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| 1 | +/** |
| 2 | + * Does semantic analysis for attributes. |
| 3 | + * |
| 4 | + * The term 'attribute' refers to things that can apply to a larger scope than a single declaration. |
| 5 | + * Among them are: |
| 6 | + * - Alignment (`align(8)`) |
| 7 | + * - User defined attributes (`@UDA`) |
| 8 | + * - Function Attributes (`@safe`) |
| 9 | + * - Storage classes (`static`, `__gshared`) |
| 10 | + * - Mixin declarations (`mixin("int x;")`) |
| 11 | + * - Conditional compilation (`static if`, `static foreach`) |
| 12 | + * - Linkage (`extern(C)`) |
| 13 | + * - Anonymous structs / unions |
| 14 | + * - Protection (`private`, `public`) |
| 15 | + * - Deprecated declarations (`@deprecated`) |
| 16 | + * |
| 17 | + * Copyright: Copyright (C) 1999-2024 by The D Language Foundation, All Rights Reserved |
| 18 | + * Authors: $(LINK2 https://www.digitalmars.com, Walter Bright) |
| 19 | + * License: $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0) |
| 20 | + * Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/attribsem.d, _attrib.d) |
| 21 | + * Documentation: https://dlang.org/phobos/dmd_attribsem.html |
| 22 | + * Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/attribsem.d |
| 23 | + */ |
| 24 | + |
| 25 | +module dmd.attribsem; |
| 26 | + |
| 27 | +import dmd.arraytypes; |
| 28 | +import dmd.attrib; |
| 29 | +import dmd.dscope; |
| 30 | +import dmd.dsymbol; |
| 31 | +import dmd.expression; |
| 32 | +import dmd.expressionsem; |
| 33 | +import dmd.location; |
| 34 | +import dmd.root.array; // for each |
| 35 | + |
| 36 | + |
| 37 | +Expressions* getAttributes(UserAttributeDeclaration a) |
| 38 | +{ |
| 39 | + if (auto sc = a._scope) |
| 40 | + { |
| 41 | + a._scope = null; |
| 42 | + arrayExpressionSemantic(a.atts.peekSlice(), sc); |
| 43 | + } |
| 44 | + auto exps = new Expressions(); |
| 45 | + if (a.userAttribDecl && a.userAttribDecl !is a) |
| 46 | + exps.push(new TupleExp(Loc.initial, a.userAttribDecl.getAttributes())); |
| 47 | + if (a.atts && a.atts.length) |
| 48 | + exps.push(new TupleExp(Loc.initial, a.atts)); |
| 49 | + return exps; |
| 50 | +} |
| 51 | + |
| 52 | +/** |
| 53 | + * Iterates the UDAs attached to the given symbol. |
| 54 | + * |
| 55 | + * Params: |
| 56 | + * sym = the symbol to get the UDAs from |
| 57 | + * sc = scope to use for semantic analysis of UDAs |
| 58 | + * dg = called once for each UDA |
| 59 | + * |
| 60 | + * Returns: |
| 61 | + * If `dg` returns `!= 0`, stops the iteration and returns that value. |
| 62 | + * Otherwise, returns 0. |
| 63 | + */ |
| 64 | +int foreachUda(Dsymbol sym, Scope* sc, int delegate(Expression) dg) |
| 65 | +{ |
| 66 | + if (!sym.userAttribDecl) |
| 67 | + return 0; |
| 68 | + |
| 69 | + auto udas = sym.userAttribDecl.getAttributes(); |
| 70 | + arrayExpressionSemantic(udas.peekSlice(), sc, true); |
| 71 | + |
| 72 | + return udas.each!((uda) { |
| 73 | + if (!uda.isTupleExp()) |
| 74 | + return 0; |
| 75 | + |
| 76 | + auto exps = uda.isTupleExp().exps; |
| 77 | + |
| 78 | + return exps.each!((e) { |
| 79 | + assert(e); |
| 80 | + |
| 81 | + if (auto result = dg(e)) |
| 82 | + return result; |
| 83 | + |
| 84 | + return 0; |
| 85 | + }); |
| 86 | + }); |
| 87 | +} |
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