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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.UntypedSumDefinitionNode;
import org.zwobble.hobgoblin.compiler.ast.untyped.UntypedSumVariantDefinitionNode;
import org.zwobble.hobgoblin.compiler.ast.untyped.UntypedTypeLevelReferenceNode;
import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedEnumDefinitionNodeMatcher.isUntypedEnumDefinitionNode;
import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedStructFieldDefinitionNodeMatcher.isUntypedStructFieldDefinitionNode;
import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedSumDefinitionNodeMatcher.isUntypedSumDefinitionNode;
import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedSumVariantDefinitionNodeMatcher.isUntypedSumVariantDefinitionNode;
import static org.zwobble.hobgoblin.compiler.ast.untyped.UntypedTypeLevelReferenceNodeMatcher.isUntypedTypeLevelReferenceNode;
import static org.zwobble.hobgoblin.compiler.parser.ParserTesting.parseString;
import static org.zwobble.precisely.AssertThat.assertThat;
import static org.zwobble.precisely.Matchers.*;
public class ParserSumDefinitionTests {
@Test
public void nameIsParsed() {
var source = """
sum Shape {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedSumDefinitionNode.class,
has("name", UntypedSumDefinitionNode::name, equalTo("Shape"))
));
}
@Test
public void emptySumHasNoVariants() {
var source = """
sum Shape {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedSumDefinitionNode.class,
has("variants", UntypedSumDefinitionNode::variants, isSequence())
));
}
@Test
public void sumWithVariants() {
var source = """
sum Shape {
variant Rectangle;
variant Triangle;
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedSumDefinitionNode.class,
has("variants", UntypedSumDefinitionNode::variants, isSequence(
has(
"type",
UntypedSumVariantDefinitionNode::type,
instanceOf(
UntypedTypeLevelReferenceNode.class,
has("name", UntypedTypeLevelReferenceNode::name, equalTo("Rectangle"))
)
),
has(
"type",
UntypedSumVariantDefinitionNode::type,
instanceOf(
UntypedTypeLevelReferenceNode.class,
has("name", UntypedTypeLevelReferenceNode::name, equalTo("Triangle"))
)
)
))
));
}
@Test
public void variantIsNotBoxedByDefault() {
var source = """
sum Shape {
variant Rectangle;
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, isUntypedSumDefinitionNode()
.withVariants(isSequence(
isUntypedSumVariantDefinitionNode().withIsBox(equalTo(false))
))
);
}
@Test
public void variantIsBoxedWhenAnnotatedWithBox() {
var source = """
sum Shape {
variant Rectangle box;
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, isUntypedSumDefinitionNode()
.withVariants(isSequence(
isUntypedSumVariantDefinitionNode().withIsBox(equalTo(true))
))
);
}
@Test
public void enumWithDocComment() {
var source = """
/// A small number.
enum SmallNumber {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, isUntypedEnumDefinitionNode()
.withDocComment(equalTo(new DocComment("A small number.\n")))
);
}
@Test
public void emptySumHasNoFields() {
var source = """
sum Shape {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedSumDefinitionNode.class,
has("fields", UntypedSumDefinitionNode::fields, isSequence())
));
}
@Test
public void sumWithFields() {
var source = """
sum Shape {
field height: Int32;
field width: Int64;
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, isUntypedSumDefinitionNode()
.withFields(isSequence(
isUntypedStructFieldDefinitionNode()
.withName(equalTo("height"))
.withType(isUntypedTypeLevelReferenceNode().withName(equalTo("Int32"))),
isUntypedStructFieldDefinitionNode()
.withName(equalTo("width"))
.withType(isUntypedTypeLevelReferenceNode().withName(equalTo("Int64")))
))
);
}
@Test
public void sumWithDocComment() {
var source = """
/// A 2D shape.
sum Shape {
}""";
var node = parseString(
source,
Parser::parseNamespaceStatement
);
assertThat(node, instanceOf(
UntypedSumDefinitionNode.class,
has(
"docComment",
UntypedSumDefinitionNode::docComment,
equalTo(new DocComment("A 2D shape.\n"))
)
));
}
}
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