From 1ef6f0e6b9083748e5b91743f15f10f09c6b8432 Mon Sep 17 00:00:00 2001
From: Elias Haugsbakk <elias.haugsbakk@gmail.com>
Date: Fri, 18 Sep 2026 23:10:31 +0200
Subject: Implement parser creating AST

---
 .../kompilator/parsing/node/expression/Expression.java  | 17 +++++++++++++++++
 .../parsing/node/expression/FunctionCall.java           | 16 ++++++++++++++++
 .../parsing/node/expression/StringLiteral.java          | 12 ++++++++++++
 3 files changed, 45 insertions(+)
 create mode 100644 src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/Expression.java
 create mode 100644 src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java
 create mode 100644 src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/StringLiteral.java

(limited to 'src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression')

diff --git a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/Expression.java b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/Expression.java
new file mode 100644
index 0000000..6ca58b2
--- /dev/null
+++ b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/Expression.java
@@ -0,0 +1,17 @@
+package no.eliashaugsbakk.kompilator.parsing.node.expression;
+
+import no.eliashaugsbakk.kompilator.parsing.node.ASTNode;
+
+/**
+ * Base class for all expression nodes.
+ * An expression is a piece of code that evaluates to a value.
+ * Expressions cannot stand alone as statements; they must be used within statements.
+ * <p>
+ * Examples:
+ * - "Hello"          (string literal expression)
+ * - 42               (number literal expression)
+ * - x + 5            (binary operation expression)
+ * - myFunction()     (function call expression)
+ */
+public abstract class Expression extends ASTNode {
+}
diff --git a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java
new file mode 100644
index 0000000..3c46ec4
--- /dev/null
+++ b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java
@@ -0,0 +1,16 @@
+package no.eliashaugsbakk.kompilator.parsing.node.expression;
+
+import java.util.List;
+
+/**
+ * Represents a function call statement (e.g., print("Hello, world")).
+ */
+public class FunctionCall extends Expression {
+  public String functionName;
+  public List<Expression> arguments;
+
+  public FunctionCall(String functionName, List<Expression> arguments) {
+    this.functionName = functionName;
+    this.arguments = arguments;
+  }
+}
diff --git a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/StringLiteral.java b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/StringLiteral.java
new file mode 100644
index 0000000..67ce405
--- /dev/null
+++ b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/StringLiteral.java
@@ -0,0 +1,12 @@
+package no.eliashaugsbakk.kompilator.parsing.node.expression;
+
+/**
+ * Represents a string literal expression (e.g., "Hello, World").
+ */
+public class StringLiteral extends Expression {
+  public final String value;
+
+  public StringLiteral(String value) {
+    this.value = value;
+  }
+}
-- 
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