Alpha implementation of dependency property source generator.

Testing project for source generator
2026-07-24 12:06:29 +00:00 · 2021-04-06 10:40:06 +02:00
parent 127cfd749f
commit 7d3c2fbb9b
26 changed files with 1163 additions and 3 deletions
@@ -0,0 +1,143 @@
+using System.Extensions.Templates;
+using System.Linq;
+using System.Text;
+
+namespace System.Extensions
+{
+    internal class CodeWriter
+    {
+        private StringBuilder StringBuilder { get; } = new StringBuilder();
+        private CodeBlock CurrentBlock { get; set; } = new CodeBlock();
+
+        public CodeWriter Append(string value)
+        {
+            this.CurrentBlock.Append(this.StringBuilder, value);
+            return this;
+        }
+
+        public CodeWriter AppendLine(string value)
+        {
+            this.CurrentBlock.AppendLine(this.StringBuilder, value);
+            return this;
+        }
+
+        public CodeWriter AppendLine()
+        {
+            this.CurrentBlock.AppendLine(this.StringBuilder);
+            return this;
+        }
+
+        public CodeWriter Append(char c)
+        {
+            this.CurrentBlock.Append(this.StringBuilder, c);
+            return this;
+        }
+
+        public CodeWriter AppendLine(char c)
+        {
+            this.AppendLine(c);
+            return this;
+        }
+
+        public CodeWriter Append(AbstractTemplate abstractTemplate)
+        {
+            abstractTemplate.Generate(this);
+            return this;
+        }
+
+        public CodeWriter BeginCodeBlock()
+        {
+            this.CurrentBlock.AppendLine(this.StringBuilder).AppendLine(this.StringBuilder, '{');
+            this.CurrentBlock = CodeBlock.GenerateCodeBlock(this.CurrentBlock);
+            return this;
+        }
+
+        public CodeWriter EndCodeBlock()
+        {
+            this.CurrentBlock = this.CurrentBlock.End(this.StringBuilder).Parent;
+            this.CurrentBlock.AppendLine(this.StringBuilder, '}');
+            return this;
+        }
+
+        public override string ToString()
+        {
+            return this.StringBuilder.ToString();
+        }
+
+        private class CodeBlock
+        {
+            private const char PrefixSymbol = '\t';
+            private bool NewLine { get; set; } = true;
+            private string Prefix { get; }
+            public CodeBlock Parent { get; }
+            public int Level { get; }
+            public CodeBlock()
+            {
+                this.Level = 0;
+                this.Prefix = string.Empty;
+            }
+            private CodeBlock(int level, CodeBlock parent)
+            {
+                this.Level = level;
+                this.Prefix = new string(Enumerable.Repeat(PrefixSymbol, this.Level).ToArray());
+                this.Parent = parent;
+            }
+
+            public CodeBlock AppendLine(StringBuilder stringBuilder)
+            {
+                stringBuilder.AppendLine();
+                this.NewLine = true;
+                return this;
+            }
+
+            public CodeBlock AppendLine(StringBuilder stringBuilder, string value)
+            {
+                value = this.NewLine is true ? Prefix + value : value;
+                stringBuilder.AppendLine(value);
+                this.NewLine = true;
+                return this;
+            }
+
+            public CodeBlock Append(StringBuilder stringBuilder, string value)
+            {
+                value = this.NewLine is true ? Prefix + value : value;
+                stringBuilder.Append(value);
+                this.NewLine = false;
+                return this;
+            }
+
+            public CodeBlock Append(StringBuilder stringBuilder, char c)
+            {
+                var value = this.NewLine is true ? Prefix + c : c.ToString();
+                stringBuilder.Append(value);
+                this.NewLine = false;
+                return this;
+            }
+
+            public CodeBlock AppendLine(StringBuilder stringBuilder, char c)
+            {
+                var value = this.NewLine is true ? Prefix + c : c.ToString();
+                stringBuilder.AppendLine(value);
+                this.NewLine = true;
+                return this;
+            }
+
+            public CodeBlock End(StringBuilder stringBuilder)
+            {
+                if (this.NewLine is false)
+                {
+                    stringBuilder.AppendLine();
+                    this.NewLine = true;
+                }
+
+                return this;
+            }
+
+            public static CodeBlock GenerateCodeBlock(CodeBlock codeBlock)
+            {
+                var child = new CodeBlock(codeBlock.Level + 1, codeBlock);
+                return child;
+            }
+        }
+    }
+}