@ -19,9 +19,7 @@ class DomGenerator extends Generator {
this . readonly = new Set ( ) ;
// initial values for e.g. window.innerWidth, if there's a <:Window> meta tag
this . builders = {
metaBindings : new CodeBuilder ( )
} ;
this . metaBindings = [ ] ;
}
helper ( name ) {
@ -57,21 +55,9 @@ export default function dom ( parsed, source, options ) {
const builders = {
main : new CodeBuilder ( ) ,
init : new CodeBuilder ( ) ,
_set : new CodeBuilder ( )
} ;
if ( options . dev ) {
builders . _set . addBlock ( deindent `
if ( typeof newState !== 'object' ) {
throw new Error ( 'Component .set was called without an object of data key-values to update.' ) ;
}
` );
}
builders . _set . addLine ( 'var oldState = this._state;' ) ;
builders . _set . addLine ( ` this._state = ${ generator . helper ( 'assign' ) } ( {}, oldState, newState ); ` ) ;
if ( computations . length ) {
const builder = new CodeBuilder ( ) ;
const differs = generator . helper ( 'differs' ) ;
@ -97,19 +83,26 @@ export default function dom ( parsed, source, options ) {
` );
}
if ( options . dev ) {
Array . from ( generator . readonly ) . forEach ( prop => {
builders . _set . addLine ( ` if ( ' ${ prop } ' in newState && !this._updatingReadonlyProperty ) throw new Error( "Cannot set read-only property ' ${ prop } '" ); ` ) ;
} ) ;
builders . _set . addBlock ( deindent `
$ { options . dev && deindent `
if ( typeof newState !== 'object' ) {
throw new Error ( 'Component .set was called without an object of data key-values to update.' ) ;
}
if ( computations . length ) {
builders . _set . addLine ( ` ${ generator . alias ( 'recompute' ) } ( this._state, newState, oldState, false ) ` ) ;
}
$ { Array . from ( generator . readonly ) . map ( prop =>
` if ( ' ${ prop } ' in newState && !this._updatingReadonlyProperty ) throw new Error( "Cannot set read-only property ' ${ prop } '" ); `
) }
` }
builders . _set . addLine ( ` ${ generator . helper ( 'dispatchObservers' ) } ( this, this._observers.pre, newState, oldState ); ` ) ;
if ( block . hasUpdateMethod ) builders . _set . addLine ( ` if ( this._fragment ) this._fragment.update( newState, this._state ); ` ) ; // TODO is the condition necessary?
builders . _set . addLine ( ` ${ generator . helper ( 'dispatchObservers' ) } ( this, this._observers.post, newState, oldState ); ` ) ;
var oldState = this . _state ;
this . _state = $ { generator . helper ( 'assign' ) } ( { } , oldState , newState ) ;
$ { computations . length && ` ${ generator . alias ( 'recompute' ) } ( this._state, newState, oldState, false ) ` }
$ { generator . helper ( 'dispatchObservers' ) } ( this , this . _observers . pre , newState , oldState ) ;
$ { block . hasUpdateMethod && ` this._fragment.update( newState, this._state ); ` }
$ { generator . helper ( 'dispatchObservers' ) } ( this , this . _observers . post , newState , oldState ) ;
$ { generator . hasComplexBindings && ` while ( this._bindings.length ) this._bindings.pop()(); ` }
$ { ( generator . hasComponents || generator . hasIntroTransitions ) && ` this._flush(); ` }
` );
if ( hasJs ) {
builders . main . addBlock ( ` [✂ ${ parsed . js . content . start } - ${ parsed . js . content . end } ✂] ` ) ;
@ -130,85 +123,30 @@ export default function dom ( parsed, source, options ) {
builders . main . addBlock ( block . render ( ) ) ;
} ) ;
builders . init . addLine ( ` this._torndown = false; ` ) ;
if ( parsed . css && options . css !== false ) {
builders . init . addLine ( ` if ( !document.getElementById( ${ JSON . stringify ( generator . cssId + '-style' ) } ) ) ${ generator . alias ( 'add_css' ) } (); ` ) ;
}
if ( generator . hasComponents || generator . hasIntroTransitions ) {
builders . init . addLine ( ` this._renderHooks = []; ` ) ;
}
if ( generator . hasComplexBindings ) {
builders . init . addBlock ( deindent `
this . _bindings = [ ] ;
this . _fragment = $ { generator . alias ( 'create_main_fragment' ) } ( this . _state , this ) ;
if ( options . target ) this . _fragment . mount ( options . target , null ) ;
while ( this . _bindings . length ) this . _bindings . pop ( ) ( ) ;
` );
builders . _set . addLine ( ` while ( this._bindings.length ) this._bindings.pop()(); ` ) ;
} else {
builders . init . addBlock ( deindent `
this . _fragment = $ { generator . alias ( 'create_main_fragment' ) } ( this . _state , this ) ;
if ( options . target ) this . _fragment . mount ( options . target , null ) ;
` );
}
if ( generator . hasComponents || generator . hasIntroTransitions ) {
const statement = ` this._flush(); ` ;
builders . init . addBlock ( statement ) ;
builders . _set . addBlock ( statement ) ;
}
if ( templateProperties . oncreate ) {
builders . init . addBlock ( deindent `
if ( options . _root ) {
options . _root . _renderHooks . push ( $ { generator . alias ( 'template' ) } . oncreate . bind ( this ) ) ;
} else {
$ { generator . alias ( 'template' ) } . oncreate . call ( this ) ;
}
` );
}
const constructorBlock = new CodeBuilder ( ) ;
constructorBlock . addLine ( ` options = options || {}; ` ) ;
if ( generator . usesRefs ) constructorBlock . addLine ( ` this.refs = {}; ` ) ;
constructorBlock . addLine (
` this._state = ${ templateProperties . data ? ` ${ generator . helper ( 'assign' ) } ( ${ generator . alias ( 'template' ) } .data(), options.data ) ` : ` options.data || {} ` } ; `
) ;
if ( ! generator . builders . metaBindings . isEmpty ( ) ) {
constructorBlock . addBlock ( generator . builders . metaBindings ) ;
}
if ( computations . length ) {
constructorBlock . addLine (
` ${ generator . alias ( 'recompute' ) } ( this._state, this._state, {}, true ); `
) ;
}
if ( options . dev ) {
generator . expectedProperties . forEach ( prop => {
constructorBlock . addLine (
` if ( !( ' ${ prop } ' in this._state ) ) console.warn( "Component was created without expected data property ' ${ prop } '" ); `
) ;
} ) ;
const sharedPath = options . shared === true ? 'svelte/shared.js' : options . shared ;
constructorBlock . addBlock (
` if ( !options.target && !options._root ) throw new Error( "'target' is a required option" ); `
) ;
const prototypeBase = ` ${ name } .prototype ` + ( templateProperties . methods ? ` , ${ generator . alias ( 'template' ) } .methods ` : '' ) ;
const proto = sharedPath ? ` ${ generator . helper ( 'proto' ) } ` : deindent `
{
$ {
[ 'get' , 'fire' , 'observe' , 'on' , 'set' , '_flush' ]
. map ( n => ` ${ n } : ${ generator . helper ( n ) } ` )
. join ( ',\n' )
}
} ` ;
if ( generator . bindingGroups . length ) {
constructorBlock . addLine ( ` this._bindingGroups = [ ${ Array ( generator . bindingGroups . length ) . fill ( '[]' ) . join ( ', ' ) } ]; ` ) ;
}
// TODO deprecate component.teardown()
builders . main . addBlock ( deindent `
function $ { name } ( options ) {
options = options || { } ;
$ { options . dev && ` if ( !options.target && !options._root ) throw new Error( "'target' is a required option" ); ` }
$ { generator . usesRefs && ` this.refs = {}; ` }
this . _state = $ { templateProperties . data ? ` ${ generator . helper ( 'assign' ) } ( ${ generator . alias ( 'template' ) } .data(), options.data ) ` : ` options.data || {} ` } ;
$ { generator . metaBindings }
$ { computations . length && ` ${ generator . alias ( 'recompute' ) } ( this._state, this._state, {}, true ); ` }
$ { options . dev && Array . from ( generator . expectedProperties ) . map ( prop => ` if ( !( ' ${ prop } ' in this._state ) ) console.warn( "Component was created without expected data property ' ${ prop } '" ); ` ) }
$ { generator . bindingGroups . length && ` this._bindingGroups = [ ${ Array ( generator . bindingGroups . length ) . fill ( '[]' ) . join ( ', ' ) } ]; ` }
constructorBlock . addBlock ( deindent `
this . _observers = {
pre : Object . create ( null ) ,
post : Object . create ( null )
@ -219,31 +157,27 @@ export default function dom ( parsed, source, options ) {
this . _root = options . _root || this ;
this . _yield = options . _yield ;
$ { builders . init }
` );
this . _torndown = false ;
$ { parsed . css && options . css !== false && ` if ( !document.getElementById( ${ JSON . stringify ( generator . cssId + '-style' ) } ) ) ${ generator . alias ( 'add_css' ) } (); ` }
$ { ( generator . hasComponents || generator . hasIntroTransitions ) && ` this._renderHooks = []; ` }
$ { generator . hasComplexBindings && ` this._bindings = []; ` }
builders . main . addBlock ( deindent `
function $ { name } ( options ) {
$ { constructorBlock }
}
` );
const sharedPath = options . shared === true ? 'svelte/shared.js' : options . shared ;
this . _fragment = $ { generator . alias ( 'create_main_fragment' ) } ( this . _state , this ) ;
if ( options . target ) this . _fragment . mount ( options . target , null ) ;
$ { generator . hasComplexBindings && ` while ( this._bindings.length ) this._bindings.pop()(); ` }
$ { ( generator . hasComponents || generator . hasIntroTransitions ) && ` this._flush(); ` }
const prototypeBase = ` ${ name } .prototype ` + ( templateProperties . methods ? ` , ${ generator . alias ( 'template' ) } .methods ` : '' ) ;
const proto = sharedPath ? ` ${ generator . helper ( 'proto' ) } ` : deindent `
{
$ {
[ 'get' , 'fire' , 'observe' , 'on' , 'set' , '_flush' ]
.map ( n => ` ${ n }: ${ generator . helper ( n ) } ` )
. join ( ',\n' )
$ { templateProperties . oncreate && deindent `
if ( options . _root ) {
options . _root . _renderHooks . push ( $ { generator . alias ( 'template' ) } . oncreate . bind ( this ) ) ;
} else {
$ { generator . alias ( 'template' ) } . oncreate . call ( this ) ;
` }
}
} ` ;
builders . main . addBlock ( ` ${ generator . helper ( 'assign' ) } ( ${ prototypeBase } , ${ proto } ); ` ) ;
$ { generator . helper ( 'assign' ) } ( $ { prototypeBase } , $ { proto } ) ;
// TODO deprecate component.teardown()
builders . main . addBlock ( deindent `
$ { name } . prototype . _set = function _set ( newState ) {
$ { builders . _set }
} ;
Rich Harris
8 years ago
committed by
GitHub