-
-
Notifications
You must be signed in to change notification settings - Fork 372
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'master' into fix_netstandard
- Loading branch information
Showing
19 changed files
with
1,268 additions
and
1,157 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Linq.Expressions; | ||
| using DynamicExpresso.Exceptions; | ||
| using DynamicExpresso.Reflection; | ||
|
|
||
| namespace DynamicExpresso.Parsing | ||
| { | ||
| internal class InterpreterExpression : Expression | ||
| { | ||
| private readonly Interpreter _interpreter; | ||
| private readonly string _expressionText; | ||
| private readonly IList<Parameter> _parameters; | ||
| private Type _type; | ||
|
|
||
| public InterpreterExpression(ParserArguments parserArguments, string expressionText, params ParameterWithPosition[] parameters) | ||
| { | ||
| var settings = parserArguments.Settings.Clone(); | ||
| _interpreter = new Interpreter(settings); | ||
| _expressionText = expressionText; | ||
| _parameters = parameters; | ||
|
|
||
| // Take the parent expression's parameters and set them as an identifier that | ||
| // can be accessed by any lower call | ||
| // note: this doesn't impact the initial settings, because they're cloned | ||
| foreach (var dp in parserArguments.DeclaredParameters) | ||
| { | ||
| // Have to mark the parameter as "Used" otherwise we can get a compilation error. | ||
| parserArguments.TryGetParameters(dp.Name, out var pe); | ||
| _interpreter.SetIdentifier(new Identifier(dp.Name, pe)); | ||
| } | ||
|
|
||
| foreach (var myParameter in parameters) | ||
| { | ||
| if (settings.Identifiers.ContainsKey(myParameter.Name)) | ||
| { | ||
| throw new ParseException($"A local or parameter named '{myParameter.Name}' cannot be declared in this scope because that name is used in an enclosing local scope to define a local or parameter", myParameter.Position); | ||
| } | ||
| } | ||
|
|
||
| // prior to evaluation, we don't know the generic arguments types | ||
| _type = ReflectionExtensions.GetFuncType(parameters.Length); | ||
| } | ||
|
|
||
| public IList<Parameter> Parameters | ||
| { | ||
| get { return _parameters; } | ||
| } | ||
|
|
||
| public override Type Type | ||
| { | ||
| get { return _type; } | ||
| } | ||
|
|
||
| internal LambdaExpression EvalAs(Type delegateType) | ||
| { | ||
| if (!IsCompatibleWithDelegate(delegateType)) | ||
| return null; | ||
|
|
||
| var lambdaExpr = _interpreter.ParseAsExpression(delegateType, _expressionText, _parameters.Select(p => p.Name).ToArray()); | ||
| _type = lambdaExpr.Type; | ||
| return lambdaExpr; | ||
| } | ||
|
|
||
| internal bool IsCompatibleWithDelegate(Type target) | ||
| { | ||
| if (!target.IsGenericType || target.BaseType != typeof(MulticastDelegate)) | ||
| return false; | ||
|
|
||
| var genericTypeDefinition = target.GetGenericTypeDefinition(); | ||
| return genericTypeDefinition == ReflectionExtensions.GetFuncType(_parameters.Count) | ||
| || genericTypeDefinition == ReflectionExtensions.GetActionType(_parameters.Count); | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.