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package com.oracle.truffle.js.test.instrumentation;
import org.junit.Test;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.ControlFlowBlockTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.ControlFlowBranchTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.ControlFlowRootTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.LiteralTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.WritePropertyTag;
public class IfStatementTest extends FineGrainedAccessTest {
@Test
public void basicNoBranch() {
evalAllTags("if (!true) {};");
enter(ControlFlowRootTag.class, (e1, ifbody) -> {
assertAttribute(e1, TYPE, ControlFlowRootTag.Type.Conditional.name());
// condition
enter(ControlFlowBranchTag.class, (e2, ifstatement) -> {
assertAttribute(e2, TYPE, ControlFlowBranchTag.Type.Condition.name());
enter(LiteralTag.class).exit();
ifstatement.input(false);
}).exit(assertReturnValue(false));
ifbody.input(false);
// no branch is executed; body returns
}).exit();
}
@Test
public void basicBranch() {
evalAllTags("if (true) { 3; };");
enter(ControlFlowRootTag.class, (e1, ifbody) -> {
assertAttribute(e1, TYPE, ControlFlowRootTag.Type.Conditional.name());
// condition
enter(ControlFlowBranchTag.class, (e2, ifstatement) -> {
assertAttribute(e2, TYPE, ControlFlowBranchTag.Type.Condition.name());
enter(LiteralTag.class).exit();
ifstatement.input(true);
}).exit(assertReturnValue(true));
ifbody.input(true);
// enter if branch
enter(ControlFlowBlockTag.class, (e2, b) -> {
enter(LiteralTag.class).exit(assertReturnValue(3));
}).exit();
ifbody.input(3);
}).exit();
}
@Test
public void basicFilter() {
evalIfBlock("if (true) { 3; };", true, 3);
}
@Test
public void writeWithTernary() {
String src = "var a = {x:0}; a.x = 100 > 0 ? 1 : 0;";
evalWithTag(src, WritePropertyTag.class);
enter(WritePropertyTag.class, (e1, pw1) -> {
assertAttribute(e1, KEY, "a");
pw1.input(assertGlobalObjectInput);
pw1.input(assertJSObjectInput);
}).exit();
enter(WritePropertyTag.class, (e1, pw1) -> {
assertAttribute(e1, KEY, "x");
pw1.input(assertJSObjectInput);
pw1.input(1);
}).exit();
}
@Test
public void testDesugarNeq() {
evalIfBlock("if (42 != 41) { 42; } else { false; };", false, 42);
}
@Test
public void testDesugarStrictNeq() {
evalIfBlock("if (42 !== 41) { 42; } else { false; };", false, 42);
}
private void evalIfBlock(String src, Object condition, Object blockReturns) {
evalWithTags(src, new Class[]{ControlFlowRootTag.class, ControlFlowBlockTag.class, ControlFlowBranchTag.class},
new Class[]{});
enter(ControlFlowRootTag.class, (e1) -> {
assertAttribute(e1, TYPE, ControlFlowRootTag.Type.Conditional.name());
// condition
enter(ControlFlowBranchTag.class, (e) -> {
assertAttribute(e, TYPE, ControlFlowBranchTag.Type.Condition.name());
}).exit(assertReturnValue(condition));
// enter if branch
enter(ControlFlowBlockTag.class).exit(assertReturnValue(blockReturns));
}).exit();
}
}