1 /*
2  * Copyright 2017 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef SKSL_HCODEGENERATOR
9 #define SKSL_HCODEGENERATOR
10 
11 #include "SkSLCodeGenerator.h"
12 #include "SkSLSectionAndParameterHelper.h"
13 #include "ir/SkSLType.h"
14 #include "ir/SkSLVariable.h"
15 
16 #include <cctype>
17 
18 constexpr const char* kFragmentProcessorHeader =
19 R"(
20 /**************************************************************************************************
21  *** This file was autogenerated from %s.fp; do not modify.
22  **************************************************************************************************/
23 )";
24 
25 namespace SkSL {
26 
27 class HCodeGenerator : public CodeGenerator {
28 public:
29     HCodeGenerator(const Context* context, const Program* program, ErrorReporter* errors,
30                    String name, OutputStream* out);
31 
32     bool generateCode() override;
33 
34     static String ParameterType(const Context& context, const Type& type, const Layout& layout);
35 
36     static String FieldType(const Context& context, const Type& type, const Layout& layout);
37 
FieldName(const char * varName)38     static String FieldName(const char* varName) {
39         return String::printf("f%c%s", toupper(varName[0]), varName + 1);
40     }
41 
42     static String GetHeader(const Program& program, ErrorReporter& errors);
43 
44 private:
45     void writef(const char* s, va_list va) SKSL_PRINTF_LIKE(2, 0);
46 
47     void writef(const char* s, ...) SKSL_PRINTF_LIKE(2, 3);
48 
49     bool writeSection(const char* name, const char* prefix = "");
50 
51     // given a @constructorParams section of e.g. 'int x, float y', writes out "<separator>x, y".
52     // Writes nothing (not even the separator) if there is no @constructorParams section.
53     void writeExtraConstructorParams(const char* separator);
54 
55     void writeMake();
56 
57     void writeConstructor();
58 
59     void writeFields();
60 
61     void failOnSection(const char* section, const char* msg);
62 
63     const Context& fContext;
64     String fName;
65     String fFullName;
66     SectionAndParameterHelper fSectionAndParameterHelper;
67 
68     typedef CodeGenerator INHERITED;
69 };
70 
71 } // namespace SkSL
72 
73 #endif
74