From e7025e11b5718393d776e42ec83bef1521bf8a20 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 10 Jun 2023 10:10:02 +0100
Subject: Compile int literal to stack instruction

---
 src/main/java/org/shedlang/compiler/stackir/StackCompiler.java    | 7 ++++++-
 .../org/shedlang/compiler/stackir/instructions/Instruction.java   | 2 +-
 .../compiler/stackir/instructions/PushIntInstruction.java         | 8 ++++++++
 3 files changed, 15 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/org/shedlang/compiler/stackir/instructions/PushIntInstruction.java

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java b/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
index a5b2b829..33d8f026 100644
--- a/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
+++ b/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
@@ -3,6 +3,7 @@ package org.shedlang.compiler.stackir;
 import org.shedlang.compiler.ast.typed.*;
 import org.shedlang.compiler.stackir.instructions.Instruction;
 import org.shedlang.compiler.stackir.instructions.PushBoolInstruction;
+import org.shedlang.compiler.stackir.instructions.PushIntInstruction;
 
 import java.util.List;
 
@@ -20,7 +21,7 @@ public class StackCompiler {
                 compileBoolLiteral(typedBoolLiteralNode);
 
             case TypedIntLiteralNode typedIntLiteralNode ->
-                throw new UnsupportedOperationException("TODO");
+                compileIntLiteral(typedIntLiteralNode);
 
             case TypedReferenceNode typedReferenceNode ->
                 throw new UnsupportedOperationException("TODO");
@@ -29,4 +30,8 @@ public class StackCompiler {
                 throw new UnsupportedOperationException("TODO");
         };
     }
+
+    private static List<Instruction> compileIntLiteral(TypedIntLiteralNode node) {
+        return List.of(new PushIntInstruction(node.value(), node.source()));
+    }
 }
diff --git a/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java b/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java
index 70c9d7c3..5c5bad79 100644
--- a/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java
+++ b/src/main/java/org/shedlang/compiler/stackir/instructions/Instruction.java
@@ -1,4 +1,4 @@
 package org.shedlang.compiler.stackir.instructions;
 
-public sealed interface Instruction permits PushBoolInstruction {
+public sealed interface Instruction permits PushBoolInstruction, PushIntInstruction {
 }
diff --git a/src/main/java/org/shedlang/compiler/stackir/instructions/PushIntInstruction.java b/src/main/java/org/shedlang/compiler/stackir/instructions/PushIntInstruction.java
new file mode 100644
index 00000000..aa73d817
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/stackir/instructions/PushIntInstruction.java
@@ -0,0 +1,8 @@
+package org.shedlang.compiler.stackir.instructions;
+
+import org.shedlang.compiler.sources.Source;
+
+import java.math.BigInteger;
+
+public record PushIntInstruction(BigInteger value, Source source) implements Instruction {
+}
-- 
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