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 10524x 10524x 10524x 10524x 10524x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 31335x 10524x 10524x 9970x 9970x 10524x 10524x 276x 276x 276x 10524x 10524x 251x 251x 10524x 10524x 342x 342x 20x 20x 322x 342x 342x 62x 62x 260x 260x 342x 25x 25x 235x 235x 235x 342x 80x 80x 235x 235x 235x 10524x 10524x 10524x 10524x 80x 80x 80x 80x 73x 73x 73x 73x 38x 73x 1x 35x 2x 2x 32x 32x 73x 22x 22x 10x 10x 10x 73x 73x 1x 1x 9x 9x 73x 73x 9x 9x 9x 73x 73x 73x 73x 73x 5x 5x 4x 4x 73x 73x 4x 73x 4x 4x 4x 4x 4x 4x 4x 4x 4x 80x 80x 80x 10524x 10524x 10524x 10524x 10x 10x 10x 10x 10x 188x 10x 10x 188x 10524x 10524x 32x 32x 32x 73x 73x 2x 2x 73x 30x 30x 32x 59x 59x 48x 48x 11x 11x 11x 11x 59x 30x 30x 32x 62x 62x 49x 49x 13x 13x 13x 13x 62x 30x 32x 19x 32x 8x 11x 3x 3x 3x 3x 10524x 10524x 73x 73x 73x 42x 73x 31x 31x 73x 10524x 10524x 1094x 1094x 1094x 80x 80x 1014x 1014x 1094x 859x 859x 1014x 1014x 10524x 10524x | 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;
}
} |