The Boo.Lang.Compiler.Ast.Expression is a package library in C# that represents an abstract expression in the Boo programming language. It is commonly used for code analysis, code generation, syntax highlighting, and other language processing tasks.
Code Example 1: Arithmetic Expression
// Create an integer literal expression var num1 = new Boo.Lang.Compiler.Ast.LiteralExpression(100);
// Create an expression for adding two variables var num2 = new Boo.Lang.Compiler.Ast.ReferenceExpression("x"); var num3 = new Boo.Lang.Compiler.Ast.ReferenceExpression("y"); var addExp = new Boo.Lang.Compiler.Ast.BinaryExpression(Boo.Lang.Compiler.Ast.BinaryOperatorType.Addition, num2, num3);
// Create an expression for subtracting two variables var num4 = new Boo.Lang.Compiler.Ast.ReferenceExpression("p"); var num5 = new Boo.Lang.Compiler.Ast.ReferenceExpression("q"); var subExp = new Boo.Lang.Compiler.Ast.BinaryExpression(Boo.Lang.Compiler.Ast.BinaryOperatorType.Subtraction, num4, num5);
// Combine the arithmetic expressions var resultExp = new Boo.Lang.Compiler.Ast.BinaryExpression(Boo.Lang.Compiler.Ast.BinaryOperatorType.Multiplication, addExp, subExp);
// Print the expression tree Console.WriteLine(resultExp.ToCodeString()); // prints "(x + y) * (p - q)"
Code Example 2: Function Call Expression
// Create a variable reference to a function var funcRef = new Boo.Lang.Compiler.Ast.ReferenceExpression("myFunc");
// Create an argument list var arg1 = new Boo.Lang.Compiler.Ast.LiteralExpression(100); var arg2 = new Boo.Lang.Compiler.Ast.LiteralExpression(200); var argList = new System.Collections.Generic.List { arg1, arg2 };
// Create a function call expression var callExp = new Boo.Lang.Compiler.Ast.MethodInvocationExpression(funcRef, argList);
// Print the expression tree Console.WriteLine(callExp.ToCodeString()); // prints "myFunc(100, 200)"
In summary, the Boo.Lang.Compiler.Ast.Expression is a package library in C# that provides a set of classes to represent expressions in the Boo programming language. It is used for a wide range of language processing tasks and can be used to analyze and manipulate code at the abstract syntax tree level.
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