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package org.zwobble.hobgoblin.compiler.parser;
import org.junit.jupiter.api.Test;
import org.zwobble.hobgoblin.compiler.ast.DocComment;
import org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStructDefinitionNode;
import org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStructFieldDefinitionNode;
import org.zwobble.hobgoblin.compiler.ast.untyped.UntypedTypeLevelReferenceNode;
import static org.zwobble.hobgoblin.compiler.parser.ParserTesting.parseString;
import static org.zwobble.precisely.AssertThat.assertThat;
import static org.zwobble.precisely.Matchers.*;
public class ParserStructDefinitionTests {
@Test
public void emptyStruct() {
var source = """
struct Point {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedStructDefinitionNode.class,
has("name", UntypedStructDefinitionNode::name, equalTo("Point")),
has("fields", UntypedStructDefinitionNode::fields, isOptionalOf(isSequence()))
));
}
@Test
public void structWithFields() {
var source = """
struct Point {
field x: Int;
field y: Int;
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedStructDefinitionNode.class,
has("fields", UntypedStructDefinitionNode::fields, isOptionalOf(isSequence(
instanceOf(
UntypedStructFieldDefinitionNode.class,
has("name", UntypedStructFieldDefinitionNode::name, equalTo("x")),
has(
"type",
UntypedStructFieldDefinitionNode::type,
instanceOf(
UntypedTypeLevelReferenceNode.class,
has("name", UntypedTypeLevelReferenceNode::name, equalTo("Int"))
)
)
),
instanceOf(
UntypedStructFieldDefinitionNode.class,
has("name", UntypedStructFieldDefinitionNode::name, equalTo("y")),
has(
"type",
UntypedStructFieldDefinitionNode::type,
instanceOf(
UntypedTypeLevelReferenceNode.class,
has("name", UntypedTypeLevelReferenceNode::name, equalTo("Int"))
)
)
)
)))
));
}
@Test
public void singletonStruct() {
var source = """
struct Point {
singleton;
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedStructDefinitionNode.class,
has("fields", UntypedStructDefinitionNode::fields, isOptionalEmpty())
));
}
@Test
public void structWithDocComment() {
var source = """
/// A 2D point.
///
/// Positive y is up.
struct Point {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedStructDefinitionNode.class,
has(
"docComment",
UntypedStructDefinitionNode::docComment,
equalTo(new DocComment("A 2D point.\n\nPositive y is up.\n"))
)
));
}
}
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