution ambiguity:
+context(String) public fun foo(x: Comparable<*>): Unit defined in root package in file contextReceiverAmbiguity.kt
+context(String) public fun foo(x: Number): Unit defined in root package in file contextReceiverAmbiguity.kt
+        foo(1)
+        ^

compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.fir.diag.txt

@@ -0,0 +1 @@
+/contextReceiverAmbiguity.kt:(203,206): error: Overload resolution ambiguity between candidates: [context(String) fun foo(x: Comparable<*>): Unit, context(String) fun foo(x: Number): Unit]

compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.kt

@@ -0,0 +1,15 @@
+// FIR_IDENTICAL
+// !LANGUAGE: +ContextReceivers
+// RENDER_DIAGNOSTICS_FULL_TEXT
+
+context(String)
+fun foo(x: Comparable<*>) {}
+
+context(String)
+fun foo(x: Number) {}
+
+fun test() {
+    with("") {
+        <!OVERLOAD_RESOLUTION_AMBIGUITY!>foo<!>(1)
+    }
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -12687,6 +12687,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                     runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextKeywordWithElvis.kt");
                 }
 
+                @Test
+                @TestMetadata("contextReceiverAmbiguity.kt")
+                public void testContextReceiverAmbiguity() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/extensions/contextReceivers/contextReceiverAmbiguity.kt");
+                }
+
                 @Test
                 @TestMetadata("contextReceiverTypeParamsUsage.kt")
                 public void testContextReceiverTypeParamsUsage() throws Exception {