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https://gitee.com/langsisi_admin/serein-flow
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优化了脚本生成AST时的代码提示，增加了脚本运行时错误提示。
This commit is contained in:
fengjiayi
173
Serein.Script/SereinScriptTypeAnalysis.cs
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173
Serein.Script/SereinScriptTypeAnalysis.cs
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using Serein.Library.Utils;
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using Serein.Script.Node;
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using Serein.Script.Symbol;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reactive;
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using System.Text;
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using System.Threading.Tasks;
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using System.Xml.Linq;
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namespace Serein.Script
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{
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public class SereinScriptTypeAnalysis
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{
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private Dictionary<string, SymbolInfo> SymbolInfos = new Dictionary<string, SymbolInfo>();
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public SereinScriptTypeAnalysis(ProgramNode programNode)
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{
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SymbolInfos.Clear(); // 清空符号表
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foreach (ASTNode astNode in programNode.Statements)
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{
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var type = Trace(astNode);
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if (type is null) continue;
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var info = Analyse(astNode, type);
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if(info != null)
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{
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SymbolInfos[info.Name] = info;
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}
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/*if(astNode is AssignmentNode assignmentNode)
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{
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var name = assignmentNode.Variable;
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var node = assignmentNode.Value;
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var type = Analyse(node);
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if(type is null)
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{
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continue;
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}
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var symbolInfo = new SymbolInfo
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{
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Type = type,
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Node = node,
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Name = name,
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};
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SymbolInfos[name] = symbolInfo;
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}*/
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}
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}
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/// <summary>
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/// 追踪类型
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/// </summary>
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/// <param name="node"></param>
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/// <returns></returns>
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private Type Trace(ASTNode node)
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{
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if (node == null)
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{
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return null;
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}
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switch (node)
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{
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case NullNode nullNode: // 返回null
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return typeof(object);
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case BooleanNode booleanNode: // 返回布尔
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return typeof(bool);
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case NumberIntNode numberNode: // 数值
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return typeof(int);
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case StringNode stringNode: // 字符串
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return typeof(string);
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case CharNode charNode: // char
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return typeof(char);
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case IdentifierNode identifierNode: // 定义变量
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return typeof(object);
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case AssignmentNode assignmentNode: // 赋值行为
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var type = Trace(assignmentNode.Value);
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return type;
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//throw new SereinSciptException(identifierNode, "尝试使用值为null的变量");
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//throw new SereinSciptException(identifierNode, "尝试使用未声明的变量");
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case BinaryOperationNode binOpNode: // 递归计算二元操作
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var leftType = Trace(binOpNode.Left);
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var op = binOpNode.Operator;
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var rightType = Trace(binOpNode.Right);
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var resultType = BinaryOperationEvaluator.EvaluateType(leftType, op, rightType);
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return resultType;
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case ClassTypeDefinitionNode classTypeDefinitionNode:
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var definitionType = DynamicObjectHelper.CreateTypeWithProperties(classTypeDefinitionNode.Fields, classTypeDefinitionNode.ClassName, true);
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return definitionType;
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case ObjectInstantiationNode objectInstantiationNode: // 创建对象
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var typeName = objectInstantiationNode.TypeName;
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var objectType = Type.GetType(typeName);
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objectType ??= DynamicObjectHelper.GetCacheType(typeName);
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return objectType;
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case FunctionCallNode callNode: // 调用方法
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return null;
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case MemberFunctionCallNode memberFunctionCallNode: // 对象方法调用
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return null;
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case MemberAccessNode memberAccessNode: // 对象成员访问
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var memberType = memberAccessNode.MemberName;
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return null;
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case CollectionIndexNode collectionIndexNode:
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case ReturnNode returnNode: // 返回内容
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default:
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break;
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//throw new SereinSciptException(node, $"解释器 EvaluateAsync() 未实现{node}节点行为");
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}
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return null;
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}
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private SymbolInfo Analyse(ASTNode node, Type type)
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{
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if (node == null)
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{
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return null;
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}
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switch (node)
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{
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case IdentifierNode identifierNode: // 定义变量
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return new SymbolInfo
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{
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Name = identifierNode.Name,
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Node = node,
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Type = type,
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};
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case AssignmentNode assignmentNode: // 赋值行为
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return new SymbolInfo
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{
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Name = assignmentNode.Variable,
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Node = node,
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Type = type,
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};
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case BinaryOperationNode binOpNode: // 递归计算二元操作
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//case ClassTypeDefinitionNode classTypeDefinitionNode
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case ObjectInstantiationNode objectInstantiationNode: // 创建对象
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case FunctionCallNode callNode: // 调用方法
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case MemberFunctionCallNode memberFunctionCallNode: // 对象方法调用
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case MemberAccessNode memberAccessNode: // 对象成员访问
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case CollectionIndexNode collectionIndexNode:
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case ReturnNode returnNode: // 返回内容
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default:
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break;
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//throw new SereinSciptException(node, $"解释器 EvaluateAsync() 未实现{node}节点行为");
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}
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return null;
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}
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/*
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case NullNode nullNode: // 返回null
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case BooleanNode booleanNode: // 返回布尔
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case NumberIntNode numberNode: // 数值
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case StringNode stringNode: // 字符串
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case CharNode charNode: // char
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case IdentifierNode identifierNode: // 定义变量
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case AssignmentNode assignmentNode: // 赋值行为
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case BinaryOperationNode binOpNode: // 递归计算二元操作
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case ObjectInstantiationNode objectInstantiationNode: // 创建对象
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case FunctionCallNode callNode: // 调用方法
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case MemberFunctionCallNode memberFunctionCallNode: // 对象方法调用
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case MemberAccessNode memberAccessNode: // 对象成员访问
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case CollectionIndexNode collectionIndexNode:
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case ReturnNode returnNode: // 返回内容
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default:
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break;
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*/
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}
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}
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