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refactor(ivy): make styling instructions use the new styling algorithm (#30742)

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This commit is the final patch of the ivy styling algorithm refactor.
This patch swaps functionality from the old styling mechanism to the
new refactored code by changing the instruction code the compiler
generates and by pointing the runtime instruction code to the new
styling algorithm.

PR Close #30742
This commit is contained in:
Matias Niemelä
2019-05-28 10:31:01 -07:00
committed by Kara Erickson
parent f14693b9a4
commit 9c954ebc62
57 changed files with 2287 additions and 2612 deletions
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15
packages/compiler/src/render3/view/compiler.ts
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@ -586,14 +586,8 @@ function createHostBindingsFunction(
hostBindingsMetadata: R3HostMetadata, typeSourceSpan: ParseSourceSpan,
bindingParser: BindingParser, constantPool: ConstantPool, selector: string,
name?: string): o.Expression|null {
// Initialize hostVarsCount to number of bound host properties (interpolations illegal),
// except 'style' and 'class' properties, since they should *not* allocate host var slots
const hostVarsCount = Object.keys(hostBindingsMetadata.properties)
.filter(name => {
const prefix = getStylingPrefix(name);
return prefix !== 'style' && prefix !== 'class';
})
.length;
// Initialize hostVarsCount to number of bound host properties (interpolations illegal)
const hostVarsCount = Object.keys(hostBindingsMetadata.properties).length;
const elVarExp = o.variable('elIndex');
const bindingContext = o.variable(CONTEXT_NAME);
const styleBuilder = new StylingBuilder(elVarExp, bindingContext);
@ -733,7 +727,10 @@ function createHostBindingsFunction(
// the update block of a component/directive templateFn/hostBindingsFn so that the bindings
// are evaluated and updated for the element.
styleBuilder.buildUpdateLevelInstructions(getValueConverter()).forEach(instruction => {
totalHostVarsCount += instruction.allocateBindingSlots;
// we subtract a value of `1` here because the binding slot was already
// allocated at the top of this method when all the input bindings were
// counted.
totalHostVarsCount += Math.max(instruction.allocateBindingSlots - 1, 0);
updateStatements.push(createStylingStmt(instruction, bindingContext, bindingFn));
});
}