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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 132x 132x 1x 1x 25589x 25589x 25589x 25589x 1x 1x 25587x 25587x 25587x 1x 1x 25719x 25719x 1x 1x 1x 1x 1x 1x 1x 1x 1x 132x 132x 132x 132x 9230x 4374x 4374x 10x 4374x 4364x 4364x 4374x 9230x 9230x 132x 132x 132x 132x 132x 1x 1x 1x 132x 132x 132x 132x 132x 132x 132x 132x 132x 132x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 1173x 1173x 2x 2x 2x 1173x 194x 194x 194x 1173x 1173x 24414x 24414x 25587x 213x 9x 9x 213x 204x 204x 204x 25587x 5x 5x 5x 5x 24201x 5x 5x 5x 5x 5x 24200x 24200x 25587x 125x 2x 125x 3x 3x 125x 25587x 3x 3x 3x 3x 24072x 24072x 25587x 194x 194x 194x 25587x 5087x 5087x 25587x 927x 927x 927x 927x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 25587x 1434x 1434x 1434x 25587x 16430x 16430x 25587x 25587x 132x 132x 132x 132x 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 "'":
mode = Mode.String;
build += next;
break;
case " ":
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;
default:
build += next;
break;
}
}
result.add(build, row, col, mode);
return result.get();
}
} |