44 lines
752 B
JavaScript
44 lines
752 B
JavaScript
import {Parser} from "./state"
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const pp = Parser.prototype
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var STATE_KEYS = [
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"lastTokStartLoc",
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"lastTokEndLoc",
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"lastTokStart",
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"lastTokEnd",
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"lineStart",
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"startLoc",
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"curLine",
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"endLoc",
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"start",
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"pos",
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"end",
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"type",
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"value",
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"exprAllowed",
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"potentialArrowAt",
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"currLine",
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"input"
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];
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pp.getState = function () {
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var state = {}
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for (var i = 0; i < STATE_KEYS.length; i++) {
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var key = STATE_KEYS[i]
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state[key] = this[key]
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}
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state.context = this.context.slice()
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return state
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};
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pp.lookahead = function() {
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var old = this.getState();
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this.isLookahead = true
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this.next()
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this.isLookahead = false
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var curr = this.getState();
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for (var key in old) this[key] = old[key];
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return curr;
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};
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