waveterm/xterm.js
0
0
Fork 0
mirror of https://github.com/wavetermdev/xterm.js.git synced 2026-08-05 13:43:48 -07:00
Code Issues Packages Projects Releases Wiki Activity

add array fallback for TransitionTable

Browse Source
This commit is contained in:
Jörg Breitbart
2018-04-30 11:27:10 +02:00
parent f5375c3a99
commit a1035269d5
1 changed files with 10 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/EscapeSequenceParser.ts
+10 -10
View File
@@ -130,13 +130,13 @@ function r(a: number, b: number): number[] {
}
// transition table of the FSM
// TODO: fallback to array
export class TransitionTable {
public table: Uint8Array;
public table: Uint8Array | number[];
constructor(length: number) {
this.table = new Uint8Array(length);
this.table = (typeof Uint32Array === 'undefined')
? new Array(length)
: new Uint32Array(length);
}
add(inp: number, state: number, action: number | null, next: number | null): void {
@@ -157,8 +157,8 @@ let EXECUTABLES = r(0x00, 0x18);
EXECUTABLES.push(0x19);
EXECUTABLES.concat(r(0x1c, 0x20));
// default transition of the FSM is [error, GROUND]
let DEFAULT_TRANSITION = ParserAction.ERROR << 4 | ParserState.GROUND;
// default transition is ParserAction.ERROR, ParserState.GROUND
const DEFAULT_TRANSITION = ParserAction.ERROR << 4 | ParserState.GROUND;
// default DEC/ANSI compatible state transition table
// as defined by https://vt100.net/emu/dec_ansi_parser
@@ -168,12 +168,12 @@ export const VT500_TRANSITION_TABLE = (function (): TransitionTable {
let states: number[] = r(ParserState.GROUND, ParserState.DCS_PASSTHROUGH + 1);
let state: any;
// table with default transition [any] --> [error, GROUND]
// table with default transition [any] --> DEFAULT_TRANSITION
for (state in states) {
// table lookup is capped at 0xa0 in parse
// any higher will be treated by the error action
for (let code = 0; code < 160; ++code) {
table[state << 8 | code] = DEFAULT_TRANSITION;
table.add(code, state, ParserAction.ERROR, ParserState.GROUND);
}
}
@@ -292,7 +292,7 @@ class DcsDummy implements IDcsHandler {
export class EscapeSequenceParser implements IEscapeSequenceParser {
public initialState: number;
public currentState: number;
public transitions: TransitionTable;
readonly transitions: TransitionTable;
// buffers over several parse calls
protected _osc: string;
@@ -436,7 +436,7 @@ export class EscapeSequenceParser implements IEscapeSequenceParser {
let osc = this._osc;
let collect = this._collect;
let params = this._params;
let table: Uint8Array = this.transitions.table;
let table: Uint8Array | number[] = this.transitions.table;
let dcsHandler: IDcsHandler | null = this._activeDcsHandler;
let ident: string = '';