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dist/lib/css/syntax/parser.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parseFunctionArgs = exports.nonFunctionArgSeparator = exports.nonWhiteSpace = exports.isIdentWithValue = exports.isStringToken = exports.isIdentToken = exports.isNumberToken = exports.isDimensionToken = exports.Parser = void 0;
+var tokenizer_1 = require("./tokenizer");
+var Parser = /** @class */ (function () {
+    function Parser(tokens) {
+        this._tokens = tokens;
+    }
+    Parser.create = function (value) {
+        var tokenizer = new tokenizer_1.Tokenizer();
+        tokenizer.write(value);
+        return new Parser(tokenizer.read());
+    };
+    Parser.parseValue = function (value) {
+        return Parser.create(value).parseComponentValue();
+    };
+    Parser.parseValues = function (value) {
+        return Parser.create(value).parseComponentValues();
+    };
+    Parser.prototype.parseComponentValue = function () {
+        var token = this.consumeToken();
+        while (token.type === 31 /* WHITESPACE_TOKEN */) {
+            token = this.consumeToken();
+        }
+        if (token.type === 32 /* EOF_TOKEN */) {
+            throw new SyntaxError("Error parsing CSS component value, unexpected EOF");
+        }
+        this.reconsumeToken(token);
+        var value = this.consumeComponentValue();
+        do {
+            token = this.consumeToken();
+        } while (token.type === 31 /* WHITESPACE_TOKEN */);
+        if (token.type === 32 /* EOF_TOKEN */) {
+            return value;
+        }
+        throw new SyntaxError("Error parsing CSS component value, multiple values found when expecting only one");
+    };
+    Parser.prototype.parseComponentValues = function () {
+        var values = [];
+        while (true) {
+            var value = this.consumeComponentValue();
+            if (value.type === 32 /* EOF_TOKEN */) {
+                return values;
+            }
+            values.push(value);
+            values.push();
+        }
+    };
+    Parser.prototype.consumeComponentValue = function () {
+        var token = this.consumeToken();
+        switch (token.type) {
+            case 11 /* LEFT_CURLY_BRACKET_TOKEN */:
+            case 28 /* LEFT_SQUARE_BRACKET_TOKEN */:
+            case 2 /* LEFT_PARENTHESIS_TOKEN */:
+                return this.consumeSimpleBlock(token.type);
+            case 19 /* FUNCTION_TOKEN */:
+                return this.consumeFunction(token);
+        }
+        return token;
+    };
+    Parser.prototype.consumeSimpleBlock = function (type) {
+        var block = { type: type, values: [] };
+        var token = this.consumeToken();
+        while (true) {
+            if (token.type === 32 /* EOF_TOKEN */ || isEndingTokenFor(token, type)) {
+                return block;
+            }
+            this.reconsumeToken(token);
+            block.values.push(this.consumeComponentValue());
+            token = this.consumeToken();
+        }
+    };
+    Parser.prototype.consumeFunction = function (functionToken) {
+        var cssFunction = {
+            name: functionToken.value,
+            values: [],
+            type: 18 /* FUNCTION */
+        };
+        while (true) {
+            var token = this.consumeToken();
+            if (token.type === 32 /* EOF_TOKEN */ || token.type === 3 /* RIGHT_PARENTHESIS_TOKEN */) {
+                return cssFunction;
+            }
+            this.reconsumeToken(token);
+            cssFunction.values.push(this.consumeComponentValue());
+        }
+    };
+    Parser.prototype.consumeToken = function () {
+        var token = this._tokens.shift();
+        return typeof token === 'undefined' ? tokenizer_1.EOF_TOKEN : token;
+    };
+    Parser.prototype.reconsumeToken = function (token) {
+        this._tokens.unshift(token);
+    };
+    return Parser;
+}());
+exports.Parser = Parser;
+var isDimensionToken = function (token) { return token.type === 15 /* DIMENSION_TOKEN */; };
+exports.isDimensionToken = isDimensionToken;
+var isNumberToken = function (token) { return token.type === 17 /* NUMBER_TOKEN */; };
+exports.isNumberToken = isNumberToken;
+var isIdentToken = function (token) { return token.type === 20 /* IDENT_TOKEN */; };
+exports.isIdentToken = isIdentToken;
+var isStringToken = function (token) { return token.type === 0 /* STRING_TOKEN */; };
+exports.isStringToken = isStringToken;
+var isIdentWithValue = function (token, value) {
+    return exports.isIdentToken(token) && token.value === value;
+};
+exports.isIdentWithValue = isIdentWithValue;
+var nonWhiteSpace = function (token) { return token.type !== 31 /* WHITESPACE_TOKEN */; };
+exports.nonWhiteSpace = nonWhiteSpace;
+var nonFunctionArgSeparator = function (token) {
+    return token.type !== 31 /* WHITESPACE_TOKEN */ && token.type !== 4 /* COMMA_TOKEN */;
+};
+exports.nonFunctionArgSeparator = nonFunctionArgSeparator;
+var parseFunctionArgs = function (tokens) {
+    var args = [];
+    var arg = [];
+    tokens.forEach(function (token) {
+        if (token.type === 4 /* COMMA_TOKEN */) {
+            if (arg.length === 0) {
+                throw new Error("Error parsing function args, zero tokens for arg");
+            }
+            args.push(arg);
+            arg = [];
+            return;
+        }
+        if (token.type !== 31 /* WHITESPACE_TOKEN */) {
+            arg.push(token);
+        }
+    });
+    if (arg.length) {
+        args.push(arg);
+    }
+    return args;
+};
+exports.parseFunctionArgs = parseFunctionArgs;
+var isEndingTokenFor = function (token, type) {
+    if (type === 11 /* LEFT_CURLY_BRACKET_TOKEN */ && token.type === 12 /* RIGHT_CURLY_BRACKET_TOKEN */) {
+        return true;
+    }
+    if (type === 28 /* LEFT_SQUARE_BRACKET_TOKEN */ && token.type === 29 /* RIGHT_SQUARE_BRACKET_TOKEN */) {
+        return true;
+    }
+    return type === 2 /* LEFT_PARENTHESIS_TOKEN */ && token.type === 3 /* RIGHT_PARENTHESIS_TOKEN */;
+};
+//# sourceMappingURL=parser.js.map