diff options
Diffstat (limited to 'tools/node_modules/eslint/node_modules/type-check/lib/parse-type.js')
-rw-r--r-- | tools/node_modules/eslint/node_modules/type-check/lib/parse-type.js | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/node_modules/type-check/lib/parse-type.js b/tools/node_modules/eslint/node_modules/type-check/lib/parse-type.js new file mode 100644 index 0000000000..5baf661fae --- /dev/null +++ b/tools/node_modules/eslint/node_modules/type-check/lib/parse-type.js @@ -0,0 +1,196 @@ +// Generated by LiveScript 1.4.0 +(function(){ + var identifierRegex, tokenRegex; + identifierRegex = /[\$\w]+/; + function peek(tokens){ + var token; + token = tokens[0]; + if (token == null) { + throw new Error('Unexpected end of input.'); + } + return token; + } + function consumeIdent(tokens){ + var token; + token = peek(tokens); + if (!identifierRegex.test(token)) { + throw new Error("Expected text, got '" + token + "' instead."); + } + return tokens.shift(); + } + function consumeOp(tokens, op){ + var token; + token = peek(tokens); + if (token !== op) { + throw new Error("Expected '" + op + "', got '" + token + "' instead."); + } + return tokens.shift(); + } + function maybeConsumeOp(tokens, op){ + var token; + token = tokens[0]; + if (token === op) { + return tokens.shift(); + } else { + return null; + } + } + function consumeArray(tokens){ + var types; + consumeOp(tokens, '['); + if (peek(tokens) === ']') { + throw new Error("Must specify type of Array - eg. [Type], got [] instead."); + } + types = consumeTypes(tokens); + consumeOp(tokens, ']'); + return { + structure: 'array', + of: types + }; + } + function consumeTuple(tokens){ + var components; + components = []; + consumeOp(tokens, '('); + if (peek(tokens) === ')') { + throw new Error("Tuple must be of at least length 1 - eg. (Type), got () instead."); + } + for (;;) { + components.push(consumeTypes(tokens)); + maybeConsumeOp(tokens, ','); + if (')' === peek(tokens)) { + break; + } + } + consumeOp(tokens, ')'); + return { + structure: 'tuple', + of: components + }; + } + function consumeFields(tokens){ + var fields, subset, ref$, key, types; + fields = {}; + consumeOp(tokens, '{'); + subset = false; + for (;;) { + if (maybeConsumeOp(tokens, '...')) { + subset = true; + break; + } + ref$ = consumeField(tokens), key = ref$[0], types = ref$[1]; + fields[key] = types; + maybeConsumeOp(tokens, ','); + if ('}' === peek(tokens)) { + break; + } + } + consumeOp(tokens, '}'); + return { + structure: 'fields', + of: fields, + subset: subset + }; + } + function consumeField(tokens){ + var key, types; + key = consumeIdent(tokens); + consumeOp(tokens, ':'); + types = consumeTypes(tokens); + return [key, types]; + } + function maybeConsumeStructure(tokens){ + switch (tokens[0]) { + case '[': + return consumeArray(tokens); + case '(': + return consumeTuple(tokens); + case '{': + return consumeFields(tokens); + } + } + function consumeType(tokens){ + var token, wildcard, type, structure; + token = peek(tokens); + wildcard = token === '*'; + if (wildcard || identifierRegex.test(token)) { + type = wildcard + ? consumeOp(tokens, '*') + : consumeIdent(tokens); + structure = maybeConsumeStructure(tokens); + if (structure) { + return structure.type = type, structure; + } else { + return { + type: type + }; + } + } else { + structure = maybeConsumeStructure(tokens); + if (!structure) { + throw new Error("Unexpected character: " + token); + } + return structure; + } + } + function consumeTypes(tokens){ + var lookahead, types, typesSoFar, typeObj, type; + if ('::' === peek(tokens)) { + throw new Error("No comment before comment separator '::' found."); + } + lookahead = tokens[1]; + if (lookahead != null && lookahead === '::') { + tokens.shift(); + tokens.shift(); + } + types = []; + typesSoFar = {}; + if ('Maybe' === peek(tokens)) { + tokens.shift(); + types = [ + { + type: 'Undefined' + }, { + type: 'Null' + } + ]; + typesSoFar = { + Undefined: true, + Null: true + }; + } + for (;;) { + typeObj = consumeType(tokens), type = typeObj.type; + if (!typesSoFar[type]) { + types.push(typeObj); + } + typesSoFar[type] = true; + if (!maybeConsumeOp(tokens, '|')) { + break; + } + } + return types; + } + tokenRegex = RegExp('\\.\\.\\.|::|->|' + identifierRegex.source + '|\\S', 'g'); + module.exports = function(input){ + var tokens, e; + if (!input.length) { + throw new Error('No type specified.'); + } + tokens = input.match(tokenRegex) || []; + if (in$('->', tokens)) { + throw new Error("Function types are not supported.\ To validate that something is a function, you may use 'Function'."); + } + try { + return consumeTypes(tokens); + } catch (e$) { + e = e$; + throw new Error(e.message + " - Remaining tokens: " + JSON.stringify(tokens) + " - Initial input: '" + input + "'"); + } + }; + function in$(x, xs){ + var i = -1, l = xs.length >>> 0; + while (++i < l) if (x === xs[i]) return true; + return false; + } +}).call(this); |