forked from json-iterator/java
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathCodegenImplArray.java
More file actions
190 lines (182 loc) · 7.68 KB
/
CodegenImplArray.java
File metadata and controls
190 lines (182 loc) · 7.68 KB
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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
package com.jsoniter.output;
import com.jsoniter.spi.ClassInfo;
import com.jsoniter.spi.JsoniterSpi;
import java.lang.reflect.Type;
import java.util.*;
class CodegenImplArray {
public static CodegenResult genCollection(String cacheKey, ClassInfo classInfo) {
Type[] typeArgs = classInfo.typeArgs;
Class clazz = classInfo.clazz;
Type compType = Object.class;
if (typeArgs.length == 0) {
// default to List<Object>
} else if (typeArgs.length == 1) {
compType = typeArgs[0];
} else {
throw new IllegalArgumentException(
"can not bind to generic collection without argument types, " +
"try syntax like TypeLiteral<List<Integer>>{}");
}
if (clazz == List.class) {
clazz = ArrayList.class;
} else if (clazz == Set.class) {
clazz = HashSet.class;
}
if (List.class.isAssignableFrom(clazz)) {
return genList(cacheKey, clazz, compType);
} else {
return genCollection(cacheKey, clazz, compType);
}
}
public static CodegenResult genArray(String cacheKey, ClassInfo classInfo) {
boolean noIndention = JsoniterSpi.getCurrentConfig().indentionStep() == 0;
Class clazz = classInfo.clazz;
Class compType = clazz.getComponentType();
if (compType.isArray()) {
throw new IllegalArgumentException("nested array not supported: " + clazz.getCanonicalName());
}
boolean isCollectionValueNullable = true;
if (cacheKey.endsWith("__value_not_nullable")) {
isCollectionValueNullable = false;
}
if (compType.isPrimitive()) {
isCollectionValueNullable = false;
}
CodegenResult ctx = new CodegenResult();
ctx.append("public static void encode_(java.lang.Object obj, com.jsoniter.output.JsonStream stream) throws java.io.IOException {");
ctx.append(String.format("%s[] arr = (%s[])obj;", compType.getCanonicalName(), compType.getCanonicalName()));
if (noIndention) {
ctx.append("if (arr.length == 0) { return; }");
ctx.buffer('[');
} else {
ctx.append("if (arr.length == 0) { stream.write((byte)'[', (byte)']'); return; }");
ctx.append("stream.writeArrayStart(); stream.writeIndention();");
}
ctx.append("int i = 0;");
ctx.append(String.format("%s e = arr[i++];", compType.getCanonicalName()));
if (isCollectionValueNullable) {
ctx.append("if (e == null) { stream.writeNull(); } else {");
CodegenImplNative.genWriteOp(ctx, "e", compType, true);
ctx.append("}"); // if
} else {
CodegenImplNative.genWriteOp(ctx, "e", compType, false);
}
ctx.append("while (i < arr.length) {");
if (noIndention) {
ctx.append("stream.write(',');");
} else {
ctx.append("stream.writeMore();");
}
ctx.append("e = arr[i++];");
if (isCollectionValueNullable) {
ctx.append("if (e == null) { stream.writeNull(); } else {");
CodegenImplNative.genWriteOp(ctx, "e", compType, true);
ctx.append("}"); // if
} else {
CodegenImplNative.genWriteOp(ctx, "e", compType, false);
}
ctx.append("}"); // while
if (noIndention) {
ctx.buffer(']');
} else {
ctx.append("stream.writeArrayEnd();");
}
ctx.append("}"); // public static void encode_
return ctx;
}
private static CodegenResult genList(String cacheKey, Class clazz, Type compType) {
boolean noIndention = JsoniterSpi.getCurrentConfig().indentionStep() == 0;
boolean isCollectionValueNullable = true;
if (cacheKey.endsWith("__value_not_nullable")) {
isCollectionValueNullable = false;
}
CodegenResult ctx = new CodegenResult();
ctx.append("public static void encode_(java.lang.Object obj, com.jsoniter.output.JsonStream stream) throws java.io.IOException {");
ctx.append("java.util.List list = (java.util.List)obj;");
ctx.append("int size = list.size();");
if (noIndention) {
ctx.append("if (size == 0) { return; }");
ctx.buffer('[');
} else {
ctx.append("if (size == 0) { stream.write((byte)'[', (byte)']'); return; }");
ctx.append("stream.writeArrayStart(); stream.writeIndention();");
}
ctx.append("java.lang.Object e = list.get(0);");
if (isCollectionValueNullable) {
ctx.append("if (e == null) { stream.writeNull(); } else {");
CodegenImplNative.genWriteOp(ctx, "e", compType, true);
ctx.append("}");
} else {
CodegenImplNative.genWriteOp(ctx, "e", compType, false);
}
ctx.append("for (int i = 1; i < size; i++) {");
if (noIndention) {
ctx.append("stream.write(',');");
} else {
ctx.append("stream.writeMore();");
}
ctx.append("e = list.get(i);");
if (isCollectionValueNullable) {
ctx.append("if (e == null) { stream.writeNull(); } else {");
CodegenImplNative.genWriteOp(ctx, "e", compType, true);
ctx.append("}"); // if
} else {
CodegenImplNative.genWriteOp(ctx, "e", compType, false);
}
ctx.append("}"); // for
if (noIndention) {
ctx.buffer(']');
} else {
ctx.append("stream.writeArrayEnd();");
}
ctx.append("}"); // public static void encode_
return ctx;
}
private static CodegenResult genCollection(String cacheKey, Class clazz, Type compType) {
boolean noIndention = JsoniterSpi.getCurrentConfig().indentionStep() == 0;
boolean isCollectionValueNullable = true;
if (cacheKey.endsWith("__value_not_nullable")) {
isCollectionValueNullable = false;
}
CodegenResult ctx = new CodegenResult();
ctx.append("public static void encode_(java.lang.Object obj, com.jsoniter.output.JsonStream stream) throws java.io.IOException {");
ctx.append("java.util.Iterator iter = ((java.util.Collection)obj).iterator();");
if (noIndention) {
ctx.append("if (!iter.hasNext()) { return; }");
ctx.buffer('[');
} else {
ctx.append("if (!iter.hasNext()) { stream.write((byte)'[', (byte)']'); return; }");
ctx.append("stream.writeArrayStart(); stream.writeIndention();");
}
ctx.append("java.lang.Object e = iter.next();");
if (isCollectionValueNullable) {
ctx.append("if (e == null) { stream.writeNull(); } else {");
CodegenImplNative.genWriteOp(ctx, "e", compType, true);
ctx.append("}"); // if
} else {
CodegenImplNative.genWriteOp(ctx, "e", compType, false);
}
ctx.append("while (iter.hasNext()) {");
if (noIndention) {
ctx.append("stream.write(',');");
} else {
ctx.append("stream.writeMore();");
}
ctx.append("e = iter.next();");
if (isCollectionValueNullable) {
ctx.append("if (e == null) { stream.writeNull(); } else {");
CodegenImplNative.genWriteOp(ctx, "e", compType, true);
ctx.append("}"); // if
} else {
CodegenImplNative.genWriteOp(ctx, "e", compType, false);
}
ctx.append("}"); // while
if (noIndention) {
ctx.buffer(']');
} else {
ctx.append("stream.writeArrayEnd();");
}
ctx.append("}"); // public static void encode_
return ctx;
}
}