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| 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 528572x 528572x 528572x 528572x 528572x 528572x 68943x 68943x 528572x 1x 1x 4697797x 4697797x 1x 1x 459629x 459629x 459629x 459629x 1x 1x 642607x 642607x 1x 1x 883037x 883037x 1x 1x 427696x 427696x 1x 1x 5821008x 5821008x 1x 1x | import {AbstractToken} from "../1_lexer/tokens/abstract_token";
import {ExpressionNode} from "../nodes/expression_node";
import {TokenNode} from "../nodes/token_node";
export class Result {
private readonly tokens: readonly AbstractToken[];
private readonly tokenIndex: number;
private nodes: (ExpressionNode | TokenNode)[] | undefined;
public constructor(tokens: readonly AbstractToken[], tokenIndex: number, nodes?: (ExpressionNode | TokenNode)[]) {
// tokens: all tokens, from the tokenIndex = not yet matched
// nodes: matched tokens
this.tokens = tokens;
this.tokenIndex = tokenIndex;
this.nodes = nodes;
if (this.nodes === undefined) {
this.nodes = [];
}
}
public peek(): AbstractToken {
return this.tokens[this.tokenIndex];
}
public shift(node: ExpressionNode | TokenNode): Result {
const cp = this.nodes!.slice();
cp.push(node);
return new Result(this.tokens, this.tokenIndex + 1, cp);
}
public popNode(): ExpressionNode | TokenNode | undefined {
return this.nodes!.pop();
}
public getNodes(): (ExpressionNode | TokenNode)[] {
return this.nodes!;
}
public setNodes(n: (ExpressionNode | TokenNode)[]): void {
this.nodes = n;
}
public remainingLength(): number {
return this.tokens.length - this.tokenIndex;
}
} |