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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.evaluator.Evaluator;
import com.seaofnodes.simple.node.StopNode;
import org.junit.Ignore;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class Chapter16Test {
@Ignore
@Test
public void testJig() {
CodeGen code = new CodeGen(
"""
return 3.14;
""");
code.parse().opto();
assertEquals("return 3.14;", code.print());
assertEquals("3.14", Eval2.eval(code, 0));
}
@Test
public void testMulti0() {
CodeGen code = new CodeGen(
"""
int x, y;
return x+y;
""");
code.parse().opto();
assertEquals("return 0;", code.print());
assertEquals("0", Eval2.eval(code, 0));
}
@Test
public void testMulti1() {
CodeGen code = new CodeGen(
"""
int x=2, y=x+1;
return x+y;
""");
code.parse().opto();
assertEquals("return 5;", code.print());
assertEquals("5", Eval2.eval(code, 0));
}
@Test
public void testConstruct0() {
CodeGen code = new CodeGen("""
struct X { int x=3; };
X z = new X;
return z.x;
""");
code.parse().opto();
assertEquals("return 3;", code.print());
assertEquals("3", Eval2.eval(code, 0));
}
@Test
public void testConstruct2() {
CodeGen code = new CodeGen("""
struct X { int x=3; };
X z = new X { x = 4; };
return z.x;
""");
code.parse().opto();
assertEquals("return 4;", code.print());
assertEquals("4", Eval2.eval(code, 0));
}
@Test
public void testLinkedList1() {
CodeGen code = new CodeGen(
"""
struct LLI { !LLI? !next; int i; };
!LLI? !head = null;
while( arg ) {
head = new LLI { next=head; i=arg; };
arg = arg-1;
}
if( !head ) return 0;
LLI? next = head.next;
if( !next ) return 1;
return next.i;
""");
code.parse().opto();
assertEquals("return Phi(Region,0,1,.i);", code.print());
assertEquals("0", Eval2.eval(code, 0));
assertEquals("1", Eval2.eval(code, 1));
assertEquals("2", Eval2.eval(code, 3));
}
@Test
public void testLinkedList2() {
CodeGen code = new CodeGen(
"""
struct LLI { !LLI? !next; int i; };
!LLI? !head = null;
while( arg ) {
head = new LLI {
next=head;
// Any old code in the constructor
int !tmp=arg;
while( arg > 10 ) {
tmp = tmp + arg;
arg = arg - 1;
}
i=tmp;
};
arg = arg-1;
}
if( !head ) return 0;
LLI? next = head.next;
if( !next ) return 1;
return next.i;
""");
code.parse().opto();
assertEquals("return Phi(Region,0,1,.i);", code.print());
assertEquals("0", Eval2.eval(code, 0));
assertEquals("1", Eval2.eval(code, 1));
assertEquals("2", Eval2.eval(code, 11));
}
@Test
public void testSquare() {
CodeGen code = new CodeGen(
"""
struct Square {
flt !side = arg;
// Newtons approximation to the square root, computed in a constructor.
// The actual allocation will copy in this result as the initial
// value for 'diag'.
flt !diag = arg*arg/2;
while( 1 ) {
flt next = (side/diag + diag)/2;
if( next == diag ) break;
diag = next;
}
};
return new Square;
""");
code.parse().opto();
assertEquals("return Square;", code.print());
assertEquals("Square{side=3.0,diag=1.7320508075688772}", Eval2.eval(code, 3));
assertEquals("Square{side=4.0,diag=2.0}", Eval2.eval(code, 4));
}
static final String CONSTRUCTOR_MEMORY = """
struct S { int x; int y; };
struct T { int z=arg+40; };
!T !t = new T;
!S !a = new S { x=11; y=7; };
!S !b = new S { x=22; y=9; };
!S !p=a;
if (arg) p=b;
int before=p.x;
!S !c = new S {
x=p.x+1;
{ int i=0; while (i<2) { p.y=p.y+1; i=i+1; } }
y=p.y;
};
p.x=33;
return before*10000+c.x*100+c.y+t.z;
""";
@Test public void testConstructorMemory() {
var code = new CodeGen(CONSTRUCTOR_MEMORY).parse().opto();
assertEquals("111249",Eval2.eval(code,0));
assertEquals("222352",Eval2.eval(code,1));
}
}
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