21090212907

Committed 17 Jan 2026 06:47AM UTC coverage: 41.207% (+0.02%) from 41.187%

Build # 21090212907

Build Type

push

github

Committed by

MeltyPlayer

Commit Message

Added support for appending formattable strings directly to shader source string builders, preventing a lot of needless GC pressure.

Run Details

6767 of 18495 branches covered (36.59%)

Branch coverage included in aggregate %.

21 of 27 new or added lines in 2 files covered. (77.78%)

28708 of 67594 relevant lines covered (42.47%)

64034.3 hits per line

Source File
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73.33

/FinModelUtility/Fin/Fin/src/util/strings/IndentedInterpolatedStringHandler.cs

﻿using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;

namespace fin.util.strings;

/// <summary>
///   Shamelessly stolen from:
///   https://github.com/pstlnce/indent-writer/blob/1d4743bab04b1f547f06c4625b58448c2ae46b93/IndentWriter/IndentedInterpolatedStringHandler.cs
/// </summary>
[InterpolatedStringHandler]
public readonly struct IndentedInterpolatedStringHandler {
  private readonly IndentedStringBuilder sb_;

  public IndentedInterpolatedStringHandler(int literalLength,
                                           int formattedCount,
                                           IndentedStringBuilder sb)
    => this.sb_ = sb;

  public void AppendLiteral(ReadOnlySpan<char> literal)
    => this.sb_.Append(literal);

  public void AppendFormatted<T>(T value) {
    // It has already added data to targeted StringBuilder
    // just used for visualization
    if (typeof(IndentedInterpolatedStringHandler) == typeof(T)) {
      return;
    }

    if (value is string str) {
      this.sb_.Append(str);
      return;
    }

    if (value is not IEnumerable<string> strings) {
      if (value is not null) {
        this.sb_.Append(value.ToString()!);
      }

      return;
    }

    foreach (var item in strings) {
      this.sb_.Append(item);
    }
  }

  public void AppendFormatted<T>(T value, string format)
      where T : IFormattable {
    this.sb_.Append(value.ToString(format, null));
  }
}

1	using System;
2	using System.Collections.Generic;
3	using System.Runtime.CompilerServices;
4
5	namespace fin.util.strings;
6
7	/// <summary>
8	/// Shamelessly stolen from:
9	/// https://github.com/pstlnce/indent-writer/blob/1d4743bab04b1f547f06c4625b58448c2ae46b93/IndentWriter/IndentedInterpolatedStringHandler.cs
10	/// </summary>
11	[InterpolatedStringHandler]
12	public readonly struct IndentedInterpolatedStringHandler {
13	private readonly IndentedStringBuilder sb_;
14
15	public IndentedInterpolatedStringHandler(int literalLength,
16	int formattedCount,
17	IndentedStringBuilder sb)
18	=> this.sb_ = sb;	28,896✔
19
20	public void AppendLiteral(ReadOnlySpan<char> literal)
21	=> this.sb_.Append(literal);	62,243✔
22
23	public void AppendFormatted<T>(T value) {	50,261✔
24	// It has already added data to targeted StringBuilder
25	// just used for visualization
26	if (typeof(IndentedInterpolatedStringHandler) == typeof(T)) {	50,261!
NEW 27	return;	×
28	}
29
30	if (value is string str) {	79,577✔
31	this.sb_.Append(str);	29,316✔
32	return;	29,316✔
33	}
34
35	if (value is not IEnumerable<string> strings) {	41,890!
36	if (value is not null) {	41,890✔
37	this.sb_.Append(value.ToString()!);	20,945✔
38	}	20,945✔
39
40	return;	20,945✔
41	}
42
NEW 43	foreach (var item in strings) {	×
NEW 44	this.sb_.Append(item);	×
NEW 45	}	×
46	}	50,261✔
47
48	public void AppendFormatted<T>(T value, string format)
49	where T : IFormattable {	3,865✔
50	this.sb_.Append(value.ToString(format, null));	3,865✔
51	}	3,865✔
52	}

MeltyPlayer / MeltyTool / 21090212907

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