ExpressionHelper

Ecng.Compilation.Expressions

Extension class for ExpressionFormula.

属性

Functions

public static IEnumerable<string> Functions { get; }

value = ExpressionHelper.Functions

Available functions.

方法

Compile``1

public static Task<ExpressionFormula<TResult>> Compile<TResult>(ICompiler compiler, ICompilerContext context, IFileSystem fileSystem, string expression, ICompilerCache cache, CancellationToken cancellationToken)

result = ExpressionHelper.Compile(compiler, context, fileSystem, expression, cache, cancellationToken)

Compile mathematical formula.

compiler: ICompiler.
context: ICompilerContext
fileSystem: The file system to use.
expression: Text expression.
cache: ICompilerCache.
cancellationToken: CancellationToken.

Compile``1

public static Task<ExpressionFormula<TResult>> Compile<TResult>(ICompiler compiler, ICompilerContext context, IFileSystem fileSystem, Func<Assembly, string, Type> getType, string expression, ICompilerCache cache, CancellationToken cancellationToken)

result = ExpressionHelper.Compile(compiler, context, fileSystem, getType, expression, cache, cancellationToken)

Compile mathematical formula.

compiler: ICompiler.
context: ICompilerContext
fileSystem: The file system to use.
getType: Function to get type from the assembly.
expression: Text expression.
cache: ICompilerCache.
cancellationToken: CancellationToken.

返回值: Compiled mathematical formula.

GetVariables

public static string[] GetVariables(string expression)

result = ExpressionHelper.GetVariables(expression)

Get variables from the expression.

expression: Text expression.

返回值: Variables.