@platformos/pos-cli
Version:
Manage your platformOS application
121 lines (103 loc) • 3.17 kB
JavaScript
/**
* Copyright (c) 2019 GraphQL Contributors
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
import CodeMirror from 'codemirror';
import { list, t, onlineParser, opt, p } from 'graphql-language-service-parser';
/**
* This mode defines JSON, but provides a data-laden parser state to enable
* better code intelligence.
*/
CodeMirror.defineMode('graphql-variables', config => {
const parser = onlineParser({
eatWhitespace: stream => stream.eatSpace(),
lexRules: LexRules,
parseRules: ParseRules,
editorConfig: {
tabSize: config.tabSize
}
});
return {
config,
startState: parser.startState,
token: parser.token,
indent,
electricInput: /^\s*[}\]]/,
fold: 'brace',
closeBrackets: {
pairs: '[]{}""',
explode: '[]{}'
}
};
});
function indent(state, textAfter) {
const levels = state.levels; // If there is no stack of levels, use the current level.
// Otherwise, use the top level, pre-emptively dedenting for close braces.
const level = !levels || levels.length === 0 ? state.indentLevel : levels[levels.length - 1] - (this.electricInput.test(textAfter) ? 1 : 0);
return level * this.config.indentUnit;
}
/**
* The lexer rules. These are exactly as described by the spec.
*/
const LexRules = {
// All Punctuation used in JSON.
Punctuation: /^\[|]|\{|\}|:|,/,
// JSON Number.
Number: /^-?(?:0|(?:[1-9][0-9]*))(?:\.[0-9]*)?(?:[eE][+-]?[0-9]+)?/,
// JSON String.
String: /^"(?:[^"\\]|\\(?:"|\/|\\|b|f|n|r|t|u[0-9a-fA-F]{4}))*"?/,
// JSON literal keywords.
Keyword: /^true|false|null/
};
/**
* The parser rules for JSON.
*/
const ParseRules = {
Document: [p('{'), list('Variable', opt(p(','))), p('}')],
Variable: [namedKey('variable'), p(':'), 'Value'],
Value(token) {
switch (token.kind) {
case 'Number':
return 'NumberValue';
case 'String':
return 'StringValue';
case 'Punctuation':
switch (token.value) {
case '[':
return 'ListValue';
case '{':
return 'ObjectValue';
}
return null;
case 'Keyword':
switch (token.value) {
case 'true':
case 'false':
return 'BooleanValue';
case 'null':
return 'NullValue';
}
return null;
}
},
NumberValue: [t('Number', 'number')],
StringValue: [t('String', 'string')],
BooleanValue: [t('Keyword', 'builtin')],
NullValue: [t('Keyword', 'keyword')],
ListValue: [p('['), list('Value', opt(p(','))), p(']')],
ObjectValue: [p('{'), list('ObjectField', opt(p(','))), p('}')],
ObjectField: [namedKey('attribute'), p(':'), 'Value']
}; // A namedKey Token which will decorate the state with a `name`
function namedKey(style) {
return {
style,
match: token => token.kind === 'String',
update(state, token) {
state.name = token.value.slice(1, -1); // Remove quotes.
}
};
}