44 lines
1.5 KiB
Plaintext
44 lines
1.5 KiB
Plaintext
import * as YAML from '../src/'
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export interface NodeVisitor {
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visitScalar(node: YAML.YAMLScalar);
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visitMapping(node: YAML.YAMLMapping);
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visitSequence(node: YAML.YAMLSequence);
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visitMap(node: YAML.YamlMap);
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visitAnchorRef(node: YAML.YAMLAnchorReference);
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visitIncludeRef(node: YAML.YAMLNode);
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}
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export abstract class AbstractVisitor implements NodeVisitor {
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// Needed in lieu of `accept` method on nodes
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accept(node: YAML.YAMLNode) {
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switch (node.kind) {
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case YAML.Kind.SCALAR: {
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return this.visitScalar(<YAML.YAMLScalar>node);
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}
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case YAML.Kind.MAP: {
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return this.visitMap(<YAML.YamlMap>node);
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}
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case YAML.Kind.MAPPING: {
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return this.visitMapping(<YAML.YAMLMapping>node);
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}
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case YAML.Kind.SEQ: {
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return this.visitSequence(<YAML.YAMLSequence>node);
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}
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case YAML.Kind.ANCHOR_REF: {
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return this.visitAnchorRef(<YAML.YAMLAnchorReference>node);
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}
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case YAML.Kind.INCLUDE_REF: {
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return this.visitIncludeRef(node);
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}
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}
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throw new Error(`Kind, ${node.kind} not implemented.`);
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}
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abstract visitScalar(node: YAML.YAMLScalar);
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abstract visitMapping(node: YAML.YAMLMapping);
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abstract visitSequence(node: YAML.YAMLSequence);
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abstract visitMap(node: YAML.YamlMap);
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abstract visitAnchorRef(node: YAML.YAMLAnchorReference);
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abstract visitIncludeRef(node: YAML.YAMLNode);
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} |