Examples with Steps org.opendaylight.yangtools.yang.model.api.PathExpression.Steps used on opensource projects

Example 1 with Steps

use of org.opendaylight.yangtools.yang.model.api.PathExpression.Steps in project yangtools by opendaylight.

the class PathExpressionParserTest method testDerefPath.

@Test
public void testDerefPath() {
    // deref() is not valid as per RFC7950, but we tolarate it.
    final PathExpression deref = parser.parseExpression(ctx, "deref(../id)/../type");
    final Steps steps = deref.getSteps();
    assertThat(steps, isA(DerefSteps.class));
    final DerefSteps derefSteps = (DerefSteps) steps;
    assertEquals(YangLocationPath.relative(YangXPathAxis.PARENT.asStep(), YangXPathAxis.CHILD.asStep(UnresolvedQName.unqualified("type"))), derefSteps.getRelativePath());
    assertEquals(YangLocationPath.relative(YangXPathAxis.PARENT.asStep(), YangXPathAxis.CHILD.asStep(UnresolvedQName.unqualified("id"))), derefSteps.getDerefArgument());
}

Example 2 with Steps

use of org.opendaylight.yangtools.yang.model.api.PathExpression.Steps in project yangtools by opendaylight.

the class YT1060Test method before.

@Before
public void before() {
    context = YangParserTestUtils.parseYangResourceDirectory("/yt1060");
    final Module module = context.findModule(CONT.getModule()).get();
    final ContainerSchemaNode cont = (ContainerSchemaNode) module.findDataChildByName(CONT).get();
    final LeafSchemaNode leaf1 = (LeafSchemaNode) cont.findDataChildByName(LEAF1).get();
    path = ((LeafrefTypeDefinition) leaf1.getType()).getPathStatement();
    // Quick checks before we get to the point
    final Steps pathSteps = path.getSteps();
    assertThat(pathSteps, isA(LocationPathSteps.class));
    final YangLocationPath locationPath = ((LocationPathSteps) pathSteps).getLocationPath();
    assertTrue(locationPath.isAbsolute());
    final ImmutableList<Step> steps = locationPath.getSteps();
    assertEquals(2, steps.size());
    steps.forEach(step -> assertThat(step, isA(ResolvedQNameStep.class)));
}

Example 3 with Steps

use of org.opendaylight.yangtools.yang.model.api.PathExpression.Steps in project yangtools by opendaylight.

the class PathExpressionParser method parseExpression.

PathExpression parseExpression(final StmtContext<?, ?, ?> ctx, final String pathArg) {
    final LeafRefPathLexer lexer = new LeafRefPathLexer(CharStreams.fromString(pathArg));
    final LeafRefPathParser parser = new LeafRefPathParser(new CommonTokenStream(lexer));
    final Path_argContext path = SourceExceptionParser.parse(lexer, parser, parser::path_arg, ctx.sourceReference());
    final ParseTree childPath = path.getChild(0);
    final Steps steps;
    if (childPath instanceof Path_strContext) {
        steps = new LocationPathSteps(parsePathStr(ctx, pathArg, (Path_strContext) childPath));
    } else if (childPath instanceof Deref_exprContext) {
        final Deref_exprContext deref = (Deref_exprContext) childPath;
        steps = new DerefSteps(parseRelative(ctx, pathArg, getChild(deref, 0, Deref_function_invocationContext.class).getChild(Relative_pathContext.class, 0)), parseRelative(ctx, pathArg, getChild(deref, deref.getChildCount() - 1, Relative_pathContext.class)));
    } else {
        throw new IllegalStateException("Unsupported child " + childPath);
    }
    return new ParsedPathExpression(steps, pathArg);
}