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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 198x 198x 1x 1x 36615x 36615x 36615x 36615x 1x 1x 36613x 36613x 36613x 1x 1x 36811x 36811x 1x 1x 1x 1x 1x 1x 1x 1x 1x 198x 198x 198x 198x 13536x 6679x 6679x 10x 6679x 6669x 6669x 6679x 13536x 13536x 198x 198x 198x 198x 198x 1x 1x 1x 198x 198x 198x 198x 198x 198x 198x 198x 198x 198x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 1355x 1355x 2x 2x 2x 1355x 230x 230x 230x 1355x 1355x 35258x 35258x 36613x 213x 9x 9x 213x 204x 204x 204x 36613x 5x 5x 5x 5x 35045x 5x 5x 5x 5x 5x 35044x 35044x 36613x 125x 2x 125x 3x 3x 125x 36613x 3x 3x 3x 3x 34916x 34916x 36613x 230x 230x 230x 230x 36613x 36613x 7144x 7144x 36613x 1265x 1265x 1265x 1265x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 36613x 2164x 2164x 2164x 36613x 119x 119x 119x 119x 36613x 23994x 23994x 36613x 36613x 198x 198x 198x 198x 1x | import {Comment, Identifier} from "../abap/1_lexer/tokens";
import {AbstractToken} from "../abap/1_lexer/tokens/abstract_token";
import {IFile} from "../files/_ifile";
import {Position} from "../position";
// todo: Keywords must be all uppercase, all lowercase, or in lowercase with an
// uppercase initial letter. Other mixes of uppercase and lowercase are not allowed
class Stream {
private buffer: string;
public constructor(buffer: string) {
this.buffer = buffer;
}
public takeNext(): string {
const next = this.buffer.substring(0, 1);
this.buffer = this.buffer.substring(1);
return next;
}
public peekNext(): string {
const next = this.buffer.substring(0, 1);
return next;
}
public length(): number {
return this.buffer.length;
}
}
enum Mode {
Default,
String,
SingleLineComment,
MultiLineComment,
}
class Result {
private readonly result: AbstractToken[] = [];
public add(text: string, row: number, col: number, mode: Mode): string {
if (text.length > 0) {
if (mode === Mode.SingleLineComment
&& (text.startsWith("--") || text.startsWith("//"))) {
this.result.push(new Comment(new Position(row, col - text.length), text));
} else {
this.result.push(new Identifier(new Position(row, col), text));
}
}
return "";
}
public get() {
return this.result;
}
}
export class CDSLexer {
public static run(file: IFile): AbstractToken[] {
const result = new Result();
let mode = Mode.Default;
let row = 1;
let col = 1;
let build = "";
const stream = new Stream(file.getRaw().replace(/\r/g, "").replace(/\u00a0/g, " "));
let next = "";
while (stream.length() > 0) {
const prev = next;
next = stream.takeNext();
const nextNext = stream.peekNext();
col++;
// string handling
if (mode === Mode.String) {
build += next;
if (next === "'" && nextNext === "'") {
// escaped single quote, continue string
build += stream.takeNext();
col++;
} else if (next === "'") {
build = result.add(build, row, col, mode);
mode = Mode.Default;
}
continue;
}
// single line comment handling
if (mode === Mode.SingleLineComment) {
if (next === "\n") {
build = result.add(build, row, col, mode);
mode = Mode.Default;
} else {
build += next;
continue;
}
} else if (mode === Mode.Default && next === "/" && nextNext === "/") {
mode = Mode.SingleLineComment;
build = result.add(build, row, col, mode);
build += next;
continue;
} else if (mode === Mode.Default && next === "-" && nextNext === "-") {
mode = Mode.SingleLineComment;
build = result.add(build, row, col, mode);
build += next;
continue;
}
// multi line comment handling
if (mode === Mode.MultiLineComment) {
if (next === "\n") {
row++;
} else if (prev === "*" && next === "/") {
mode = Mode.Default;
}
continue;
} else if (mode === Mode.Default && next === "/" && nextNext === "*") {
mode = Mode.MultiLineComment;
build = result.add(build, row, col, mode);
continue;
}
switch (next) {
case "'":
build = result.add(build, row, col, mode);
mode = Mode.String;
build += next;
break;
case " ":
case "\t":
build = result.add(build, row, col, mode);
break;
case "\n":
build = result.add(build, row, col, mode);
row++;
col = 0;
break;
case ";":
case ":":
case ",":
case ".":
case "{":
case "}":
case "(":
case ")":
case "[":
case "]":
case "=":
case "<":
case ">":
case "+":
case "-":
case "*":
case "/":
build = result.add(build, row, col, mode);
result.add(next, row, col, mode);
break;
case "@":
// @ starts a new annotation; flush current token and start building with @
build = result.add(build, row, col, mode);
build = "@";
break;
default:
build += next;
break;
}
}
result.add(build, row, col, mode);
return result.get();
}
} |