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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 120x 120x 1x 1x 23077x 23077x 23077x 23077x 1x 1x 23077x 23077x 23077x 1x 1x 23197x 23197x 1x 1x 1x 1x 1x 1x 1x 1x 1x 120x 120x 120x 120x 8141x 4020x 8x 4020x 4012x 4012x 4020x 8141x 8141x 120x 120x 120x 120x 120x 1x 1x 1x 120x 120x 120x 120x 120x 120x 120x 120x 120x 120x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 1057x 1057x 179x 179x 179x 1057x 1057x 22020x 22020x 23077x 200x 8x 8x 200x 192x 192x 192x 23077x 5x 5x 5x 5x 21820x 3x 3x 3x 3x 3x 21820x 21820x 23077x 125x 2x 125x 3x 3x 125x 23077x 3x 3x 3x 3x 21692x 21692x 23077x 179x 179x 179x 23077x 4344x 4344x 23077x 841x 841x 841x 841x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 23077x 1319x 1319x 1319x 23077x 15009x 15009x 23077x 23077x 120x 120x 120x 120x 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) {
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 === "'") {
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();
}
} |