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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 293x 293x 1x 1x 50127x 50127x 50127x 50127x 1x 1x 50117x 50117x 50117x 1x 1x 50410x 50410x 1x 1x 1x 1x 1x 1x 1x 1x 1x 293x 293x 293x 293x 18400x 9573x 9573x 10x 9573x 9563x 9563x 9573x 18400x 18400x 293x 293x 293x 293x 293x 1x 1x 1x 293x 293x 293x 293x 293x 293x 293x 293x 293x 293x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 1638x 1638x 2x 2x 2x 1638x 3x 3x 3x 1636x 1x 1x 1x 1633x 289x 289x 289x 1638x 1638x 48479x 48479x 50117x 213x 9x 9x 213x 204x 204x 204x 50117x 5x 5x 5x 5x 48266x 5x 5x 5x 5x 5x 48265x 48265x 50117x 134x 2x 134x 4x 4x 134x 50117x 4x 4x 4x 4x 4x 4x 48127x 48127x 50117x 289x 289x 289x 289x 50117x 50117x 9711x 9711x 50117x 1597x 1597x 1597x 1597x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 50117x 3034x 3034x 3034x 50117x 130x 130x 130x 130x 50117x 33366x 33366x 50117x 50117x 293x 293x 293x 293x 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, " ").replace(/\u000b/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 (doubled), continue string
build += stream.takeNext();
col++;
} else if (next === "\\" && nextNext === "\\") {
// escaped backslash (e.g. '\\' in ltrim/rtrim calls), consume both chars
build += stream.takeNext();
col++;
} else if (next === "\\" && nextNext === "'") {
// backslash-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);
stream.takeNext(); // consume the '*' so it doesn't become prev for '*/' detection
col++;
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 "*":
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();
}
} |