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package com.seaofnodes.simple;
import com.seaofnodes.simple.node.*;
import com.seaofnodes.simple.type.TypeInteger;
import org.junit.Test;
import static org.junit.Assert.*;
public class Chapter05Test {
@Test
public void testIfStmt() {
Parser parser = new Parser(
"""
int a = 1;
if (arg == 1)
a = arg+2;
else {
a = arg-3;
}
return a;""");
StopNode ret = parser.parse();
assertEquals("return Phi(Region17,(arg+2),(arg-3));", ret.toString());
}
@Test
public void testTest() {
Parser parser = new Parser(
"""
int c = 3;
int b = 2;
if (arg == 1) {
b = 3;
c = 4;
}
return c;""", TypeInteger.BOT);
StopNode ret = parser.parse();
assertEquals("return Phi(Region16,4,3);", ret.toString());
}
@Test
public void testReturn2() {
Parser parser = new Parser(
"""
if( arg==1 )
return 3;
else
return 4;
""", TypeInteger.BOT);
StopNode stop = parser.parse();
assertEquals("Stop[ return 3; return 4; ]", stop.toString());
}
@Test
public void testIfMergeB() {
Parser parser = new Parser(
"""
int a=arg+1;
int b=0;
if( arg==1 )
b=a;
else
b=a+1;
return a+b;""");
StopNode ret = parser.parse();
assertEquals("return ((arg*2)+Phi(Region20,2,3));", ret.toString());
}
@Test
public void testIfMerge2() {
Parser parser = new Parser(
"""
int a=arg+1;
int b=arg+2;
if( arg==1 )
b=b+a;
else
a=b+1;
return a+b;""");
StopNode ret = parser.parse();
assertEquals("return ((Phi(Region31,(arg*2),arg)+arg)+Phi(Region31,4,5));", ret.toString());
}
@Test
public void testMerge3() {
Parser parser = new Parser(
"""
int a=1;
if( arg==1 )
if( arg==2 )
a=2;
else
a=3;
else if( arg==3 )
a=4;
else
a=5;
return a;
""", TypeInteger.BOT);
StopNode stop = parser.parse();
assertEquals("return Phi(Region33,Phi(Region21,2,3),Phi(Region31,4,5));", stop.toString());
}
@Test
public void testMerge4() {
Parser parser = new Parser(
"""
int a=0;
int b=0;
if( arg )
a=1;
if( arg==0 )
b=2;
return arg+a+b;
""", TypeInteger.BOT);
StopNode stop = parser.parse();
assertEquals("return ((arg+Phi(Region13,1,0))+Phi(Region22,2,0));", stop.toString());
}
@Test
public void testMerge5() {
Parser parser = new Parser(
"""
int a=arg==2;
if( arg==1 )
{
a=arg==3;
}
return a;""");
StopNode ret = parser.parse();
assertEquals("return (arg==Phi(Region16,3,2));", ret.toString());
}
@Test
public void testTrue() {
StopNode stop = new Parser("return true;").parse();
assertEquals("return 1;",stop.toString());
}
@Test
public void testHalfDef() {
try {
new Parser("if( arg==1 ) int b=2; return b;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Cannot define a new name on one arm of an if",e.getMessage());
}
}
@Test
public void testHalfDef2() {
try {
new Parser("if( arg==1 ) { int b=2; } else { int b=3; } return b;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Undefined name 'b'",e.getMessage());
}
}
@Test
public void testRegress1() {
try {
new Parser("if(arg==2) int a=1; else int b=2; return a;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Cannot define a new name on one arm of an if",e.getMessage());
}
}
@Test
public void testBadNum() {
try {
new Parser("return 1-;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Syntax error, expected an identifier or expression: ;",e.getMessage());
}
}
@Test
public void testKeyword1() {
try {
new Parser("int true=0; return true;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Expected an identifier, found 'true'",e.getMessage());
}
}
@Test
public void testKeyword2() {
try {
new Parser("int else=arg; if(else) else=2; else else=1; return else;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Expected an identifier, found 'else'",e.getMessage());
}
}
@Test
public void testKeyword3() {
try {
new Parser("int a=1; ififif(arg)inta=2;return a;").parse();
fail();
} catch( RuntimeException e ) {
assertEquals("Syntax error, expected =: (",e.getMessage());
}
}
}
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