feat: add jumpop #22

Author: phodal

chapi-domain/src/main/kotlin/chapi/domain/expr/Expression.kt

@@ -69,7 +69,8 @@ sealed class Expression {
         override fun toString() = "[${args.joinToString(", ")}]"
     }
 
-    class SwitchCases(val lhs: ExpressionNode, val cases: Array<CaseOp>, val defaultBlock: ExpressionNode?) : ExpressionNode {
+    class SwitchCases(val lhs: ExpressionNode, val cases: Array<CaseOp>, val defaultBlock: ExpressionNode?) :
+        ExpressionNode {
         override fun toString(): String {
             val casesStr = cases.joinToString("\n") { "case ${it.condition}: ${it.thenBlock}" }
             val defaultStr = if (defaultBlock != null) {
@@ -84,14 +85,37 @@ sealed class Expression {
     class RangeOp(val lhs: ExpressionNode, val rhs: ExpressionNode) : ExpressionNode {
         override fun toString() = "$lhs..$rhs"
     }
-    
+
     class CaseOp(val condition: ExpressionNode, val thenBlock: ExpressionNode) : ExpressionNode {
         override fun toString() = "$condition -> $thenBlock"
     }
-    
+
     class Value(val value: Any) : ExpressionNode {
         override fun toString() = value.toString()
     }
+
+    class JumpOp(val op: JumpOpKind) : ExpressionNode {
+        override fun toString() = op.toString()
+    }
+}
+
+// Throw, Return, Break, Continue
+sealed class JumpOpKind {
+    class Throw(val expr: ExpressionNode) : JumpOpKind() {
+        override fun toString() = "throw $expr"
+    }
+
+    class Return(val expr: ExpressionNode) : JumpOpKind() {
+        override fun toString() = "return $expr"
+    }
+
+    class Break(val expr: ExpressionNode) : JumpOpKind() {
+        override fun toString() = "break $expr"
+    }
+
+    class Continue(val expr: ExpressionNode) : JumpOpKind() {
+        override fun toString() = "continue $expr"
+    }
 }
 
 sealed class AssignOpKind {
@@ -146,6 +170,7 @@ sealed class ComparisonOpKind {
     object Equal : ComparisonOpKind() {
         override fun toString() = "=="
     }
+
     object NotEqual : ComparisonOpKind() {
         override fun toString() = "!="
     }

chapi-domain/src/test/kotlin/chapi/domain/expr/ExpressionTest.kt

@@ -195,4 +195,13 @@ class ExpressionTest {
             ).toString(), "add(1, 2).sub(3)"
         )
     }
+
+    @Test
+    fun returnExprOp() {
+        assertEquals(
+            Expression.JumpOp(
+                op = JumpOpKind.Return(Expression.IntValue(1))
+            ).toString(), "return 1"
+        )
+    }
 }