88 lines
3.2 KiB
C#
88 lines
3.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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namespace mustache
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{
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/// <summary>
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/// Builds text by combining the output of other generators.
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/// </summary>
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internal sealed class CompoundGenerator : IGenerator
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{
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private readonly TagDefinition _definition;
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private readonly ArgumentCollection _arguments;
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private readonly List<IGenerator> _primaryGenerators;
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private IGenerator _subGenerator;
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/// <summary>
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/// Initializes a new instance of a CompoundGenerator.
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/// </summary>
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/// <param name="definition">The tag that the text is being generated for.</param>
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/// <param name="arguments">The arguments that were passed to the tag.</param>
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public CompoundGenerator(TagDefinition definition, ArgumentCollection arguments)
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{
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_definition = definition;
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_arguments = arguments;
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_primaryGenerators = new List<IGenerator>();
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}
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/// <summary>
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/// Adds the given generator.
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/// </summary>
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/// <param name="generator">The generator to add.</param>
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public void AddGenerator(IGenerator generator)
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{
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addGenerator(generator, false);
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}
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/// <summary>
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/// Adds the given generator, determining whether the generator should
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/// be part of the primary generators or added as an secondary generator.
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/// </summary>
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/// <param name="definition">The tag that the generator is generating text for.</param>
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/// <param name="generator">The generator to add.</param>
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public void AddGenerator(TagDefinition definition, IGenerator generator)
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{
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bool isSubGenerator = _definition.ShouldCreateSecondaryGroup(definition);
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addGenerator(generator, isSubGenerator);
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}
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private void addGenerator(IGenerator generator, bool isSubGenerator)
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{
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if (isSubGenerator)
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{
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_subGenerator = generator;
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}
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else
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{
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_primaryGenerators.Add(generator);
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}
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}
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string IGenerator.GetText(IFormatProvider provider, KeyScope scope)
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{
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StringBuilder builder = new StringBuilder();
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Dictionary<string, object> arguments = _arguments.GetArguments(scope);
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IEnumerable<KeyScope> scopes = _definition.GetChildScopes(scope, arguments);
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List<IGenerator> generators;
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if (_definition.ShouldGeneratePrimaryGroup(arguments))
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{
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generators = _primaryGenerators;
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}
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else
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{
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generators = new List<IGenerator>() { _subGenerator };
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}
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foreach (KeyScope childScope in scopes)
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{
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foreach (IGenerator generator in generators)
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{
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builder.Append(generator.GetText(provider, childScope));
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}
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}
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string innerText = builder.ToString();
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string outerText = _definition.Decorate(provider, innerText, arguments);
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return outerText;
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}
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}
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} |