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package com.oracle.truffle.js.test.instrumentation;

import org.junit.Ignore;
import org.junit.Test;

import com.oracle.truffle.js.nodes.instrumentation.JSTags.DeclareTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.LiteralTag;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.WriteVariableTag;

public class VarDeclarationsTest extends FineGrainedAccessTest {

    @Test
    public void var() {
        evalWithTag("(function() { var b = 42; })();", DeclareTag.class);

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "b");
            assertAttribute(e, DECL_TYPE, "var");
        }).exit();
    }

    @Test
    public void argAndVar() {
        evalWithTag("(function(a) { var b = 42; })();", DeclareTag.class);

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "a");
            assertAttribute(e, DECL_TYPE, "var");
        }).exit();
        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "b");
            assertAttribute(e, DECL_TYPE, "var");
        }).exit();
    }

    @Test
    public void let() {
        evalWithTag("(function() { let b = 42; })();", DeclareTag.class);

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "b");
            assertAttribute(e, DECL_TYPE, "let");
        }).exit();
    }

    @Test
    public void constDeclareVar() {
        evalWithTags("(function() { const b = 42; })();", new Class<?>[]{DeclareTag.class, WriteVariableTag.class});

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "b");
            assertAttribute(e, DECL_TYPE, "const");
        }).exit();
        enter(WriteVariableTag.class, (e1, w1) -> {
            assertAttribute(e1, NAME, "b");
            w1.input(42);
        }).exit();
    }

    @Test
    public void letConstBlock() {
        evalWithTag("(function() { const c = 1; for(var i = 0; i<c; i++) { let b = i; } })();", DeclareTag.class);

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "c");
            assertAttribute(e, DECL_TYPE, "const");
        }).exit();

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "i");
            assertAttribute(e, DECL_TYPE, "var");
        }).exit();

        enter(DeclareTag.class, (e, decl) -> {
            assertAttribute(e, DECL_NAME, "b");
            assertAttribute(e, DECL_TYPE, "let");
        }).exit();
    }

    @Ignore("GR-21919")
    @Test
    public void classDeclareVar() {
        evalWithTags("class Foo{}", new Class<?>[]{DeclareTag.class, WriteVariableTag.class});
        enter(DeclareTag.class, (e2) -> {
            assertAttribute(e2, DECL_NAME, "Foo");
            assertAttribute(e2, DECL_TYPE, "const");
        }).exit();
        enter(WriteVariableTag.class, (e1, w1) -> {
            assertAttribute(e1, NAME, "Foo");
            w1.input(assertJSFunctionInput);
        }).exit();
    }

    @Test
    public void classDeclare() {
        evalWithTags("class Foo{}", new Class<?>[]{DeclareTag.class});

        enter(DeclareTag.class, (e2) -> {
            assertAttribute(e2, DECL_NAME, "Foo");
            assertAttribute(e2, DECL_TYPE, "const");
        }).exit();
    }

    @Test
    public void functionDeclare() {
        evalWithTag("(function() { function foo() {} })();", DeclareTag.class);
        // outer expression must not be entered as declaration
        enter(DeclareTag.class, (e, expr) -> {
            assertAttribute(e, DECL_NAME, "foo");
            assertAttribute(e, DECL_TYPE, "var");
        }).exit();
    }

    @Test
    public void functionDeclareLiteral() {
        evalWithTag("function foo() {};", LiteralTag.class);
        enter(LiteralTag.class, (e, expr) -> {
            assertAttribute(e, LITERAL_TYPE, LiteralTag.Type.FunctionLiteral.name());
        }).exit();
    }

    @Test
    public void generatorDeclare() {
        evalWithTag("function* foo() {};", DeclareTag.class);
        enter(DeclareTag.class, (e, expr) -> {
            assertAttribute(e, DECL_NAME, "foo");
            assertAttribute(e, DECL_TYPE, "var");
        }).exit();
    }

    @Test
    public void generatorDeclareLiteral() {
        evalWithTag("function* foo() {};", LiteralTag.class);
        enter(LiteralTag.class, (e, expr) -> {
            assertAttribute(e, LITERAL_TYPE, LiteralTag.Type.FunctionLiteral.name());
        }).exit();
    }
}