1 /*
2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #pragma once
27 #include <vector>
28 #include <iostream>
29 #include <iomanip>
30 #include "schema_cursor.h"
31
32
33 struct Schema {
34 struct Node {
35 Node *parent;
36 const char *type;
37
38 std::vector<Node *> children;
39
40 Node(Node *parent, const char *type): parent(parent), type(type) {
41 }
42
43 Node *addChild(SchemaCursor *cursor, Node *child) {
44 children.push_back(child);
45 return child->parse(cursor);
46 }
47
48 virtual Node *parse(SchemaCursor *cursor) {
49 cursor->error(std::cerr, __FILE__, __LINE__, "In Node virtual parse!");
50 return nullptr;
51 };
52
53 virtual ~Node() = default;
54 };
55
56
57 struct Array final : Node {
58 bool flexible;
59 long elementCount;
60 char *elementName;
61 Node *elementType;
62
63 explicit Array(Node *paren): Node(paren, "Array"), flexible(false), elementCount(0), elementName(nullptr),
64 elementType(nullptr) {
65 }
66
67 Array *parse(SchemaCursor *cursor) override;
68
69 ~Array() override {
70 delete elementType;
71 delete[] elementName;
72 }
73 };
74
75 struct AbstractNamedNode : Node {
76 char *name;
77 Node *typeNode;
78
79 AbstractNamedNode(Node *parent, const char *type, char *name): Node(parent, type), name(name),
80 typeNode(nullptr) {
81 }
82
83 ~AbstractNamedNode() override {
84 if (name) {
85 delete[] name;
86 }
87
88 if (typeNode) {
89 delete typeNode;
90 }
91 }
92 };
93
94 struct FieldNode : AbstractNamedNode {
95 char *typeName;
96
97 FieldNode(Node *paren, char *name)
98 : AbstractNamedNode(paren, "FieldNode", name), typeName(nullptr) {
99 }
100
101 FieldNode *parse(SchemaCursor *cursor) override;
102
103 ~FieldNode() override {
104 if (typeName) {
105 delete[] name;
106 }
107 }
108 };
109
110 struct AbstractStructOrUnionNode : AbstractNamedNode {
111 char separator;
112 char terminator;
113
114
115 AbstractStructOrUnionNode(Node *parent, const char *type, char separator, char terminator, char *name)
116 : AbstractNamedNode(parent, type, name), separator(separator), terminator(terminator) {
117 }
118
119 AbstractStructOrUnionNode *parse(SchemaCursor *cursor) override;
120
121 ~AbstractStructOrUnionNode() override = default;
122 };
123
124 struct UnionNode final : AbstractStructOrUnionNode {
125 UnionNode(Node *parent, char *name)
126 : AbstractStructOrUnionNode(parent, "UnionNode", '|', '>', name) {
127 }
128
129 UnionNode *parse(SchemaCursor *cursor) override;
130
131 ~UnionNode() override = default;
132 };
133
134 struct StructNode : AbstractStructOrUnionNode {
135 StructNode(Node *parent, const char *type, char *name)
136 : AbstractStructOrUnionNode(parent, type, ',', '}', name) {
137 }
138
139 StructNode(Node *parent, char *name)
140 : StructNode(parent, "StructNode", name) {
141 }
142
143 StructNode *parse(SchemaCursor *cursor) override;
144
145 ~StructNode() override = default;
146 };
147
148 struct ArgStructNode final : StructNode {
149 bool complete;
150
151 explicit ArgStructNode(Node *parent, bool complete, char *name)
152 : StructNode(parent, "ArgStructNode", name), complete(complete) {
153 }
154
155 ~ArgStructNode() override = default;
156 };
157
158
159 struct ArgNode : Node {
160 int idx;
161
162 ArgNode(Node *parent, int idx)
163 : Node(parent, "ArgNode"), idx(idx) {
164 }
165
166 ArgNode *parse(SchemaCursor *cursor) override;
167
168 ~ArgNode() override = default;
169 };
170
171 struct SchemaNode : Node {
172 SchemaNode()
173 : Node(nullptr, "Schema") {
174 }
175
176 SchemaNode *parse(SchemaCursor *cursor) override;
177
178 ~SchemaNode() override = default;
179 };
180
181 static void show(std::ostream &out, char *schema);
182
183 static void show(std::ostream &out, int depth, Node *node);
184
185 static void show(std::ostream &out, SchemaNode *schemaNode);
186 };