@hokaccha/sql-formatter
Version:
Format whitespace in a SQL query to make it more readable
69 lines • 1.92 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("../utils");
const INDENT_TYPE_TOP_LEVEL = "top-level";
const INDENT_TYPE_BLOCK_LEVEL = "block-level";
/**
* Manages indentation levels.
*
* There are two types of indentation levels:
*
* - BLOCK_LEVEL : increased by open-parenthesis
* - TOP_LEVEL : increased by RESERVED_TOP_LEVEL words
*/
class Indentation {
/**
* @param {String} indent Indent value
*/
constructor(indent) {
this.indent = indent;
this.indentTypes = [];
}
/**
* Returns current indentation string.
* @return {String}
*/
getIndent() {
return this.indent.repeat(this.indentTypes.length);
}
/**
* Increases indentation by one top-level indent.
*/
increaseTopLevel() {
this.indentTypes.push(INDENT_TYPE_TOP_LEVEL);
}
/**
* Increases indentation by one block-level indent.
*/
increaseBlockLevel() {
this.indentTypes.push(INDENT_TYPE_BLOCK_LEVEL);
}
/**
* Decreases indentation by one top-level indent.
* Does nothing when the previous indent is not top-level.
*/
decreaseTopLevel() {
if (this.indentTypes.length > 0 &&
(0, utils_1.last)(this.indentTypes) === INDENT_TYPE_TOP_LEVEL) {
this.indentTypes.pop();
}
}
/**
* Decreases indentation by one block-level indent.
* If there are top-level indents within the block-level indent,
* throws away these as well.
*/
decreaseBlockLevel() {
while (this.indentTypes.length > 0) {
const type = this.indentTypes.pop();
if (type !== INDENT_TYPE_TOP_LEVEL) {
break;
}
}
}
resetIndentation() {
this.indentTypes = [];
}
}
exports.default = Indentation;
//# sourceMappingURL=Indentation.js.map