PBS highlight colors

prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/java/p/studio/compiler/pbs/parser/PbsDeclarationParser.java

@@ -574,7 +574,7 @@ final class PbsDeclarationParser {
     }
 
     private PbsToken consumeCallableName() {
-        if (cursor.check(PbsTokenKind.IDENTIFIER) || cursor.check(PbsTokenKind.ERROR)) {
+        if (cursor.check(PbsTokenKind.IDENTIFIER)) {
             return cursor.advance();
         }
         final var token = cursor.peek();

prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/java/p/studio/compiler/pbs/parser/PbsExprParserContext.java

@@ -39,7 +39,7 @@ final class PbsExprParserContext {
     }
 
     PbsToken consumeMemberName(final String message) {
-        if (cursor.check(PbsTokenKind.IDENTIFIER) || cursor.check(PbsTokenKind.ERROR)) {
+        if (cursor.check(PbsTokenKind.IDENTIFIER)) {
             return cursor.advance();
         }
         final var token = cursor.peek();

prometeu-compiler/frontends/prometeu-frontend-pbs/src/main/resources/stdlib/1/sdk/log/main.pbs

@@ -30,7 +30,7 @@ declare service Log
         LowLog.write(3, msg);
     }
 
-    fn error(msg: str) -> void
+    fn failure(msg: str) -> void
     {
         LowLog.write(4, msg);
     }
@@ -55,7 +55,7 @@ declare service Log
         LowLog.write_tag(3, tag, msg);
     }
 
-    fn error(tag: int, msg: str) -> void
+    fn failure(tag: int, msg: str) -> void
     {
         LowLog.write_tag(4, tag, msg);
     }

prometeu-compiler/frontends/prometeu-frontend-pbs/src/test/java/p/studio/compiler/pbs/parser/PbsParserTest.java

@@ -173,7 +173,7 @@ class PbsParserTest {
     }
 
     @Test
-    void shouldParseServiceAndMemberNamesUsingErrorKeyword() {
+    void shouldRejectErrorKeywordAsCallableAndMemberName() {
         final var source = """
             declare service Log {
               fn error(msg: str) -> void { return; }
@@ -181,20 +181,17 @@ class PbsParserTest {
             }
 
             fn run() -> void {
-              Log.error("oops");
+              Log.failure("oops");
-              Log.error(7, "oops");
+              Log.failure(7, "oops");
               return;
             }
             """;
         final var diagnostics = DiagnosticSink.empty();
         final var fileId = new FileId(0);
 
-        final PbsAst.File ast = PbsParser.parse(PbsLexer.lex(source, fileId, diagnostics), fileId, diagnostics);
+        PbsParser.parse(PbsLexer.lex(source, fileId, diagnostics), fileId, diagnostics);
 
-        assertTrue(diagnostics.isEmpty(), "Parser should accept 'error' as callable/member name");
+        assertFalse(diagnostics.isEmpty(), "Parser should reject reserved keyword 'error' as callable/member name");
-        final var service = assertInstanceOf(PbsAst.ServiceDecl.class, ast.topDecls().getFirst());
-        assertEquals(2, service.methods().size());
-        assertEquals("error", service.methods().getFirst().name());
     }
 
     @Test

prometeu-lsp/prometeu-lsp-v1/src/test/java/p/studio/lsp/LspServiceImplTest.java

@@ -219,6 +219,7 @@ final class LspServiceImplTest {
                 pub fn helper() -> void;
                 pub fn helper_result() -> result<MyError> int;
                 pub error MyError;
+                pub service Log;
                 """);
         Files.writeString(src.resolve("helper.pbs"), "fn helper() -> void {}\n");
         Files.writeString(src.resolve("helper_result.pbs"), """
@@ -230,6 +231,11 @@ final class LspServiceImplTest {
                     return ok(1);
                 }
                 """);
+        Files.writeString(src.resolve("log.pbs"), """
+                declare service Log {
+                    fn failure(message: string) -> void;
+                }
+                """);
         return tempDir;
     }
 

prometeu-studio/src/main/java/p/studio/workspaces/editor/EditorDocumentHighlightingRouter.java

@@ -11,16 +11,19 @@ final class EditorDocumentHighlightingRouter {
             final EditorOpenFileBuffer fileBuffer,
             final EditorDocumentPresentation presentation,
             final LspAnalyzeDocumentResult analysis) {
+        final var localHighlighting = presentation.highlight(fileBuffer.content());
         if (fileBuffer.frontendDocument()
                 && analysis != null
                 && presentation.supportsSemanticHighlighting()
                 && !analysis.semanticHighlights().isEmpty()) {
             return new EditorDocumentHighlightingResult(
                     EditorDocumentHighlightOwner.LSP,
-                    EditorDocumentSemanticHighlighting.highlight(fileBuffer.content(), analysis.semanticHighlights()));
+                    EditorDocumentSemanticHighlighting.overlay(
+                            localHighlighting,
+                            EditorDocumentSemanticHighlighting.highlight(fileBuffer.content(), analysis.semanticHighlights())));
         }
         return new EditorDocumentHighlightingResult(
                 EditorDocumentHighlightOwner.LOCAL,
-                presentation.highlight(fileBuffer.content()));
+                localHighlighting);
     }
 }

prometeu-studio/src/main/java/p/studio/workspaces/editor/EditorDocumentPresentationRegistry.java

@@ -1,6 +1,7 @@
 package p.studio.workspaces.editor;
 
 import p.studio.compiler.FrontendRegistryService;
+import p.studio.compiler.models.FrontendSemanticPresentationSpec;
 import p.studio.lsp.dtos.LspSemanticPresentationDTO;
 import p.studio.vfs.messages.VfsDocumentTypeIds;
 import p.studio.workspaces.editor.syntaxhighlight.EditorDocumentSyntaxHighlighting;
@@ -55,21 +56,19 @@ final class EditorDocumentPresentationRegistry {
     private EditorDocumentPresentation frontendPresentation(
             final String normalizedTypeId,
             final LspSemanticPresentationDTO semanticPresentation) {
-        if (semanticPresentation == null) {
+        final var frontendSpec = FrontendRegistryService.getFrontendSpec(normalizedTypeId).orElseThrow();
-            return new EditorDocumentPresentation(
+        final FrontendSemanticPresentationSpec frontendPresentationSpec = frontendSpec.getSemanticPresentation();
-                    normalizedTypeId,
+        final java.util.List<String> stylesheetUrls = resolveFrontendStylesheets(
-                    java.util.List.of(),
+                semanticPresentation == null ? java.util.List.of() : semanticPresentation.resources(),
-                    java.util.List.of(),
+                frontendPresentationSpec.resources());
-                    EditorDocumentSyntaxHighlighting.plainText());
+        final java.util.List<String> semanticKeys = semanticPresentation == null
-        }
+                ? frontendPresentationSpec.semanticKeys()
+                : semanticPresentation.semanticKeys();
         return new EditorDocumentPresentation(
                 normalizedTypeId,
-                semanticPresentation.resources().stream()
+                stylesheetUrls,
-                        .map(EditorDocumentPresentationRegistry::resourceStylesheet)
+                semanticKeys,
-                        .flatMap(Optional::stream)
+                frontendSyntaxHighlighting(normalizedTypeId));
-                        .toList(),
-                semanticPresentation.semanticKeys(),
-                EditorDocumentSyntaxHighlighting.plainText());
     }
 
     private String normalize(final String typeId) {
@@ -93,6 +92,29 @@ final class EditorDocumentPresentationRegistry {
         return Optional.of(resource.toExternalForm());
     }
 
+    private static java.util.List<String> resolveFrontendStylesheets(
+            final java.util.List<String> primaryResources,
+            final java.util.List<String> fallbackResources) {
+        final java.util.List<String> primary = primaryResources.stream()
+                .map(EditorDocumentPresentationRegistry::resourceStylesheet)
+                .flatMap(Optional::stream)
+                .toList();
+        if (!primary.isEmpty()) {
+            return primary;
+        }
+        return fallbackResources.stream()
+                .map(EditorDocumentPresentationRegistry::resourceStylesheet)
+                .flatMap(Optional::stream)
+                .toList();
+    }
+
+    private static EditorDocumentSyntaxHighlighting frontendSyntaxHighlighting(final String normalizedTypeId) {
+        return switch (normalizedTypeId) {
+            case "pbs" -> EditorDocumentSyntaxHighlighting.pbs();
+            default -> EditorDocumentSyntaxHighlighting.plainText();
+        };
+    }
+
     private static String normalizeResourcePath(final String resourcePath) {
         final String normalized = Objects.requireNonNull(resourcePath, "resourcePath").trim();
         if (normalized.isEmpty()) {

prometeu-studio/src/main/java/p/studio/workspaces/editor/syntaxhighlight/EditorDocumentSemanticHighlighting.java

@@ -7,6 +7,7 @@ import p.studio.lsp.dtos.LspHighlightSpanDTO;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.LinkedHashSet;
 import java.util.List;
 
 public final class EditorDocumentSemanticHighlighting {
@@ -40,4 +41,24 @@ public final class EditorDocumentSemanticHighlighting {
         }
         return builder.create();
     }
+
+    public static StyleSpans<Collection<String>> overlay(
+            final StyleSpans<Collection<String>> baseHighlighting,
+            final StyleSpans<Collection<String>> semanticHighlighting) {
+        return baseHighlighting.overlay(semanticHighlighting, EditorDocumentSemanticHighlighting::mergeStyles);
+    }
+
+    private static Collection<String> mergeStyles(
+            final Collection<String> baseStyles,
+            final Collection<String> semanticStyles) {
+        if (baseStyles.isEmpty()) {
+            return semanticStyles;
+        }
+        if (semanticStyles.isEmpty()) {
+            return baseStyles;
+        }
+        final LinkedHashSet<String> merged = new LinkedHashSet<>(baseStyles);
+        merged.addAll(semanticStyles);
+        return List.copyOf(merged);
+    }
 }

prometeu-studio/src/main/java/p/studio/workspaces/editor/syntaxhighlight/EditorDocumentSyntaxHighlighting.java

@@ -36,6 +36,10 @@ public record EditorDocumentSyntaxHighlighting(
         return EditorDocumentSyntaxHighlightingBash.BASH;
     }
 
+    public static EditorDocumentSyntaxHighlighting pbs() {
+        return EditorDocumentSyntaxHighlightingPbs.PBS;
+    }
+
     public StyleSpans<Collection<String>> highlight(final String content) {
         final StyleSpansBuilder<Collection<String>> builder = new StyleSpansBuilder<>();
         if (tokenPattern == null) {

prometeu-studio/src/test/java/p/studio/workspaces/editor/EditorDocumentHighlightingRouterTest.java

@@ -46,7 +46,8 @@ final class EditorDocumentHighlightingRouterTest {
                 analysis);
 
         assertEquals(EditorDocumentHighlightOwner.LSP, result.owner());
-        assertEquals(List.of("editor-semantic-pbs-keyword"), List.copyOf(result.styleSpans().getStyleSpan(0).getStyle()));
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-keyword"));
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-function"));
     }
 
     @Test
@@ -80,7 +81,7 @@ final class EditorDocumentHighlightingRouterTest {
     }
 
     @Test
-    void frontendDocumentsDegradeToLocalWhenSemanticPresentationResourcesAreUnavailable() {
+    void frontendDocumentsFallbackToLocalPbsSyntaxWhenSemanticPresentationResourcesAreUnavailable() {
         final EditorDocumentPresentationRegistry registry = new EditorDocumentPresentationRegistry();
         final EditorOpenFileBuffer fileBuffer = new EditorOpenFileBuffer(
                 Path.of("/tmp/example/src/main.pbs"),
@@ -108,8 +109,9 @@ final class EditorDocumentHighlightingRouterTest {
                 registry.resolve("pbs", analysis.semanticPresentation()),
                 analysis);
 
-        assertEquals(EditorDocumentHighlightOwner.LOCAL, result.owner());
+        assertEquals(EditorDocumentHighlightOwner.LSP, result.owner());
-        assertTrue(result.styleSpans().getStyleSpan(0).getStyle().isEmpty());
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-keyword"));
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-function"));
     }
 
     @Test
@@ -145,6 +147,41 @@ final class EditorDocumentHighlightingRouterTest {
         assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-service"));
     }
 
+    @Test
+    void frontendDocumentsKeepLocalSyntaxForRangesWithoutSemanticCoverage() {
+        final EditorDocumentPresentationRegistry registry = new EditorDocumentPresentationRegistry();
+        final EditorOpenFileBuffer fileBuffer = new EditorOpenFileBuffer(
+                Path.of("/tmp/example/src/main.pbs"),
+                "main.pbs",
+                "pbs",
+                "fn main() -> void { Game.tick(1); }",
+                "LF",
+                true,
+                VfsDocumentAccessMode.READ_ONLY,
+                false);
+
+        final LspAnalyzeDocumentResult analysis = new LspAnalyzeDocumentResult(
+                new LspSessionStateDTO(true, List.of("highlight")),
+                new LspSemanticPresentationDTO(
+                        List.of("pbs-service"),
+                        List.of("/themes/pbs/semantic-highlighting.css")),
+                List.of(),
+                List.of(new LspHighlightSpanDTO(new LspRangeDTO(19, 23), "pbs-service")),
+                List.of(),
+                List.of(),
+                List.of());
+
+        final EditorDocumentHighlightingResult result = EditorDocumentHighlightingRouter.route(
+                fileBuffer,
+                registry.resolve("pbs", analysis.semanticPresentation()),
+                analysis);
+
+        assertEquals(EditorDocumentHighlightOwner.LSP, result.owner());
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-keyword"));
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-service"));
+        assertTrue(containsStyle(result.styleSpans(), "editor-semantic-pbs-function"));
+    }
+
     private boolean containsStyle(
             final org.fxmisc.richtext.model.StyleSpans<Collection<String>> styleSpans,
             final String styleClass) {

prometeu-studio/src/test/java/p/studio/workspaces/editor/EditorDocumentPresentationRegistryTest.java

@@ -4,6 +4,7 @@ import org.junit.jupiter.api.Test;
 import p.studio.lsp.dtos.LspSemanticPresentationDTO;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 final class EditorDocumentPresentationRegistryTest {
@@ -24,7 +25,7 @@ final class EditorDocumentPresentationRegistryTest {
     }
 
     @Test
-    void missingFrontendResourcesDegradeToPlainFrontendPresentation() {
+    void missingFrontendResourcesFallbackToFrontendOwnedPresentationResources() {
         final EditorDocumentPresentation presentation = registry.resolve(
                 "pbs",
                 new LspSemanticPresentationDTO(
@@ -33,7 +34,8 @@ final class EditorDocumentPresentationRegistryTest {
 
         assertEquals("pbs", presentation.styleKey());
         assertEquals(java.util.List.of("pbs-keyword"), presentation.semanticKeys());
-        assertTrue(presentation.stylesheetUrls().isEmpty());
+        assertEquals(1, presentation.stylesheetUrls().size());
+        assertFalse(presentation.highlight("fn main() -> void {}").getStyleSpan(0).getStyle().isEmpty());
     }
 
     @Test

test-projects/main/src/main.pbs

@@ -28,7 +28,7 @@ fn frame() -> void
     if (loading_handle == -1) {
           let t = Assets.load(assets.ui.atlas2, 3);
           if (t.status != 0) {
-              Log.error("load failed");
+              Log.failure("load failed");
           } else {
               loading_handle = t.loading_handle;
               Log.info("state: loading");
@@ -38,12 +38,12 @@ fn frame() -> void
           if (s == 2) {
               let commit_status = Assets.commit(loading_handle);
               if (commit_status != 0) {
-                  Log.error("commit failed");
+                  Log.failure("commit failed");
               }
           } else if (s == 3) {
               let sprite_status = Gfx.set_sprite(3, 10, 150, 150, 0, 0, true, false, false, 1);
               if (sprite_status != 0) {
-                  Log.error("set_sprite failed");
+                  Log.failure("set_sprite failed");
               }
           } else {
               Log.info("state: waiting");
@@ -100,7 +100,7 @@ fn frame() -> void
     }
     else if (total == 50)
     {
-        Log.error("50 is the magic number!");
+        Log.failure("50 is the magic number!");
     }
     else if (total == 15)
     {