234 lines
11 KiB
C#
234 lines
11 KiB
C#
// Copyright (c) Ivan Bondarev, Stanislav Mihalkovich (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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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.Text;
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using PascalABCCompiler.TreeRealization;
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using PascalABCCompiler.SyntaxTree;
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using PascalABCCompiler.TreeConverter;
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namespace PascalABCCompiler.TreeConversion
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{
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public class SubtreeCreator
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{
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syntax_tree_visitor _syntaxTreeVisitor;
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public SubtreeCreator(syntax_tree_visitor visitor)
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{
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_syntaxTreeVisitor = visitor;
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}
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internal void AddError(location loc, string ErrString, params string[] values)
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{
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_syntaxTreeVisitor.AddError(loc, ErrString, values);
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}
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/// <summary>
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/// Создать var-выражение
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/// </summary>
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/// <param name="name">Имя переменной</param>
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/// <param name="initialValue">Начальное значение</param>
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/// <returns></returns>
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public var_def_statement CreateVarDef(string name, expression initialValue)
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{
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ident_list list = new ident_list();
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list.idents.Add(new ident(name));
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var res = new var_def_statement();
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res.inital_value = initialValue;
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res.vars = list;
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return res;
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}
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/// <summary>
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/// Создать var-выражение с несколькими переменными
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/// </summary>
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/// <param name="type">Тип переменных</param>
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/// <param name="idents">Имена переменных</param>
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/// <returns></returns>
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public var_def_statement CreateVarDef(named_type_reference type, params string[] names)
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{
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var_def_statement res = new var_def_statement();
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foreach (string x in names)
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res.vars.Add(new ident(x));
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res.vars_type = type;
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return res;
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}
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/// <summary>
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/// Создать цикл for
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/// </summary>
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/// <param name="varName">Имя переменной цикла</param>
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/// <param name="initValue">Начальное значение переменной цикла</param>
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/// <param name="finishValue">Конечное значение переменной цикла</param>
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/// <param name="body">Тело цикла</param>
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/// <param name="type">Тип цикла(to / downto)</param>
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/// <returns></returns>
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public SyntaxTree.for_node CreateFor(string varName, expression initValue, expression finishValue, statement body, for_cycle_type type)
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{
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SyntaxTree.for_node res = new SyntaxTree.for_node();
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res.loop_variable = new ident(varName);
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res.initial_value = initValue;
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res.finish_value = finishValue;
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res.statements = body;
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res.cycle_type = type;
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return res;
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}
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/// <summary>
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/// Создать цикл while
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/// </summary>
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/// <param name="condition">Условие цикла</param>
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/// <param name="body">Тело цикла</param>
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/// <returns></returns>
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public SyntaxTree.while_node CreateWhile(expression condition, statement body)
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{
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SyntaxTree.while_node res = new SyntaxTree.while_node();
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res.CycleType = WhileCycleType.While;
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res.expr = condition;
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res.statements = body;
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return res;
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}
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private SyntaxTree.if_node CreateIfElse(expression condition, statement thenBody, statement elseBody)
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{
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SyntaxTree.if_node res = new SyntaxTree.if_node();
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res.condition = condition;
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res.then_body = thenBody;
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res.else_body = elseBody;
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return res;
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}
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/// <summary>
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/// Создать условный оператор
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/// </summary>
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/// <param name="condition">Условие</param>
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/// <param name="thenBody">Тело, выполняемое если условие истино</param>
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/// <returns></returns>
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public SyntaxTree.if_node CreateIf(expression condition, statement thenBody)
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{
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return CreateIfElse(condition, thenBody, null);
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}
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/// <summary>
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/// Создать условный оператор
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/// </summary>
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/// <param name="condition">Условие</param>
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/// <param name="thenBody">Тело, выполняемое если условие истино</param>
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/// <param name="elseBody">Тело, выполняемое если условие ложно</param>
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/// <returns></returns>
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public SyntaxTree.if_node CreateIf(expression condition, statement thenBody, statement elseBody)
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{
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return CreateIfElse(condition, thenBody, elseBody);
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}
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private SyntaxTree.program_module InternalCreateProgramModule(statement_list statements, declarations defs)
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{
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block block = new block();
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if (defs != null)
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block.defs = defs;
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statements.Add(new SyntaxTree.empty_statement());
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statements.left_logical_bracket = new token_info("begin");
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statements.right_logical_bracket = new token_info("end");
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block.program_code = statements;
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program_module res = new program_module();
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res.program_block = block;
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//res.used_units = create_standard_uses_list();
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return res;
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}
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public SyntaxTree.program_module CreateProgramModule(statement_list statements, declarations defs)
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{
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return InternalCreateProgramModule(statements, defs);
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}
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public SyntaxTree.program_module CreateProgramModule(statement_list statements)
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{
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return InternalCreateProgramModule(statements, null);
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}
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//private SyntaxTree.uses_list CreateStandartUsesList()
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//{
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// uses_list res = new uses_list();
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// unit_or_namespace pabcsystem = new unit_or_namespace();
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// pabcsystem.name = new ident_list("PABCSystem");
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// res.units.Add(pabcsystem);
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// return res;
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//}
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public procedure_call CreateProcedureCall(string procName, params expression[] exprList)
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{
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SyntaxTree.procedure_call pc = new SyntaxTree.procedure_call();
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SyntaxTree.method_call mc = new SyntaxTree.method_call();
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mc.dereferencing_value = new ident(procName);
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pc.func_name = mc;
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SyntaxTree.expression_list exl = new PascalABCCompiler.SyntaxTree.expression_list();
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foreach (expression x in exprList)
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exl.Add(x);
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mc.parameters = exl;
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return pc;
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}
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// From LamdaHelper
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private procedure_definition InternalCreateProcedureDefinitionNode(string methName, formal_parameters formalPars, bool classKeyword, statement procBody, SourceContext sc)
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{
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return PascalABCCompiler.TreeConverter.LambdaHelper.SyntaxTreeNodesConstructor.CreateProcedureDefinitionNode(new method_name(methName),
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formalPars,
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false,
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classKeyword,
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procBody,
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sc);
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}
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public procedure_definition CreateProcedureDefinitionNode(string methName, formal_parameters formalPars, bool classKeyword, statement procBody, SourceContext sc)
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{
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return InternalCreateProcedureDefinitionNode(methName, formalPars, classKeyword, procBody, sc);
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}
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public procedure_definition CreateProcedureDefinitionNode(string methName, formal_parameters formalPars, bool classKeyword, statement procBody)
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{
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return InternalCreateProcedureDefinitionNode(methName, formalPars, classKeyword, procBody, null);
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}
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private procedure_definition InternalCreateFunctionDefinitionNode(string methName, formal_parameters formalPars, bool classKeyword, statement procBody, type_definition returnType, SourceContext sc)
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{
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return PascalABCCompiler.TreeConverter.LambdaHelper.SyntaxTreeNodesConstructor.CreateFunctionDefinitionNode(new method_name(methName),
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formalPars,
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false,
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classKeyword,
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procBody,
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returnType,
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sc);
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}
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public procedure_definition CreateFunctionDefinitionNode(string methName, formal_parameters formalPars, bool classKeyword, statement procBody, type_definition returnType, SourceContext sc)
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{
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return InternalCreateFunctionDefinitionNode(methName, formalPars, classKeyword, procBody, returnType, sc);
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}
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public procedure_definition CreateFunctionDefinitionNode(string methName, formal_parameters formalPars, bool classKeyword, statement procBody, type_definition returnType)
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{
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return InternalCreateFunctionDefinitionNode(methName, formalPars, classKeyword, procBody, returnType, null);
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}
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// From !LamdaHelper
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public declarations CreateDeclarations(params declaration[] decls)
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{
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declarations res = new declarations();
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foreach (declaration x in decls)
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res.Add(x);
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return res;
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}
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public statement_list CreateStatementList(params statement[] stmts)
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{
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statement_list res = new statement_list();
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foreach (statement x in stmts)
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res.Add(x);
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return res;
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}
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}
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}
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