GeneratorPrototype.js [plain text]
@globalPrivate
function generatorResume(generator, state, generatorThis, sentValue, value, resumeMode)
{
"use strict";
var done = state === @GeneratorStateCompleted;
if (!done) {
try {
@putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateExecuting);
value = @getGeneratorInternalField(generator, @generatorFieldNext).@call(generatorThis, generator, state, sentValue, resumeMode, @getGeneratorInternalField(generator, @generatorFieldFrame));
if (@getGeneratorInternalField(generator, @generatorFieldState) === @GeneratorStateExecuting) {
@putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateCompleted);
done = true;
}
} catch (error) {
@putGeneratorInternalField(generator, @generatorFieldState, @GeneratorStateCompleted);
throw error;
}
}
return { value, done };
}
function next(value)
{
"use strict";
if (!@isGenerator(this))
@throwTypeError("|this| should be a generator");
var state = @getGeneratorInternalField(this, @generatorFieldState);
if (state === @GeneratorStateExecuting)
@throwTypeError("Generator is executing");
return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), value, @undefined, @GeneratorResumeModeNormal);
}
function return(value)
{
"use strict";
if (!@isGenerator(this))
@throwTypeError("|this| should be a generator");
var state = @getGeneratorInternalField(this, @generatorFieldState);
if (state === @GeneratorStateExecuting)
@throwTypeError("Generator is executing");
return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), value, value, @GeneratorResumeModeReturn);
}
function throw(exception)
{
"use strict";
if (!@isGenerator(this))
@throwTypeError("|this| should be a generator");
var state = @getGeneratorInternalField(this, @generatorFieldState);
if (state === @GeneratorStateExecuting)
@throwTypeError("Generator is executing");
if (state === @GeneratorStateCompleted)
throw exception;
return @generatorResume(this, state, @getGeneratorInternalField(this, @generatorFieldThis), exception, @undefined, @GeneratorResumeModeThrow);
}