mframejs/dist/esm/binding/ast/addSymbols.js

simple framework

export function addSymbols(astInstance) {
    const ast = astInstance;
    ast.symbol('(literal)').nud = function () {
        return this;
    };
    ast.symbol('(variable)').nud = function () {
        return this;
    };
    ast.symbol('(function)').nud = function () {
        return this;
    };
    ast.symbol('(end)');
    ast.symbol('(name)');
    ast.symbol(':');
    ast.symbol(';');
    ast.symbol(')');
    ast.symbol(']');
    ast.symbol('}');
    ast.symbol(',');
    ast.infix('+', 50);
    ast.infix('-', 50);
    ast.infix('*', 60);
    ast.infix('%', 60);
    ast.infix('/', 60);
    ast.infix('===', 40);
    ast.infix('!==', 40);
    ast.infix('==', 40);
    ast.infix('!=', 40);
    ast.infix('<', 40);
    ast.infix('<=', 40);
    ast.infix('>', 40);
    ast.infix('^', 70);
    ast.infix('>=', 40);
    ast.infix('?', 20, function (left) {
        this.first = left;
        this.second = ast.expression(0);
        ast.advance(':');
        this.third = ast.expression(0);
        this.arity = 'ternary';
        return this;
    });
    ast.infix('.', 80, function (left) {
        this.first = left;
        if (ast.currentToken.arity !== 'variable') {
            ast.currentToken.error('Expected a property name.');
        }
        ast.currentToken.arity = 'variable';
        this.second = ast.currentToken;
        this.arity = 'binary';
        this.isObject = true;
        ast.advance();
        return this;
    });
    ast.infix('[', 80, function (left) {
        this.first = left;
        this.second = ast.expression(0);
        this.arity = 'binary';
        this.isObject = true;
        this.contextReset = true;
        ast.advance(']');
        return this;
    });
    ast.infix('(', 80, function (left) {
        if (!left) {
            return ast.expression(0);
        }
        const a = [];
        this.arity = 'binary';
        this.isFunction = true;
        this.first = left;
        this.second = a;
        if (ast.currentToken.id !== ')') {
            while (true) {
                a.push(ast.expression(0));
                if (ast.currentToken.id !== ',') {
                    break;
                }
                ast.advance(',');
            }
        }
        ast.advance(')');
        return this;
    });
    ast.prefix('-');
    ast.prefix('!');
    ast.prefix('(', function () {
        const e = ast.expression(0);
        if (ast.currentToken.value === '|') {
            ast.valueConverter = ast.expression(0);
        }
        if (ast.currentToken.value === '&') {
            ast.behavior = ast.expression(0);
        }
        else {
            ast.advance(')');
        }
        return e;
    });
    ast.prefix('{', function () {
        const a = [];
        if (ast.currentToken.value !== '}') {
            while (true) {
                const n = ast.currentToken;
                ast.advance();
                ast.advance(':');
                const v = ast.expression(0);
                v.key = n.value;
                a.push(v);
                if (ast.currentToken.value !== ',') {
                    break;
                }
                ast.advance(',');
            }
        }
        ast.advance('}');
        this.first = a;
        this.arity = 'unary';
        return this;
    });
    ast.assignment('=');
    ast.assignment('+=');
    ast.assignment('-=');
    ast.assignment('*=');
    ast.assignment('/=');
    ast.prefix('|', function () {
        this.arity = 'valueConverter';
        const value = ast.expression(0);
        this.value = value.value;
        const a = [];
        this.args = a;
        while (true) {
            if (ast.currentToken.id !== ':') {
                break;
            }
            ast.advance(',');
            a.push(ast.expression(0));
        }
        this.args.unshift(ast.statementsArray.pop());
        ast.currentStatement = this;
        return this;
    });
    ast.prefix('&', function () {
        this.arity = 'behavior';
        const value = ast.expression(0);
        this.value = value.value;
        const a = [];
        this.args = a;
        while (true) {
            if (ast.currentToken.id !== ':') {
                break;
            }
            ast.advance(',');
            a.push(ast.expression(0));
        }
        return this;
    });
    ast.prefix('${', function () {
        this.e = ast.expression(0);
        ast.advance('}');
        return this.e;
    });
    ast.prefix('@{', function () {
        const e = ast.expression(0);
        ast.advance('}');
        return e;
    });
    ast.infixr('&&', 30);
    ast.infixr('||', 30);
    ast.symbol(';').nud = function () {
        return null;
    };
}
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