Modules (181)

JSONUtils

Description

Dependencies

Functions

Private

_createContextInfo

token non-nullable Object
CodeMirror token
tokenType non-nullable number
Type of current token
offset non-nullable number
Offset in current token
keyName non-nullable String
Name of corresponding key
valueName String
Name of current value
parentKeyName String
Name of parent key name
isArray Boolean
Whether or not we are inside an array
exclusionList Array.<String>
An array of keys that have already been used in the context of an object
shouldReplace Boolean
Should we just replace the current token or also add colons/braces/brackets to it
Returns: !{token: Object,tokenType: number,offset: number,keyName: String,valueName: String,parentKeyName: String,isArray: Boolean,exclusionList: Array.<String>,shouldReplace: Boolean}
    function _createContextInfo(token, tokenType, offset, keyName, valueName, parentKeyName, isArray, exclusionList, shouldReplace) {
        return {
            token: token || null,
            tokenType: tokenType || null,
            offset: offset || 0,
            keyName: keyName || null,
            valueName: valueName || null,
            parentKeyName: parentKeyName || null,
            isArray: isArray || false,
            exclusionList: exclusionList || [],
            shouldReplace: shouldReplace || false
        };
    }
Private

_getExclusionList

editor non-nullable Editor
constPos non-nullable {line: number, ch: number}
Returns: Array.<String>
    function _getExclusionList(editor, constPos) {
        var ctxPrev, ctxNext, exclusionList = [], pos, braceParity;

        // Move back to find exclusions.
        pos = $.extend({}, constPos);
        braceParity = 1;
        ctxPrev = TokenUtils.getInitialContext(editor._codeMirror, pos);
        while (TokenUtils.moveSkippingWhitespace(TokenUtils.movePrevToken, ctxPrev)) {
            if (ctxPrev.token.type === null) {
                if (ctxPrev.token.string === "}") {
                    braceParity++;
                } else if (ctxPrev.token.string === "{") {
                    braceParity--;
                }
            }

            if (braceParity === 1 && ctxPrev.token.type === "string property") {
                exclusionList.push(stripQuotes(ctxPrev.token.string));
            } else if (braceParity === 0) {
                break;
            }
        }

        // Move forward and find exclusions.
        pos = $.extend({}, constPos);
        braceParity = 1;
        ctxNext = TokenUtils.getInitialContext(editor._codeMirror, pos);
        while (TokenUtils.moveSkippingWhitespace(TokenUtils.moveNextToken, ctxNext)) {
            if (ctxNext.token.type === null) {
                if (ctxNext.token.string === "{") {
                    braceParity++;
                } else if (ctxNext.token.string === "}") {
                    braceParity--;
                }
            }

            if (braceParity === 1 && ctxNext.token.type === "string property") {
                exclusionList.push(stripQuotes(ctxNext.token.string));
            } else if (braceParity === 0) {
                break;
            }
        }

        return exclusionList;
    }
Private

_getParentKeyName

ctx non-nullable {editor:!CodeMirror, pos:!{ch:number, line:number}, token:Object}
Returns: String
    function _getParentKeyName(ctx) {
        var parentKeyName, braceParity = 1, hasColon;

        // Move the context back to find the parent key.
        while (TokenUtils.moveSkippingWhitespace(TokenUtils.movePrevToken, ctx)) {
            if (ctx.token.type === null) {
                if (ctx.token.string === "}") {
                    braceParity++;
                } else if (ctx.token.string === "{") {
                    braceParity--;
                }
            }

            if (braceParity === 0) {
                while (TokenUtils.moveSkippingWhitespace(TokenUtils.movePrevToken, ctx)) {
                    if (ctx.token.type === null && ctx.token.string === ":") {
                        hasColon = true;
                    } else if (ctx.token.type === "string property") {
                        parentKeyName = stripQuotes(ctx.token.string);
                        break;
                    }
                }
                break;
            }
        }

        if (parentKeyName && hasColon) {
            return parentKeyName;
        }
        return null;
    }
Public API

getContextInfo

Returns context info at a given position in editor

editor non-nullable Editor
constPos non-nullable {line: number, ch: number}
Position of cursor in the editor
requireParent Boolean
If true will look for parent key name
requireNextToken Boolean
if true we can replace the next token of a value.
Returns: !{token: Object,tokenType: number,offset: number,keyName: String,valueName: String,parentKeyName: String,isArray: Boolean,exclusionList: Array.<String>,shouldReplace: Boolean}
    function getContextInfo(editor, constPos, requireParent, requireNextToken) {
        var pos, ctx, ctxPrev, ctxNext, offset, keyName, valueName, parentKeyName,
            isArray, exclusionList, hasColon, hasComma, hasBracket, shouldReplace;

        pos = $.extend({}, constPos);
        ctx = TokenUtils.getInitialContext(editor._codeMirror, pos);
        offset = TokenUtils.offsetInToken(ctx);

        if (ctx.token && ctx.token.type === "string property") {
            // String literals used as keys.

            // Disallow hints if cursor is out of the string.
            if (/^['"]$/.test(ctx.token.string.substr(-1, 1)) &&
                    ctx.token.string.length !== 1 && ctx.token.end === pos.ch) {
                return null;
            }
            keyName = stripQuotes(ctx.token.string);

            // Get parent key name.
            if (requireParent) {
                ctxPrev = $.extend(true, {}, ctx);
                parentKeyName = stripQuotes(_getParentKeyName(ctxPrev));
            }

            // Check if the key is followed by a colon, so we should not append colon again.
            ctxNext = $.extend(true, {}, ctx);
            TokenUtils.moveSkippingWhitespace(TokenUtils.moveNextToken, ctxNext);
            if (ctxNext.token.type === null && ctxNext.token.string === ":") {
                shouldReplace = true;
            }

            // Get an exclusion list of properties.
            pos = $.extend({}, constPos);
            exclusionList = _getExclusionList(editor, pos);

            return _createContextInfo(ctx.token, TOKEN_KEY, offset, keyName, valueName, parentKeyName, null, exclusionList, shouldReplace);
        } else if (ctx.token && (valueTokenTypes.indexOf(ctx.token.type) !== -1 ||
                                (ctx.token.type === null && regexAllowedChars.test(ctx.token.string)))) {
            // Boolean, String, Number and variable literal values.

            // Disallow hints if cursor is out of the string.
            if (ctx.token.type === "string" && /^['"]$/.test(ctx.token.string.substr(-1, 1)) &&
                    ctx.token.string.length !== 1 && ctx.token.end === pos.ch) {
                return null;
            }
            valueName = ctx.token.string;

            // Check the current token
            if (ctx.token.type === null) {
                if (ctx.token.string === ":") {
                    hasColon = true;
                } else if (ctx.token.string === ",") {
                    hasComma = true;
                } else if (ctx.token.string === "[") {
                    hasBracket = true;
                }
            }

            // move context back and find corresponding key name.
            ctxPrev = $.extend(true, {}, ctx);
            while (TokenUtils.moveSkippingWhitespace(TokenUtils.movePrevToken, ctxPrev)) {
                if (ctxPrev.token.type === "string property") {
                    keyName = stripQuotes(ctxPrev.token.string);
                    break;
                } else if (ctxPrev.token.type === null) {
                    if (ctxPrev.token.string === ":") {
                        hasColon = true;
                    } else if (ctxPrev.token.string === ",") {
                        hasComma = true;
                    } else if (ctxPrev.token.string === "[") {
                        hasBracket = true;
                    } else {
                        return null;
                    }
                } else if (!hasComma) {
                    return null;
                }
            }

            // If no key name or colon found OR
            // If we have a comma but no opening bracket, return null.
            if ((!keyName || !hasColon) || (hasComma && !hasBracket)) {
                return null;
            } else {
                isArray = hasBracket;
            }

            // Get parent key name.
            if (requireParent) {
                ctxPrev = $.extend(true, {}, ctx);
                parentKeyName = stripQuotes(_getParentKeyName(ctxPrev));
            }

            // Check if we can replace the next token of a value.
            ctxNext = $.extend(true, {}, ctx);
            TokenUtils.moveNextToken(ctxNext);
            if (requireNextToken && valueTokenTypes.indexOf(ctxNext.token.type) !== -1) {
                shouldReplace = true;
            }

            return _createContextInfo((shouldReplace) ? ctxNext.token : ctx.token, TOKEN_VALUE, offset, keyName, valueName, parentKeyName, isArray, null, shouldReplace);
        }

        return null;
    }

    // Expose public API.
    exports.TOKEN_KEY           = TOKEN_KEY;
    exports.TOKEN_VALUE         = TOKEN_VALUE;
    exports.regexAllowedChars   = regexAllowedChars;
    exports.getContextInfo      = getContextInfo;
    exports.stripQuotes         = stripQuotes;
});
Public API

stripQuotes

Removes the quotes around a string

string non-nullable String
Returns: String
    function stripQuotes(string) {
        if (string) {
            if (/^['"]$/.test(string.charAt(0))) {
                string = string.substr(1);
            }
            if (/^['"]$/.test(string.substr(-1, 1))) {
                string = string.substr(0, string.length - 1);
            }
        }
        return string;
    }