Add function to ask for operator name/kind of AST node

Author: karoliineh

src/main/kotlin/c/invariantAST/BinaryExpression.kt

@@ -61,4 +61,6 @@ data class BinaryExpression(val left: Expression, val op: BinaryOp, val right: E
             else -> "$lStr ${op.name} $rStr"
         }
     }
+
+    override fun nodeOpStr(): String = op.name
 }

src/main/kotlin/c/invariantAST/Const.kt

@@ -6,4 +6,5 @@ data class Const(val value: String, val suffix: String?) : Expression() {
     override fun normalize() = this
     override fun toCode() = value + (suffix ?: "")
     override fun toValue() = value + (suffix ?: "")
+    override fun nodeOpStr(): String = "const"
 }

src/main/kotlin/c/invariantAST/Expression.kt

@@ -4,4 +4,5 @@ sealed class Expression : Node() {
     abstract fun normalize(): Expression
     abstract fun toCode(): String
     abstract fun toValue(): String
+    abstract fun nodeOpStr(): String
 }

src/main/kotlin/c/invariantAST/Op.kt

@@ -7,4 +7,5 @@ sealed class Op : Expression() {
     override fun toCode() = name
     override fun toValue() = name
     override fun toString() = name
+    override fun nodeOpStr() = name
 }

src/main/kotlin/c/invariantAST/TernaryExpression.kt

@@ -17,4 +17,5 @@ data class TernaryExpression(val fst: Expression, val snd: Expression, val thrd:
 
     override fun toValue() = str
 
+    override fun nodeOpStr() = "?:"
 }

src/main/kotlin/c/invariantAST/UnaryExpression.kt

@@ -43,4 +43,5 @@ data class UnaryExpression(val op: Op, val exp: Expression, val str: String) : E
             else -> "${op.name}${exp.toCode()}"
         }
 
+    override fun nodeOpStr() = op.name
 }

src/main/kotlin/c/invariantAST/Var.kt

@@ -1,12 +1,13 @@
-package c.invariantAST
-
-import kotlinx.serialization.Serializable
-
-@Serializable
-data class Var(val name: String) : Expression() {
-    override val abstractNodeList: List<AbstractNode> = listOf(dataNode(name))
-    override fun <T> accept(visitor: InvariantAstVisitor<T>) = visitor.visit(this)
-    override fun normalize() = this
-    override fun toCode() = name
-    override fun toValue() = name
+package c.invariantAST
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Var(val name: String) : Expression() {
+    override val abstractNodeList: List<AbstractNode> = listOf(dataNode(name))
+    override fun <T> accept(visitor: InvariantAstVisitor<T>) = visitor.visit(this)
+    override fun normalize() = this
+    override fun toCode() = name
+    override fun toValue() = name
+    override fun nodeOpStr() = "var"
 }