Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 10153x 10153x 10153x 10153x 10153x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 30231x 10153x 10153x 9625x 9625x 10153x 10153x 263x 263x 263x 10153x 10153x 238x 238x 10153x 10153x 327x 327x 19x 19x 308x 327x 327x 61x 61x 247x 247x 327x 25x 25x 222x 222x 222x 327x 76x 76x 222x 222x 222x 10153x 10153x 10153x 10153x 76x 76x 76x 76x 70x 70x 70x 70x 37x 70x 1x 33x 2x 2x 30x 30x 70x 20x 20x 10x 10x 10x 70x 70x 1x 1x 9x 9x 70x 70x 9x 9x 9x 70x 70x 70x 70x 70x 5x 5x 4x 4x 70x 70x 4x 70x 4x 4x 4x 4x 4x 4x 4x 4x 4x 76x 76x 76x 10153x 10153x 10153x 10153x 10x 10x 10x 10x 10x 188x 10x 10x 188x 10153x 10153x 30x 30x 30x 68x 68x 2x 2x 68x 28x 28x 30x 56x 56x 46x 46x 10x 10x 10x 10x 56x 28x 28x 30x 57x 57x 44x 44x 13x 13x 13x 13x 57x 28x 30x 18x 30x 7x 10x 3x 3x 3x 3x 10153x 10153x 70x 70x 70x 39x 70x 31x 31x 70x 10153x 10153x 1042x 1042x 1042x 76x 76x 966x 966x 1042x 820x 820x 966x 966x 10153x 10153x | import * as Statements from "../abap/2_statements/statements";
import {BasicRuleConfig} from "./_basic_rule_config";
import {Issue} from "../issue";
import {IRegistry} from "../_iregistry";
import {IRuleMetadata, RuleTag, IRule} from "./_irule";
import {Version} from "../version";
import {IObject} from "../objects/_iobject";
import {ABAPObject} from "../objects/_abap_object";
import {SyntaxLogic} from "../abap/5_syntax/syntax";
import {ISpaghettiScopeNode} from "../abap/5_syntax/_spaghetti_scope";
import {IdentifierMeta, TypedIdentifier} from "../abap/types/_typed_identifier";
import {ScopeType} from "../abap/5_syntax/_scope_type";
import {AbstractToken} from "../abap/1_lexer/tokens/abstract_token";
import {ReferenceType} from "../abap/5_syntax/_reference";
import {Identifier} from "../abap/4_file_information/_identifier";
import {EditHelper, IEdit} from "../edit_helper";
interface IVariableReference {
position: Identifier,
resolved: Identifier
}
export class PreferInlineConf extends BasicRuleConfig {
}
export class PreferInline implements IRule {
private reg: IRegistry;
private conf = new PreferInlineConf();
public getMetadata(): IRuleMetadata {
return {
key: "prefer_inline",
title: "Prefer Inline Declarations",
shortDescription: `Prefer inline to up-front declarations.`,
extendedInformation: `EXPERIMENTAL
Activates if language version is v740sp02 or above.
Variables must be local(METHOD or FORM).
No generic or void typed variables. No syntax errors.
First position used must be a full/pure write.
Move statment is not a cast(?=)
https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#prefer-inline-to-up-front-declarations`,
tags: [RuleTag.Styleguide, RuleTag.Upport, RuleTag.Experimental, RuleTag.Quickfix],
badExample: `DATA foo TYPE i.
foo = 2.
DATA percentage TYPE decfloat34.
percentage = ( comment_number / abs_statement_number ) * 100.`,
goodExample: `DATA(foo) = 2.
DATA(percentage) = CONV decfloat34( comment_number / abs_statement_number ) * 100.`,
};
}
public getConfig() {
return this.conf;
}
public initialize(reg: IRegistry) {
this.reg = reg;
return this;
}
public setConfig(conf: PreferInlineConf): void {
this.conf = conf;
}
public run(obj: IObject): readonly Issue[] {
if (obj.getType() === "INTF") {
return [];
}
if (this.reg.getConfig().getVersion() < Version.v740sp02 && this.reg.getConfig().getVersion() !== Version.Cloud) {
return [];
} else if (!(obj instanceof ABAPObject)) {
return [];
}
const run = new SyntaxLogic(this.reg, obj).run();
if (run.issues.length > 0) {
return [];
}
const scopes = this.findScopeCandidates(run.spaghetti.getTop());
const ret: Issue[] = [];
for (const s of scopes) {
ret.push(...this.analyzeScope(s, obj));
}
return ret;
}
///////////////////////////
private analyzeScope(node: ISpaghettiScopeNode, obj: ABAPObject): Issue[] {
const ret: Issue[] = [];
const vars = node.getData().vars;
for (const name in vars) {
const identifier = vars[name];
if (this.isLocalDefinition(node, identifier) === false
|| identifier.getMeta().includes(IdentifierMeta.InlineDefinition)
|| identifier.getMeta().includes(IdentifierMeta.FormParameter)) {
continue;
} else if (identifier.getType().isGeneric() === true) {
continue;
} else if (identifier.getType().containsVoid() === true) {
continue;
}
const write = this.firstUseIsWrite(node, identifier);
if (write === undefined) {
continue;
}
// check that it is a pure write, eg not sub component assignment
const next = this.findNextToken(write, obj);
if (next === undefined) {
continue;
} else if (next?.getStart().equals(write.position.getEnd()) && next.getStr() !== "." && next.getStr() !== ",") {
continue;
}
const file = obj.getABAPFileByName(identifier.getFilename());
const writeStatement = EditHelper.findStatement(next, file);
const statementType = writeStatement?.get();
if (statementType === undefined) {
continue;
}
// for now only allow some specific target statements, todo refactor
if (!(statementType instanceof Statements.Move
|| statementType instanceof Statements.Catch
|| statementType instanceof Statements.ReadTable
|| statementType instanceof Statements.Loop)
|| writeStatement?.concatTokens()?.includes("?=")
|| writeStatement?.concatTokens()?.includes(" #(")) {
continue;
}
const statement = EditHelper.findStatement(identifier.getToken(), file);
const concat = statement?.concatTokens().toUpperCase();
if (concat?.includes("BEGIN OF")) {
continue;
}
let fix: IEdit | undefined = undefined;
if (file && statement) {
const fix1 = EditHelper.deleteStatement(file, statement);
const name = identifier.getName();
const replace = name.startsWith("<") ? "FIELD-SYMBOL(" + name + ")" : "DATA(" + name + ")";
const fix2 = EditHelper.replaceRange(file, write.position.getStart(), write.position.getEnd(), replace);
fix = EditHelper.merge(fix1, fix2);
}
const message = this.getMetadata().title + ", " + name;
ret.push(Issue.atIdentifier(identifier, message, this.getMetadata().key, this.conf.severity, fix));
}
return ret;
}
////////////////////////
private findNextToken(ref: IVariableReference, obj: ABAPObject): AbstractToken | undefined {
const file = obj.getABAPFileByName(ref.resolved.getFilename());
if (file === undefined) {
return undefined;
}
for (const t of file.getTokens()) {
if (t.getStart().isAfter(ref.position.getEnd())) {
return t;
}
}
return undefined;
}
private firstUseIsWrite(node: ISpaghettiScopeNode, identifier: TypedIdentifier): IVariableReference | undefined {
// assumption: variables are local, so only the current scope must be searched
for (const r of node.getData().references) {
if (r.referenceType === ReferenceType.TypeReference
&& r.resolved?.getStart().equals(identifier.getStart()) === true) {
return undefined;
}
}
let firstRead: IVariableReference | undefined = undefined;
for (const r of node.getData().references) {
if (r.referenceType !== ReferenceType.DataReadReference
|| r.resolved?.getStart().equals(identifier.getStart()) === false) {
continue;
}
if (r.resolved) {
firstRead = {position: r.position, resolved: r.resolved};
break;
}
}
let firstWrite: IVariableReference | undefined = undefined;
for (const w of node.getData().references) {
if (w.referenceType !== ReferenceType.DataWriteReference
|| w.resolved?.getStart().equals(identifier.getStart()) === false) {
continue;
}
if (w.resolved) {
firstWrite = {position: w.position, resolved: w.resolved};
break;
}
}
if (firstRead === undefined) {
return firstWrite;
} else if (firstWrite === undefined) {
return undefined;
} else if (firstWrite.position.getStart().getRow() === firstRead.position.getStart().getRow()) {
// if the same statement both reads and write the same variable
// note that currently just the line number is compared, this is not correct, it should check if its the same statement
return undefined;
} else if (firstWrite.position.getStart().isBefore(firstRead.position.getStart())) {
return firstWrite;
}
return undefined;
}
private isLocalDefinition(node: ISpaghettiScopeNode, identifier: TypedIdentifier): boolean {
const {start, end} = node.calcCoverage();
if (identifier.getStart().isAfter(start) && identifier.getStart().isBefore(end)) {
return true;
} else {
return false;
}
}
private findScopeCandidates(node: ISpaghettiScopeNode): ISpaghettiScopeNode[] {
if (node.getIdentifier().stype === ScopeType.Form
|| node.getIdentifier().stype === ScopeType.Method) {
return [node];
}
let ret: ISpaghettiScopeNode[] = [];
for (const c of node.getChildren()) {
ret = ret.concat(this.findScopeCandidates(c));
}
return ret;
}
} |