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Language Server Protocol implementation for 1C (BSL) - 1C:Enterprise 8 and OneScript languages.
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/*
* This file is a part of BSL Language Server.
*
* Copyright (c) 2018-2024
* Alexey Sosnoviy , Nikita Fedkin and contributors
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*
* BSL Language Server is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* BSL Language Server is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with BSL Language Server.
*/
package com.github._1c_syntax.bsl.languageserver.diagnostics;
import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticMetadata;
import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticSeverity;
import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticTag;
import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticType;
import com.github._1c_syntax.bsl.languageserver.utils.bsl.Constructors;
import com.github._1c_syntax.bsl.parser.BSLParser;
import com.github._1c_syntax.bsl.parser.BSLParser.AssignmentContext;
import com.github._1c_syntax.bsl.parser.BSLParserRuleContext;
import com.github._1c_syntax.utils.CaseInsensitivePattern;
import edu.umd.cs.findbugs.annotations.Nullable;
import lombok.Getter;
import lombok.ToString;
import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.RuleContext;
import org.antlr.v4.runtime.tree.ParseTree;
import java.util.ArrayDeque;
import java.util.Collection;
import java.util.Deque;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
@DiagnosticMetadata(
type = DiagnosticType.ERROR,
severity = DiagnosticSeverity.CRITICAL,
minutesToFix = 20,
tags = {
DiagnosticTag.PERFORMANCE
}
)
public class CreateQueryInCycleDiagnostic extends AbstractVisitorDiagnostic {
private static final Pattern EXECUTE_CALL_PATTERN = CaseInsensitivePattern.compile("Выполнить|Execute");
private static final Pattern QUERY_BUILDER_PATTERN =
CaseInsensitivePattern.compile("ПостроительЗапроса|QueryBuilder");
private static final Pattern REPORT_BUILDER_PATTERN =
CaseInsensitivePattern.compile("ПостроительОтчета|ReportBuilder");
private static final Pattern QUERY_PATTERN = CaseInsensitivePattern.compile("Запрос|Query");
private static final String BOOLEAN_TYPE = "Boolean";
private static final String DATE_TYPE = "Datetime";
private static final String NULL_TYPE = "Null";
private static final String NUMBER_TYPE = "Number";
private static final String REPORT_BUILDER_TYPE = "ReportBuilder";
private static final String STRING_TYPE = "String";
private static final String QUERY_BUILDER_TYPE = "QueryBuilder";
private static final String QUERY_TYPE = "Query";
private static final String UNDEFINED_TYPE = "Undefined";
private static final String GLOBAL_SCOPE = "GLOBAL_SCOPE";
private static final String MODULE_SCOPE = "MODULE_SCOPE";
private VariableScope currentScope;
private static String getTypeFromConstValue(BSLParser.ConstValueContext constValue) {
String result;
if (constValue.string() != null) {
result = STRING_TYPE;
} else if (constValue.DATETIME() != null) {
result = DATE_TYPE;
} else if (constValue.numeric() != null) {
result = NUMBER_TYPE;
} else if (constValue.TRUE() != null) {
result = BOOLEAN_TYPE;
} else if (constValue.FALSE() != null) {
result = BOOLEAN_TYPE;
} else if (constValue.NULL() != null) {
result = NULL_TYPE;
} else {
result = UNDEFINED_TYPE;
}
return result;
}
private static String getTypeFromNewExpressionContext(BSLParser.NewExpressionContext newExpression) {
String typeName = Constructors.typeName(newExpression)
.orElse(UNDEFINED_TYPE);
if (QUERY_BUILDER_PATTERN.matcher(typeName).matches()) {
return QUERY_BUILDER_TYPE;
} else if (REPORT_BUILDER_PATTERN.matcher(typeName).matches()) {
return REPORT_BUILDER_TYPE;
} else if (QUERY_PATTERN.matcher(typeName).matches()) {
return QUERY_TYPE;
} else {
return typeName;
}
}
private static String getVariableNameFromCallStatementContext(BSLParser.CallStatementContext callStatement) {
return callStatement.IDENTIFIER().getText();
}
private static String getVariableNameFromModifierContext(BSLParser.ModifierContext modifier) {
ParserRuleContext parent = modifier.getParent();
if (parent instanceof BSLParser.ComplexIdentifierContext complexIdentifierContext) {
return getComplexPathName(complexIdentifierContext, modifier);
} else if (parent instanceof BSLParser.CallStatementContext parentCall) {
return parentCall.modifier().stream()
.takeWhile(e -> !e.equals(modifier))
.map(RuleContext::getText)
.collect(Collectors.joining("", parentCall.IDENTIFIER().getText(), ""));
}
return null;
}
private static String getComplexPathName(
BSLParser.ComplexIdentifierContext ci,
@Nullable BSLParser.ModifierContext to
) {
return ci.modifier().stream()
.takeWhile(e -> !e.equals(to))
.map(RuleContext::getText)
.collect(Collectors.joining("", ci.getChild(0).getText(), ""));
}
@Override
public ParseTree visitFile(BSLParser.FileContext ctx) {
currentScope = new VariableScope();
currentScope.enterScope(GLOBAL_SCOPE);
ParseTree result = super.visitFile(ctx);
currentScope = null;
return result;
}
@Override
public ParseTree visitFileCodeBlock(BSLParser.FileCodeBlockContext ctx) {
currentScope.enterScope(MODULE_SCOPE);
ParseTree result = super.visitFileCodeBlock(ctx);
currentScope.leaveScope();
return result;
}
@Override
public ParseTree visitProcedure(BSLParser.ProcedureContext ctx) {
currentScope.enterScope(ctx.procDeclaration().subName().getText());
ParseTree result = super.visitProcedure(ctx);
currentScope.leaveScope();
return result;
}
@Override
public ParseTree visitFunction(BSLParser.FunctionContext ctx) {
currentScope.enterScope(ctx.funcDeclaration().subName().getText());
ParseTree result = super.visitFunction(ctx);
currentScope.leaveScope();
return result;
}
@Override
public ParseTree visitAssignment(AssignmentContext ctx) {
if (ctx.expression() == null) {
return super.visitAssignment(ctx);
}
BSLParser.MemberContext firstMember = ctx.expression().member(0);
if (firstMember == null) {
return super.visitAssignment(ctx);
}
String variableName = ctx.lValue().getText();
var currentVariable = new VariableDefinition(variableName);
currentVariable.addDeclaration(ctx.lValue());
if (firstMember.complexIdentifier() != null) {
currentVariable.types.addAll(getTypesFromComplexIdentifier(firstMember.complexIdentifier()));
} else if (firstMember.constValue() != null) {
currentVariable.types.add(getTypeFromConstValue(firstMember.constValue()));
} else {
currentVariable.addType(UNDEFINED_TYPE);
}
currentScope.addVariable(currentVariable);
return super.visitAssignment(ctx);
}
private Set getTypesFromComplexIdentifier(BSLParser.ComplexIdentifierContext complexId) {
if (complexId.newExpression() != null) {
return Set.of(getTypeFromNewExpressionContext(complexId.newExpression()));
} else if (complexId.IDENTIFIER() != null) {
return currentScope.getVariableByName(getComplexPathName(complexId, null))
.map(variableDefinition -> variableDefinition.types)
.orElse(Set.of(UNDEFINED_TYPE));
} else {
return Set.of();
}
}
private void visitDescendantCodeBlock(@Nullable BSLParser.CodeBlockContext ctx) {
Optional.ofNullable(ctx)
.map(e -> e.children)
.stream()
.flatMap(Collection::stream)
.forEach(t -> t.accept(this));
}
@Override
public ParseTree visitAccessCall(BSLParser.AccessCallContext ctx) {
if (!EXECUTE_CALL_PATTERN.matcher(ctx.methodCall().methodName().getText()).matches()) {
return super.visitAccessCall(ctx);
}
if (!currentScope.codeFlowInCycle()) {
return super.visitAccessCall(ctx);
}
String variableName = null;
BSLParserRuleContext errorContext = null;
BSLParserRuleContext parent = ctx.getParent();
if (parent instanceof BSLParser.CallStatementContext callStatementContext) {
errorContext = parent;
variableName = getVariableNameFromCallStatementContext(callStatementContext);
} else if (parent instanceof BSLParser.ModifierContext callModifier) {
errorContext = callModifier.getParent();
variableName = getVariableNameFromModifierContext(callModifier);
}
Optional variableDefinition = currentScope.getVariableByName(variableName);
BSLParserRuleContext finalErrorContext = errorContext;
if (finalErrorContext != null) {
variableDefinition.ifPresent((VariableDefinition definition) -> {
if (definition.types.contains(QUERY_BUILDER_TYPE)
|| definition.types.contains(REPORT_BUILDER_TYPE)
|| definition.types.contains(QUERY_TYPE)) {
diagnosticStorage.addDiagnostic(finalErrorContext);
}
});
}
return super.visitAccessCall(ctx);
}
@Override
public ParseTree visitForEachStatement(BSLParser.ForEachStatementContext ctx) {
boolean alreadyInCycle = currentScope.codeFlowInCycle();
currentScope.flowMode.push(CodeFlowType.CYCLE);
if (alreadyInCycle) {
Optional.ofNullable(ctx.expression())
.ifPresent(e -> e.accept(this));
}
visitDescendantCodeBlock(ctx.codeBlock());
currentScope.flowMode.pop();
return ctx;
}
@Override
public ParseTree visitWhileStatement(BSLParser.WhileStatementContext ctx) {
currentScope.flowMode.push(CodeFlowType.CYCLE);
ParseTree result = super.visitWhileStatement(ctx);
currentScope.flowMode.pop();
return result;
}
@Override
public ParseTree visitForStatement(BSLParser.ForStatementContext ctx) {
boolean alreadyInCycle = currentScope.codeFlowInCycle();
currentScope.flowMode.push(CodeFlowType.CYCLE);
if (alreadyInCycle) {
ctx.expression()
.forEach(e -> e.accept(this));
}
visitDescendantCodeBlock(ctx.codeBlock());
currentScope.flowMode.pop();
return ctx;
}
public enum CodeFlowType {
LINEAR, CYCLE
}
@ToString
public static class VariableDefinition {
private final String variableName;
private final Set types = new HashSet<>();
private ParseTree firstDeclaration;
VariableDefinition(String variableName) {
this.variableName = variableName;
}
public void addType(String type) {
this.types.add(type);
}
public void addDeclaration(ParseTree firstDeclaration) {
if (this.firstDeclaration == null) {
this.firstDeclaration = firstDeclaration;
}
}
}
private static class Scope {
@Getter
private final String name;
private final HashMap variables = new HashMap<>();
public Scope(String name) {
this.name = name;
}
public void addVariable(VariableDefinition variableDefinition, boolean typesMerge) {
this.variables.merge(
variableDefinition.variableName,
variableDefinition,
(VariableDefinition key, VariableDefinition value) -> {
if (!typesMerge) {
key.types.clear();
}
key.types.addAll(value.types);
return key;
});
}
}
private static class VariableScope extends ArrayDeque {
private final Deque flowMode = new ArrayDeque<>();
public boolean codeFlowInCycle() {
final CodeFlowType flowType = flowMode.peek();
if (flowType == null) {
return false;
}
return flowType == CodeFlowType.CYCLE;
}
public Optional getVariableByName(@Nullable String variableName) {
return Optional.ofNullable(current().variables.get(variableName));
}
public void addVariable(VariableDefinition variableDefinition) {
final CodeFlowType flowType = flowMode.peek();
if (flowType == null) {
return;
}
this.current().addVariable(variableDefinition, flowType == CodeFlowType.CYCLE);
}
public void enterScope(String name) {
var newScope = new Scope(name);
if (!this.isEmpty()) {
var prevScope = this.peek();
newScope.variables.putAll(prevScope.variables);
}
this.push(newScope);
flowMode.push(CodeFlowType.LINEAR);
}
public void leaveScope() {
this.pop();
flowMode.pop();
}
public Scope current() {
return this.peek();
}
}
}
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