1 /*
2  * Copyright 2016 Google Inc. All Rights Reserved.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.google.turbine.diag;
18 
19 import com.google.common.collect.ImmutableList;
20 import com.google.turbine.diag.TurbineError.ErrorKind;
21 import java.util.LinkedHashSet;
22 import java.util.Set;
23 
24 /** A log that collects diagnostics. */
25 public class TurbineLog {
26 
27   private final Set<TurbineDiagnostic> errors = new LinkedHashSet<>();
28 
withSource(SourceFile source)29   public TurbineLogWithSource withSource(SourceFile source) {
30     return new TurbineLogWithSource(source);
31   }
32 
maybeThrow()33   public void maybeThrow() {
34     if (!errors.isEmpty()) {
35       throw new TurbineError(ImmutableList.copyOf(errors));
36     }
37   }
38 
39   /** A log for a specific source file. */
40   public class TurbineLogWithSource {
41 
42     private final SourceFile source;
43 
TurbineLogWithSource(SourceFile source)44     private TurbineLogWithSource(SourceFile source) {
45       this.source = source;
46     }
47 
error(ErrorKind kind, Object... args)48     public void error(ErrorKind kind, Object... args) {
49       errors.add(TurbineDiagnostic.format(source, kind, args));
50     }
51 
error(int position, ErrorKind kind, Object... args)52     public void error(int position, ErrorKind kind, Object... args) {
53       errors.add(TurbineDiagnostic.format(source, position, kind, args));
54     }
55   }
56 }
57