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feat(parser): WASM VT500 scanner with ScanResult SOA dispatch

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- Add C WASM scanner emitting structure-of-arrays ops (kinds, starts, lengths, aux, params)
- Integrate scan+dispatch in EscapeSequenceParser with async handler resume
- Fix CSI fast-path final byte index, ERROR state reporting, and precedingJoinState for REP
- Add build pipeline (build_parser_wasm.sh, transition table generator, wasm embed)

Co-authored-by: Daniel Imms <Tyriar@users.noreply.github.com>
This commit is contained in:
Cursor Agent
2026-05-31 21:35:02 +00:00
co-authored by Daniel Imms
parent 936442c813
commit 3eca55a80d
15 changed files with 1571 additions and 381 deletions
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src/common/parser/EscapeSequenceParser.test.ts
+23 -23
View File
@@ -77,10 +77,10 @@ class TestEscapeSequenceParser extends EscapeSequenceParser {
public get realParams(): IParams {
return this._params;
}
public get collect(): string {
public get collectStr(): string {
return this.identToString(this._collect);
}
public set collect(value: string) {
public set collectStr(value: string) {
this._collect = 0;
for (let i = 0; i < value.length; ++i) {
this._collect <<= 8;
@@ -248,19 +248,19 @@ describe('EscapeSequenceParser', () => {
assert.equal(parser.currentState, ParserState.GROUND);
assert.equal(parser.osc, '');
assert.deepEqual(parser.params, [0]);
assert.equal(parser.collect, '');
assert.equal(parser.collectStr, '');
});
it('reset states', () => {
parser.currentState = 124;
parser.osc = '#';
parser.params = [123];
parser.collect = '#';
parser.collectStr = '#';
parser.reset();
assert.equal(parser.currentState, ParserState.GROUND);
assert.equal(parser.osc, '');
assert.deepEqual(parser.params, [0]);
assert.equal(parser.collect, '');
assert.equal(parser.collectStr, '');
});
});
describe('state transitions and actions', () => {
@@ -327,11 +327,11 @@ describe('EscapeSequenceParser', () => {
for (state in states) {
parser.currentState = state;
parser.params = [23];
parser.collect = '#';
parser.collectStr = '#';
parse(parser, '\x1b');
assert.equal(parser.currentState, ParserState.ESCAPE);
assert.deepEqual(parser.params, [0]);
assert.equal(parser.collect, '');
assert.equal(parser.collectStr, '');
parser.reset();
}
});
@@ -383,7 +383,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.ESCAPE;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.ESCAPE_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -419,7 +419,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.ESCAPE_INTERMEDIATE;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.ESCAPE_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -442,21 +442,21 @@ describe('EscapeSequenceParser', () => {
// C0
parser.currentState = ParserState.ESCAPE;
parser.params = [123];
parser.collect = '#';
parser.collectStr = '#';
parse(parser, '[');
assert.equal(parser.currentState, ParserState.CSI_ENTRY);
assert.deepEqual(parser.params, [0]);
assert.equal(parser.collect, '');
assert.equal(parser.collectStr, '');
parser.reset();
// C1
for (state in states) {
parser.currentState = state;
parser.params = [123];
parser.collect = '#';
parser.collectStr = '#';
parse(parser, '\x9b');
assert.equal(parser.currentState, ParserState.CSI_ENTRY);
assert.deepEqual(parser.params, [0]);
assert.equal(parser.collect, '');
assert.equal(parser.collectStr, '');
parser.reset();
}
});
@@ -517,7 +517,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.CSI_ENTRY;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.CSI_PARAM);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -582,7 +582,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.CSI_ENTRY;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.CSI_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -593,7 +593,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.CSI_PARAM;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.CSI_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -619,7 +619,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.CSI_INTERMEDIATE;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.CSI_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -848,7 +848,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.DCS_ENTRY;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.DCS_PARAM);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -930,7 +930,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.DCS_ENTRY;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.DCS_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -941,7 +941,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.DCS_PARAM;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.DCS_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -965,7 +965,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.DCS_INTERMEDIATE;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.DCS_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});
@@ -976,7 +976,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.DCS_INTERMEDIATE;
parse(parser, '\x20' + chars[i]);
assert.equal(parser.currentState, ParserState.DCS_IGNORE);
assert.equal(parser.collect, '\x20');
assert.equal(parser.collectStr, '\x20');
parser.reset();
}
});
@@ -1079,7 +1079,7 @@ describe('EscapeSequenceParser', () => {
parser.currentState = ParserState.APC_ENTRY;
parse(parser, collect[i]);
assert.equal(parser.currentState, ParserState.APC_INTERMEDIATE);
assert.equal(parser.collect, collect[i]);
assert.equal(parser.collectStr, collect[i]);
parser.reset();
}
});