js-ast-parser/dist/javasriptAstParserUtil.js

把javascript代码字符串解析为AST对象

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.assertExpectNullStatement = exports.assertUnexpect = exports.getLast = exports.getPriority = exports.isHexCharCode = exports.isOperator = exports.isNumberStart = exports.isNumberCharCode = exports.isIdentifierChar = exports.isIdentifierStart = void 0;
const constants_1 = require("./constants");
const patterns_1 = require("./patterns");
const UnExpectStatement_1 = require("./lib/statement/UnExpectStatement");
function isIdentifierStart(code) {
    if (code < 65)
        return code === 36;
    if (code < 91)
        return true;
    if (code < 97)
        return code === 95;
    if (code < 123)
        return true;
    return false;
}
exports.isIdentifierStart = isIdentifierStart;
function isIdentifierChar(code) {
    if (code < 48)
        return code === 36;
    if (code < 58)
        return true;
    if (code < 65)
        return false;
    if (code < 91)
        return true;
    if (code < 97)
        return code === 95;
    if (code < 123)
        return true;
    return false;
}
exports.isIdentifierChar = isIdentifierChar;
function isNumberCharCode(code) {
    return code >= 48 && code <= 57;
}
exports.isNumberCharCode = isNumberCharCode;
function isNumberStart(code) {
    return code >= 48 && code <= 57;
}
exports.isNumberStart = isNumberStart;
function isOperator(word) {
    return patterns_1.Patterns.operators.test(word);
}
exports.isOperator = isOperator;
function isHexCharCode(code) {
    return code >= 48 && code <= 57 || code >= 97 && code <= 122 || code >= 65 && code <= 90;
}
exports.isHexCharCode = isHexCharCode;
function getPriority(tokenOrLiteratureStatement) {
    if (typeof tokenOrLiteratureStatement === 'string') {
        return constants_1.priorityMap[tokenOrLiteratureStatement] || -1;
    }
    else {
        return -1;
    }
}
exports.getPriority = getPriority;
function getLast(arr) {
    return arr[arr.length - 1];
}
exports.getLast = getLast;
function assertUnexpect(parent, child, getUnexpectMsg) {
    if (child && child.type === 'UnExpectStatement') {
        parent.unexpectedNodes.push(child);
        return true;
    }
    let msg = getUnexpectMsg ? getUnexpectMsg(child) : null;
    if (msg) {
        parent.unexpectedNodes.push(new UnExpectStatement_1.UnExpectStatement(child, msg));
        return true;
    }
}
exports.assertUnexpect = assertUnexpect;
function assertExpectNullStatement(parent, child, expect) {
    if (child) {
        assertUnexpect(parent, child, () => {
            return `expect "${expect}"`;
        });
        return false;
    }
    return true;
}
exports.assertExpectNullStatement = assertExpectNullStatement;
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