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package com.seaofnodes.simple;
import com.seaofnodes.simple.evaluator.Evaluator;
import com.seaofnodes.simple.node.*;
import org.junit.Assert;
import org.junit.Test;
import static org.junit.Assert.*;
public class Chapter08Test {
@Test
public void testEx6() {
Parser parser = new Parser(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
break;
if (arg == 6)
break;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Region37,Phi(Region26,Phi(Loop8,arg,(Phi_arg+1)),Add),Add);", stop.toString());
assertTrue(stop.ret().ctrl() instanceof RegionNode);
Assert.assertEquals(5L, Evaluator.evaluate(stop, 1));
Assert.assertEquals(10L, Evaluator.evaluate(stop, 6));
}
@Test
public void testEx5() {
Parser parser = new Parser(
"""
int a = 1;
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
if (arg == 7)
continue;
a = a + 1;
}
return a;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Loop9,1,Phi(Region43,Phi_a,(Phi_a+1)));", stop.toString());
assertTrue(stop.ret().ctrl() instanceof CProjNode);
}
@Test
public void testEx4() {
Parser parser = new Parser(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
if (arg == 6)
break;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Region35,Phi(Loop8,arg,(Phi_arg+1)),Add);", stop.toString());
assertTrue(stop.ret().ctrl() instanceof RegionNode);
}
@Test
public void testEx3() {
Parser parser = new Parser(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 6)
break;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Region26,Phi(Loop8,arg,(Phi_arg+1)),Add);", stop.toString());
assertTrue(stop.ret().ctrl() instanceof RegionNode);
}
@Test
public void testEx2() {
Parser parser = new Parser(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
if (arg == 6)
continue;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Loop8,arg,(Phi_arg+1));", stop.toString());
assertTrue(stop.ret().ctrl() instanceof CProjNode);
}
@Test
public void testEx1() {
Parser parser = new Parser(
"""
while(arg < 10) {
arg = arg + 1;
if (arg == 5)
continue;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Loop8,arg,(Phi_arg+1));", stop.toString());
assertTrue(stop.ret().ctrl() instanceof CProjNode);
}
@Test
public void testRegress1() {
Parser parser = new Parser(
"""
while( arg < 10 ) {
int a = arg+2;
if( a > 4 )
break;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return arg;", stop.toString());
}
@Test
public void testRegress2() {
Parser parser = new Parser("if(1) return 0; else while(arg>--arg) arg=arg+1; return 0;");
StopNode stop = parser.parse().iterate();
assertEquals("return 0;", stop.toString());
}
@Test
public void testBreakOutsideLoop() {
try {
new Parser("""
if(arg <= 10) {
break;
arg = arg + 1;
}
return arg;
""").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("No active loop for a break or continue",e.getMessage());
}
}
@Test
public void testRegress3() {
Parser parser = new Parser("""
while(arg < 10) {
break;
}
return arg;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return arg;", stop.toString());
}
@Test
public void testRegress4() {
Parser parser = new Parser("""
int a = 1;
while(arg < 10) {
a = a + 1;
if (arg > 2) {
int a = 17;
break;
}
}
return a;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return Phi(Region29,Phi(Loop9,1,(Phi_a+1)),Add);", stop.toString());
assertTrue(stop.ret().ctrl() instanceof RegionNode);
}
@Test
public void testRegress5() {
Parser parser = new Parser("""
int a = 1;
while(1) {
a = a + 1;
if (a<10) continue;
break;
}
return a;
""");
StopNode stop = parser.parse().iterate();
assertEquals("return (Phi(Loop9,1,Add)+1);", stop.toString());
assertTrue(stop.ret().ctrl() instanceof CProjNode prj && prj._idx==1 );
}
}
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