1// Copyright 2017 The SwiftShader Authors. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//    http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#ifndef COMPILER_PREPROCESSOR_DIAGNOSTICSBASE_H_
16#define COMPILER_PREPROCESSOR_DIAGNOSTICSBASE_H_
17
18#include <string>
19
20namespace pp
21{
22
23struct SourceLocation;
24
25// Base class for reporting diagnostic messages.
26// Derived classes are responsible for formatting and printing the messages.
27class Diagnostics
28{
29public:
30	// Severity is used to classify info log messages.
31	enum Severity
32	{
33		PP_WARNING,
34		PP_ERROR
35	};
36
37	enum ID
38	{
39		PP_ERROR_BEGIN,
40		PP_INTERNAL_ERROR,
41		PP_OUT_OF_MEMORY,
42		PP_INVALID_CHARACTER,
43		PP_INVALID_NUMBER,
44		PP_INTEGER_OVERFLOW,
45		PP_FLOAT_OVERFLOW,
46		PP_TOKEN_TOO_LONG,
47		PP_INVALID_EXPRESSION,
48		PP_DIVISION_BY_ZERO,
49		PP_EOF_IN_COMMENT,
50		PP_UNEXPECTED_TOKEN,
51		PP_DIRECTIVE_INVALID_NAME,
52		PP_MACRO_NAME_RESERVED,
53		PP_MACRO_REDEFINED,
54		PP_MACRO_PREDEFINED_REDEFINED,
55		PP_MACRO_PREDEFINED_UNDEFINED,
56		PP_MACRO_UNTERMINATED_INVOCATION,
57		PP_MACRO_UNDEFINED_WHILE_INVOKED,
58		PP_MACRO_TOO_FEW_ARGS,
59		PP_MACRO_TOO_MANY_ARGS,
60		PP_MACRO_DUPLICATE_PARAMETER_NAMES,
61		PP_MACRO_INVOCATION_CHAIN_TOO_DEEP,
62		PP_CONDITIONAL_ENDIF_WITHOUT_IF,
63		PP_CONDITIONAL_ELSE_WITHOUT_IF,
64		PP_CONDITIONAL_ELSE_AFTER_ELSE,
65		PP_CONDITIONAL_ELIF_WITHOUT_IF,
66		PP_CONDITIONAL_ELIF_AFTER_ELSE,
67		PP_CONDITIONAL_UNTERMINATED,
68		PP_CONDITIONAL_UNEXPECTED_TOKEN,
69		PP_INVALID_EXTENSION_NAME,
70		PP_INVALID_EXTENSION_BEHAVIOR,
71		PP_INVALID_EXTENSION_DIRECTIVE,
72		PP_INVALID_VERSION_NUMBER,
73		PP_INVALID_VERSION_DIRECTIVE,
74		PP_VERSION_NOT_FIRST_STATEMENT,
75		PP_VERSION_NOT_FIRST_LINE_ESSL3,
76		PP_INVALID_LINE_NUMBER,
77		PP_INVALID_FILE_NUMBER,
78		PP_INVALID_LINE_DIRECTIVE,
79		PP_NON_PP_TOKEN_BEFORE_EXTENSION_ESSL3,
80		PP_UNDEFINED_SHIFT,
81		PP_TOKENIZER_ERROR,
82		PP_ERROR_END,
83
84		PP_WARNING_BEGIN,
85		PP_EOF_IN_DIRECTIVE,
86		PP_UNRECOGNIZED_PRAGMA,
87		PP_NON_PP_TOKEN_BEFORE_EXTENSION_ESSL1,
88		PP_WARNING_MACRO_NAME_RESERVED,
89		PP_WARNING_END
90	};
91
92	virtual ~Diagnostics();
93
94	void report(ID id, const SourceLocation &loc, const std::string &text);
95
96protected:
97	bool isError(ID id);
98	const char *message(ID id);
99	Severity severity(ID id);
100
101	virtual void print(ID id, const SourceLocation &loc, const std::string &text) = 0;
102};
103
104}  // namespace pp
105
106#endif  // COMPILER_PREPROCESSOR_DIAGNOSTICSBASE_H_
107