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 115x 115x 1x 1x 22077x 22077x 22077x 22077x 1x 1x 22077x 22077x 22077x 1x 1x 22192x 22192x 1x 1x 1x 1x 1x 1x 1x 1x 1x 115x 115x 115x 115x 7715x 3840x 8x 3840x 3832x 3832x 3840x 7715x 7715x 115x 115x 115x 115x 115x 1x 1x 1x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 1037x 1037x 177x 177x 177x 1037x 1037x 21040x 21040x 22077x 200x 8x 8x 200x 192x 192x 192x 22077x 5x 5x 5x 5x 20840x 3x 3x 3x 3x 3x 20840x 20840x 22077x 125x 2x 125x 3x 3x 125x 22077x 3x 3x 3x 3x 20712x 20712x 22077x 177x 177x 177x 22077x 4127x 4127x 22077x 793x 793x 793x 793x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 22077x 1242x 1242x 1242x 22077x 14373x 14373x 22077x 22077x 115x 115x 115x 115x 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));
} 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();
}
} |