Implement IR generator

1 files changed, 55 insertions, 0 deletions

diff --git a/src/test/java/no/eliashaugsbakk/kompilator/IRGeneration/IRGeneratorTest.java b/src/test/java/no/eliashaugsbakk/kompilator/IRGeneration/IRGeneratorTest.java
new file mode 100644
index 0000000..16ebc73
--- /dev/null
+++ b/src/test/java/no/eliashaugsbakk/kompilator/IRGeneration/IRGeneratorTest.java
@@ -0,0 +1,55 @@
+package no.eliashaugsbakk.kompilator.IRGeneration;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+import no.eliashaugsbakk.kompilator.parsing.AST;
+import no.eliashaugsbakk.kompilator.parsing.node.Program;
+import no.eliashaugsbakk.kompilator.parsing.node.expression.FunctionCall;
+import no.eliashaugsbakk.kompilator.parsing.node.expression.StringLiteral;
+import no.eliashaugsbakk.kompilator.parsing.node.statement.ExpressionStatement;
+import org.junit.jupiter.api.Test;
+
+class IRGeneratorTest {
+
+  @Test
+  void singlePrintStatementGeneratesCorrectIR() {
+    AST ast = buildAST("skriv", "hello");
+    List<String> ir = new IRGenerator(ast).generate();
+
+    assertEquals(2, ir.size());
+    assertEquals("t0: string = \"hello\"", ir.get(0));
+    assertEquals("print(t0)", ir.get(1));
+  }
+
+  @Test
+  void multiplePrintStatementsGenerateSequentialTempVars() {
+    Program program = new Program();
+    program.addStatement(buildStatement("skriv", "hello"));
+    program.addStatement(buildStatement("skriv", "world"));
+
+    AST ast = new AST(program);
+    List<String> ir = new IRGenerator(ast).generate();
+
+    assertEquals(4, ir.size());
+    assertEquals("t0: string = \"hello\"", ir.get(0));
+    assertEquals("print(t0)", ir.get(1));
+    assertEquals("t1: string = \"world\"", ir.get(2));
+    assertEquals("print(t1)", ir.get(3));
+  }
+
+  private AST buildAST(String functionName, String argument) {
+    return new AST(buildProgram(functionName, argument));
+  }
+
+  private Program buildProgram(String functionName, String argument) {
+    Program program = new Program();
+    program.addStatement(buildStatement(functionName, argument));
+    return program;
+  }
+
+  private ExpressionStatement buildStatement(String functionName, String argument) {
+    FunctionCall call = new FunctionCall(functionName, List.of(new StringLiteral(argument)));
+    return new ExpressionStatement(call);
+  }
+}