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import * as _ from 'lodash';
import * as React from 'react';
import {DocsInfo} from 'ts/pages/documentation/docs_info';
import {Type} from 'ts/pages/documentation/type';
import {Parameter, SolidityMethod, TypeDefinitionByName, TypescriptMethod} from 'ts/types';
interface MethodSignatureProps {
method: TypescriptMethod|SolidityMethod;
sectionName: string;
shouldHideMethodName?: boolean;
shouldUseArrowSyntax?: boolean;
typeDefinitionByName?: TypeDefinitionByName;
docsInfo: DocsInfo;
}
const defaultProps = {
shouldHideMethodName: false,
shouldUseArrowSyntax: false,
};
export const MethodSignature: React.SFC<MethodSignatureProps> = (props: MethodSignatureProps) => {
const sectionName = 'types';
const parameters = renderParameters(
props.method, props.docsInfo, sectionName, props.typeDefinitionByName,
);
const paramString = _.reduce(parameters, (prev: React.ReactNode, curr: React.ReactNode) => {
return [prev, ', ', curr];
});
const methodName = props.shouldHideMethodName ? '' : props.method.name;
const typeParameterIfExists = _.isUndefined((props.method as TypescriptMethod).typeParameter) ?
undefined :
renderTypeParameter(
props.method, props.docsInfo, sectionName, props.typeDefinitionByName,
);
return (
<span>
{props.method.callPath}{methodName}{typeParameterIfExists}({paramString})
{props.shouldUseArrowSyntax ? ' => ' : ': '}
{' '}
{props.method.returnType &&
<Type
type={props.method.returnType}
sectionName={sectionName}
typeDefinitionByName={props.typeDefinitionByName}
docsInfo={props.docsInfo}
/>
}
</span>
);
};
MethodSignature.defaultProps = defaultProps;
function renderParameters(
method: TypescriptMethod|SolidityMethod, docsInfo: DocsInfo,
sectionName: string, typeDefinitionByName?: TypeDefinitionByName,
) {
const parameters = method.parameters;
const params = _.map(parameters, (p: Parameter) => {
const isOptional = p.isOptional;
const type = (
<Type
type={p.type}
sectionName={sectionName}
typeDefinitionByName={typeDefinitionByName}
docsInfo={docsInfo}
/>
);
return (
<span key={`param-${p.type}-${p.name}`}>
{p.name}{isOptional && '?'}: {type}
</span>
);
});
return params;
}
function renderTypeParameter(
method: TypescriptMethod, docsInfo: DocsInfo,
sectionName: string, typeDefinitionByName?: TypeDefinitionByName,
) {
const typeParameter = method.typeParameter;
const typeParam = (
<span>
{`<${typeParameter.name} extends `}
<Type
type={typeParameter.type}
sectionName={sectionName}
typeDefinitionByName={typeDefinitionByName}
docsInfo={docsInfo}
/>
{`>`}
</span>
);
return typeParam;
}
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