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package no.eliashaugsbakk.kompilator.IRGeneration;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.util.List;
import no.eliashaugsbakk.kompilator.IRGeneration.Instructions.Alloc;
import no.eliashaugsbakk.kompilator.IRGeneration.Instructions.Call;
import no.eliashaugsbakk.kompilator.IRGeneration.Instructions.Instruction;
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.literal.StringLiteral;
import no.eliashaugsbakk.kompilator.parsing.node.statement.ExpressionStatement;
import org.junit.jupiter.api.Test;
class IRGeneratorTest {
@Test
void singlePrintStatementGeneratesCorrectIR() throws IRGenerationException {
AST ast = buildAST("skriv", "hello");
List<Instruction> ir = new IRGenerator(ast).generate();
assertEquals(2, ir.size());
assertEquals(new Alloc("t0", "streng", false, "hello"), ir.get(0));
assertEquals(new Call("skriv", List.of("t0")), ir.get(1));
}
@Test
void multiplePrintStatementsGenerateSequentialTempVars() throws IRGenerationException {
Program program = new Program(null);
program.addStatement(buildStatement("skriv", "hello"));
program.addStatement(buildStatement("skriv", "world"));
List<Instruction> ir = new IRGenerator(new AST(program)).generate();
assertEquals(4, ir.size());
assertEquals(new Alloc("t0", "streng", false, "hello"), ir.get(0));
assertEquals(new Call("skriv", List.of("t0")), ir.get(1));
assertEquals(new Alloc("t1", "streng", false, "world"), ir.get(2));
assertEquals(new Call("skriv", List.of("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(null);
program.addStatement(buildStatement(functionName, argument));
return program;
}
private ExpressionStatement buildStatement(String functionName, String argument) {
FunctionCall call = new FunctionCall(null, functionName, List.of(new StringLiteral(null, argument)));
return new ExpressionStatement(null, call);
}
}
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