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Field initializers and constructors

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This commit is contained in:
dcodeIO
2018-01-28 15:13:31 +01:00
parent b1e7b75ad7
commit 1b0ed61072
10 changed files with 516 additions and 162 deletions
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62
src/compiler.ts
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@ -2652,8 +2652,11 @@ export class Compiler extends DiagnosticEmitter {
return this.module.createUnreachable();
}
/** Compiles a call to a function. If an instance method, `this` is the first element in `argumentExpressions`. */
compileCall(functionInstance: Function, argumentExpressions: Expression[], reportNode: Node): ExpressionRef {
/**
* Compiles a call to a function. If an instance method, `this` is the first element in
* `argumentExpressions` or can be specified explicitly as the last argument.
*/
compileCall(functionInstance: Function, argumentExpressions: Expression[], reportNode: Node, thisArg: ExpressionRef = 0): ExpressionRef {
// validate and compile arguments
var parameters = functionInstance.parameters;
@ -2662,6 +2665,8 @@ export class Compiler extends DiagnosticEmitter {
var numParametersInclThis = functionInstance.instanceMethodOf != null ? numParameters + 1 : numParameters;
var numArgumentsInclThis = argumentExpressions.length;
var numArguments = functionInstance.instanceMethodOf != null ? numArgumentsInclThis - 1 : numArgumentsInclThis;
if (thisArg)
numArgumentsInclThis++;
if (numArgumentsInclThis > numParametersInclThis) { // too many arguments
this.error(DiagnosticCode.Expected_0_arguments_but_got_1, reportNode.range,
@ -2672,13 +2677,18 @@ export class Compiler extends DiagnosticEmitter {
}
var operands = new Array<ExpressionRef>(numParametersInclThis);
var operandIndex = 0;
if (functionInstance.instanceMethodOf)
operands[operandIndex++] = this.compileExpression(argumentExpressions[0], functionInstance.instanceMethodOf.type);
var argumentIndex = 0;
if (functionInstance.instanceMethodOf) {
if (thisArg)
operands[operandIndex++] = thisArg;
else
operands[operandIndex++] = this.compileExpression(argumentExpressions[argumentIndex++], functionInstance.instanceMethodOf.type);
}
for (; operandIndex < numParametersInclThis; ++operandIndex) {
// argument has been provided
if (numArgumentsInclThis > operandIndex) {
operands[operandIndex] = this.compileExpression(argumentExpressions[operandIndex], parameters[operandIndex + numParameters - numParametersInclThis].type);
operands[operandIndex] = this.compileExpression(argumentExpressions[argumentIndex++], parameters[operandIndex + numParameters - numParametersInclThis].type);
// argument has been omitted
} else {
@ -2866,7 +2876,6 @@ export class Compiler extends DiagnosticEmitter {
// case LiteralKind.OBJECT:
// case LiteralKind.REGEXP:
// case LiteralKind.STRING:
}
throw new Error("not implemented");
}
@ -2901,9 +2910,46 @@ export class Compiler extends DiagnosticEmitter {
var prototype = <ClassPrototype>resolved.element;
var instance = prototype.resolveInclTypeArguments(expression.typeArguments, null, expression); // reports
if (instance) {
// TODO: call constructor
var thisExpr = compileBuiltinAllocate(this, instance, expression);
var initializers = new Array<ExpressionRef>();
// use a temp local for 'this'
var tempLocal = this.currentFunction.getTempLocal(this.options.usizeType);
initializers.push(this.module.createSetLocal(tempLocal.index, thisExpr));
// apply field initializers
if (instance.members)
for (var member of instance.members.values()) {
if (member.kind == ElementKind.FIELD) {
var field = <Field>member;
var fieldDeclaration = field.prototype.declaration;
if (field.is(ElementFlags.CONSTANT)) {
assert(false); // there are no built-in fields currently
} else if (fieldDeclaration && fieldDeclaration.initializer) {
initializers.push(this.module.createStore(field.type.byteSize,
this.module.createGetLocal(tempLocal.index, this.options.nativeSizeType),
this.compileExpression(fieldDeclaration.initializer, field.type),
field.type.toNativeType(),
field.memoryOffset
));
}
}
}
// apply constructor
var constructorInstance = instance.constructorInstance;
if (constructorInstance)
initializers.push(this.compileCall(constructorInstance, expression.arguments, expression,
this.module.createGetLocal(tempLocal.index, this.options.nativeSizeType)
));
// return 'this'
initializers.push(this.module.createGetLocal(tempLocal.index, this.options.nativeSizeType));
this.currentFunction.freeTempLocal(tempLocal);
thisExpr = this.module.createBlock(null, initializers, this.options.nativeSizeType);
this.currentType = instance.type;
return compileBuiltinAllocate(this, instance, expression);
return thisExpr;
}
} else
this.error(DiagnosticCode.Cannot_use_new_with_an_expression_whose_type_lacks_a_construct_signature, expression.expression.range);