Examples with PathExpressionNode org.kie.dmn.feel.lang.ast.PathExpressionNode used on opensource projects

Example 1 with PathExpressionNode

use of org.kie.dmn.feel.lang.ast.PathExpressionNode in project drools by kiegroup.

the class FEELParserTest method testContextPathExpression.

@Test
public void testContextPathExpression() {
    String inputExpression = "{ x : \"foo\" }.x";
    BaseNode pathBase = parse(inputExpression);
    assertThat(pathBase, is(instanceOf(PathExpressionNode.class)));
    assertThat(pathBase.getText(), is(inputExpression));
    assertThat(pathBase.getResultType(), is(BuiltInType.STRING));
    PathExpressionNode pathExpr = (PathExpressionNode) pathBase;
    assertThat(pathExpr.getExpression(), is(instanceOf(ContextNode.class)));
    assertThat(pathExpr.getExpression().getText(), is("{ x : \"foo\" }"));
    assertThat(pathExpr.getName(), is(instanceOf(NameRefNode.class)));
    assertThat(pathExpr.getName().getText(), is("x"));
}

Example 2 with PathExpressionNode

use of org.kie.dmn.feel.lang.ast.PathExpressionNode in project drools by kiegroup.

the class ASTCompilerVisitor method visit.

@Override
public DirectCompilerResult visit(PathExpressionNode n) {
    DirectCompilerResult expr = n.getExpression().accept(this);
    BaseNode nameNode = n.getName();
    if (nameNode instanceof QualifiedNameNode) {
        QualifiedNameNode qualifiedNameNode = (QualifiedNameNode) n.getName();
        List<Expression> exprs = qualifiedNameNode.getParts().stream().map(name -> new StringLiteralExpr(name.getText())).collect(Collectors.toList());
        return DirectCompilerResult.of(Expressions.path(expr.getExpression(), exprs), // here we could still try to infer the result type, but presently use ANY
        BuiltInType.UNKNOWN).withFD(expr);
    } else {
        return DirectCompilerResult.of(Expressions.path(expr.getExpression(), new StringLiteralExpr(nameNode.getText())), // here we could still try to infer the result type, but presently use ANY
        BuiltInType.UNKNOWN).withFD(expr);
    }
}

Example 3 with PathExpressionNode

use of org.kie.dmn.feel.lang.ast.PathExpressionNode in project drools by kiegroup.

the class FEELParserTest method testContextPathExpression3.

@Test
public void testContextPathExpression3() {
    String inputExpression = "{ first name : \"bob\" }.first name";
    BaseNode pathBase = parse(inputExpression);
    assertThat(pathBase, is(instanceOf(PathExpressionNode.class)));
    assertThat(pathBase.getText(), is(inputExpression));
    assertThat(pathBase.getResultType(), is(BuiltInType.STRING));
    PathExpressionNode pathExpr = (PathExpressionNode) pathBase;
    assertThat(pathExpr.getExpression(), is(instanceOf(ContextNode.class)));
    assertThat(pathExpr.getExpression().getText(), is("{ first name : \"bob\" }"));
    assertThat(pathExpr.getName(), is(instanceOf(NameRefNode.class)));
    assertThat(pathExpr.getName().getText(), is("first name"));
}

Example 4 with PathExpressionNode

use of org.kie.dmn.feel.lang.ast.PathExpressionNode in project drools by kiegroup.

the class FEELParserTest method testContextPathExpression2.

@Test
public void testContextPathExpression2() {
    String inputExpression = "{ x : { y : \"foo\" } }.x.y";
    BaseNode pathBase = parse(inputExpression);
    assertThat(pathBase, is(instanceOf(PathExpressionNode.class)));
    assertThat(pathBase.getText(), is(inputExpression));
    assertThat(pathBase.getResultType(), is(BuiltInType.STRING));
    PathExpressionNode pathExpr = (PathExpressionNode) pathBase;
    assertThat(pathExpr.getExpression(), is(instanceOf(ContextNode.class)));
    assertThat(pathExpr.getExpression().getText(), is("{ x : { y : \"foo\" } }"));
    assertThat(pathExpr.getName(), is(instanceOf(QualifiedNameNode.class)));
    assertThat(pathExpr.getName().getText(), is("x.y"));
}

Example 5 with PathExpressionNode

use of org.kie.dmn.feel.lang.ast.PathExpressionNode in project drools by kiegroup.

the class FEELParserTest method testPathExpression.

@Test
public void testPathExpression() {
    String inputExpression = "[ 10, 15 ].size";
    BaseNode pathBase = parse(inputExpression);
    assertThat(pathBase, is(instanceOf(PathExpressionNode.class)));
    assertThat(pathBase.getText(), is(inputExpression));
    PathExpressionNode pathExpr = (PathExpressionNode) pathBase;
    assertThat(pathExpr.getExpression(), is(instanceOf(ListNode.class)));
    assertThat(pathExpr.getExpression().getText(), is("10, 15"));
    assertThat(pathExpr.getName(), is(instanceOf(NameRefNode.class)));
    assertThat(pathExpr.getName().getText(), is("size"));
}