Function processPair

test/fixtures/snapshot/typescript.js:147701–147744

(currentItem, currentStartLine, currentParent, previousItem, previousStartLine, previousParent, contextNode, dynamicIndentation)

                return lineAction;
            }
            function processPair(currentItem, currentStartLine, currentParent, previousItem, previousStartLine, previousParent, contextNode, dynamicIndentation) {
                formattingContext.updateContext(previousItem, previousParent, currentItem, currentParent, contextNode);
                var rules = getRules(formattingContext);
                var trimTrailingWhitespaces = formattingContext.options.trimTrailingWhitespace !== false;
                var lineAction = 0 /* LineAction.None */;
                if (rules) {
                    // Apply rules in reverse order so that higher priority rules (which are first in the array)
                    // win in a conflict with lower priority rules.
                    ts.forEachRight(rules, function (rule) {
                        lineAction = applyRuleEdits(rule, previousItem, previousStartLine, currentItem, currentStartLine);
                        if (dynamicIndentation) {
                            switch (lineAction) {
                                case 2 /* LineAction.LineRemoved */:
                                    // Handle the case where the next line is moved to be the end of this line.
                                    // In this case we don't indent the next line in the next pass.
                                    if (currentParent.getStart(sourceFile) === currentItem.pos) {
                                        dynamicIndentation.recomputeIndentation(/*lineAddedByFormatting*/ false, contextNode);
                                    }
                                    break;
                                case 1 /* LineAction.LineAdded */:
                                    // Handle the case where token2 is moved to the new line.
                                    // In this case we indent token2 in the next pass but we set
                                    // sameLineIndent flag to notify the indenter that the indentation is within the line.
                                    if (currentParent.getStart(sourceFile) === currentItem.pos) {
                                        dynamicIndentation.recomputeIndentation(/*lineAddedByFormatting*/ true, contextNode);
                                    }
                                    break;
                                default:
                                    ts.Debug.assert(lineAction === 0 /* LineAction.None */);
                            }
                        }
                        // We need to trim trailing whitespace between the tokens if they were on different lines, and no rule was applied to put them on the same line
                        trimTrailingWhitespaces = trimTrailingWhitespaces && !(rule.action & 16 /* RuleAction.DeleteSpace */) && rule.flags !== 1 /* RuleFlags.CanDeleteNewLines */;
                    });
                }
                else {
                    trimTrailingWhitespaces = trimTrailingWhitespaces && currentItem.kind !== 1 /* SyntaxKind.EndOfFileToken */;
                }
                if (currentStartLine !== previousStartLine && trimTrailingWhitespaces) {
                    // We need to trim trailing whitespace between the tokens if they were on different lines, and no rule was applied to put them on the same line
                    trimTrailingWhitespacesForLines(previousStartLine, currentStartLine, previousItem);
                }
                return lineAction;
            }
            function insertIndentation(pos, indentation, lineAdded) {
                var indentationString = getIndentationString(indentation, options);
                if (lineAdded) {