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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class Chapter16Test {
@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; new _X = { int xx -> x=xx; }; };
_X z = new _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; new _LLI = { !_LLI? !n, int ii -> next=n; i=ii; }; };
!_LLI? !head = null;
while( arg ) {
head = new _LLI(head,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,1,.i,0);", 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; new _LLI = { !_LLI? !n, int a ->
next=n;
int !tmp=a;
while( a > 10 ) {
tmp = tmp + a;
a = a - 1;
}
i=tmp;
}; };
!_LLI? !head = null;
while( arg ) {
head = new _LLI(head,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,1,.i,0);", 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 Test._Square;", code.print());
assertEquals("Test._Square{side=3.0,diag=1.7320508075688772}", Eval2.eval(code, 3));
assertEquals("Test._Square{side=4.0,diag=2.0}", Eval2.eval(code, 4));
}
}
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