setup-python/node_modules/@babel/template/lib/parse.js
Danny McCormick 39c08a0eaa Initial pass
2019-06-26 21:12:00 -04:00

193 lines
4.8 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = parseAndBuildMetadata;
function t() {
const data = _interopRequireWildcard(require("@babel/types"));
t = function () {
return data;
};
return data;
}
function _parser() {
const data = require("@babel/parser");
_parser = function () {
return data;
};
return data;
}
function _codeFrame() {
const data = require("@babel/code-frame");
_codeFrame = function () {
return data;
};
return data;
}
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
const PATTERN = /^[_$A-Z0-9]+$/;
function parseAndBuildMetadata(formatter, code, opts) {
const ast = parseWithCodeFrame(code, opts.parser);
const {
placeholderWhitelist,
placeholderPattern,
preserveComments,
syntacticPlaceholders
} = opts;
t().removePropertiesDeep(ast, {
preserveComments
});
formatter.validate(ast);
const syntactic = {
placeholders: [],
placeholderNames: new Set()
};
const legacy = {
placeholders: [],
placeholderNames: new Set()
};
const isLegacyRef = {
value: undefined
};
t().traverse(ast, placeholderVisitorHandler, {
syntactic,
legacy,
isLegacyRef,
placeholderWhitelist,
placeholderPattern,
syntacticPlaceholders
});
return Object.assign({
ast
}, isLegacyRef.value ? legacy : syntactic);
}
function placeholderVisitorHandler(node, ancestors, state) {
let name;
if (t().isPlaceholder(node)) {
if (state.syntacticPlaceholders === false) {
throw new Error("%%foo%%-style placeholders can't be used when " + "'.syntacticPlaceholders' is false.");
} else {
name = node.name.name;
state.isLegacyRef.value = false;
}
} else if (state.isLegacyRef.value === false || state.syntacticPlaceholders) {
return;
} else if (t().isIdentifier(node) || t().isJSXIdentifier(node)) {
name = node.name;
state.isLegacyRef.value = true;
} else if (t().isStringLiteral(node)) {
name = node.value;
state.isLegacyRef.value = true;
} else {
return;
}
if (!state.isLegacyRef.value && (state.placeholderPattern != null || state.placeholderWhitelist != null)) {
throw new Error("'.placeholderWhitelist' and '.placeholderPattern' aren't compatible" + " with '.syntacticPlaceholders: true'");
}
if (state.isLegacyRef.value && (state.placeholderPattern === false || !(state.placeholderPattern || PATTERN).test(name)) && (!state.placeholderWhitelist || !state.placeholderWhitelist.has(name))) {
return;
}
ancestors = ancestors.slice();
const {
node: parent,
key
} = ancestors[ancestors.length - 1];
let type;
if (t().isStringLiteral(node) || t().isPlaceholder(node, {
expectedNode: "StringLiteral"
})) {
type = "string";
} else if (t().isNewExpression(parent) && key === "arguments" || t().isCallExpression(parent) && key === "arguments" || t().isFunction(parent) && key === "params") {
type = "param";
} else if (t().isExpressionStatement(parent) && !t().isPlaceholder(node)) {
type = "statement";
ancestors = ancestors.slice(0, -1);
} else if (t().isStatement(node) && t().isPlaceholder(node)) {
type = "statement";
} else {
type = "other";
}
const {
placeholders,
placeholderNames
} = state.isLegacyRef.value ? state.legacy : state.syntactic;
placeholders.push({
name,
type,
resolve: ast => resolveAncestors(ast, ancestors),
isDuplicate: placeholderNames.has(name)
});
placeholderNames.add(name);
}
function resolveAncestors(ast, ancestors) {
let parent = ast;
for (let i = 0; i < ancestors.length - 1; i++) {
const {
key,
index
} = ancestors[i];
if (index === undefined) {
parent = parent[key];
} else {
parent = parent[key][index];
}
}
const {
key,
index
} = ancestors[ancestors.length - 1];
return {
parent,
key,
index
};
}
function parseWithCodeFrame(code, parserOpts) {
parserOpts = Object.assign({
allowReturnOutsideFunction: true,
allowSuperOutsideMethod: true,
sourceType: "module"
}, parserOpts, {
plugins: (parserOpts.plugins || []).concat("placeholders")
});
try {
return (0, _parser().parse)(code, parserOpts);
} catch (err) {
const loc = err.loc;
if (loc) {
err.message += "\n" + (0, _codeFrame().codeFrameColumns)(code, {
start: loc
});
err.code = "BABEL_TEMPLATE_PARSE_ERROR";
}
throw err;
}
}