1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2015 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.syntax;
import static com.google.common.truth.Truth.assertThat;
import com.google.devtools.build.lib.testutil.Scratch;
import com.google.devtools.build.lib.vfs.Path;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/** Tests for @{code SyntaxTreeVisitor} */
@RunWith(JUnit4.class)
public class SyntaxTreeVisitorTest {
private Scratch scratch = new Scratch();
/** Parses the contents of the specified string and returns the AST. */
private BuildFileAST parse(String... lines) throws IOException {
Path file = scratch.file("/a/build/file/BUILD", lines);
return BuildFileAST.parseSkylarkFile(file, null /* reporter */, null /*validationEnvironment*/);
}
@Test
public void everyIdentifierAndParameterIsVisitedInOrder() throws IOException {
final List<String> idents = new ArrayList<>();
final List<String> params = new ArrayList<>();
class IdentVisitor extends SyntaxTreeVisitor {
@Override
public void visit(Identifier node) {
idents.add(node.getName());
}
@Override
public void visit(Parameter<?, ?> node) {
params.add(node.toString());
}
}
BuildFileAST ast =
parse(
"a = b",
"def c(p1, p2=4, **p3):",
" for d in e: f(g)",
" return h + i.j()");
IdentVisitor visitor = new IdentVisitor();
ast.accept(visitor);
assertThat(idents).containsExactly("a", "b", "c", "d", "e", "f", "g", "h", "i", "j").inOrder();
assertThat(params).containsExactly("p1", "p2=4", "**p3").inOrder();
}
}
|
