70 lines
3.0 KiB
JavaScript
70 lines
3.0 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.StackValue = void 0;
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const bit_width_js_1 = require("./bit-width.js");
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const bit_width_util_js_1 = require("./bit-width-util.js");
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const value_type_js_1 = require("./value-type.js");
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const value_type_util_js_1 = require("./value-type-util.js");
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class StackValue {
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constructor(builder, type, width, value = null, offset = 0) {
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this.builder = builder;
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this.type = type;
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this.width = width;
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this.value = value;
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this.offset = offset;
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}
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elementWidth(size, index) {
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if ((0, value_type_util_js_1.isInline)(this.type))
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return this.width;
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for (let i = 0; i < 4; i++) {
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const width = 1 << i;
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const offsetLoc = size + (0, bit_width_util_js_1.paddingSize)(size, width) + index * width;
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const offset = offsetLoc - this.offset;
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const bitWidth = (0, bit_width_util_js_1.uwidth)(offset);
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if (1 << bitWidth === width) {
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return bitWidth;
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}
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}
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throw `Element is unknown. Size: ${size} at index: ${index}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`;
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}
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writeToBuffer(byteWidth) {
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const newOffset = this.builder.computeOffset(byteWidth);
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if (this.type === value_type_js_1.ValueType.FLOAT) {
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if (this.width === bit_width_js_1.BitWidth.WIDTH32) {
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this.builder.view.setFloat32(this.builder.offset, this.value, true);
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}
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else {
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this.builder.view.setFloat64(this.builder.offset, this.value, true);
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}
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}
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else if (this.type === value_type_js_1.ValueType.INT) {
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const bitWidth = (0, bit_width_util_js_1.fromByteWidth)(byteWidth);
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this.builder.pushInt(this.value, bitWidth);
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}
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else if (this.type === value_type_js_1.ValueType.UINT) {
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const bitWidth = (0, bit_width_util_js_1.fromByteWidth)(byteWidth);
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this.builder.pushUInt(this.value, bitWidth);
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}
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else if (this.type === value_type_js_1.ValueType.NULL) {
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this.builder.pushInt(0, this.width);
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}
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else if (this.type === value_type_js_1.ValueType.BOOL) {
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this.builder.pushInt(this.value ? 1 : 0, this.width);
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}
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else {
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throw `Unexpected type: ${this.type}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`;
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}
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this.offset = newOffset;
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}
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storedWidth(width = bit_width_js_1.BitWidth.WIDTH8) {
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return (0, value_type_util_js_1.isInline)(this.type) ? Math.max(width, this.width) : this.width;
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}
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storedPackedType(width = bit_width_js_1.BitWidth.WIDTH8) {
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return (0, value_type_util_js_1.packedType)(this.type, this.storedWidth(width));
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}
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isOffset() {
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return !(0, value_type_util_js_1.isInline)(this.type);
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}
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}
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exports.StackValue = StackValue;
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