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https://github.com/dlang/phobos.git
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3649 lines
103 KiB
D
3649 lines
103 KiB
D
// Written in the D programming language.
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/*
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Copyright: Copyright The D Language Foundation 2000-2013.
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License: $(HTTP boost.org/LICENSE_1_0.txt, Boost License 1.0).
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Authors: $(HTTP walterbright.com, Walter Bright), $(HTTP erdani.com,
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Andrei Alexandrescu), and Kenji Hara
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Source: $(PHOBOSSRC std/format/internal/write.d)
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*/
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module std.format.internal.write;
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import std.format.spec : FormatSpec;
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import std.range.primitives : isInputRange;
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import std.traits;
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version (StdUnittest)
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{
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import std.exception : assertCTFEable;
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import std.format : format;
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}
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package(std.format):
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/*
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`bool`s are formatted as `"true"` or `"false"` with `%s` and as `1` or
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`0` with integral-specific format specs.
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*/
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void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
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if (is(BooleanTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
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{
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BooleanTypeOf!T val = obj;
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if (f.spec == 's')
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writeAligned(w, val ? "true" : "false", f);
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else
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formatValueImpl(w, cast(byte) val, f);
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}
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@safe pure unittest
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{
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assertCTFEable!(
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{
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formatTest(false, "false");
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formatTest(true, "true");
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});
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}
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@system unittest
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{
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class C1
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{
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bool val;
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alias val this;
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this(bool v){ val = v; }
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}
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class C2 {
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bool val;
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alias val this;
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this(bool v){ val = v; }
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override string toString() const { return "C"; }
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}
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formatTest(new C1(false), "false");
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formatTest(new C1(true), "true");
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formatTest(new C2(false), "C");
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formatTest(new C2(true), "C");
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struct S1
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{
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bool val;
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alias val this;
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}
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struct S2
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{
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bool val;
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alias val this;
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string toString() const { return "S"; }
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}
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formatTest(S1(false), "false");
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formatTest(S1(true), "true");
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formatTest(S2(false), "S");
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formatTest(S2(true), "S");
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}
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@safe pure unittest
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{
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string t1 = format("[%6s] [%6s] [%-6s]", true, false, true);
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assert(t1 == "[ true] [ false] [true ]");
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string t2 = format("[%3s] [%-2s]", true, false);
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assert(t2 == "[true] [false]");
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}
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// https://issues.dlang.org/show_bug.cgi?id=20534
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@safe pure unittest
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{
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assert(format("%r",false) == "\0");
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}
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@safe pure unittest
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{
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assert(format("%07s",true) == " true");
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}
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@safe pure unittest
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{
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assert(format("%=8s",true) == " true ");
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assert(format("%=9s",false) == " false ");
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assert(format("%=9s",true) == " true ");
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assert(format("%-=9s",true) == " true ");
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assert(format("%=10s",false) == " false ");
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assert(format("%-=10s",false) == " false ");
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}
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/*
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`null` literal is formatted as `"null"`
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*/
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void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
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if (is(immutable T == immutable typeof(null)) && !is(T == enum) && !hasToString!(T, Char))
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{
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import std.format : enforceFmt;
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const spec = f.spec;
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enforceFmt(spec == 's', "null literal cannot match %" ~ spec);
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writeAligned(w, "null", f);
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}
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@safe pure unittest
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{
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import std.exception : collectExceptionMsg;
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import std.format : FormatException;
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import std.range.primitives : back;
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assert(collectExceptionMsg!FormatException(format("%p", null)).back == 'p');
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assertCTFEable!(
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{
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formatTest(null, "null");
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});
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}
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@safe pure unittest
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{
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string t = format("[%6s] [%-6s]", null, null);
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assert(t == "[ null] [null ]");
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}
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/*
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Integrals are formatted like $(REF printf, core, stdc, stdio).
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*/
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void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
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if (is(IntegralTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
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{
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import std.range.primitives : put;
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alias U = IntegralTypeOf!T;
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U val = obj; // Extracting alias this may be impure/system/may-throw
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if (f.spec == 'r')
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{
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// raw write, skip all else and write the thing
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auto raw = (ref val) @trusted {
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return (cast(const char*) &val)[0 .. val.sizeof];
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}(val);
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if (needToSwapEndianess(f))
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{
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foreach_reverse (c; raw)
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put(w, c);
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}
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else
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{
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foreach (c; raw)
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put(w, c);
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}
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return;
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}
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immutable uint base =
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f.spec == 'x' || f.spec == 'X' ? 16 :
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f.spec == 'o' ? 8 :
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f.spec == 'b' ? 2 :
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f.spec == 's' || f.spec == 'd' || f.spec == 'u' ? 10 :
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0;
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import std.format : enforceFmt;
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enforceFmt(base > 0,
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"incompatible format character for integral argument: %" ~ f.spec);
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import std.math.algebraic : abs;
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bool negative = false;
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ulong arg = val;
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static if (isSigned!U)
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{
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if (f.spec == 's' || f.spec == 'd')
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{
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if (val < 0)
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{
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negative = true;
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arg = cast(ulong) abs(val);
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}
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}
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}
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arg &= Unsigned!U.max;
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char[64] digits = void;
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size_t pos = digits.length - 1;
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do
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{
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digits[pos--] = '0' + arg % base;
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if (base > 10 && digits[pos + 1] > '9')
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digits[pos + 1] += (f.spec == 'x' ? 'a' : 'A') - '0' - 10;
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arg /= base;
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} while (arg > 0);
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char[3] prefix = void;
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size_t left = 2;
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size_t right = 2;
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if (negative)
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prefix[right++] = '-';
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else if (f.spec == 's' || f.spec == 'd')
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{
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if (f.flPlus)
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prefix[right++] = '+';
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else if (f.flSpace)
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prefix[right++] = ' ';
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}
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if (f.flHash && (base == 16) && obj != 0)
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{
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prefix[--left] = f.spec;
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prefix[--left] = '0';
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}
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if (f.flHash && (base == 8) && obj != 0
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&& (digits.length - (pos + 1) >= f.precision || f.precision == f.UNSPECIFIED))
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prefix[--left] = '0';
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writeAligned(w, prefix[left .. right], digits[pos + 1 .. $], "", f, true);
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}
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// https://issues.dlang.org/show_bug.cgi?id=18838
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@safe pure unittest
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{
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assert("%12,d".format(0) == " 0");
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}
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@safe pure unittest
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{
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import std.exception : collectExceptionMsg;
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import std.format : FormatException;
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import std.range.primitives : back;
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assert(collectExceptionMsg!FormatException(format("%c", 5)).back == 'c');
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assertCTFEable!(
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{
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formatTest(9, "9");
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formatTest(10, "10");
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});
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}
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@system unittest
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{
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class C1
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{
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long val;
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alias val this;
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this(long v){ val = v; }
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}
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class C2
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{
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long val;
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alias val this;
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this(long v){ val = v; }
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override string toString() const { return "C"; }
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}
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formatTest(new C1(10), "10");
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formatTest(new C2(10), "C");
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struct S1
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{
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long val;
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alias val this;
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}
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struct S2
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{
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long val;
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alias val this;
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string toString() const { return "S"; }
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}
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formatTest(S1(10), "10");
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formatTest(S2(10), "S");
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}
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// https://issues.dlang.org/show_bug.cgi?id=20064
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@safe unittest
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{
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assert(format( "%03,d", 1234) == "1,234");
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assert(format( "%04,d", 1234) == "1,234");
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assert(format( "%05,d", 1234) == "1,234");
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assert(format( "%06,d", 1234) == "01,234");
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assert(format( "%07,d", 1234) == "001,234");
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assert(format( "%08,d", 1234) == "0,001,234");
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assert(format( "%09,d", 1234) == "0,001,234");
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assert(format("%010,d", 1234) == "00,001,234");
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assert(format("%011,d", 1234) == "000,001,234");
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assert(format("%012,d", 1234) == "0,000,001,234");
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assert(format("%013,d", 1234) == "0,000,001,234");
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assert(format("%014,d", 1234) == "00,000,001,234");
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assert(format("%015,d", 1234) == "000,000,001,234");
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assert(format("%016,d", 1234) == "0,000,000,001,234");
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assert(format("%017,d", 1234) == "0,000,000,001,234");
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assert(format( "%03,d", -1234) == "-1,234");
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assert(format( "%04,d", -1234) == "-1,234");
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assert(format( "%05,d", -1234) == "-1,234");
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assert(format( "%06,d", -1234) == "-1,234");
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assert(format( "%07,d", -1234) == "-01,234");
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assert(format( "%08,d", -1234) == "-001,234");
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assert(format( "%09,d", -1234) == "-0,001,234");
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assert(format("%010,d", -1234) == "-0,001,234");
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assert(format("%011,d", -1234) == "-00,001,234");
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assert(format("%012,d", -1234) == "-000,001,234");
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assert(format("%013,d", -1234) == "-0,000,001,234");
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assert(format("%014,d", -1234) == "-0,000,001,234");
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assert(format("%015,d", -1234) == "-00,000,001,234");
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assert(format("%016,d", -1234) == "-000,000,001,234");
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assert(format("%017,d", -1234) == "-0,000,000,001,234");
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}
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@safe pure unittest
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{
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string t1 = format("[%6s] [%-6s]", 123, 123);
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assert(t1 == "[ 123] [123 ]");
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string t2 = format("[%6s] [%-6s]", -123, -123);
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assert(t2 == "[ -123] [-123 ]");
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}
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@safe pure unittest
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{
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formatTest(byte.min, "-128");
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formatTest(short.min, "-32768");
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formatTest(int.min, "-2147483648");
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formatTest(long.min, "-9223372036854775808");
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}
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// https://issues.dlang.org/show_bug.cgi?id=21777
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@safe pure unittest
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{
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assert(format!"%20.5,d"(cast(short) 120) == " 00,120");
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assert(format!"%20.5,o"(cast(short) 120) == " 00,170");
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assert(format!"%20.5,x"(cast(short) 120) == " 00,078");
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assert(format!"%20.5,2d"(cast(short) 120) == " 0,01,20");
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assert(format!"%20.5,2o"(cast(short) 120) == " 0,01,70");
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assert(format!"%20.5,4d"(cast(short) 120) == " 0,0120");
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assert(format!"%20.5,4o"(cast(short) 120) == " 0,0170");
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assert(format!"%20.5,4x"(cast(short) 120) == " 0,0078");
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assert(format!"%20.5,2x"(3000) == " 0,0b,b8");
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assert(format!"%20.5,4d"(3000) == " 0,3000");
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assert(format!"%20.5,4o"(3000) == " 0,5670");
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assert(format!"%20.5,4x"(3000) == " 0,0bb8");
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assert(format!"%20.5,d"(-400) == " -00,400");
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assert(format!"%20.30d"(-400) == "-000000000000000000000000000400");
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assert(format!"%20.5,4d"(0) == " 0,0000");
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assert(format!"%0#.8,2s"(12345) == "00,01,23,45");
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assert(format!"%0#.9,3x"(55) == "0x000,000,037");
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}
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// https://issues.dlang.org/show_bug.cgi?id=21814
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@safe pure unittest
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{
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assert(format("%,0d",1000) == "1000");
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}
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// https://issues.dlang.org/show_bug.cgi?id=21817
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@safe pure unittest
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{
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assert(format!"%u"(-5) == "4294967291");
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}
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// https://issues.dlang.org/show_bug.cgi?id=21820
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@safe pure unittest
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{
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assert(format!"%#.0o"(0) == "0");
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}
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/*
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Floating-point values are formatted like $(REF printf, core, stdc, stdio)
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*/
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void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
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if (is(FloatingPointTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
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{
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import std.algorithm.comparison : min;
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import std.algorithm.searching : find;
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import std.ascii : isUpper;
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import std.format : enforceFmt;
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import std.math.traits : isInfinity, isNaN, signbit;
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import std.range.primitives : put;
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import std.string : indexOf, indexOfAny;
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string nanInfStr(scope const ref FormatSpec!Char f, const bool nan,
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const bool inf, const int sb, const bool up) @safe pure nothrow
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{
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return nan
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? up
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? sb ? "-NAN" : f.flPlus ? "+NAN" : (f.flSpace ? " NAN" : "NAN")
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: sb ? "-nan" : f.flPlus ? "+nan" : (f.flSpace ? " nan" : "nan")
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: inf
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? up
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? sb ? "-INF" : f.flPlus ? "+INF" : (f.flSpace ? " INF" : "INF")
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: sb ? "-inf" : f.flPlus ? "+inf" : (f.flSpace ? " inf" : "inf")
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: "";
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}
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FloatingPointTypeOf!T val = obj;
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const char spec = f.spec;
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if (spec == 'r')
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{
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// raw write, skip all else and write the thing
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auto raw = (ref val) @trusted {
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return (cast(const char*) &val)[0 .. val.sizeof];
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}(val);
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if (needToSwapEndianess(f))
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{
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foreach_reverse (c; raw)
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put(w, c);
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}
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else
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{
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foreach (c; raw)
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put(w, c);
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}
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return;
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}
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enforceFmt(find("fgFGaAeEs", spec).length,
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"incompatible format character for floating point argument: %" ~ spec);
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FormatSpec!Char fs = f; // fs is copy for change its values.
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const spec2 = spec == 's' ? 'g' : spec;
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version (CRuntime_Microsoft)
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{
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// convert early to get "inf" in case of overflow
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// windows handels inf and nan strange
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// https://devblogs.microsoft.com/oldnewthing/20130228-01/?p=5103
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immutable double tval = val;
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}
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else
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{
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alias tval = val;
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}
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const nan = isNaN(tval);
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const inf = isInfinity(tval);
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char[512] buf2 = void;
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size_t len;
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char[] buf;
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static if (is(T == float) || is(T == double)
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|| (is(T == real) && (T.mant_dig == double.mant_dig || T.mant_dig == 64)))
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{
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import std.format.internal.floats : RoundingMode, printFloat;
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import std.math.hardware; // cannot be selective, because FloatingPointControl might not be defined
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auto mode = RoundingMode.toNearestTiesToEven;
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if (!__ctfe)
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{
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// std.math's FloatingPointControl isn't available on all target platforms
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static if (is(FloatingPointControl))
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{
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switch (FloatingPointControl.rounding)
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{
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case FloatingPointControl.roundUp:
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mode = RoundingMode.up;
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break;
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case FloatingPointControl.roundDown:
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mode = RoundingMode.down;
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break;
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case FloatingPointControl.roundToZero:
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mode = RoundingMode.toZero;
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break;
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case FloatingPointControl.roundToNearest:
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mode = RoundingMode.toNearestTiesToEven;
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break;
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default: assert(false, "Unknown floating point rounding mode");
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}
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}
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}
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fs.spec = spec2;
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printFloat(w, val, fs, mode);
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}
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else
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{
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if (nan || inf)
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{
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const sb = signbit(tval);
|
|
const up = isUpper(spec);
|
|
string ns = nanInfStr(f, nan, inf, sb, up);
|
|
FormatSpec!Char co;
|
|
co.spec = 's';
|
|
co.width = f.width;
|
|
co.flDash = f.flDash;
|
|
import std.format : formatValue;
|
|
formatValue(w, ns, co);
|
|
return;
|
|
}
|
|
|
|
enforceFmt(!__ctfe, mixin("\"Unsupported `real` type: real.sizeof = ", real.sizeof,
|
|
" | real.mant_dig = ", real.mant_dig, "\""));
|
|
|
|
char[1 /*%*/ + 5 /*flags*/ + 3 /*width.prec*/ + 2 /*format*/
|
|
+ 1 /*\0*/] sprintfSpec = void;
|
|
sprintfSpec[0] = '%';
|
|
uint i = 1;
|
|
if (fs.flDash) sprintfSpec[i++] = '-';
|
|
if (fs.flPlus) sprintfSpec[i++] = '+';
|
|
if (fs.flZero) sprintfSpec[i++] = '0';
|
|
if (fs.flSpace) sprintfSpec[i++] = ' ';
|
|
if (fs.flHash) sprintfSpec[i++] = '#';
|
|
sprintfSpec[i .. i + 3] = "*.*";
|
|
i += 3;
|
|
if (is(immutable typeof(val) == immutable real)) sprintfSpec[i++] = 'L';
|
|
sprintfSpec[i++] = spec2;
|
|
sprintfSpec[i] = 0;
|
|
//printf("format: '%s'; geeba: %g\n", sprintfSpec.ptr, val);
|
|
|
|
//writefln("'%s'", sprintfSpec[0 .. i]);
|
|
|
|
immutable n = () @trusted {
|
|
import core.stdc.stdio : snprintf;
|
|
return snprintf(buf2.ptr, buf2.length,
|
|
sprintfSpec.ptr,
|
|
fs.width,
|
|
// negative precision is same as no precision specified
|
|
fs.precision == fs.UNSPECIFIED ? -1 : fs.precision,
|
|
tval);
|
|
}();
|
|
|
|
enforceFmt(n >= 0, "floating point formatting failure");
|
|
|
|
len = min(n, buf2.length-1);
|
|
buf = buf2;
|
|
|
|
if (fs.flSeparator && !inf && !nan)
|
|
{
|
|
ptrdiff_t indexOfRemovable()
|
|
{
|
|
if (len < 2)
|
|
return -1;
|
|
|
|
size_t start = (buf[0 .. 1].indexOfAny(" 0123456789") == -1) ? 1 : 0;
|
|
if (len < 2 + start)
|
|
return -1;
|
|
if ((buf[start] == ' ') || (buf[start] == '0' && buf[start + 1] != '.'))
|
|
return start;
|
|
|
|
return -1;
|
|
}
|
|
|
|
ptrdiff_t dot, firstDigit, ePos, dotIdx, firstLen;
|
|
size_t separatorScoreCnt;
|
|
|
|
while (true)
|
|
{
|
|
dot = buf[0 .. len].indexOf('.');
|
|
firstDigit = buf[0 .. len].indexOfAny("0123456789");
|
|
ePos = buf[0 .. len].indexOf('e');
|
|
dotIdx = dot == -1 ? ePos == -1 ? len : ePos : dot;
|
|
|
|
firstLen = dotIdx - firstDigit;
|
|
separatorScoreCnt = (firstLen > 0) ? (firstLen - 1) / fs.separators : 0;
|
|
|
|
ptrdiff_t removableIdx = (len + separatorScoreCnt > fs.width) ? indexOfRemovable() : -1;
|
|
if ((removableIdx != -1) &&
|
|
((firstLen - (buf[removableIdx] == '0' ? 2 : 1)) / fs.separators + len - 1 >= fs.width))
|
|
{
|
|
buf[removableIdx .. $ - 1] = buf.dup[removableIdx + 1 .. $];
|
|
len--;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
|
|
immutable afterDotIdx = (ePos != -1) ? ePos : len;
|
|
|
|
// plus, minus, prefix
|
|
if (firstDigit > 0)
|
|
{
|
|
put(w, buf[0 .. firstDigit]);
|
|
}
|
|
|
|
// digits until dot with separator
|
|
for (auto j = 0; j < firstLen; ++j)
|
|
{
|
|
if (j > 0 && (firstLen - j) % fs.separators == 0)
|
|
{
|
|
put(w, fs.separatorChar);
|
|
}
|
|
put(w, buf[j + firstDigit]);
|
|
}
|
|
|
|
// print dot for decimal numbers only or with '#' format specifier
|
|
if (dot != -1 || fs.flHash)
|
|
{
|
|
put(w, '.');
|
|
}
|
|
|
|
// digits after dot
|
|
for (auto j = dotIdx + 1; j < afterDotIdx; ++j)
|
|
{
|
|
put(w, buf[j]);
|
|
}
|
|
|
|
// rest
|
|
if (ePos != -1)
|
|
{
|
|
put(w, buf[afterDotIdx .. len]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
put(w, buf[0 .. len]);
|
|
}
|
|
}
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
assert(format("%.1f", 1337.7) == "1337.7");
|
|
assert(format("%,3.2f", 1331.982) == "1,331.98");
|
|
assert(format("%,3.0f", 1303.1982) == "1,303");
|
|
assert(format("%#,3.4f", 1303.1982) == "1,303.1982");
|
|
assert(format("%#,3.0f", 1303.1982) == "1,303.");
|
|
}
|
|
|
|
@safe /*pure*/ unittest // formatting floating point values is now impure
|
|
{
|
|
import std.conv : to;
|
|
import std.exception : collectExceptionMsg;
|
|
import std.format : FormatException;
|
|
import std.meta : AliasSeq;
|
|
import std.range.primitives : back;
|
|
|
|
assert(collectExceptionMsg!FormatException(format("%d", 5.1)).back == 'd');
|
|
|
|
static foreach (T; AliasSeq!(float, double, real))
|
|
{
|
|
formatTest(to!( T)(5.5), "5.5");
|
|
formatTest(to!( const T)(5.5), "5.5");
|
|
formatTest(to!(immutable T)(5.5), "5.5");
|
|
|
|
formatTest(T.nan, "nan");
|
|
}
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
formatTest(2.25, "2.25");
|
|
|
|
class C1
|
|
{
|
|
double val;
|
|
alias val this;
|
|
this(double v){ val = v; }
|
|
}
|
|
|
|
class C2
|
|
{
|
|
double val;
|
|
alias val this;
|
|
this(double v){ val = v; }
|
|
override string toString() const { return "C"; }
|
|
}
|
|
|
|
formatTest(new C1(2.25), "2.25");
|
|
formatTest(new C2(2.25), "C");
|
|
|
|
struct S1
|
|
{
|
|
double val;
|
|
alias val this;
|
|
}
|
|
struct S2
|
|
{
|
|
double val;
|
|
alias val this;
|
|
string toString() const { return "S"; }
|
|
}
|
|
|
|
formatTest(S1(2.25), "2.25");
|
|
formatTest(S2(2.25), "S");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=19939
|
|
@safe unittest
|
|
{
|
|
assert(format("^%13,3.2f$", 1.00) == "^ 1.00$");
|
|
assert(format("^%13,3.2f$", 10.00) == "^ 10.00$");
|
|
assert(format("^%13,3.2f$", 100.00) == "^ 100.00$");
|
|
assert(format("^%13,3.2f$", 1_000.00) == "^ 1,000.00$");
|
|
assert(format("^%13,3.2f$", 10_000.00) == "^ 10,000.00$");
|
|
assert(format("^%13,3.2f$", 100_000.00) == "^ 100,000.00$");
|
|
assert(format("^%13,3.2f$", 1_000_000.00) == "^ 1,000,000.00$");
|
|
assert(format("^%13,3.2f$", 10_000_000.00) == "^10,000,000.00$");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=20069
|
|
@safe unittest
|
|
{
|
|
assert(format("%012,f", -1234.0) == "-1,234.000000");
|
|
assert(format("%013,f", -1234.0) == "-1,234.000000");
|
|
assert(format("%014,f", -1234.0) == "-01,234.000000");
|
|
assert(format("%011,f", 1234.0) == "1,234.000000");
|
|
assert(format("%012,f", 1234.0) == "1,234.000000");
|
|
assert(format("%013,f", 1234.0) == "01,234.000000");
|
|
assert(format("%014,f", 1234.0) == "001,234.000000");
|
|
assert(format("%015,f", 1234.0) == "0,001,234.000000");
|
|
assert(format("%016,f", 1234.0) == "0,001,234.000000");
|
|
|
|
assert(format( "%08,.2f", -1234.0) == "-1,234.00");
|
|
assert(format( "%09,.2f", -1234.0) == "-1,234.00");
|
|
assert(format("%010,.2f", -1234.0) == "-01,234.00");
|
|
assert(format("%011,.2f", -1234.0) == "-001,234.00");
|
|
assert(format("%012,.2f", -1234.0) == "-0,001,234.00");
|
|
assert(format("%013,.2f", -1234.0) == "-0,001,234.00");
|
|
assert(format("%014,.2f", -1234.0) == "-00,001,234.00");
|
|
assert(format( "%08,.2f", 1234.0) == "1,234.00");
|
|
assert(format( "%09,.2f", 1234.0) == "01,234.00");
|
|
assert(format("%010,.2f", 1234.0) == "001,234.00");
|
|
assert(format("%011,.2f", 1234.0) == "0,001,234.00");
|
|
assert(format("%012,.2f", 1234.0) == "0,001,234.00");
|
|
assert(format("%013,.2f", 1234.0) == "00,001,234.00");
|
|
assert(format("%014,.2f", 1234.0) == "000,001,234.00");
|
|
assert(format("%015,.2f", 1234.0) == "0,000,001,234.00");
|
|
assert(format("%016,.2f", 1234.0) == "0,000,001,234.00");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.math.hardware; // cannot be selective, because FloatingPointControl might not be defined
|
|
|
|
// std.math's FloatingPointControl isn't available on all target platforms
|
|
static if (is(FloatingPointControl))
|
|
{
|
|
assert(FloatingPointControl.rounding == FloatingPointControl.roundToNearest);
|
|
}
|
|
|
|
// issue 20320
|
|
real a = 0.16;
|
|
real b = 0.016;
|
|
assert(format("%.1f", a) == "0.2");
|
|
assert(format("%.2f", b) == "0.02");
|
|
|
|
double a1 = 0.16;
|
|
double b1 = 0.016;
|
|
assert(format("%.1f", a1) == "0.2");
|
|
assert(format("%.2f", b1) == "0.02");
|
|
|
|
// issue 9889
|
|
assert(format("%.1f", 0.09) == "0.1");
|
|
assert(format("%.1f", -0.09) == "-0.1");
|
|
assert(format("%.1f", 0.095) == "0.1");
|
|
assert(format("%.1f", -0.095) == "-0.1");
|
|
assert(format("%.1f", 0.094) == "0.1");
|
|
assert(format("%.1f", -0.094) == "-0.1");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
double a = 123.456;
|
|
double b = -123.456;
|
|
double c = 123.0;
|
|
|
|
assert(format("%10.4f",a) == " 123.4560");
|
|
assert(format("%-10.4f",a) == "123.4560 ");
|
|
assert(format("%+10.4f",a) == " +123.4560");
|
|
assert(format("% 10.4f",a) == " 123.4560");
|
|
assert(format("%010.4f",a) == "00123.4560");
|
|
assert(format("%#10.4f",a) == " 123.4560");
|
|
|
|
assert(format("%10.4f",b) == " -123.4560");
|
|
assert(format("%-10.4f",b) == "-123.4560 ");
|
|
assert(format("%+10.4f",b) == " -123.4560");
|
|
assert(format("% 10.4f",b) == " -123.4560");
|
|
assert(format("%010.4f",b) == "-0123.4560");
|
|
assert(format("%#10.4f",b) == " -123.4560");
|
|
|
|
assert(format("%10.0f",c) == " 123");
|
|
assert(format("%-10.0f",c) == "123 ");
|
|
assert(format("%+10.0f",c) == " +123");
|
|
assert(format("% 10.0f",c) == " 123");
|
|
assert(format("%010.0f",c) == "0000000123");
|
|
assert(format("%#10.0f",c) == " 123.");
|
|
|
|
assert(format("%+010.4f",a) == "+0123.4560");
|
|
assert(format("% 010.4f",a) == " 0123.4560");
|
|
assert(format("% +010.4f",a) == "+0123.4560");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
string t1 = format("[%6s] [%-6s]", 12.3, 12.3);
|
|
assert(t1 == "[ 12.3] [12.3 ]");
|
|
|
|
string t2 = format("[%6s] [%-6s]", -12.3, -12.3);
|
|
assert(t2 == "[ -12.3] [-12.3 ]");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=20396
|
|
@safe unittest
|
|
{
|
|
import std.math.operations : nextUp;
|
|
|
|
assert(format!"%a"(nextUp(0.0f)) == "0x0.000002p-126");
|
|
assert(format!"%a"(nextUp(0.0)) == "0x0.0000000000001p-1022");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=20371
|
|
@safe unittest
|
|
{
|
|
assert(format!"%.1000a"(1.0).length == 1007);
|
|
assert(format!"%.600f"(0.1).length == 602);
|
|
assert(format!"%.600e"(0.1L).length == 606);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.math.hardware; // cannot be selective, because FloatingPointControl might not be defined
|
|
|
|
// std.math's FloatingPointControl isn't available on all target platforms
|
|
static if (is(FloatingPointControl))
|
|
{
|
|
FloatingPointControl fpctrl;
|
|
|
|
fpctrl.rounding = FloatingPointControl.roundUp;
|
|
assert(format!"%.0e"(3.5) == "4e+00");
|
|
assert(format!"%.0e"(4.5) == "5e+00");
|
|
assert(format!"%.0e"(-3.5) == "-3e+00");
|
|
assert(format!"%.0e"(-4.5) == "-4e+00");
|
|
|
|
fpctrl.rounding = FloatingPointControl.roundDown;
|
|
assert(format!"%.0e"(3.5) == "3e+00");
|
|
assert(format!"%.0e"(4.5) == "4e+00");
|
|
assert(format!"%.0e"(-3.5) == "-4e+00");
|
|
assert(format!"%.0e"(-4.5) == "-5e+00");
|
|
|
|
fpctrl.rounding = FloatingPointControl.roundToZero;
|
|
assert(format!"%.0e"(3.5) == "3e+00");
|
|
assert(format!"%.0e"(4.5) == "4e+00");
|
|
assert(format!"%.0e"(-3.5) == "-3e+00");
|
|
assert(format!"%.0e"(-4.5) == "-4e+00");
|
|
|
|
fpctrl.rounding = FloatingPointControl.roundToNearest;
|
|
assert(format!"%.0e"(3.5) == "4e+00");
|
|
assert(format!"%.0e"(4.5) == "4e+00");
|
|
assert(format!"%.0e"(-3.5) == "-4e+00");
|
|
assert(format!"%.0e"(-4.5) == "-4e+00");
|
|
}
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
static assert(format("%e",1.0) == "1.000000e+00");
|
|
static assert(format("%e",-1.234e156) == "-1.234000e+156");
|
|
static assert(format("%a",1.0) == "0x1p+0");
|
|
static assert(format("%a",-1.234e156) == "-0x1.7024c96ca3ce4p+518");
|
|
static assert(format("%f",1.0) == "1.000000");
|
|
static assert(format("%f",-1.234e156) ==
|
|
"-123399999999999990477495546305353609103201879173427886566531" ~
|
|
"0740685826234179310516880117527217443004051984432279880308552" ~
|
|
"009640198043032289366552939010719744.000000");
|
|
static assert(format("%g",1.0) == "1");
|
|
static assert(format("%g",-1.234e156) == "-1.234e+156");
|
|
|
|
static assert(format("%e",1.0f) == "1.000000e+00");
|
|
static assert(format("%e",-1.234e23f) == "-1.234000e+23");
|
|
static assert(format("%a",1.0f) == "0x1p+0");
|
|
static assert(format("%a",-1.234e23f) == "-0x1.a2187p+76");
|
|
static assert(format("%f",1.0f) == "1.000000");
|
|
static assert(format("%f",-1.234e23f) == "-123399998884238311030784.000000");
|
|
static assert(format("%g",1.0f) == "1");
|
|
static assert(format("%g",-1.234e23f) == "-1.234e+23");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21641
|
|
@safe unittest
|
|
{
|
|
float a = -999999.8125;
|
|
assert(format("%#.5g",a) == "-1.0000e+06");
|
|
assert(format("%#.6g",a) == "-1.00000e+06");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=8424
|
|
@safe pure unittest
|
|
{
|
|
static assert(format("%s", 0.6f) == "0.6");
|
|
static assert(format("%s", 0.6) == "0.6");
|
|
static assert(format("%s", 0.6L) == "0.6");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=9297
|
|
@safe pure unittest
|
|
{
|
|
static if (real.mant_dig == 64) // 80 bit reals
|
|
{
|
|
assert(format("%.25f", 1.6180339887_4989484820_4586834365L) == "1.6180339887498948482072100");
|
|
}
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21853
|
|
@safe pure unittest
|
|
{
|
|
import std.math.exponential : log2;
|
|
|
|
// log2 is broken for x87-reals on some computers in CTFE
|
|
// the following test excludes these computers from the test
|
|
// (issue 21757)
|
|
enum test = cast(int) log2(3.05e2312L);
|
|
static if (real.mant_dig == 64 && test == 7681) // 80 bit reals
|
|
{
|
|
static assert(format!"%e"(real.max) == "1.189731e+4932");
|
|
}
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21842
|
|
@safe pure unittest
|
|
{
|
|
assert(format!"%-+05,g"(1.0) == "+1 ");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=20536
|
|
@safe pure unittest
|
|
{
|
|
real r = .00000095367431640625L;
|
|
assert(format("%a", r) == "0x1p-20");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21840
|
|
@safe pure unittest
|
|
{
|
|
assert(format!"% 0,e"(0.0) == " 0.000000e+00");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21841
|
|
@safe pure unittest
|
|
{
|
|
assert(format!"%0.0,e"(0.0) == "0e+00");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21836
|
|
@safe pure unittest
|
|
{
|
|
assert(format!"%-5,1g"(0.0) == "0 ");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21838
|
|
@safe pure unittest
|
|
{
|
|
assert(format!"%#,a"(0.0) == "0x0.p+0");
|
|
}
|
|
|
|
/*
|
|
Formatting a `creal` is deprecated but still kept around for a while.
|
|
*/
|
|
deprecated("Use of complex types is deprecated. Use std.complex")
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
|
|
if (is(immutable T : immutable creal) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
import std.range.primitives : put;
|
|
|
|
immutable creal val = obj;
|
|
|
|
formatValueImpl(w, val.re, f);
|
|
if (val.im >= 0)
|
|
{
|
|
put(w, '+');
|
|
}
|
|
formatValueImpl(w, val.im, f);
|
|
put(w, 'i');
|
|
}
|
|
|
|
/*
|
|
Formatting an `ireal` is deprecated but still kept around for a while.
|
|
*/
|
|
deprecated("Use of imaginary types is deprecated. Use std.complex")
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
|
|
if (is(immutable T : immutable ireal) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
import std.range.primitives : put;
|
|
|
|
immutable ireal val = obj;
|
|
|
|
formatValueImpl(w, val.im, f);
|
|
put(w, 'i');
|
|
}
|
|
|
|
/*
|
|
Individual characters are formatted as Unicode characters with `%s`
|
|
and as integers with integral-specific format specs
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
|
|
if (is(CharTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
import std.meta : AliasSeq;
|
|
|
|
CharTypeOf!T[1] val = obj;
|
|
|
|
if (f.spec == 's' || f.spec == 'c')
|
|
writeAligned(w, val[], f);
|
|
else
|
|
{
|
|
alias U = AliasSeq!(ubyte, ushort, uint)[CharTypeOf!T.sizeof/2];
|
|
formatValueImpl(w, cast(U) val[0], f);
|
|
}
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
assertCTFEable!(
|
|
{
|
|
formatTest('c', "c");
|
|
});
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
class C1
|
|
{
|
|
char val;
|
|
alias val this;
|
|
this(char v){ val = v; }
|
|
}
|
|
|
|
class C2
|
|
{
|
|
char val;
|
|
alias val this;
|
|
this(char v){ val = v; }
|
|
override string toString() const { return "C"; }
|
|
}
|
|
|
|
formatTest(new C1('c'), "c");
|
|
formatTest(new C2('c'), "C");
|
|
|
|
struct S1
|
|
{
|
|
char val;
|
|
alias val this;
|
|
}
|
|
|
|
struct S2
|
|
{
|
|
char val;
|
|
alias val this;
|
|
string toString() const { return "S"; }
|
|
}
|
|
|
|
formatTest(S1('c'), "c");
|
|
formatTest(S2('c'), "S");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
//Little Endian
|
|
formatTest("%-r", cast( char)'c', ['c' ]);
|
|
formatTest("%-r", cast(wchar)'c', ['c', 0 ]);
|
|
formatTest("%-r", cast(dchar)'c', ['c', 0, 0, 0]);
|
|
formatTest("%-r", '本', ['\x2c', '\x67'] );
|
|
|
|
//Big Endian
|
|
formatTest("%+r", cast( char)'c', [ 'c']);
|
|
formatTest("%+r", cast(wchar)'c', [0, 'c']);
|
|
formatTest("%+r", cast(dchar)'c', [0, 0, 0, 'c']);
|
|
formatTest("%+r", '本', ['\x67', '\x2c']);
|
|
}
|
|
|
|
|
|
@safe pure unittest
|
|
{
|
|
string t1 = format("[%6s] [%-6s]", 'A', 'A');
|
|
assert(t1 == "[ A] [A ]");
|
|
string t2 = format("[%6s] [%-6s]", '本', '本');
|
|
assert(t2 == "[ 本] [本 ]");
|
|
}
|
|
|
|
/*
|
|
Strings are formatted like $(REF printf, core, stdc, stdio)
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, scope T obj,
|
|
scope const ref FormatSpec!Char f)
|
|
if (is(StringTypeOf!T) && !is(StaticArrayTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
Unqual!(StringTypeOf!T) val = obj; // for `alias this`, see bug5371
|
|
formatRange(w, val, f);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
formatTest("abc", "abc");
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.exception : collectExceptionMsg;
|
|
import std.range.primitives : back;
|
|
|
|
assert(collectExceptionMsg(format("%d", "hi")).back == 'd');
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
// Test for bug 5371 for classes
|
|
class C1
|
|
{
|
|
const string var;
|
|
alias var this;
|
|
this(string s){ var = s; }
|
|
}
|
|
|
|
class C2
|
|
{
|
|
string var;
|
|
alias var this;
|
|
this(string s){ var = s; }
|
|
}
|
|
|
|
formatTest(new C1("c1"), "c1");
|
|
formatTest(new C2("c2"), "c2");
|
|
|
|
// Test for bug 5371 for structs
|
|
struct S1
|
|
{
|
|
const string var;
|
|
alias var this;
|
|
}
|
|
|
|
struct S2
|
|
{
|
|
string var;
|
|
alias var this;
|
|
}
|
|
|
|
formatTest(S1("s1"), "s1");
|
|
formatTest(S2("s2"), "s2");
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
class C3
|
|
{
|
|
string val;
|
|
alias val this;
|
|
this(string s){ val = s; }
|
|
override string toString() const { return "C"; }
|
|
}
|
|
|
|
formatTest(new C3("c3"), "C");
|
|
|
|
struct S3
|
|
{
|
|
string val; alias val this;
|
|
string toString() const { return "S"; }
|
|
}
|
|
|
|
formatTest(S3("s3"), "S");
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
//Little Endian
|
|
formatTest("%-r", "ab"c, ['a' , 'b' ]);
|
|
formatTest("%-r", "ab"w, ['a', 0 , 'b', 0 ]);
|
|
formatTest("%-r", "ab"d, ['a', 0, 0, 0, 'b', 0, 0, 0]);
|
|
formatTest("%-r", "日本語"c, ['\xe6', '\x97', '\xa5', '\xe6', '\x9c', '\xac',
|
|
'\xe8', '\xaa', '\x9e']);
|
|
formatTest("%-r", "日本語"w, ['\xe5', '\x65', '\x2c', '\x67', '\x9e', '\x8a']);
|
|
formatTest("%-r", "日本語"d, ['\xe5', '\x65', '\x00', '\x00', '\x2c', '\x67',
|
|
'\x00', '\x00', '\x9e', '\x8a', '\x00', '\x00']);
|
|
|
|
//Big Endian
|
|
formatTest("%+r", "ab"c, [ 'a', 'b']);
|
|
formatTest("%+r", "ab"w, [ 0, 'a', 0, 'b']);
|
|
formatTest("%+r", "ab"d, [0, 0, 0, 'a', 0, 0, 0, 'b']);
|
|
formatTest("%+r", "日本語"c, ['\xe6', '\x97', '\xa5', '\xe6', '\x9c', '\xac',
|
|
'\xe8', '\xaa', '\x9e']);
|
|
formatTest("%+r", "日本語"w, ['\x65', '\xe5', '\x67', '\x2c', '\x8a', '\x9e']);
|
|
formatTest("%+r", "日本語"d, ['\x00', '\x00', '\x65', '\xe5', '\x00', '\x00',
|
|
'\x67', '\x2c', '\x00', '\x00', '\x8a', '\x9e']);
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
string t1 = format("[%6s] [%-6s]", "AB", "AB");
|
|
assert(t1 == "[ AB] [AB ]");
|
|
string t2 = format("[%6s] [%-6s]", "本Ä", "本Ä");
|
|
assert(t2 == "[ 本Ä] [本Ä ]");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=6640
|
|
@safe unittest
|
|
{
|
|
import std.range.primitives : front, popFront;
|
|
|
|
struct Range
|
|
{
|
|
@safe:
|
|
|
|
string value;
|
|
@property bool empty() const { return !value.length; }
|
|
@property dchar front() const { return value.front; }
|
|
void popFront() { value.popFront(); }
|
|
|
|
@property size_t length() const { return value.length; }
|
|
}
|
|
immutable table =
|
|
[
|
|
["[%s]", "[string]"],
|
|
["[%10s]", "[ string]"],
|
|
["[%-10s]", "[string ]"],
|
|
["[%(%02x %)]", "[73 74 72 69 6e 67]"],
|
|
["[%(%c %)]", "[s t r i n g]"],
|
|
];
|
|
foreach (e; table)
|
|
{
|
|
formatTest(e[0], "string", e[1]);
|
|
formatTest(e[0], Range("string"), e[1]);
|
|
}
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
import std.meta : AliasSeq;
|
|
|
|
// string literal from valid UTF sequence is encoding free.
|
|
static foreach (StrType; AliasSeq!(string, wstring, dstring))
|
|
{
|
|
// Valid and printable (ASCII)
|
|
formatTest([cast(StrType)"hello"],
|
|
`["hello"]`);
|
|
|
|
// 1 character escape sequences (' is not escaped in strings)
|
|
formatTest([cast(StrType)"\"'\0\\\a\b\f\n\r\t\v"],
|
|
`["\"'\0\\\a\b\f\n\r\t\v"]`);
|
|
|
|
// 1 character optional escape sequences
|
|
formatTest([cast(StrType)"\'\?"],
|
|
`["'?"]`);
|
|
|
|
// Valid and non-printable code point (<= U+FF)
|
|
formatTest([cast(StrType)"\x10\x1F\x20test"],
|
|
`["\x10\x1F test"]`);
|
|
|
|
// Valid and non-printable code point (<= U+FFFF)
|
|
formatTest([cast(StrType)"\u200B..\u200F"],
|
|
`["\u200B..\u200F"]`);
|
|
|
|
// Valid and non-printable code point (<= U+10FFFF)
|
|
formatTest([cast(StrType)"\U000E0020..\U000E007F"],
|
|
`["\U000E0020..\U000E007F"]`);
|
|
}
|
|
|
|
// invalid UTF sequence needs hex-string literal postfix (c/w/d)
|
|
{
|
|
// U+FFFF with UTF-8 (Invalid code point for interchange)
|
|
formatTest([cast(string)[0xEF, 0xBF, 0xBF]],
|
|
`[[cast(char) 0xEF, cast(char) 0xBF, cast(char) 0xBF]]`);
|
|
|
|
// U+FFFF with UTF-16 (Invalid code point for interchange)
|
|
formatTest([cast(wstring)[0xFFFF]],
|
|
`[[cast(wchar) 0xFFFF]]`);
|
|
|
|
// U+FFFF with UTF-32 (Invalid code point for interchange)
|
|
formatTest([cast(dstring)[0xFFFF]],
|
|
`[[cast(dchar) 0xFFFF]]`);
|
|
}
|
|
}
|
|
|
|
/*
|
|
Static-size arrays are formatted as dynamic arrays.
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, auto ref T obj,
|
|
scope const ref FormatSpec!Char f)
|
|
if (is(StaticArrayTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
formatValueImpl(w, obj[], f);
|
|
}
|
|
|
|
// Test for https://issues.dlang.org/show_bug.cgi?id=8310
|
|
@safe unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : formatValue;
|
|
|
|
FormatSpec!char f;
|
|
auto w = appender!string();
|
|
|
|
char[2] two = ['a', 'b'];
|
|
formatValue(w, two, f);
|
|
|
|
char[2] getTwo() { return two; }
|
|
formatValue(w, getTwo(), f);
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=18205
|
|
@safe pure unittest
|
|
{
|
|
assert("|%8s|".format("abc") == "| abc|");
|
|
assert("|%8s|".format("αβγ") == "| αβγ|");
|
|
assert("|%8s|".format(" ") == "| |");
|
|
assert("|%8s|".format("été"d) == "| été|");
|
|
assert("|%8s|".format("été 2018"w) == "|été 2018|");
|
|
|
|
assert("%2s".format("e\u0301"w) == " e\u0301");
|
|
assert("%2s".format("a\u0310\u0337"d) == " a\u0310\u0337");
|
|
}
|
|
|
|
/*
|
|
Dynamic arrays are formatted as input ranges.
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
|
|
if (is(DynamicArrayTypeOf!T) && !is(StringTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
static if (is(immutable(ArrayTypeOf!T) == immutable(void[])))
|
|
{
|
|
formatValueImpl(w, cast(const ubyte[]) obj, f);
|
|
}
|
|
else static if (!isInputRange!T)
|
|
{
|
|
alias U = Unqual!(ArrayTypeOf!T);
|
|
static assert(isInputRange!U, U.stringof ~ " must be an InputRange");
|
|
U val = obj;
|
|
formatValueImpl(w, val, f);
|
|
}
|
|
else
|
|
{
|
|
formatRange(w, obj, f);
|
|
}
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=20848
|
|
@safe unittest
|
|
{
|
|
class C
|
|
{
|
|
immutable(void)[] data;
|
|
}
|
|
|
|
import std.typecons : Nullable;
|
|
Nullable!C c;
|
|
}
|
|
|
|
// alias this, input range I/F, and toString()
|
|
@system unittest
|
|
{
|
|
struct S(int flags)
|
|
{
|
|
int[] arr;
|
|
static if (flags & 1)
|
|
alias arr this;
|
|
|
|
static if (flags & 2)
|
|
{
|
|
@property bool empty() const { return arr.length == 0; }
|
|
@property int front() const { return arr[0] * 2; }
|
|
void popFront() { arr = arr[1 .. $]; }
|
|
}
|
|
|
|
static if (flags & 4)
|
|
string toString() const { return "S"; }
|
|
}
|
|
|
|
formatTest(S!0b000([0, 1, 2]), "S!0([0, 1, 2])");
|
|
formatTest(S!0b001([0, 1, 2]), "[0, 1, 2]"); // Test for bug 7628
|
|
formatTest(S!0b010([0, 1, 2]), "[0, 2, 4]");
|
|
formatTest(S!0b011([0, 1, 2]), "[0, 2, 4]");
|
|
formatTest(S!0b100([0, 1, 2]), "S");
|
|
formatTest(S!0b101([0, 1, 2]), "S"); // Test for bug 7628
|
|
formatTest(S!0b110([0, 1, 2]), "S");
|
|
formatTest(S!0b111([0, 1, 2]), "S");
|
|
|
|
class C(uint flags)
|
|
{
|
|
int[] arr;
|
|
static if (flags & 1)
|
|
alias arr this;
|
|
|
|
this(int[] a) { arr = a; }
|
|
|
|
static if (flags & 2)
|
|
{
|
|
@property bool empty() const { return arr.length == 0; }
|
|
@property int front() const { return arr[0] * 2; }
|
|
void popFront() { arr = arr[1 .. $]; }
|
|
}
|
|
|
|
static if (flags & 4)
|
|
override string toString() const { return "C"; }
|
|
}
|
|
|
|
formatTest(new C!0b000([0, 1, 2]), (new C!0b000([])).toString());
|
|
formatTest(new C!0b001([0, 1, 2]), "[0, 1, 2]"); // Test for bug 7628
|
|
formatTest(new C!0b010([0, 1, 2]), "[0, 2, 4]");
|
|
formatTest(new C!0b011([0, 1, 2]), "[0, 2, 4]");
|
|
formatTest(new C!0b100([0, 1, 2]), "C");
|
|
formatTest(new C!0b101([0, 1, 2]), "C"); // Test for bug 7628
|
|
formatTest(new C!0b110([0, 1, 2]), "C");
|
|
formatTest(new C!0b111([0, 1, 2]), "C");
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
// void[]
|
|
void[] val0;
|
|
formatTest(val0, "[]");
|
|
|
|
void[] val = cast(void[]) cast(ubyte[])[1, 2, 3];
|
|
formatTest(val, "[1, 2, 3]");
|
|
|
|
void[0] sval0 = [];
|
|
formatTest(sval0, "[]");
|
|
|
|
void[3] sval = cast(void[3]) cast(ubyte[3])[1, 2, 3];
|
|
formatTest(sval, "[1, 2, 3]");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
// const(T[]) -> const(T)[]
|
|
const short[] a = [1, 2, 3];
|
|
formatTest(a, "[1, 2, 3]");
|
|
|
|
struct S
|
|
{
|
|
const(int[]) arr;
|
|
alias arr this;
|
|
}
|
|
|
|
auto s = S([1,2,3]);
|
|
formatTest(s, "[1, 2, 3]");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
// nested range formatting with array of string
|
|
formatTest("%({%(%02x %)}%| %)", ["test", "msg"],
|
|
`{74 65 73 74} {6d 73 67}`);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
// stop auto escaping inside range formatting
|
|
auto arr = ["hello", "world"];
|
|
formatTest("%(%s, %)", arr, `"hello", "world"`);
|
|
formatTest("%-(%s, %)", arr, `hello, world`);
|
|
|
|
auto aa1 = [1:"hello", 2:"world"];
|
|
formatTest("%(%s:%s, %)", aa1, [`1:"hello", 2:"world"`, `2:"world", 1:"hello"`]);
|
|
formatTest("%-(%s:%s, %)", aa1, [`1:hello, 2:world`, `2:world, 1:hello`]);
|
|
|
|
auto aa2 = [1:["ab", "cd"], 2:["ef", "gh"]];
|
|
formatTest("%-(%s:%s, %)", aa2, [`1:["ab", "cd"], 2:["ef", "gh"]`, `2:["ef", "gh"], 1:["ab", "cd"]`]);
|
|
formatTest("%-(%s:%(%s%), %)", aa2, [`1:"ab""cd", 2:"ef""gh"`, `2:"ef""gh", 1:"ab""cd"`]);
|
|
formatTest("%-(%s:%-(%s%)%|, %)", aa2, [`1:abcd, 2:efgh`, `2:efgh, 1:abcd`]);
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=18778
|
|
@safe pure unittest
|
|
{
|
|
assert(format("%-(%1$s - %1$s, %)", ["A", "B", "C"]) == "A - A, B - B, C - C");
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
int[] a = [ 1, 3, 2 ];
|
|
formatTest("testing %(%s & %) embedded", a,
|
|
"testing 1 & 3 & 2 embedded");
|
|
formatTest("testing %((%s) %)) wyda3", a,
|
|
"testing (1) (3) (2) wyda3");
|
|
|
|
int[0] empt = [];
|
|
formatTest("(%s)", empt, "([])");
|
|
}
|
|
|
|
// input range formatting
|
|
private void formatRange(Writer, T, Char)(ref Writer w, ref T val, scope const ref FormatSpec!Char f)
|
|
if (isInputRange!T)
|
|
{
|
|
import std.conv : text;
|
|
import std.format : FormatException, formatValue, NoOpSink;
|
|
import std.range.primitives : ElementType, empty, front, hasLength,
|
|
walkLength, isForwardRange, isInfinite, popFront, put;
|
|
|
|
// in this mode, we just want to do a representative print to discover
|
|
// if the format spec is valid
|
|
enum formatTestMode = is(Writer == NoOpSink);
|
|
|
|
// Formatting character ranges like string
|
|
if (f.spec == 's')
|
|
{
|
|
alias E = ElementType!T;
|
|
|
|
static if (!is(E == enum) && is(CharTypeOf!E))
|
|
{
|
|
static if (is(StringTypeOf!T))
|
|
writeAligned(w, val[0 .. f.precision < $ ? f.precision : $], f);
|
|
else
|
|
{
|
|
if (!f.flDash)
|
|
{
|
|
static if (hasLength!T)
|
|
{
|
|
// right align
|
|
auto len = val.length;
|
|
}
|
|
else static if (isForwardRange!T && !isInfinite!T)
|
|
{
|
|
auto len = walkLength(val.save);
|
|
}
|
|
else
|
|
{
|
|
import std.format : enforceFmt;
|
|
enforceFmt(f.width == 0, "Cannot right-align a range without length");
|
|
size_t len = 0;
|
|
}
|
|
if (f.precision != f.UNSPECIFIED && len > f.precision)
|
|
len = f.precision;
|
|
|
|
if (f.width > len)
|
|
foreach (i ; 0 .. f.width - len)
|
|
put(w, ' ');
|
|
if (f.precision == f.UNSPECIFIED)
|
|
put(w, val);
|
|
else
|
|
{
|
|
size_t printed = 0;
|
|
for (; !val.empty && printed < f.precision; val.popFront(), ++printed)
|
|
put(w, val.front);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size_t printed = void;
|
|
|
|
// left align
|
|
if (f.precision == f.UNSPECIFIED)
|
|
{
|
|
static if (hasLength!T)
|
|
{
|
|
printed = val.length;
|
|
put(w, val);
|
|
}
|
|
else
|
|
{
|
|
printed = 0;
|
|
for (; !val.empty; val.popFront(), ++printed)
|
|
{
|
|
put(w, val.front);
|
|
static if (formatTestMode) break; // one is enough to test
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
printed = 0;
|
|
for (; !val.empty && printed < f.precision; val.popFront(), ++printed)
|
|
put(w, val.front);
|
|
}
|
|
|
|
if (f.width > printed)
|
|
foreach (i ; 0 .. f.width - printed)
|
|
put(w, ' ');
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
put(w, f.seqBefore);
|
|
if (!val.empty)
|
|
{
|
|
formatElement(w, val.front, f);
|
|
val.popFront();
|
|
for (size_t i; !val.empty; val.popFront(), ++i)
|
|
{
|
|
put(w, f.seqSeparator);
|
|
formatElement(w, val.front, f);
|
|
static if (formatTestMode) break; // one is enough to test
|
|
}
|
|
}
|
|
static if (!isInfinite!T) put(w, f.seqAfter);
|
|
}
|
|
}
|
|
else if (f.spec == 'r')
|
|
{
|
|
static if (is(DynamicArrayTypeOf!T))
|
|
{
|
|
alias ARR = DynamicArrayTypeOf!T;
|
|
scope a = cast(ARR) val;
|
|
foreach (e ; a)
|
|
{
|
|
formatValue(w, e, f);
|
|
static if (formatTestMode) break; // one is enough to test
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (size_t i; !val.empty; val.popFront(), ++i)
|
|
{
|
|
formatValue(w, val.front, f);
|
|
static if (formatTestMode) break; // one is enough to test
|
|
}
|
|
}
|
|
}
|
|
else if (f.spec == '(')
|
|
{
|
|
if (val.empty)
|
|
return;
|
|
// Nested specifier is to be used
|
|
for (;;)
|
|
{
|
|
auto fmt = FormatSpec!Char(f.nested);
|
|
w: while (true)
|
|
{
|
|
immutable r = fmt.writeUpToNextSpec(w);
|
|
// There was no format specifier, so break
|
|
if (!r)
|
|
break;
|
|
if (f.flDash)
|
|
formatValue(w, val.front, fmt);
|
|
else
|
|
formatElement(w, val.front, fmt);
|
|
// Check if there will be a format specifier farther on in the
|
|
// string. If so, continue the loop, otherwise break. This
|
|
// prevents extra copies of the `sep` from showing up.
|
|
foreach (size_t i; 0 .. fmt.trailing.length)
|
|
if (fmt.trailing[i] == '%')
|
|
continue w;
|
|
break w;
|
|
}
|
|
static if (formatTestMode)
|
|
{
|
|
break; // one is enough to test
|
|
}
|
|
else
|
|
{
|
|
if (f.sep !is null)
|
|
{
|
|
put(w, fmt.trailing);
|
|
val.popFront();
|
|
if (val.empty)
|
|
break;
|
|
put(w, f.sep);
|
|
}
|
|
else
|
|
{
|
|
val.popFront();
|
|
if (val.empty)
|
|
break;
|
|
put(w, fmt.trailing);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
throw new FormatException(text("Incorrect format specifier for range: %", f.spec));
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=20218
|
|
@safe pure unittest
|
|
{
|
|
void notCalled()
|
|
{
|
|
import std.range : repeat;
|
|
|
|
auto value = 1.repeat;
|
|
|
|
// test that range is not evaluated to completion at compiletime
|
|
format!"%s"(value);
|
|
}
|
|
}
|
|
|
|
// character formatting with ecaping
|
|
void formatChar(Writer)(ref Writer w, in dchar c, in char quote)
|
|
{
|
|
import std.format : formattedWrite;
|
|
import std.range.primitives : put;
|
|
import std.uni : isGraphical;
|
|
|
|
string fmt;
|
|
if (isGraphical(c))
|
|
{
|
|
if (c == quote || c == '\\')
|
|
put(w, '\\');
|
|
put(w, c);
|
|
return;
|
|
}
|
|
else if (c <= 0xFF)
|
|
{
|
|
if (c < 0x20)
|
|
{
|
|
foreach (i, k; "\n\r\t\a\b\f\v\0")
|
|
{
|
|
if (c == k)
|
|
{
|
|
put(w, '\\');
|
|
put(w, "nrtabfv0"[i]);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
fmt = "\\x%02X";
|
|
}
|
|
else if (c <= 0xFFFF)
|
|
fmt = "\\u%04X";
|
|
else
|
|
fmt = "\\U%08X";
|
|
|
|
formattedWrite(w, fmt, cast(uint) c);
|
|
}
|
|
|
|
/*
|
|
Associative arrays are formatted by using `':'` and $(D ", ") as
|
|
separators, and enclosed by `'['` and `']'`.
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T obj, scope const ref FormatSpec!Char f)
|
|
if (is(AssocArrayTypeOf!T) && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
import std.format : enforceFmt, formatValue;
|
|
import std.range.primitives : put;
|
|
|
|
AssocArrayTypeOf!T val = obj;
|
|
const spec = f.spec;
|
|
|
|
enforceFmt(spec == 's' || spec == '(',
|
|
"incompatible format character for associative array argument: %" ~ spec);
|
|
|
|
enum const(Char)[] defSpec = "%s" ~ f.keySeparator ~ "%s" ~ f.seqSeparator;
|
|
auto fmtSpec = spec == '(' ? f.nested : defSpec;
|
|
|
|
// testing correct nested format spec
|
|
import std.format : NoOpSink;
|
|
auto noop = NoOpSink();
|
|
auto test = FormatSpec!Char(fmtSpec);
|
|
enforceFmt(test.writeUpToNextSpec(noop),
|
|
"nested format string for associative array contains no format specifier");
|
|
enforceFmt(test.writeUpToNextSpec(noop),
|
|
"nested format string for associative array contains only one format specifier");
|
|
enforceFmt(!test.writeUpToNextSpec(noop),
|
|
"nested format string for associative array contains more than two format specifiers");
|
|
|
|
size_t i = 0;
|
|
immutable end = val.length;
|
|
|
|
if (spec == 's')
|
|
put(w, f.seqBefore);
|
|
foreach (k, ref v; val)
|
|
{
|
|
auto fmt = FormatSpec!Char(fmtSpec);
|
|
fmt.writeUpToNextSpec(w);
|
|
if (f.flDash)
|
|
{
|
|
formatValue(w, k, fmt);
|
|
fmt.writeUpToNextSpec(w);
|
|
formatValue(w, v, fmt);
|
|
}
|
|
else
|
|
{
|
|
formatElement(w, k, fmt);
|
|
fmt.writeUpToNextSpec(w);
|
|
formatElement(w, v, fmt);
|
|
}
|
|
if (f.sep !is null)
|
|
{
|
|
fmt.writeUpToNextSpec(w);
|
|
if (++i != end)
|
|
put(w, f.sep);
|
|
}
|
|
else
|
|
{
|
|
if (++i != end)
|
|
fmt.writeUpToNextSpec(w);
|
|
}
|
|
}
|
|
if (spec == 's')
|
|
put(w, f.seqAfter);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.exception : collectExceptionMsg;
|
|
import std.format : FormatException;
|
|
import std.range.primitives : back;
|
|
|
|
assert(collectExceptionMsg!FormatException(format("%d", [0:1])).back == 'd');
|
|
|
|
int[string] aa0;
|
|
formatTest(aa0, `[]`);
|
|
|
|
// elements escaping
|
|
formatTest(["aaa":1, "bbb":2],
|
|
[`["aaa":1, "bbb":2]`, `["bbb":2, "aaa":1]`]);
|
|
formatTest(['c':"str"],
|
|
`['c':"str"]`);
|
|
formatTest(['"':"\"", '\'':"'"],
|
|
[`['"':"\"", '\'':"'"]`, `['\'':"'", '"':"\""]`]);
|
|
|
|
// range formatting for AA
|
|
auto aa3 = [1:"hello", 2:"world"];
|
|
// escape
|
|
formatTest("{%(%s:%s $ %)}", aa3,
|
|
[`{1:"hello" $ 2:"world"}`, `{2:"world" $ 1:"hello"}`]);
|
|
// use range formatting for key and value, and use %|
|
|
formatTest("{%([%04d->%(%c.%)]%| $ %)}", aa3,
|
|
[`{[0001->h.e.l.l.o] $ [0002->w.o.r.l.d]}`,
|
|
`{[0002->w.o.r.l.d] $ [0001->h.e.l.l.o]}`]);
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=12135
|
|
formatTest("%(%s:<%s>%|,%)", [1:2], "1:<2>");
|
|
formatTest("%(%s:<%s>%|%)" , [1:2], "1:<2>");
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
class C1
|
|
{
|
|
int[char] val;
|
|
alias val this;
|
|
this(int[char] v){ val = v; }
|
|
}
|
|
|
|
class C2
|
|
{
|
|
int[char] val;
|
|
alias val this;
|
|
this(int[char] v){ val = v; }
|
|
override string toString() const { return "C"; }
|
|
}
|
|
|
|
formatTest(new C1(['c':1, 'd':2]), [`['c':1, 'd':2]`, `['d':2, 'c':1]`]);
|
|
formatTest(new C2(['c':1, 'd':2]), "C");
|
|
|
|
struct S1
|
|
{
|
|
int[char] val;
|
|
alias val this;
|
|
}
|
|
|
|
struct S2
|
|
{
|
|
int[char] val;
|
|
alias val this;
|
|
string toString() const { return "S"; }
|
|
}
|
|
|
|
formatTest(S1(['c':1, 'd':2]), [`['c':1, 'd':2]`, `['d':2, 'c':1]`]);
|
|
formatTest(S2(['c':1, 'd':2]), "S");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21875
|
|
@system unittest
|
|
{
|
|
import std.exception : assertThrown;
|
|
import std.format : FormatException;
|
|
|
|
auto aa = [ 1 : "x", 2 : "y", 3 : "z" ];
|
|
|
|
assertThrown!FormatException(format("%(%)", aa));
|
|
assertThrown!FormatException(format("%(%s%)", aa));
|
|
assertThrown!FormatException(format("%(%s%s%s%)", aa));
|
|
}
|
|
|
|
enum HasToStringResult
|
|
{
|
|
none,
|
|
hasSomeToString,
|
|
inCharSink,
|
|
inCharSinkFormatString,
|
|
inCharSinkFormatSpec,
|
|
constCharSink,
|
|
constCharSinkFormatString,
|
|
constCharSinkFormatSpec,
|
|
customPutWriter,
|
|
customPutWriterFormatSpec,
|
|
}
|
|
|
|
private enum hasPreviewIn = !is(typeof(mixin(q{(in ref int a) => a})));
|
|
|
|
template hasToString(T, Char)
|
|
{
|
|
static if (isPointer!T)
|
|
{
|
|
// X* does not have toString, even if X is aggregate type has toString.
|
|
enum hasToString = HasToStringResult.none;
|
|
}
|
|
else static if (is(typeof(
|
|
{
|
|
T val = void;
|
|
const FormatSpec!Char f;
|
|
static struct S {void put(scope Char s){}}
|
|
S s;
|
|
val.toString(s, f);
|
|
static assert(!__traits(compiles, val.toString(s, FormatSpec!Char())),
|
|
"force toString to take parameters by ref");
|
|
static assert(!__traits(compiles, val.toString(S(), f)),
|
|
"force toString to take parameters by ref");
|
|
})))
|
|
{
|
|
enum hasToString = HasToStringResult.customPutWriterFormatSpec;
|
|
}
|
|
else static if (is(typeof(
|
|
{
|
|
T val = void;
|
|
static struct S {void put(scope Char s){}}
|
|
S s;
|
|
val.toString(s);
|
|
static assert(!__traits(compiles, val.toString(S())),
|
|
"force toString to take parameters by ref");
|
|
})))
|
|
{
|
|
enum hasToString = HasToStringResult.customPutWriter;
|
|
}
|
|
else static if (is(typeof({ T val = void; FormatSpec!Char f; val.toString((scope const(char)[] s){}, f); })))
|
|
{
|
|
enum hasToString = HasToStringResult.constCharSinkFormatSpec;
|
|
}
|
|
else static if (is(typeof({ T val = void; val.toString((scope const(char)[] s){}, "%s"); })))
|
|
{
|
|
enum hasToString = HasToStringResult.constCharSinkFormatString;
|
|
}
|
|
else static if (is(typeof({ T val = void; val.toString((scope const(char)[] s){}); })))
|
|
{
|
|
enum hasToString = HasToStringResult.constCharSink;
|
|
}
|
|
|
|
else static if (hasPreviewIn &&
|
|
is(typeof({ T val = void; FormatSpec!Char f; val.toString((in char[] s){}, f); })))
|
|
{
|
|
enum hasToString = HasToStringResult.inCharSinkFormatSpec;
|
|
}
|
|
else static if (hasPreviewIn &&
|
|
is(typeof({ T val = void; val.toString((in char[] s){}, "%s"); })))
|
|
{
|
|
enum hasToString = HasToStringResult.inCharSinkFormatString;
|
|
}
|
|
else static if (hasPreviewIn &&
|
|
is(typeof({ T val = void; val.toString((in char[] s){}); })))
|
|
{
|
|
enum hasToString = HasToStringResult.inCharSink;
|
|
}
|
|
|
|
else static if (is(typeof({ T val = void; return val.toString(); }()) S) && isSomeString!S)
|
|
{
|
|
enum hasToString = HasToStringResult.hasSomeToString;
|
|
}
|
|
else
|
|
{
|
|
enum hasToString = HasToStringResult.none;
|
|
}
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.range.primitives : isOutputRange;
|
|
|
|
static struct A
|
|
{
|
|
void toString(Writer)(ref Writer w)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct B
|
|
{
|
|
void toString(scope void delegate(scope const(char)[]) sink, scope FormatSpec!char fmt) {}
|
|
}
|
|
static struct C
|
|
{
|
|
void toString(scope void delegate(scope const(char)[]) sink, string fmt) {}
|
|
}
|
|
static struct D
|
|
{
|
|
void toString(scope void delegate(scope const(char)[]) sink) {}
|
|
}
|
|
static struct E
|
|
{
|
|
string toString() {return "";}
|
|
}
|
|
static struct F
|
|
{
|
|
void toString(Writer)(ref Writer w, scope const ref FormatSpec!char fmt)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct G
|
|
{
|
|
string toString() {return "";}
|
|
void toString(Writer)(ref Writer w) if (isOutputRange!(Writer, string)) {}
|
|
}
|
|
static struct H
|
|
{
|
|
string toString() {return "";}
|
|
void toString(Writer)(ref Writer w, scope const ref FormatSpec!char fmt)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct I
|
|
{
|
|
void toString(Writer)(ref Writer w) if (isOutputRange!(Writer, string)) {}
|
|
void toString(Writer)(ref Writer w, scope const ref FormatSpec!char fmt)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct J
|
|
{
|
|
string toString() {return "";}
|
|
void toString(Writer)(ref Writer w, scope ref FormatSpec!char fmt)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct K
|
|
{
|
|
void toString(Writer)(Writer w, scope const ref FormatSpec!char fmt)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct L
|
|
{
|
|
void toString(Writer)(ref Writer w, scope const FormatSpec!char fmt)
|
|
if (isOutputRange!(Writer, string))
|
|
{}
|
|
}
|
|
static struct M
|
|
{
|
|
void toString(scope void delegate(in char[]) sink, in FormatSpec!char fmt) {}
|
|
}
|
|
static struct N
|
|
{
|
|
void toString(scope void delegate(in char[]) sink, string fmt) {}
|
|
}
|
|
static struct O
|
|
{
|
|
void toString(scope void delegate(in char[]) sink) {}
|
|
}
|
|
|
|
with(HasToStringResult)
|
|
{
|
|
static assert(hasToString!(A, char) == customPutWriter);
|
|
static assert(hasToString!(B, char) == constCharSinkFormatSpec);
|
|
static assert(hasToString!(C, char) == constCharSinkFormatString);
|
|
static assert(hasToString!(D, char) == constCharSink);
|
|
static assert(hasToString!(E, char) == hasSomeToString);
|
|
static assert(hasToString!(F, char) == customPutWriterFormatSpec);
|
|
static assert(hasToString!(G, char) == customPutWriter);
|
|
static assert(hasToString!(H, char) == customPutWriterFormatSpec);
|
|
static assert(hasToString!(I, char) == customPutWriterFormatSpec);
|
|
static assert(hasToString!(J, char) == hasSomeToString);
|
|
static assert(hasToString!(K, char) == constCharSinkFormatSpec);
|
|
static assert(hasToString!(L, char) == none);
|
|
static if (hasPreviewIn)
|
|
{
|
|
static assert(hasToString!(M, char) == inCharSinkFormatSpec);
|
|
static assert(hasToString!(N, char) == inCharSinkFormatString);
|
|
static assert(hasToString!(O, char) == inCharSink);
|
|
}
|
|
}
|
|
}
|
|
|
|
// object formatting with toString
|
|
private void formatObject(Writer, T, Char)(ref Writer w, ref T val, scope const ref FormatSpec!Char f)
|
|
if (hasToString!(T, Char))
|
|
{
|
|
import std.format : NoOpSink;
|
|
import std.range.primitives : put;
|
|
|
|
enum overload = hasToString!(T, Char);
|
|
|
|
enum noop = is(Writer == NoOpSink);
|
|
|
|
static if (overload == HasToStringResult.customPutWriterFormatSpec)
|
|
{
|
|
static if (!noop) val.toString(w, f);
|
|
}
|
|
else static if (overload == HasToStringResult.customPutWriter)
|
|
{
|
|
static if (!noop) val.toString(w);
|
|
}
|
|
else static if (overload == HasToStringResult.constCharSinkFormatSpec)
|
|
{
|
|
static if (!noop) val.toString((scope const(char)[] s) { put(w, s); }, f);
|
|
}
|
|
else static if (overload == HasToStringResult.constCharSinkFormatString)
|
|
{
|
|
static if (!noop) val.toString((scope const(char)[] s) { put(w, s); }, f.getCurFmtStr());
|
|
}
|
|
else static if (overload == HasToStringResult.constCharSink)
|
|
{
|
|
static if (!noop) val.toString((scope const(char)[] s) { put(w, s); });
|
|
}
|
|
else static if (overload == HasToStringResult.inCharSinkFormatSpec)
|
|
{
|
|
static if (!noop) val.toString((in char[] s) { put(w, s); }, f);
|
|
}
|
|
else static if (overload == HasToStringResult.inCharSinkFormatString)
|
|
{
|
|
static if (!noop) val.toString((in char[] s) { put(w, s); }, f.getCurFmtStr());
|
|
}
|
|
else static if (overload == HasToStringResult.inCharSink)
|
|
{
|
|
static if (!noop) val.toString((in char[] s) { put(w, s); });
|
|
}
|
|
else static if (overload == HasToStringResult.hasSomeToString)
|
|
{
|
|
static if (!noop) put(w, val.toString());
|
|
}
|
|
else
|
|
{
|
|
static assert(0, "No way found to format " ~ T.stringof ~ " as string");
|
|
}
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
import std.exception : assertThrown;
|
|
import std.format : FormatException;
|
|
|
|
static interface IF1 { }
|
|
class CIF1 : IF1 { }
|
|
static struct SF1 { }
|
|
static union UF1 { }
|
|
static class CF1 { }
|
|
|
|
static interface IF2 { string toString(); }
|
|
static class CIF2 : IF2 { override string toString() { return ""; } }
|
|
static struct SF2 { string toString() { return ""; } }
|
|
static union UF2 { string toString() { return ""; } }
|
|
static class CF2 { override string toString() { return ""; } }
|
|
|
|
static interface IK1 { void toString(scope void delegate(scope const(char)[]) sink,
|
|
FormatSpec!char) const; }
|
|
static class CIK1 : IK1 { override void toString(scope void delegate(scope const(char)[]) sink,
|
|
FormatSpec!char) const { sink("CIK1"); } }
|
|
static struct KS1 { void toString(scope void delegate(scope const(char)[]) sink,
|
|
FormatSpec!char) const { sink("KS1"); } }
|
|
|
|
static union KU1 { void toString(scope void delegate(scope const(char)[]) sink,
|
|
FormatSpec!char) const { sink("KU1"); } }
|
|
|
|
static class KC1 { void toString(scope void delegate(scope const(char)[]) sink,
|
|
FormatSpec!char) const { sink("KC1"); } }
|
|
|
|
IF1 cif1 = new CIF1;
|
|
assertThrown!FormatException(format("%f", cif1));
|
|
assertThrown!FormatException(format("%f", SF1()));
|
|
assertThrown!FormatException(format("%f", UF1()));
|
|
assertThrown!FormatException(format("%f", new CF1()));
|
|
|
|
IF2 cif2 = new CIF2;
|
|
assertThrown!FormatException(format("%f", cif2));
|
|
assertThrown!FormatException(format("%f", SF2()));
|
|
assertThrown!FormatException(format("%f", UF2()));
|
|
assertThrown!FormatException(format("%f", new CF2()));
|
|
|
|
IK1 cik1 = new CIK1;
|
|
assert(format("%f", cik1) == "CIK1");
|
|
assert(format("%f", KS1()) == "KS1");
|
|
assert(format("%f", KU1()) == "KU1");
|
|
assert(format("%f", new KC1()) == "KC1");
|
|
}
|
|
|
|
/*
|
|
Aggregates
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T val, scope const ref FormatSpec!Char f)
|
|
if (is(T == class) && !is(T == enum))
|
|
{
|
|
import std.range.primitives : put;
|
|
|
|
enforceValidFormatSpec!(T, Char)(f);
|
|
|
|
// TODO: remove this check once `@disable override` deprecation cycle is finished
|
|
static if (__traits(hasMember, T, "toString") && isSomeFunction!(val.toString))
|
|
static assert(!__traits(isDisabled, T.toString), T.stringof ~
|
|
" cannot be formatted because its `toString` is marked with `@disable`");
|
|
|
|
if (val is null)
|
|
put(w, "null");
|
|
else
|
|
{
|
|
import std.algorithm.comparison : among;
|
|
enum overload = hasToString!(T, Char);
|
|
with(HasToStringResult)
|
|
static if ((is(T == immutable) || is(T == const) || is(T == shared)) && overload == none)
|
|
{
|
|
// Remove this when Object gets const toString
|
|
// https://issues.dlang.org/show_bug.cgi?id=7879
|
|
static if (is(T == immutable))
|
|
put(w, "immutable(");
|
|
else static if (is(T == const))
|
|
put(w, "const(");
|
|
else static if (is(T == shared))
|
|
put(w, "shared(");
|
|
|
|
put(w, typeid(Unqual!T).name);
|
|
put(w, ')');
|
|
}
|
|
else static if (overload.among(constCharSink, constCharSinkFormatString, constCharSinkFormatSpec) ||
|
|
(!isInputRange!T && !is(BuiltinTypeOf!T)))
|
|
{
|
|
formatObject!(Writer, T, Char)(w, val, f);
|
|
}
|
|
else
|
|
{
|
|
// string delegate() dg = &val.toString;
|
|
Object o = val; // workaround
|
|
string delegate() dg = &o.toString;
|
|
scope Object object = new Object();
|
|
if (dg.funcptr != (&object.toString).funcptr) // toString is overridden
|
|
{
|
|
formatObject(w, val, f);
|
|
}
|
|
else static if (isInputRange!T)
|
|
{
|
|
formatRange(w, val, f);
|
|
}
|
|
else static if (is(BuiltinTypeOf!T X))
|
|
{
|
|
X x = val;
|
|
formatValueImpl(w, x, f);
|
|
}
|
|
else
|
|
{
|
|
formatObject(w, val, f);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.range.interfaces : inputRangeObject;
|
|
|
|
// class range (https://issues.dlang.org/show_bug.cgi?id=5154)
|
|
auto c = inputRangeObject([1,2,3,4]);
|
|
formatTest(c, "[1, 2, 3, 4]");
|
|
assert(c.empty);
|
|
c = null;
|
|
formatTest(c, "null");
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
// https://issues.dlang.org/show_bug.cgi?id=5354
|
|
// If the class has both range I/F and custom toString, the use of custom
|
|
// toString routine is prioritized.
|
|
|
|
// Enable the use of custom toString that gets a sink delegate
|
|
// for class formatting.
|
|
|
|
enum inputRangeCode =
|
|
q{
|
|
int[] arr;
|
|
this(int[] a){ arr = a; }
|
|
@property int front() const { return arr[0]; }
|
|
@property bool empty() const { return arr.length == 0; }
|
|
void popFront(){ arr = arr[1 .. $]; }
|
|
};
|
|
|
|
class C1
|
|
{
|
|
mixin(inputRangeCode);
|
|
void toString(scope void delegate(scope const(char)[]) dg,
|
|
scope const ref FormatSpec!char f) const
|
|
{
|
|
dg("[012]");
|
|
}
|
|
}
|
|
class C2
|
|
{
|
|
mixin(inputRangeCode);
|
|
void toString(scope void delegate(const(char)[]) dg, string f) const { dg("[012]"); }
|
|
}
|
|
class C3
|
|
{
|
|
mixin(inputRangeCode);
|
|
void toString(scope void delegate(const(char)[]) dg) const { dg("[012]"); }
|
|
}
|
|
class C4
|
|
{
|
|
mixin(inputRangeCode);
|
|
override string toString() const { return "[012]"; }
|
|
}
|
|
class C5
|
|
{
|
|
mixin(inputRangeCode);
|
|
}
|
|
|
|
formatTest(new C1([0, 1, 2]), "[012]");
|
|
formatTest(new C2([0, 1, 2]), "[012]");
|
|
formatTest(new C3([0, 1, 2]), "[012]");
|
|
formatTest(new C4([0, 1, 2]), "[012]");
|
|
formatTest(new C5([0, 1, 2]), "[0, 1, 2]");
|
|
}
|
|
|
|
// outside the unittest block, otherwise the FQN of the
|
|
// class contains the line number of the unittest
|
|
version (StdUnittest)
|
|
{
|
|
private class C {}
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=7879
|
|
@safe unittest
|
|
{
|
|
const(C) c;
|
|
auto s = format("%s", c);
|
|
assert(s == "null");
|
|
|
|
immutable(C) c2 = new C();
|
|
s = format("%s", c2);
|
|
assert(s == "immutable(std.format.internal.write.C)");
|
|
|
|
const(C) c3 = new C();
|
|
s = format("%s", c3);
|
|
assert(s == "const(std.format.internal.write.C)");
|
|
|
|
shared(C) c4 = new C();
|
|
s = format("%s", c4);
|
|
assert(s == "shared(std.format.internal.write.C)");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=7879
|
|
@safe unittest
|
|
{
|
|
class F
|
|
{
|
|
override string toString() const @safe
|
|
{
|
|
return "Foo";
|
|
}
|
|
}
|
|
|
|
const(F) c;
|
|
auto s = format("%s", c);
|
|
assert(s == "null");
|
|
|
|
const(F) c2 = new F();
|
|
s = format("%s", c2);
|
|
assert(s == "Foo", s);
|
|
}
|
|
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T val, scope const ref FormatSpec!Char f)
|
|
if (is(T == interface) && (hasToString!(T, Char) || !is(BuiltinTypeOf!T)) && !is(T == enum))
|
|
{
|
|
import std.range.primitives : put;
|
|
|
|
enforceValidFormatSpec!(T, Char)(f);
|
|
if (val is null)
|
|
put(w, "null");
|
|
else
|
|
{
|
|
static if (__traits(hasMember, T, "toString") && isSomeFunction!(val.toString))
|
|
static assert(!__traits(isDisabled, T.toString), T.stringof ~
|
|
" cannot be formatted because its `toString` is marked with `@disable`");
|
|
|
|
static if (hasToString!(T, Char) != HasToStringResult.none)
|
|
{
|
|
formatObject(w, val, f);
|
|
}
|
|
else static if (isInputRange!T)
|
|
{
|
|
formatRange(w, val, f);
|
|
}
|
|
else
|
|
{
|
|
version (Windows)
|
|
{
|
|
import core.sys.windows.com : IUnknown;
|
|
static if (is(T : IUnknown))
|
|
{
|
|
formatValueImpl(w, *cast(void**)&val, f);
|
|
}
|
|
else
|
|
{
|
|
formatValueImpl(w, cast(Object) val, f);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
formatValueImpl(w, cast(Object) val, f);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
import std.range.interfaces : InputRange, inputRangeObject;
|
|
|
|
// interface
|
|
InputRange!int i = inputRangeObject([1,2,3,4]);
|
|
formatTest(i, "[1, 2, 3, 4]");
|
|
assert(i.empty);
|
|
i = null;
|
|
formatTest(i, "null");
|
|
|
|
// interface (downcast to Object)
|
|
interface Whatever {}
|
|
class C : Whatever
|
|
{
|
|
override @property string toString() const { return "ab"; }
|
|
}
|
|
Whatever val = new C;
|
|
formatTest(val, "ab");
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=11175
|
|
version (Windows)
|
|
{
|
|
import core.sys.windows.com : IID, IUnknown;
|
|
import core.sys.windows.windef : HRESULT;
|
|
|
|
interface IUnknown2 : IUnknown { }
|
|
|
|
class D : IUnknown2
|
|
{
|
|
extern(Windows) HRESULT QueryInterface(const(IID)* riid, void** pvObject) { return typeof(return).init; }
|
|
extern(Windows) uint AddRef() { return 0; }
|
|
extern(Windows) uint Release() { return 0; }
|
|
}
|
|
|
|
IUnknown2 d = new D;
|
|
string expected = format("%X", cast(void*) d);
|
|
formatTest(d, expected);
|
|
}
|
|
}
|
|
|
|
// Maybe T is noncopyable struct, so receive it by 'auto ref'.
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, auto ref T val,
|
|
scope const ref FormatSpec!Char f)
|
|
if ((is(T == struct) || is(T == union)) && (hasToString!(T, Char) || !is(BuiltinTypeOf!T))
|
|
&& !is(T == enum))
|
|
{
|
|
import std.range.primitives : put;
|
|
|
|
static if (__traits(hasMember, T, "toString") && isSomeFunction!(val.toString))
|
|
static assert(!__traits(isDisabled, T.toString), T.stringof ~
|
|
" cannot be formatted because its `toString` is marked with `@disable`");
|
|
|
|
enforceValidFormatSpec!(T, Char)(f);
|
|
static if (hasToString!(T, Char))
|
|
{
|
|
formatObject(w, val, f);
|
|
}
|
|
else static if (isInputRange!T)
|
|
{
|
|
formatRange(w, val, f);
|
|
}
|
|
else static if (is(T == struct))
|
|
{
|
|
enum left = T.stringof~"(";
|
|
enum separator = ", ";
|
|
enum right = ")";
|
|
|
|
put(w, left);
|
|
foreach (i, e; val.tupleof)
|
|
{
|
|
static if (__traits(identifier, val.tupleof[i]) == "this")
|
|
continue;
|
|
else static if (0 < i && val.tupleof[i-1].offsetof == val.tupleof[i].offsetof)
|
|
{
|
|
static if (i == val.tupleof.length - 1 || val.tupleof[i].offsetof != val.tupleof[i+1].offsetof)
|
|
put(w, separator~val.tupleof[i].stringof[4 .. $]~"}");
|
|
else
|
|
put(w, separator~val.tupleof[i].stringof[4 .. $]);
|
|
}
|
|
else static if (i+1 < val.tupleof.length && val.tupleof[i].offsetof == val.tupleof[i+1].offsetof)
|
|
put(w, (i > 0 ? separator : "")~"#{overlap "~val.tupleof[i].stringof[4 .. $]);
|
|
else
|
|
{
|
|
static if (i > 0)
|
|
put(w, separator);
|
|
formatElement(w, e, f);
|
|
}
|
|
}
|
|
put(w, right);
|
|
}
|
|
else
|
|
{
|
|
put(w, T.stringof);
|
|
}
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=9588
|
|
@safe pure unittest
|
|
{
|
|
struct S { int x; bool empty() { return false; } }
|
|
formatTest(S(), "S(0)");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=4638
|
|
@safe unittest
|
|
{
|
|
struct U8 { string toString() const { return "blah"; } }
|
|
struct U16 { wstring toString() const { return "blah"; } }
|
|
struct U32 { dstring toString() const { return "blah"; } }
|
|
formatTest(U8(), "blah");
|
|
formatTest(U16(), "blah");
|
|
formatTest(U32(), "blah");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=3890
|
|
@safe unittest
|
|
{
|
|
struct Int{ int n; }
|
|
struct Pair{ string s; Int i; }
|
|
formatTest(Pair("hello", Int(5)),
|
|
`Pair("hello", Int(5))`);
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=9117
|
|
@safe unittest
|
|
{
|
|
import std.format : formattedWrite;
|
|
|
|
static struct Frop {}
|
|
|
|
static struct Foo
|
|
{
|
|
int n = 0;
|
|
alias n this;
|
|
T opCast(T) () if (is(T == Frop))
|
|
{
|
|
return Frop();
|
|
}
|
|
string toString()
|
|
{
|
|
return "Foo";
|
|
}
|
|
}
|
|
|
|
static struct Bar
|
|
{
|
|
Foo foo;
|
|
alias foo this;
|
|
string toString()
|
|
{
|
|
return "Bar";
|
|
}
|
|
}
|
|
|
|
const(char)[] result;
|
|
void put(scope const char[] s) { result ~= s; }
|
|
|
|
Foo foo;
|
|
formattedWrite(&put, "%s", foo); // OK
|
|
assert(result == "Foo");
|
|
|
|
result = null;
|
|
|
|
Bar bar;
|
|
formattedWrite(&put, "%s", bar); // NG
|
|
assert(result == "Bar");
|
|
|
|
result = null;
|
|
|
|
int i = 9;
|
|
formattedWrite(&put, "%s", 9);
|
|
assert(result == "9");
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
// union formatting without toString
|
|
union U1
|
|
{
|
|
int n;
|
|
string s;
|
|
}
|
|
U1 u1;
|
|
formatTest(u1, "U1");
|
|
|
|
// union formatting with toString
|
|
union U2
|
|
{
|
|
int n;
|
|
string s;
|
|
string toString() const { return s; }
|
|
}
|
|
U2 u2;
|
|
u2.s = "hello";
|
|
formatTest(u2, "hello");
|
|
}
|
|
|
|
@system unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : formatValue;
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=7230
|
|
static struct Bug7230
|
|
{
|
|
string s = "hello";
|
|
union {
|
|
string a;
|
|
int b;
|
|
double c;
|
|
}
|
|
long x = 10;
|
|
}
|
|
|
|
Bug7230 bug;
|
|
bug.b = 123;
|
|
|
|
FormatSpec!char f;
|
|
auto w = appender!(char[])();
|
|
formatValue(w, bug, f);
|
|
assert(w.data == `Bug7230("hello", #{overlap a, b, c}, 10)`);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : formatValue;
|
|
|
|
static struct S{ @disable this(this); }
|
|
S s;
|
|
|
|
FormatSpec!char f;
|
|
auto w = appender!string();
|
|
formatValue(w, s, f);
|
|
assert(w.data == "S()");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : formatValue;
|
|
|
|
//struct Foo { @disable string toString(); }
|
|
//Foo foo;
|
|
|
|
interface Bar { @disable string toString(); }
|
|
Bar bar;
|
|
|
|
auto w = appender!(char[])();
|
|
FormatSpec!char f;
|
|
|
|
// NOTE: structs cant be tested : the assertion is correct so compilation
|
|
// continues and fails when trying to link the unimplemented toString.
|
|
//static assert(!__traits(compiles, formatValue(w, foo, f)));
|
|
static assert(!__traits(compiles, formatValue(w, bar, f)));
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=21722
|
|
@system unittest
|
|
{
|
|
struct Bar
|
|
{
|
|
void toString (scope void delegate (scope const(char)[]) sink, string fmt)
|
|
{
|
|
sink("Hello");
|
|
}
|
|
}
|
|
|
|
Bar b;
|
|
assert(format("%b", b) == "Hello");
|
|
|
|
static if (hasPreviewIn)
|
|
{
|
|
struct Foo
|
|
{
|
|
void toString(scope void delegate(in char[]) sink, in FormatSpec!char fmt)
|
|
{
|
|
sink("Hello");
|
|
}
|
|
}
|
|
|
|
Foo f;
|
|
assert(format("%b", f) == "Hello");
|
|
|
|
struct Foo2
|
|
{
|
|
void toString(scope void delegate(in char[]) sink, string fmt)
|
|
{
|
|
sink("Hello");
|
|
}
|
|
}
|
|
|
|
Foo2 f2;
|
|
assert(format("%b", f2) == "Hello");
|
|
}
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : singleSpec;
|
|
|
|
// Bug #17269. Behavior similar to `struct A { Nullable!string B; }`
|
|
struct StringAliasThis
|
|
{
|
|
@property string value() const { assert(0); }
|
|
alias value this;
|
|
string toString() { return "helloworld"; }
|
|
private string _value;
|
|
}
|
|
struct TestContainer
|
|
{
|
|
StringAliasThis testVar;
|
|
}
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%s");
|
|
formatElement(w, TestContainer(), spec);
|
|
|
|
assert(w.data == "TestContainer(helloworld)", w.data);
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=17269
|
|
@safe unittest
|
|
{
|
|
import std.typecons : Nullable;
|
|
|
|
struct Foo
|
|
{
|
|
Nullable!string bar;
|
|
}
|
|
|
|
Foo f;
|
|
formatTest(f, "Foo(Nullable.null)");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=19003
|
|
@safe unittest
|
|
{
|
|
struct S
|
|
{
|
|
int i;
|
|
|
|
@disable this();
|
|
|
|
invariant { assert(this.i); }
|
|
|
|
this(int i) @safe in { assert(i); } do { this.i = i; }
|
|
|
|
string toString() { return "S"; }
|
|
}
|
|
|
|
S s = S(1);
|
|
|
|
format!"%s"(s);
|
|
}
|
|
|
|
void enforceValidFormatSpec(T, Char)(scope const ref FormatSpec!Char f)
|
|
{
|
|
import std.format : enforceFmt;
|
|
import std.range : isInputRange;
|
|
import std.format.internal.write : hasToString, HasToStringResult;
|
|
|
|
enum overload = hasToString!(T, Char);
|
|
static if (
|
|
overload != HasToStringResult.constCharSinkFormatSpec &&
|
|
overload != HasToStringResult.constCharSinkFormatString &&
|
|
overload != HasToStringResult.inCharSinkFormatSpec &&
|
|
overload != HasToStringResult.inCharSinkFormatString &&
|
|
overload != HasToStringResult.customPutWriterFormatSpec &&
|
|
!isInputRange!T)
|
|
{
|
|
enforceFmt(f.spec == 's',
|
|
"Expected '%s' format specifier for type '" ~ T.stringof ~ "'");
|
|
}
|
|
}
|
|
|
|
/*
|
|
`enum`s are formatted like their base value
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, T val, scope const ref FormatSpec!Char f)
|
|
if (is(T == enum))
|
|
{
|
|
import std.array : appender;
|
|
import std.range.primitives : put;
|
|
|
|
if (f.spec == 's')
|
|
{
|
|
foreach (i, e; EnumMembers!T)
|
|
{
|
|
if (val == e)
|
|
{
|
|
formatValueImpl(w, __traits(allMembers, T)[i], f);
|
|
return;
|
|
}
|
|
}
|
|
|
|
auto w2 = appender!string();
|
|
|
|
// val is not a member of T, output cast(T) rawValue instead.
|
|
put(w2, "cast(" ~ T.stringof ~ ")");
|
|
static assert(!is(OriginalType!T == T), "OriginalType!" ~ T.stringof ~
|
|
"must not be equal to " ~ T.stringof);
|
|
|
|
FormatSpec!Char f2 = f;
|
|
f2.width = 0;
|
|
formatValueImpl(w2, cast(OriginalType!T) val, f2);
|
|
writeAligned(w, w2.data, f);
|
|
return;
|
|
}
|
|
formatValueImpl(w, cast(OriginalType!T) val, f);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
enum A { first, second, third }
|
|
formatTest(A.second, "second");
|
|
formatTest(cast(A) 72, "cast(A)72");
|
|
}
|
|
@safe unittest
|
|
{
|
|
enum A : string { one = "uno", two = "dos", three = "tres" }
|
|
formatTest(A.three, "three");
|
|
formatTest(cast(A)"mill\ón", "cast(A)mill\ón");
|
|
}
|
|
@safe unittest
|
|
{
|
|
enum A : bool { no, yes }
|
|
formatTest(A.yes, "yes");
|
|
formatTest(A.no, "no");
|
|
}
|
|
@safe unittest
|
|
{
|
|
// Test for bug 6892
|
|
enum Foo { A = 10 }
|
|
formatTest("%s", Foo.A, "A");
|
|
formatTest(">%4s<", Foo.A, "> A<");
|
|
formatTest("%04d", Foo.A, "0010");
|
|
formatTest("%+2u", Foo.A, "10");
|
|
formatTest("%02x", Foo.A, "0a");
|
|
formatTest("%3o", Foo.A, " 12");
|
|
formatTest("%b", Foo.A, "1010");
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
enum A { one, two, three }
|
|
|
|
string t1 = format("[%6s] [%-6s]", A.one, A.one);
|
|
assert(t1 == "[ one] [one ]");
|
|
string t2 = format("[%10s] [%-10s]", cast(A) 10, cast(A) 10);
|
|
assert(t2 == "[ cast(A)" ~ "10] [cast(A)" ~ "10 ]"); // due to bug in style checker
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=8921
|
|
@safe unittest
|
|
{
|
|
enum E : char { A = 'a', B = 'b', C = 'c' }
|
|
E[3] e = [E.A, E.B, E.C];
|
|
formatTest(e, "[A, B, C]");
|
|
|
|
E[] e2 = [E.A, E.B, E.C];
|
|
formatTest(e2, "[A, B, C]");
|
|
}
|
|
|
|
/*
|
|
Pointers are formatted as hex integers.
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, scope T val, scope const ref FormatSpec!Char f)
|
|
if (isPointer!T && !is(T == enum) && !hasToString!(T, Char))
|
|
{
|
|
static if (is(typeof({ shared const void* p = val; })))
|
|
alias SharedOf(T) = shared(T);
|
|
else
|
|
alias SharedOf(T) = T;
|
|
|
|
const SharedOf!(void*) p = val;
|
|
const pnum = () @trusted { return cast(ulong) p; }();
|
|
|
|
if (f.spec == 's')
|
|
{
|
|
if (p is null)
|
|
{
|
|
writeAligned(w, "null", f);
|
|
return;
|
|
}
|
|
FormatSpec!Char fs = f; // fs is copy for change its values.
|
|
fs.spec = 'X';
|
|
formatValueImpl(w, pnum, fs);
|
|
}
|
|
else
|
|
{
|
|
import std.format : enforceFmt;
|
|
enforceFmt(f.spec == 'X' || f.spec == 'x',
|
|
"Expected one of %s, %x or %X for pointer type.");
|
|
formatValueImpl(w, pnum, f);
|
|
}
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
int* p;
|
|
|
|
string t1 = format("[%6s] [%-6s]", p, p);
|
|
assert(t1 == "[ null] [null ]");
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
int* p = null;
|
|
formatTest(p, "null");
|
|
|
|
auto q = () @trusted { return cast(void*) 0xFFEECCAA; }();
|
|
formatTest(q, "FFEECCAA");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=11782
|
|
@safe pure unittest
|
|
{
|
|
import std.range : iota;
|
|
|
|
auto a = iota(0, 10);
|
|
auto b = iota(0, 10);
|
|
auto p = () @trusted { auto p = &a; return p; }();
|
|
|
|
assert(format("%s",p) != format("%s",b));
|
|
}
|
|
|
|
@system pure unittest
|
|
{
|
|
// Test for https://issues.dlang.org/show_bug.cgi?id=7869
|
|
struct S
|
|
{
|
|
string toString() const { return ""; }
|
|
}
|
|
S* p = null;
|
|
formatTest(p, "null");
|
|
|
|
S* q = cast(S*) 0xFFEECCAA;
|
|
formatTest(q, "FFEECCAA");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=8186
|
|
@system unittest
|
|
{
|
|
class B
|
|
{
|
|
int* a;
|
|
this() { a = new int; }
|
|
alias a this;
|
|
}
|
|
formatTest(B.init, "null");
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=9336
|
|
@system pure unittest
|
|
{
|
|
shared int i;
|
|
format("%s", &i);
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=11778
|
|
@system pure unittest
|
|
{
|
|
import std.exception : assertThrown;
|
|
import std.format : FormatException;
|
|
|
|
int* p = null;
|
|
assertThrown!FormatException(format("%d", p));
|
|
assertThrown!FormatException(format("%04d", p + 2));
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=12505
|
|
@safe pure unittest
|
|
{
|
|
void* p = null;
|
|
formatTest("%08X", p, "00000000");
|
|
}
|
|
|
|
/*
|
|
SIMD vectors are formatted as arrays.
|
|
*/
|
|
void formatValueImpl(Writer, V, Char)(auto ref Writer w, V val, scope const ref FormatSpec!Char f)
|
|
if (isSIMDVector!V)
|
|
{
|
|
formatValueImpl(w, val.array, f);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import core.simd; // cannot be selective, because float4 might not be defined
|
|
|
|
static if (is(float4))
|
|
{
|
|
version (X86)
|
|
{
|
|
version (OSX) {/* https://issues.dlang.org/show_bug.cgi?id=17823 */}
|
|
}
|
|
else
|
|
{
|
|
float4 f;
|
|
f.array[0] = 1;
|
|
f.array[1] = 2;
|
|
f.array[2] = 3;
|
|
f.array[3] = 4;
|
|
formatTest(f, "[1, 2, 3, 4]");
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
Delegates are formatted by `ReturnType delegate(Parameters) FunctionAttributes`
|
|
|
|
Known bug: Because of issue https://issues.dlang.org/show_bug.cgi?id=18269
|
|
the FunctionAttributes might be wrong.
|
|
*/
|
|
void formatValueImpl(Writer, T, Char)(auto ref Writer w, scope T, scope const ref FormatSpec!Char f)
|
|
if (isDelegate!T)
|
|
{
|
|
formatValueImpl(w, T.stringof, f);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : formatValue;
|
|
|
|
void func() @system { __gshared int x; ++x; throw new Exception("msg"); }
|
|
version (linux)
|
|
{
|
|
FormatSpec!char f;
|
|
auto w = appender!string();
|
|
formatValue(w, &func, f);
|
|
assert(w.data.length >= 15 && w.data[0 .. 15] == "void delegate()");
|
|
}
|
|
}
|
|
|
|
// string elements are formatted like UTF-8 string literals.
|
|
void formatElement(Writer, T, Char)(auto ref Writer w, T val, scope const ref FormatSpec!Char f)
|
|
if (is(StringTypeOf!T) && !hasToString!(T, Char) && !is(T == enum))
|
|
{
|
|
import std.array : appender;
|
|
import std.format.write : formattedWrite, formatValue;
|
|
import std.range.primitives : put;
|
|
import std.utf : decode, UTFException;
|
|
|
|
StringTypeOf!T str = val; // https://issues.dlang.org/show_bug.cgi?id=8015
|
|
|
|
if (f.spec == 's')
|
|
{
|
|
try
|
|
{
|
|
// ignore other specifications and quote
|
|
for (size_t i = 0; i < str.length; )
|
|
{
|
|
auto c = decode(str, i);
|
|
// \uFFFE and \uFFFF are considered valid by isValidDchar,
|
|
// so need checking for interchange.
|
|
if (c == 0xFFFE || c == 0xFFFF)
|
|
goto LinvalidSeq;
|
|
}
|
|
put(w, '\"');
|
|
for (size_t i = 0; i < str.length; )
|
|
{
|
|
auto c = decode(str, i);
|
|
formatChar(w, c, '"');
|
|
}
|
|
put(w, '\"');
|
|
return;
|
|
}
|
|
catch (UTFException)
|
|
{
|
|
}
|
|
|
|
// If val contains invalid UTF sequence, formatted like HexString literal
|
|
LinvalidSeq:
|
|
static if (is(typeof(str[0]) : const(char)))
|
|
{
|
|
enum type = "";
|
|
alias IntArr = const(ubyte)[];
|
|
}
|
|
else static if (is(typeof(str[0]) : const(wchar)))
|
|
{
|
|
enum type = "w";
|
|
alias IntArr = const(ushort)[];
|
|
}
|
|
else static if (is(typeof(str[0]) : const(dchar)))
|
|
{
|
|
enum type = "d";
|
|
alias IntArr = const(uint)[];
|
|
}
|
|
formattedWrite(w, "[%(cast(" ~ type ~ "char) 0x%X%|, %)]", cast(IntArr) str);
|
|
}
|
|
else
|
|
formatValue(w, str, f);
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format.spec : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%s");
|
|
formatElement(w, "Hello World", spec);
|
|
|
|
assert(w.data == "\"Hello World\"");
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format.spec : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%s");
|
|
formatElement(w, "H", spec);
|
|
|
|
assert(w.data == "\"H\"", w.data);
|
|
}
|
|
|
|
// https://issues.dlang.org/show_bug.cgi?id=15888
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format.spec : singleSpec;
|
|
|
|
ushort[] a = [0xFF_FE, 0x42];
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%s");
|
|
formatElement(w, cast(wchar[]) a, spec);
|
|
assert(w.data == `[cast(wchar) 0xFFFE, cast(wchar) 0x42]`);
|
|
|
|
uint[] b = [0x0F_FF_FF_FF, 0x42];
|
|
w = appender!string();
|
|
spec = singleSpec("%s");
|
|
formatElement(w, cast(dchar[]) b, spec);
|
|
assert(w.data == `[cast(dchar) 0xFFFFFFF, cast(dchar) 0x42]`);
|
|
}
|
|
|
|
// Character elements are formatted like UTF-8 character literals.
|
|
void formatElement(Writer, T, Char)(auto ref Writer w, T val, scope const ref FormatSpec!Char f)
|
|
if (is(CharTypeOf!T) && !is(T == enum))
|
|
{
|
|
import std.range.primitives : put;
|
|
import std.format.write : formatValue;
|
|
|
|
if (f.spec == 's')
|
|
{
|
|
put(w, '\'');
|
|
formatChar(w, val, '\'');
|
|
put(w, '\'');
|
|
}
|
|
else
|
|
formatValue(w, val, f);
|
|
}
|
|
|
|
// Maybe T is noncopyable struct, so receive it by 'auto ref'.
|
|
void formatElement(Writer, T, Char)(auto ref Writer w, auto ref T val, scope const ref FormatSpec!Char f)
|
|
if ((!is(StringTypeOf!T) || hasToString!(T, Char)) && !is(CharTypeOf!T) || is(T == enum))
|
|
{
|
|
import std.format.write : formatValue;
|
|
|
|
formatValue(w, val, f);
|
|
}
|
|
|
|
// Fix for https://issues.dlang.org/show_bug.cgi?id=1591
|
|
int getNthInt(string kind, A...)(uint index, A args)
|
|
{
|
|
return getNth!(kind, isIntegral,int)(index, args);
|
|
}
|
|
|
|
T getNth(string kind, alias Condition, T, A...)(uint index, A args)
|
|
{
|
|
import std.conv : text, to;
|
|
import std.format : FormatException;
|
|
|
|
switch (index)
|
|
{
|
|
foreach (n, _; A)
|
|
{
|
|
case n:
|
|
static if (Condition!(typeof(args[n])))
|
|
{
|
|
return to!T(args[n]);
|
|
}
|
|
else
|
|
{
|
|
throw new FormatException(
|
|
text(kind, " expected, not ", typeof(args[n]).stringof,
|
|
" for argument #", index + 1));
|
|
}
|
|
}
|
|
default:
|
|
throw new FormatException(text("Missing ", kind, " argument"));
|
|
}
|
|
}
|
|
|
|
private bool needToSwapEndianess(Char)(scope const ref FormatSpec!Char f)
|
|
{
|
|
import std.system : endian, Endian;
|
|
|
|
return endian == Endian.littleEndian && f.flPlus
|
|
|| endian == Endian.bigEndian && f.flDash;
|
|
}
|
|
|
|
void writeAligned(Writer, T, Char)(auto ref Writer w, T s, scope const ref FormatSpec!Char f)
|
|
if (isSomeString!T)
|
|
{
|
|
FormatSpec!Char fs = f;
|
|
fs.flZero = false;
|
|
writeAligned(w, "", "", s, fs);
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%s");
|
|
writeAligned(w, "a本Ä", spec);
|
|
assert(w.data == "a本Ä", w.data);
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%10s");
|
|
writeAligned(w, "a本Ä", spec);
|
|
assert(w.data == " a本Ä", "|" ~ w.data ~ "|");
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%-10s");
|
|
writeAligned(w, "a本Ä", spec);
|
|
assert(w.data == "a本Ä ", w.data);
|
|
}
|
|
|
|
enum PrecisionType
|
|
{
|
|
none,
|
|
integer,
|
|
fractionalDigits,
|
|
allDigits,
|
|
}
|
|
|
|
void writeAligned(Writer, T1, T2, T3, Char)(auto ref Writer w,
|
|
T1 prefix, T2 grouped, T3 suffix, scope const ref FormatSpec!Char f,
|
|
bool integer_precision = false)
|
|
if (isSomeString!T1 && isSomeString!T2 && isSomeString!T3)
|
|
{
|
|
writeAligned(w, prefix, grouped, "", suffix, f,
|
|
integer_precision ? PrecisionType.integer : PrecisionType.none);
|
|
}
|
|
|
|
void writeAligned(Writer, T1, T2, T3, T4, Char)(auto ref Writer w,
|
|
T1 prefix, T2 grouped, T3 fracts, T4 suffix, scope const ref FormatSpec!Char f,
|
|
PrecisionType p = PrecisionType.none)
|
|
if (isSomeString!T1 && isSomeString!T2 && isSomeString!T3 && isSomeString!T4)
|
|
{
|
|
// writes: left padding, prefix, leading zeros, grouped, fracts, suffix, right padding
|
|
|
|
if (p == PrecisionType.integer && f.precision == f.UNSPECIFIED)
|
|
p = PrecisionType.none;
|
|
|
|
import std.range.primitives : put;
|
|
|
|
long prefixWidth;
|
|
long groupedWidth = grouped.length; // TODO: does not take graphemes into account
|
|
long fractsWidth = fracts.length; // TODO: does not take graphemes into account
|
|
long suffixWidth;
|
|
|
|
// TODO: remove this workaround which hides issue 21815
|
|
if (f.width > 0)
|
|
{
|
|
prefixWidth = getWidth(prefix);
|
|
suffixWidth = getWidth(suffix);
|
|
}
|
|
|
|
auto doGrouping = f.flSeparator && groupedWidth > 0
|
|
&& f.separators > 0 && f.separators != f.UNSPECIFIED;
|
|
// front = number of symbols left of the leftmost separator
|
|
long front = doGrouping ? (groupedWidth - 1) % f.separators + 1 : 0;
|
|
// sepCount = number of separators to be inserted
|
|
long sepCount = doGrouping ? (groupedWidth - 1) / f.separators : 0;
|
|
|
|
long trailingZeros = 0;
|
|
if (p == PrecisionType.fractionalDigits)
|
|
trailingZeros = f.precision - (fractsWidth - 1);
|
|
if (p == PrecisionType.allDigits && f.flHash)
|
|
{
|
|
if (grouped != "0")
|
|
trailingZeros = f.precision - (fractsWidth - 1) - groupedWidth;
|
|
else
|
|
{
|
|
trailingZeros = f.precision - fractsWidth;
|
|
foreach (i;0 .. fracts.length)
|
|
if (fracts[i] != '0' && fracts[i] != '.')
|
|
{
|
|
trailingZeros = f.precision - (fracts.length - i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
auto nodot = fracts == "." && trailingZeros == 0 && !f.flHash;
|
|
|
|
if (nodot) fractsWidth = 0;
|
|
|
|
long width = prefixWidth + sepCount + groupedWidth + fractsWidth + trailingZeros + suffixWidth;
|
|
long delta = f.width - width;
|
|
|
|
// with integers, precision is considered the minimum number of digits;
|
|
// if digits are missing, we have to recalculate everything
|
|
long pregrouped = 0;
|
|
if (p == PrecisionType.integer && groupedWidth < f.precision)
|
|
{
|
|
pregrouped = f.precision - groupedWidth;
|
|
delta -= pregrouped;
|
|
if (doGrouping)
|
|
{
|
|
front = ((front - 1) + pregrouped) % f.separators + 1;
|
|
delta -= (f.precision - 1) / f.separators - sepCount;
|
|
}
|
|
}
|
|
|
|
// left padding
|
|
if ((!f.flZero || p == PrecisionType.integer) && delta > 0)
|
|
{
|
|
if (f.flEqual)
|
|
{
|
|
foreach (i ; 0 .. delta / 2 + ((delta % 2 == 1 && !f.flDash) ? 1 : 0))
|
|
put(w, ' ');
|
|
}
|
|
else if (!f.flDash)
|
|
{
|
|
foreach (i ; 0 .. delta)
|
|
put(w, ' ');
|
|
}
|
|
}
|
|
|
|
// prefix
|
|
put(w, prefix);
|
|
|
|
// leading grouped zeros
|
|
if (f.flZero && p != PrecisionType.integer && !f.flDash && delta > 0)
|
|
{
|
|
if (doGrouping)
|
|
{
|
|
// front2 and sepCount2 are the same as above for the leading zeros
|
|
long front2 = (delta + front - 1) % (f.separators + 1) + 1;
|
|
long sepCount2 = (delta + front - 1) / (f.separators + 1);
|
|
delta -= sepCount2;
|
|
|
|
// according to POSIX: if the first symbol is a separator,
|
|
// an additional zero is put left of it, even if that means, that
|
|
// the total width is one more then specified
|
|
if (front2 > f.separators) { front2 = 1; }
|
|
|
|
foreach (i ; 0 .. delta)
|
|
{
|
|
if (front2 == 0)
|
|
{
|
|
put(w, f.separatorChar);
|
|
front2 = f.separators;
|
|
}
|
|
front2--;
|
|
|
|
put(w, '0');
|
|
}
|
|
|
|
// separator between zeros and grouped
|
|
if (front == f.separators)
|
|
put(w, f.separatorChar);
|
|
}
|
|
else
|
|
foreach (i ; 0 .. delta)
|
|
put(w, '0');
|
|
}
|
|
|
|
// grouped content
|
|
if (doGrouping)
|
|
{
|
|
// TODO: this does not take graphemes into account
|
|
foreach (i;0 .. pregrouped + grouped.length)
|
|
{
|
|
if (front == 0)
|
|
{
|
|
put(w, f.separatorChar);
|
|
front = f.separators;
|
|
}
|
|
front--;
|
|
|
|
put(w, i < pregrouped ? '0' : grouped[cast(size_t) (i - pregrouped)]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
foreach (i;0 .. pregrouped)
|
|
put(w, '0');
|
|
put(w, grouped);
|
|
}
|
|
|
|
// fracts
|
|
if (!nodot)
|
|
put(w, fracts);
|
|
|
|
// trailing zeros
|
|
foreach (i ; 0 .. trailingZeros)
|
|
put(w, '0');
|
|
|
|
// suffix
|
|
put(w, suffix);
|
|
|
|
// right padding
|
|
if (delta > 0)
|
|
{
|
|
if (f.flEqual)
|
|
{
|
|
foreach (i ; 0 .. delta / 2 + ((delta % 2 == 1 && f.flDash) ? 1 : 0))
|
|
put(w, ' ');
|
|
}
|
|
else if (f.flDash)
|
|
{
|
|
foreach (i ; 0 .. delta)
|
|
put(w, ' ');
|
|
}
|
|
}
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pregroupingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%20s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == " pregroupingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%-20s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pregroupingsuf ", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%020s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre000000groupingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%-020s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pregroupingsuf ", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%20,1s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "preg,r,o,u,p,i,n,gsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%20,2s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == " pregr,ou,pi,ngsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%20,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == " pregr,oup,ingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%20,10s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == " pregroupingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%020,1s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "preg,r,o,u,p,i,n,gsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%020,2s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre00,gr,ou,pi,ngsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%020,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre00,0gr,oup,ingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%020,10s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre000,00groupingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%021,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre000,0gr,oup,ingsuf", w.data);
|
|
|
|
// According to https://github.com/dlang/phobos/pull/7112 this
|
|
// is defined by POSIX standard:
|
|
w = appender!string();
|
|
spec = singleSpec("%022,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre0,000,0gr,oup,ingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%023,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pre0,000,0gr,oup,ingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec);
|
|
assert(w.data == "pregr,oup,ingsuf", w.data);
|
|
}
|
|
|
|
@safe pure unittest
|
|
{
|
|
import std.array : appender;
|
|
import std.format : singleSpec;
|
|
|
|
auto w = appender!string();
|
|
auto spec = singleSpec("%.10s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec, true);
|
|
assert(w.data == "pre00groupingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%.10,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec, true);
|
|
assert(w.data == "pre0,0gr,oup,ingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%25.10,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec, true);
|
|
assert(w.data == " pre0,0gr,oup,ingsuf", w.data);
|
|
|
|
// precision has precedence over zero flag
|
|
w = appender!string();
|
|
spec = singleSpec("%025.12,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec, true);
|
|
assert(w.data == " pre000,0gr,oup,ingsuf", w.data);
|
|
|
|
w = appender!string();
|
|
spec = singleSpec("%025.13,3s");
|
|
writeAligned(w, "pre", "grouping", "suf", spec, true);
|
|
assert(w.data == " pre0,000,0gr,oup,ingsuf", w.data);
|
|
}
|
|
|
|
@safe unittest
|
|
{
|
|
assert(format("%,d", 1000) == "1,000");
|
|
assert(format("%,f", 1234567.891011) == "1,234,567.891011");
|
|
assert(format("%,?d", '?', 1000) == "1?000");
|
|
assert(format("%,1d", 1000) == "1,0,0,0", format("%,1d", 1000));
|
|
assert(format("%,*d", 4, -12345) == "-1,2345");
|
|
assert(format("%,*?d", 4, '_', -12345) == "-1_2345");
|
|
assert(format("%,6?d", '_', -12345678) == "-12_345678");
|
|
assert(format("%12,3.3f", 1234.5678) == " 1,234.568", "'" ~
|
|
format("%12,3.3f", 1234.5678) ~ "'");
|
|
}
|
|
|
|
private long getWidth(T)(T s)
|
|
{
|
|
import std.algorithm.searching : all;
|
|
import std.uni : graphemeStride;
|
|
|
|
// check for non-ascii character
|
|
if (s.all!(a => a <= 0x7F)) return s.length;
|
|
|
|
//TODO: optimize this
|
|
long width = 0;
|
|
for (size_t i; i < s.length; i += graphemeStride(s, i))
|
|
++width;
|
|
return width;
|
|
}
|
|
|
|
version (StdUnittest)
|
|
private void formatTest(T)(T val, string expected, size_t ln = __LINE__, string fn = __FILE__)
|
|
{
|
|
formatTest(val, [expected], ln, fn);
|
|
}
|
|
|
|
version (StdUnittest)
|
|
private void formatTest(T)(string fmt, T val, string expected, size_t ln = __LINE__, string fn = __FILE__) @safe
|
|
{
|
|
formatTest(fmt, val, [expected], ln, fn);
|
|
}
|
|
|
|
version (StdUnittest)
|
|
private void formatTest(T)(T val, string[] expected, size_t ln = __LINE__, string fn = __FILE__)
|
|
{
|
|
import core.exception : AssertError;
|
|
import std.algorithm.searching : canFind;
|
|
import std.array : appender;
|
|
import std.conv : text;
|
|
import std.exception : enforce;
|
|
import std.format.write : formatValue;
|
|
|
|
FormatSpec!char f;
|
|
auto w = appender!string();
|
|
formatValue(w, val, f);
|
|
enforce!AssertError(expected.canFind(w.data),
|
|
text("expected one of `", expected, "`, result = `", w.data, "`"), fn, ln);
|
|
}
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version (StdUnittest)
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private void formatTest(T)(string fmt, T val, string[] expected, size_t ln = __LINE__, string fn = __FILE__) @safe
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{
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import core.exception : AssertError;
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import std.algorithm.searching : canFind;
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import std.array : appender;
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import std.conv : text;
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import std.exception : enforce;
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import std.format.write : formattedWrite;
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|
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auto w = appender!string();
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formattedWrite(w, fmt, val);
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enforce!AssertError(expected.canFind(w.data),
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text("expected one of `", expected, "`, result = `", w.data, "`"), fn, ln);
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}
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