1
|
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
|
2
|
|
3
|
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
|
4
|
|
5
|
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
|
6
|
|
7
|
// TODO(sven): add flow in here
|
8
|
import { isSignature, isNumberLiteral } from "@webassemblyjs/ast";
|
9
|
export function moduleContextFromModuleAST(m) {
|
10
|
var moduleContext = new ModuleContext();
|
11
|
|
12
|
if (!(m.type === "Module")) {
|
13
|
throw new Error('m.type === "Module"' + " error: " + (undefined || "unknown"));
|
14
|
}
|
15
|
|
16
|
m.fields.forEach(function (field) {
|
17
|
switch (field.type) {
|
18
|
case "Start":
|
19
|
{
|
20
|
moduleContext.setStart(field.index);
|
21
|
break;
|
22
|
}
|
23
|
|
24
|
case "TypeInstruction":
|
25
|
{
|
26
|
moduleContext.addType(field);
|
27
|
break;
|
28
|
}
|
29
|
|
30
|
case "Func":
|
31
|
{
|
32
|
moduleContext.addFunction(field);
|
33
|
break;
|
34
|
}
|
35
|
|
36
|
case "Global":
|
37
|
{
|
38
|
moduleContext.defineGlobal(field);
|
39
|
break;
|
40
|
}
|
41
|
|
42
|
case "ModuleImport":
|
43
|
{
|
44
|
switch (field.descr.type) {
|
45
|
case "GlobalType":
|
46
|
{
|
47
|
moduleContext.importGlobal(field.descr.valtype, field.descr.mutability);
|
48
|
break;
|
49
|
}
|
50
|
|
51
|
case "Memory":
|
52
|
{
|
53
|
moduleContext.addMemory(field.descr.limits.min, field.descr.limits.max);
|
54
|
break;
|
55
|
}
|
56
|
|
57
|
case "FuncImportDescr":
|
58
|
{
|
59
|
moduleContext.importFunction(field.descr);
|
60
|
break;
|
61
|
}
|
62
|
|
63
|
case "Table":
|
64
|
{
|
65
|
// FIXME(sven): not implemented yet
|
66
|
break;
|
67
|
}
|
68
|
|
69
|
default:
|
70
|
throw new Error("Unsupported ModuleImport of type " + JSON.stringify(field.descr.type));
|
71
|
}
|
72
|
|
73
|
break;
|
74
|
}
|
75
|
|
76
|
case "Memory":
|
77
|
{
|
78
|
moduleContext.addMemory(field.limits.min, field.limits.max);
|
79
|
break;
|
80
|
}
|
81
|
}
|
82
|
});
|
83
|
return moduleContext;
|
84
|
}
|
85
|
/**
|
86
|
* Module context for type checking
|
87
|
*/
|
88
|
|
89
|
export var ModuleContext =
|
90
|
/*#__PURE__*/
|
91
|
function () {
|
92
|
function ModuleContext() {
|
93
|
_classCallCheck(this, ModuleContext);
|
94
|
|
95
|
this.funcs = [];
|
96
|
this.funcsOffsetByIdentifier = [];
|
97
|
this.types = [];
|
98
|
this.globals = [];
|
99
|
this.globalsOffsetByIdentifier = [];
|
100
|
this.mems = []; // Current stack frame
|
101
|
|
102
|
this.locals = [];
|
103
|
this.labels = [];
|
104
|
this.return = [];
|
105
|
this.debugName = "unknown";
|
106
|
this.start = null;
|
107
|
}
|
108
|
/**
|
109
|
* Set start segment
|
110
|
*/
|
111
|
|
112
|
|
113
|
_createClass(ModuleContext, [{
|
114
|
key: "setStart",
|
115
|
value: function setStart(index) {
|
116
|
this.start = index.value;
|
117
|
}
|
118
|
/**
|
119
|
* Get start function
|
120
|
*/
|
121
|
|
122
|
}, {
|
123
|
key: "getStart",
|
124
|
value: function getStart() {
|
125
|
return this.start;
|
126
|
}
|
127
|
/**
|
128
|
* Reset the active stack frame
|
129
|
*/
|
130
|
|
131
|
}, {
|
132
|
key: "newContext",
|
133
|
value: function newContext(debugName, expectedResult) {
|
134
|
this.locals = [];
|
135
|
this.labels = [expectedResult];
|
136
|
this.return = expectedResult;
|
137
|
this.debugName = debugName;
|
138
|
}
|
139
|
/**
|
140
|
* Functions
|
141
|
*/
|
142
|
|
143
|
}, {
|
144
|
key: "addFunction",
|
145
|
value: function addFunction(func
|
146
|
/*: Func*/
|
147
|
) {
|
148
|
// eslint-disable-next-line prefer-const
|
149
|
var _ref = func.signature || {},
|
150
|
_ref$params = _ref.params,
|
151
|
args = _ref$params === void 0 ? [] : _ref$params,
|
152
|
_ref$results = _ref.results,
|
153
|
result = _ref$results === void 0 ? [] : _ref$results;
|
154
|
|
155
|
args = args.map(function (arg) {
|
156
|
return arg.valtype;
|
157
|
});
|
158
|
this.funcs.push({
|
159
|
args: args,
|
160
|
result: result
|
161
|
});
|
162
|
|
163
|
if (typeof func.name !== "undefined") {
|
164
|
this.funcsOffsetByIdentifier[func.name.value] = this.funcs.length - 1;
|
165
|
}
|
166
|
}
|
167
|
}, {
|
168
|
key: "importFunction",
|
169
|
value: function importFunction(funcimport) {
|
170
|
if (isSignature(funcimport.signature)) {
|
171
|
// eslint-disable-next-line prefer-const
|
172
|
var _funcimport$signature = funcimport.signature,
|
173
|
args = _funcimport$signature.params,
|
174
|
result = _funcimport$signature.results;
|
175
|
args = args.map(function (arg) {
|
176
|
return arg.valtype;
|
177
|
});
|
178
|
this.funcs.push({
|
179
|
args: args,
|
180
|
result: result
|
181
|
});
|
182
|
} else {
|
183
|
if (!isNumberLiteral(funcimport.signature)) {
|
184
|
throw new Error('isNumberLiteral(funcimport.signature)' + " error: " + (undefined || "unknown"));
|
185
|
}
|
186
|
|
187
|
var typeId = funcimport.signature.value;
|
188
|
|
189
|
if (!this.hasType(typeId)) {
|
190
|
throw new Error('this.hasType(typeId)' + " error: " + (undefined || "unknown"));
|
191
|
}
|
192
|
|
193
|
var signature = this.getType(typeId);
|
194
|
this.funcs.push({
|
195
|
args: signature.params.map(function (arg) {
|
196
|
return arg.valtype;
|
197
|
}),
|
198
|
result: signature.results
|
199
|
});
|
200
|
}
|
201
|
|
202
|
if (typeof funcimport.id !== "undefined") {
|
203
|
// imports are first, we can assume their index in the array
|
204
|
this.funcsOffsetByIdentifier[funcimport.id.value] = this.funcs.length - 1;
|
205
|
}
|
206
|
}
|
207
|
}, {
|
208
|
key: "hasFunction",
|
209
|
value: function hasFunction(index) {
|
210
|
return typeof this.getFunction(index) !== "undefined";
|
211
|
}
|
212
|
}, {
|
213
|
key: "getFunction",
|
214
|
value: function getFunction(index) {
|
215
|
if (typeof index !== "number") {
|
216
|
throw new Error("getFunction only supported for number index");
|
217
|
}
|
218
|
|
219
|
return this.funcs[index];
|
220
|
}
|
221
|
}, {
|
222
|
key: "getFunctionOffsetByIdentifier",
|
223
|
value: function getFunctionOffsetByIdentifier(name) {
|
224
|
if (!(typeof name === "string")) {
|
225
|
throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown"));
|
226
|
}
|
227
|
|
228
|
return this.funcsOffsetByIdentifier[name];
|
229
|
}
|
230
|
/**
|
231
|
* Labels
|
232
|
*/
|
233
|
|
234
|
}, {
|
235
|
key: "addLabel",
|
236
|
value: function addLabel(result) {
|
237
|
this.labels.unshift(result);
|
238
|
}
|
239
|
}, {
|
240
|
key: "hasLabel",
|
241
|
value: function hasLabel(index) {
|
242
|
return this.labels.length > index && index >= 0;
|
243
|
}
|
244
|
}, {
|
245
|
key: "getLabel",
|
246
|
value: function getLabel(index) {
|
247
|
return this.labels[index];
|
248
|
}
|
249
|
}, {
|
250
|
key: "popLabel",
|
251
|
value: function popLabel() {
|
252
|
this.labels.shift();
|
253
|
}
|
254
|
/**
|
255
|
* Locals
|
256
|
*/
|
257
|
|
258
|
}, {
|
259
|
key: "hasLocal",
|
260
|
value: function hasLocal(index) {
|
261
|
return typeof this.getLocal(index) !== "undefined";
|
262
|
}
|
263
|
}, {
|
264
|
key: "getLocal",
|
265
|
value: function getLocal(index) {
|
266
|
return this.locals[index];
|
267
|
}
|
268
|
}, {
|
269
|
key: "addLocal",
|
270
|
value: function addLocal(type) {
|
271
|
this.locals.push(type);
|
272
|
}
|
273
|
/**
|
274
|
* Types
|
275
|
*/
|
276
|
|
277
|
}, {
|
278
|
key: "addType",
|
279
|
value: function addType(type) {
|
280
|
if (!(type.functype.type === "Signature")) {
|
281
|
throw new Error('type.functype.type === "Signature"' + " error: " + (undefined || "unknown"));
|
282
|
}
|
283
|
|
284
|
this.types.push(type.functype);
|
285
|
}
|
286
|
}, {
|
287
|
key: "hasType",
|
288
|
value: function hasType(index) {
|
289
|
return this.types[index] !== undefined;
|
290
|
}
|
291
|
}, {
|
292
|
key: "getType",
|
293
|
value: function getType(index) {
|
294
|
return this.types[index];
|
295
|
}
|
296
|
/**
|
297
|
* Globals
|
298
|
*/
|
299
|
|
300
|
}, {
|
301
|
key: "hasGlobal",
|
302
|
value: function hasGlobal(index) {
|
303
|
return this.globals.length > index && index >= 0;
|
304
|
}
|
305
|
}, {
|
306
|
key: "getGlobal",
|
307
|
value: function getGlobal(index) {
|
308
|
return this.globals[index].type;
|
309
|
}
|
310
|
}, {
|
311
|
key: "getGlobalOffsetByIdentifier",
|
312
|
value: function getGlobalOffsetByIdentifier(name) {
|
313
|
if (!(typeof name === "string")) {
|
314
|
throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown"));
|
315
|
}
|
316
|
|
317
|
return this.globalsOffsetByIdentifier[name];
|
318
|
}
|
319
|
}, {
|
320
|
key: "defineGlobal",
|
321
|
value: function defineGlobal(global
|
322
|
/*: Global*/
|
323
|
) {
|
324
|
var type = global.globalType.valtype;
|
325
|
var mutability = global.globalType.mutability;
|
326
|
this.globals.push({
|
327
|
type: type,
|
328
|
mutability: mutability
|
329
|
});
|
330
|
|
331
|
if (typeof global.name !== "undefined") {
|
332
|
this.globalsOffsetByIdentifier[global.name.value] = this.globals.length - 1;
|
333
|
}
|
334
|
}
|
335
|
}, {
|
336
|
key: "importGlobal",
|
337
|
value: function importGlobal(type, mutability) {
|
338
|
this.globals.push({
|
339
|
type: type,
|
340
|
mutability: mutability
|
341
|
});
|
342
|
}
|
343
|
}, {
|
344
|
key: "isMutableGlobal",
|
345
|
value: function isMutableGlobal(index) {
|
346
|
return this.globals[index].mutability === "var";
|
347
|
}
|
348
|
}, {
|
349
|
key: "isImmutableGlobal",
|
350
|
value: function isImmutableGlobal(index) {
|
351
|
return this.globals[index].mutability === "const";
|
352
|
}
|
353
|
/**
|
354
|
* Memories
|
355
|
*/
|
356
|
|
357
|
}, {
|
358
|
key: "hasMemory",
|
359
|
value: function hasMemory(index) {
|
360
|
return this.mems.length > index && index >= 0;
|
361
|
}
|
362
|
}, {
|
363
|
key: "addMemory",
|
364
|
value: function addMemory(min, max) {
|
365
|
this.mems.push({
|
366
|
min: min,
|
367
|
max: max
|
368
|
});
|
369
|
}
|
370
|
}, {
|
371
|
key: "getMemory",
|
372
|
value: function getMemory(index) {
|
373
|
return this.mems[index];
|
374
|
}
|
375
|
}]);
|
376
|
|
377
|
return ModuleContext;
|
378
|
}();
|