@glimmer/runtime
Version:
Minimal runtime needed to render Glimmer templates
113 lines (95 loc) • 16 kB
JavaScript
import { valueForRef } from '@glimmer/reference';
import { assert, fillNulls, LOCAL_LOGGER } from '@glimmer/util';
import { $fp, $pc, $ra, $sp } from '@glimmer/vm';
import { isScopeReference } from './scope';
import { DESTROYABLE_STACK, INNER_VM, STACKS } from './symbols';
import { CURSOR_STACK } from './vm/element-builder';
export class AppendOpcodes {
constructor() {
this.evaluateOpcode = fillNulls(104
/* Size */
).slice();
}
add(name, evaluate, kind = 'syscall') {
this.evaluateOpcode[name] = {
syscall: kind !== 'machine',
evaluate
};
}
debugBefore(vm, opcode) {
let params = undefined;
let opName = undefined;
if (false
/* LOCAL_SHOULD_LOG */
) {
let pos = vm[INNER_VM].fetchRegister($pc) - opcode.size;
[opName, params] = []; // console.log(`${typePos(vm['pc'])}.`);
LOCAL_LOGGER.log(`${pos}. ${""}`);
let debugParams = [];
for (let prop in params) {
debugParams.push(prop, '=', params[prop]);
}
LOCAL_LOGGER.log(...debugParams);
}
let sp;
if (false
/* LOCAL_DEBUG */
) {
sp = vm.fetchValue($sp);
}
return {
sp: sp,
pc: vm.fetchValue($pc),
name: opName,
params,
type: opcode.type,
isMachine: opcode.isMachine,
size: opcode.size,
state: undefined
};
}
debugAfter(vm, pre) {
let {
sp,
type,
isMachine,
pc
} = pre;
if (false
/* LOCAL_DEBUG */
) {
let meta = type;
let actualChange = vm.fetchValue($sp) - sp;
if (meta && meta.check && typeof meta.stackChange === 'number' && meta.stackChange !== actualChange) {
throw new Error(`Error in ${pre.name}:\n\n${pc}. ${""}\n\nStack changed by ${actualChange}, expected ${meta.stackChange}`);
}
if (false
/* LOCAL_SHOULD_LOG */
) {
LOCAL_LOGGER.log('%c -> pc: %d, ra: %d, fp: %d, sp: %d, s0: %O, s1: %O, t0: %O, t1: %O, v0: %O', 'color: orange', vm[INNER_VM].registers[$pc], vm[INNER_VM].registers[$ra], vm[INNER_VM].registers[$fp], vm[INNER_VM].registers[$sp], vm['s0'], vm['s1'], vm['t0'], vm['t1'], vm['v0']);
LOCAL_LOGGER.log('%c -> eval stack', 'color: red', vm.stack.toArray());
LOCAL_LOGGER.log('%c -> block stack', 'color: magenta', vm.elements().debugBlocks());
LOCAL_LOGGER.log('%c -> destructor stack', 'color: violet', vm[DESTROYABLE_STACK].toArray());
if (vm[STACKS].scope.current === null) {
LOCAL_LOGGER.log('%c -> scope', 'color: green', 'null');
} else {
LOCAL_LOGGER.log('%c -> scope', 'color: green', vm.scope().slots.map(s => isScopeReference(s) ? valueForRef(s) : s));
}
LOCAL_LOGGER.log('%c -> elements', 'color: blue', vm.elements()[CURSOR_STACK].current.element);
LOCAL_LOGGER.log('%c -> constructing', 'color: aqua', vm.elements()['constructing']);
}
}
}
evaluate(vm, opcode, type) {
let operation = this.evaluateOpcode[type];
if (operation.syscall) {
(false && assert(!opcode.isMachine, `BUG: Mismatch between operation.syscall (${operation.syscall}) and opcode.isMachine (${opcode.isMachine}) for ${opcode.type}`));
operation.evaluate(vm, opcode);
} else {
(false && assert(opcode.isMachine, `BUG: Mismatch between operation.syscall (${operation.syscall}) and opcode.isMachine (${opcode.isMachine}) for ${opcode.type}`));
operation.evaluate(vm[INNER_VM], opcode);
}
}
}
export const APPEND_OPCODES = new AppendOpcodes();
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evaluate: Syscall }\n  | { syscall: false; evaluate: MachineOpcode };\n\nexport type DebugState = {\n  pc: number;\n  sp: number;\n  type: number;\n  isMachine: 0 | 1;\n  size: number;\n  params?: Maybe<Dict>;\n  name?: string;\n  state: unknown;\n};\n\nexport class AppendOpcodes {\n  private evaluateOpcode: Evaluate[] = fillNulls<Evaluate>(Op.Size).slice();\n\n  add<Name extends Op>(name: Name, evaluate: Syscall): void;\n  add<Name extends Op>(name: Name, evaluate: MachineOpcode, kind: 'machine'): void;\n  add<Name extends Op>(name: Name, evaluate: Syscall | MachineOpcode, kind = 'syscall'): void {\n    this.evaluateOpcode[name as number] = {\n      syscall: kind !== 'machine',\n      evaluate,\n    } as Evaluate;\n  }\n\n  debugBefore(vm: VM, opcode: RuntimeOp): DebugState {\n    let params: Maybe<Dict> = undefined;\n    let opName: string | undefined = undefined;\n\n    if (LOCAL_SHOULD_LOG) {\n      let pos = vm[INNER_VM].fetchRegister($pc) - opcode.size;\n\n      [opName, params] = debug(vm[CONSTANTS], opcode, opcode.isMachine)!;\n\n      // console.log(`${typePos(vm['pc'])}.`);\n      LOCAL_LOGGER.log(`${pos}. ${logOpcode(opName, params)}`);\n\n      let debugParams = [];\n      for (let prop in params) {\n        debugParams.push(prop, '=', params[prop]);\n      }\n\n      LOCAL_LOGGER.log(...debugParams);\n    }\n\n    let sp: number;\n\n    if (LOCAL_DEBUG) {\n      sp = vm.fetchValue($sp);\n    }\n\n    recordStackSize(vm.fetchValue($sp));\n    return {\n      sp: sp!,\n      pc: vm.fetchValue($pc),\n      name: opName,\n      params,\n      type: opcode.type,\n      isMachine: opcode.isMachine,\n      size: opcode.size,\n      state: undefined,\n    };\n  }\n\n  debugAfter(vm: VM, pre: DebugState) {\n    let { sp, type, isMachine, pc } = pre;\n\n    if (LOCAL_DEBUG) {\n      let meta = opcodeMetadata(type, isMachine);\n      let actualChange = vm.fetchValue($sp) - sp!;\n      if (\n        meta &&\n        meta.check &&\n        typeof meta.stackChange! === 'number' &&\n        meta.stackChange! !== actualChange\n      ) {\n        throw new Error(\n          `Error in ${pre.name}:\\n\\n${pc}. ${logOpcode(\n            pre.name!,\n            pre.params!\n          )}\\n\\nStack changed by ${actualChange}, expected ${meta.stackChange!}`\n        );\n      }\n\n      if (LOCAL_SHOULD_LOG) {\n        LOCAL_LOGGER.log(\n          '%c -> pc: %d, ra: %d, fp: %d, sp: %d, s0: %O, s1: %O, t0: %O, t1: %O, v0: %O',\n          'color: orange',\n          vm[INNER_VM].registers[$pc],\n          vm[INNER_VM].registers[$ra],\n          vm[INNER_VM].registers[$fp],\n          vm[INNER_VM].registers[$sp],\n          vm['s0'],\n          vm['s1'],\n          vm['t0'],\n          vm['t1'],\n          vm['v0']\n        );\n        LOCAL_LOGGER.log('%c -> eval stack', 'color: red', vm.stack.toArray());\n        LOCAL_LOGGER.log('%c -> block stack', 'color: magenta', vm.elements().debugBlocks());\n        LOCAL_LOGGER.log(\n          '%c -> destructor stack',\n          'color: violet',\n          vm[DESTROYABLE_STACK].toArray()\n        );\n        if (vm[STACKS].scope.current === null) {\n          LOCAL_LOGGER.log('%c -> scope', 'color: green', 'null');\n        } else {\n          LOCAL_LOGGER.log(\n            '%c -> scope',\n            'color: green',\n            vm.scope().slots.map((s) => (isScopeReference(s) ? valueForRef(s) : s))\n          );\n        }\n\n        LOCAL_LOGGER.log(\n          '%c -> elements',\n          'color: blue',\n          vm.elements()[CURSOR_STACK].current!.element\n        );\n\n        LOCAL_LOGGER.log('%c -> constructing', 'color: aqua', vm.elements()['constructing']);\n      }\n    }\n  }\n\n  evaluate(vm: VM, opcode: RuntimeOp, type: number) {\n    let operation = this.evaluateOpcode[type];\n\n    if (operation.syscall) {\n      assert(\n        !opcode.isMachine,\n        `BUG: Mismatch between operation.syscall (${operation.syscall}) and opcode.isMachine (${opcode.isMachine}) for ${opcode.type}`\n      );\n      operation.evaluate(vm, opcode);\n    } else {\n      assert(\n        opcode.isMachine,\n        `BUG: Mismatch between operation.syscall (${operation.syscall}) and opcode.isMachine (${opcode.isMachine}) for ${opcode.type}`\n      );\n      operation.evaluate(vm[INNER_VM], opcode);\n    }\n  }\n}\n\nexport const APPEND_OPCODES = new AppendOpcodes();\n"],"sourceRoot":""}