Parse native type declarations

1 files changed, 180 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/parser/ParserNativeTypeDeclarationTests.java b/src/test/java/org/shedlang/compiler/parser/ParserNativeTypeDeclarationTests.java
new file mode 100644
index 00000000..900ac1aa
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/parser/ParserNativeTypeDeclarationTests.java
@@ -0,0 +1,180 @@
+package org.shedlang.compiler.parser;
+
+import org.junit.jupiter.api.Test;
+import org.shedlang.compiler.types.Visibility;
+
+import static org.shedlang.compiler.ast.untyped.UntypedNodeMatchers.*;
+import static org.shedlang.compiler.parser.ParserTesting.parseString;
+import static org.zwobble.precisely.AssertThat.assertThat;
+import static org.zwobble.precisely.Matchers.*;
+
+public class ParserNativeTypeDeclarationTests {
+    @Test
+    public void canParseNameOfNativeType() {
+        var source = """
+            native type X {}
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withName("X")
+        );
+    }
+
+    @Test
+    public void defaultVisibilityIsPrivate() {
+        var source = "native type X {}";
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withVisibility(Visibility.PRIVATE)
+        );
+    }
+
+    @Test
+    public void whenHasPubPrefixThenVisibilityIsPublic() {
+        var source = "pub native type X {}";
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withVisibility(Visibility.PUBLIC)
+        );
+    }
+
+    @Test
+    public void canParseNativeTypeWithNoTypeLevelParams() {
+        var source = """
+            native type X {}
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withTypeLevelParams(isOptionalEmpty())
+        );
+    }
+
+    @Test
+    public void canParseNativeTypeWithSingleTypeLevelParam() {
+        var source = """
+            native type X[T1] {}
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withTypeLevelParams(isOptionalOf(isSequence(
+                    isUntypedTypeParamNode("T1")
+                )))
+        );
+    }
+
+    @Test
+    public void canParseNativeTypeWithMultipleTypeLevelParams() {
+        var source = """
+            native type X[T1, T2, T3] {}
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withTypeLevelParams(isOptionalOf(isSequence(
+                    isUntypedTypeParamNode("T1"),
+                    isUntypedTypeParamNode("T2"),
+                    isUntypedTypeParamNode("T3")
+                )))
+        );
+    }
+
+    @Test
+    public void typeLevelParamsCanHaveTrailingComma() {
+        var source = """
+            native type X[T1,] {}
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withTypeLevelParams(isOptionalOf(isSequence(
+                    isUntypedTypeParamNode("T1")
+                )))
+        );
+    }
+
+    @Test
+    public void canParseNativeTypeWithNoMethods() {
+        var source = """
+            native type X {}
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withMethods(isSequence())
+        );
+    }
+
+    @Test
+    public void canParseNativeTypeWithSingleMethod() {
+        var source = """
+            native type X {
+                native fun a(this);
+            }
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withMethods(isSequence(
+                    isUntypedNativeFunctionDeclarationNode().withName("a")
+                ))
+        );
+    }
+
+    @Test
+    public void canParseNativeTypeWithMultipleMethods() {
+        var source = """
+            native type X {
+                native fun a(this);
+                
+                native fun b(this);
+                
+                native fun c(this);
+                
+            }
+        """;
+
+        var node = parseString(source, Parser::parseNamespaceStatement);
+
+        assertThat(
+            node,
+            isUntypedNativeTypeDeclarationNode()
+                .withMethods(isSequence(
+                    isUntypedNativeFunctionDeclarationNode().withName("a"),
+                    isUntypedNativeFunctionDeclarationNode().withName("b"),
+                    isUntypedNativeFunctionDeclarationNode().withName("c")
+                ))
+        );
+    }
+}