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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
* Copyright 2017 WebAssembly Community Group participants
*
* 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.
*/
#ifndef WABT_SOURCE_ERROR_HANDLER_H_
#define WABT_SOURCE_ERROR_HANDLER_H_
#include <string>
#include "color.h"
#include "common.h"
namespace wabt {
class SourceErrorHandler {
public:
explicit SourceErrorHandler(Location::Type);
virtual ~SourceErrorHandler() {}
// Returns true if the error was handled.
virtual bool OnError(const Location*,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset) = 0;
// OnError will be called with with source_line trimmed to this length.
virtual size_t source_line_max_length() const = 0;
std::string DefaultErrorMessage(const Color&,
const Location*,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset,
int indent);
protected:
Location::Type location_type_;
};
class SourceErrorHandlerNop : public SourceErrorHandler {
public:
SourceErrorHandlerNop();
bool OnError(const Location*,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset) override {
return false;
}
size_t source_line_max_length() const override { return 80; }
};
class SourceErrorHandlerFile : public SourceErrorHandler {
public:
enum class PrintHeader {
Never,
Once,
Always,
};
SourceErrorHandlerFile(FILE* file = stderr,
const std::string& header = std::string(),
PrintHeader print_header = PrintHeader::Never,
size_t source_line_max_length = 80,
Location::Type = Location::Type::Text);
bool OnError(const Location*,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset) override;
size_t source_line_max_length() const override {
return source_line_max_length_;
}
private:
void PrintErrorHeader();
void PrintSourceError();
FILE* file_;
std::string header_;
PrintHeader print_header_;
size_t source_line_max_length_;
Color color_;
};
class SourceErrorHandlerBuffer : public SourceErrorHandler {
public:
explicit SourceErrorHandlerBuffer(size_t source_line_max_length = 80,
Location::Type = Location::Type::Text);
bool OnError(const Location*,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset) override;
size_t source_line_max_length() const override {
return source_line_max_length_;
}
const std::string& buffer() const { return buffer_; }
private:
size_t source_line_max_length_;
std::string buffer_;
Color color_;
};
} // namespace wabt
#endif // WABT_SOURCE_ERROR_HANDLER_H_
|
