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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 20665x 20665x 20665x 20665x 20665x 20665x 1x 10339x 10339x 10339x 10339x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 30813x 10339x 10339x 9822x 9822x 10339x 10339x 241x 241x 10339x 10339x 265x 265x 265x 265x 12x 12x 253x 265x 25x 25x 25x 25x 25x 25x 3x 3x 22x 25x 25x 9x 9x 25x 13x 13x 9x 9x 25x 4x 4x 4x 25x 253x 253x 253x 10339x 10339x 9x 9x 9x 16x 16x 16x 16x 1x 1x 15x 16x 19x 19x 19x 2x 2x 19x 19x 19x 19x 13x 9x 6x 6x 9x 3x 3x 3x 1x 3x 2x 2x 2x 4x 9x 4x 9x 12x 12x 4x 4x 4x 10339x 10339x | import {Issue} from "../issue";
import * as Expressions from "../abap/2_statements/expressions";
import * as Statements from "../abap/2_statements/statements";
import * as Structures from "../abap/3_structures/structures";
import {ABAPRule} from "./_abap_rule";
import {BasicRuleConfig} from "./_basic_rule_config";
import {IRuleMetadata, RuleTag} from "./_irule";
import {ABAPFile} from "../abap/abap_file";
import {ExpressionNode} from "../abap/nodes";
export class ChangeIfToCaseConf extends BasicRuleConfig {
/** skip specific names, case insensitive regular expression
* @uniqueItems true
*/
public skipNames?: string[] = [];
}
export class ChangeIfToCase extends ABAPRule {
private conf = new ChangeIfToCaseConf();
public getMetadata(): IRuleMetadata {
return {
key: "change_if_to_case",
title: "Change IF to CASE",
shortDescription: `Finds IF constructs that can be changed to CASE`,
// eslint-disable-next-line max-len
extendedInformation: `https://github.com/SAP/styleguides/blob/main/clean-abap/CleanABAP.md#prefer-case-to-else-if-for-multiple-alternative-conditions
If the first comparison is a boolean compare, no issue is reported.`,
tags: [RuleTag.SingleFile, RuleTag.Styleguide],
badExample: `IF l_fcat-fieldname EQ 'FOO'.
ELSEIF l_fcat-fieldname = 'BAR'
OR l_fcat-fieldname = 'MOO'.
ENDIF.`,
goodExample: `CASE l_fcat-fieldname.
WHEN 'FOO'.
WHEN 'BAR' OR 'MOO'.
ENDCASE.`,
};
}
public getConfig() {
return this.conf;
}
public setConfig(conf: ChangeIfToCaseConf) {
this.conf = conf;
}
public runParsed(file: ABAPFile) {
const issues: Issue[] = [];
const stru = file.getStructure();
if (stru === undefined) {
return issues;
}
for (const i of stru.findAllStructuresRecursive(Structures.If)) {
const conds: (ExpressionNode | undefined)[] = [];
const ifStatement = i.findDirectStatement(Statements.If);
if (ifStatement === undefined) {
continue;
}
if (ifStatement.concatTokens().match(/ (abap_true|abap_false)\s*\./i)) {
continue;
}
conds.push(ifStatement?.findDirectExpression(Expressions.Cond));
for (const ei of i.findDirectStructures(Structures.ElseIf)) {
conds.push(ei.findDirectStatement(Statements.ElseIf)?.findDirectExpression(Expressions.Cond));
}
if (conds.length === 1) {
continue;
}
const issue = this.analyze(conds);
if (issue === true) {
const message = "Change IF to CASE";
issues.push(Issue.atStatement(file, ifStatement, message, this.getMetadata().key, this.getConfig().severity));
}
}
return issues;
}
private analyze(conds: (ExpressionNode | undefined)[]): boolean {
const tuples: {left: string, right: string}[] = [];
for (const c of conds) {
if (c === undefined) {
continue;
}
if (c.findFirstExpression(Expressions.CondSub)) {
return false;
} else if (c.findDirectTokenByText("AND") || c.findDirectTokenByText("EQUIV")) {
return false;
}
for (const compare of c.findAllExpressions(Expressions.Compare)) {
const op = compare.findDirectExpression(Expressions.CompareOperator)?.concatTokens().toUpperCase();
if (compare.getChildren().length !== 3) {
return false;
} else if (op !== "=" && op !== "EQ") {
return false;
}
const left = compare.getChildren()[0]?.concatTokens()?.toUpperCase();
const right = compare.getChildren()[2]?.concatTokens()?.toUpperCase();
tuples.push({left, right});
}
}
if (tuples.length === 1) {
return false;
}
let chain = "";
if (tuples[0].left === tuples[1].left) {
chain = tuples[0].left;
} else if (tuples[0].left === tuples[1].right) {
chain = tuples[0].left;
} else if (tuples[0].right === tuples[1].right) {
chain = tuples[0].right;
} else if (tuples[0].right === tuples[1].left) {
chain = tuples[0].right;
} else {
return false;
}
for (const skip of this.getConfig().skipNames || []) {
const reg = new RegExp(skip, "i");
if (chain.match(reg)) {
return false;
}
}
for (const t of tuples) {
if (t.left !== chain && t.right !== chain) {
return false;
}
}
return true;
}
} |