100 lines
3.1 KiB
Haxe
100 lines
3.1 KiB
Haxe
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/*
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* Copyright (C)2005-2019 Haxe Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package haxe.macro;
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import haxe.macro.Expr;
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/**
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This class provides some utility methods to work with strings in macro
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context.
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**/
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#if hl
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@:hlNative("macro")
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#end
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class MacroStringTools {
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#if (macro || display)
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/**
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Formats `String` `s` using the usual interpolation rules.
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The returned expression is a concatenation of string parts and escaped
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elements.
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**/
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static public function formatString(s:String, pos:Position):Expr {
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#if (neko || eval)
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return Context.load("format_string", 2)(s, pos);
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#end
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}
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/**
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Tells if `e` is a format string, i.e. uses single quotes `'` as
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delimiters.
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**/
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static public function isFormatExpr(e:ExprOf<String>):Bool {
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return e.expr.match(EConst(CString(_, SingleQuotes)));
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}
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#end
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/**
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Converts an array of Strings `sl` to a field expression.
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If `sl` has no elements, the result is null.
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If `sl` has one element, the result is `EConst(CIdent(sl[0])`.
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Otherwise the result is a chain of `EField` nodes.
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If `sl` is null, the result is unspecified.
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**/
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static public function toFieldExpr(sl:Array<String>, ?pos):Expr {
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if (pos == null)
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return Lambda.fold(sl, function(s, e) return e == null ? (macro $i{s}) : (macro $e.$s), null);
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var e = null;
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for (v in sl)
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if (e == null)
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e = {expr: EConst(CIdent(v)), pos: pos};
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else
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e = {expr: EField(e, v), pos: pos};
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return e;
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}
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/**
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Converts a path given by package `pack` and name `name` to a `String`
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separated by dots.
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If `pack` has no elements, the result is `name`.
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If `pack` is null, the result is unspecified.
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Otherwise the elements of `pack` are joined with a separating dot, with
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an appended dot separating the result from `name`.
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**/
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static public function toDotPath(pack:Array<String>, name:String):String {
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return if (pack.length == 0) name else pack.join(".") + "." + name;
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}
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static public function toComplex(path:String):ComplexType {
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var pack = path.split(".");
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return TPath({pack: pack, name: pack.pop(), params: []});
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}
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}
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