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
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
* 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.
*/
#include "src/error-handler.h"
#include <algorithm>
namespace wabt {
ErrorHandler::ErrorHandler(Location::Type location_type)
: location_type_(location_type) {}
std::string ErrorHandler::DefaultErrorMessage(const Color& color,
const Location& loc,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset,
int indent) {
std::string indent_str(indent, ' ');
std::string result = indent_str;
result += color.MaybeBoldCode();
if (loc.filename) {
result += loc.filename;
result += ":";
}
if (location_type_ == Location::Type::Text) {
result += StringPrintf("%d:%d: ", loc.line, loc.first_column);
} else if (loc.offset != kInvalidOffset) {
result += StringPrintf("%07" PRIzx ": ", loc.offset);
}
result += color.MaybeRedCode();
result += "error: ";
result += color.MaybeDefaultCode();
result += error;
result += '\n';
if (!source_line.empty()) {
result += indent_str;
result += source_line;
result += '\n';
result += indent_str;
size_t num_spaces = (loc.first_column - 1) - source_line_column_offset;
size_t num_carets = loc.last_column - loc.first_column;
num_carets = std::min(num_carets, source_line.size() - num_spaces);
num_carets = std::max<size_t>(num_carets, 1);
result.append(num_spaces, ' ');
result += color.MaybeBoldCode();
result += color.MaybeGreenCode();
result.append(num_carets, '^');
result += color.MaybeDefaultCode();
result += '\n';
}
return result;
}
ErrorHandlerNop::ErrorHandlerNop()
// The Location::Type is irrelevant since we never display an error.
: ErrorHandler(Location::Type::Text) {}
ErrorHandlerFile::ErrorHandlerFile(Location::Type location_type,
FILE* file,
const std::string& header,
PrintHeader print_header,
size_t source_line_max_length)
: ErrorHandler(location_type),
file_(file),
header_(header),
print_header_(print_header),
source_line_max_length_(source_line_max_length),
color_(file) {}
bool ErrorHandlerFile::OnError(const Location& loc,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset) {
PrintErrorHeader();
int indent = header_.empty() ? 0 : 2;
std::string message = DefaultErrorMessage(color_, loc, error, source_line,
source_line_column_offset, indent);
fwrite(message.data(), 1, message.size(), file_);
return true;
}
void ErrorHandlerFile::PrintErrorHeader() {
if (header_.empty())
return;
switch (print_header_) {
case PrintHeader::Never:
break;
case PrintHeader::Once:
print_header_ = PrintHeader::Never;
// Fallthrough.
case PrintHeader::Always:
fprintf(file_, "%s:\n", header_.c_str());
break;
}
}
ErrorHandlerBuffer::ErrorHandlerBuffer(Location::Type location_type,
size_t source_line_max_length)
: ErrorHandler(location_type),
source_line_max_length_(source_line_max_length),
color_(nullptr, false) {}
bool ErrorHandlerBuffer::OnError(const Location& loc,
const std::string& error,
const std::string& source_line,
size_t source_line_column_offset) {
buffer_ += DefaultErrorMessage(color_, loc, error, source_line,
source_line_column_offset, 0);
return true;
}
} // namespace wabt
|
