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doc.d
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/**
* Ddoc documentation generation.
*
* Specification: $(LINK2 https://dlang.org/spec/ddoc.html, Documentation Generator)
*
* Copyright: Copyright (C) 1999-2025 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 https://www.digitalmars.com, Walter Bright)
* License: $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/compiler/src/dmd/doc.d, _doc.d)
* Documentation: https://dlang.org/phobos/dmd_doc.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/compiler/src/dmd/doc.d
*/
module dmd.doc;
import core.stdc.ctype;
import core.stdc.stdlib;
import core.stdc.stdio;
import core.stdc.string;
import core.stdc.time;
import dmd.aggregate;
import dmd.arraytypes;
import dmd.astenums;
import dmd.attrib;
import dmd.cond;
import dmd.dclass;
import dmd.declaration;
import dmd.denum;
import dmd.dimport;
import dmd.dmacro;
import dmd.dmodule;
import dmd.dscope;
import dmd.dstruct;
import dmd.dsymbol;
import dmd.dsymbolsem;
import dmd.dtemplate;
import dmd.errorsink;
import dmd.func;
import dmd.globals;
import dmd.hdrgen;
import dmd.id;
import dmd.identifier;
import dmd.lexer;
import dmd.location;
import dmd.mtype;
import dmd.root.array;
import dmd.root.file;
import dmd.root.filename;
import dmd.common.outbuffer;
import dmd.root.port;
import dmd.root.rmem;
import dmd.root.string;
import dmd.root.utf;
import dmd.tokens;
import dmd.visitor;
private:
public
struct Escape
{
const(char)[][char.max] strings;
/***************************************
* Find character string to replace c with.
*/
const(char)[] escapeChar(char c) @safe
{
version (all)
{
//printf("escapeChar('%c') => %p, %p\n", c, strings, strings[c].ptr);
return strings[c];
}
else
{
const(char)[] s;
switch (c)
{
case '<':
s = "<";
break;
case '>':
s = ">";
break;
case '&':
s = "&";
break;
default:
s = null;
break;
}
return s;
}
}
}
/***********************************************************
*/
class Section
{
const(char)[] name;
const(char)[] body_;
int nooutput;
override string toString() const
{
assert(0);
}
void write(Loc loc, DocComment* dc, Scope* sc, Dsymbols* a, ref OutBuffer buf)
{
assert(a.length);
if (name.length)
{
static immutable table =
[
"AUTHORS",
"BUGS",
"COPYRIGHT",
"DATE",
"DEPRECATED",
"EXAMPLES",
"HISTORY",
"LICENSE",
"RETURNS",
"SEE_ALSO",
"STANDARDS",
"THROWS",
"VERSION",
];
foreach (entry; table)
{
if (iequals(entry, name))
{
buf.printf("$(DDOC_%s ", entry.ptr);
goto L1;
}
}
buf.writestring("$(DDOC_SECTION ");
// Replace _ characters with spaces
buf.writestring("$(DDOC_SECTION_H ");
size_t o = buf.length;
foreach (char c; name)
buf.writeByte((c == '_') ? ' ' : c);
escapeStrayParenthesis(loc, buf, o, false, sc.eSink);
buf.writestring(")");
}
else
{
buf.writestring("$(DDOC_DESCRIPTION ");
}
L1:
size_t o = buf.length;
buf.write(body_);
escapeStrayParenthesis(loc, buf, o, true, sc.eSink);
highlightText(sc, a, loc, buf, o);
buf.writestring(")");
}
}
/***********************************************************
*/
final class ParamSection : Section
{
override void write(Loc loc, DocComment* dc, Scope* sc, Dsymbols* a, ref OutBuffer buf)
{
assert(a.length);
Dsymbol s = (*a)[0]; // test
const(char)* p = body_.ptr;
size_t len = body_.length;
const(char)* pend = p + len;
const(char)* tempstart = null;
size_t templen = 0;
const(char)* namestart = null;
size_t namelen = 0; // !=0 if line continuation
const(char)* textstart = null;
size_t textlen = 0;
size_t paramcount = 0;
buf.writestring("$(DDOC_PARAMS ");
while (p < pend)
{
// Skip to start of macro
while (1)
{
switch (*p)
{
case ' ':
case '\t':
p++;
continue;
case '\n':
p++;
goto Lcont;
default:
if (isIdStart(p) || isCVariadicArg(p[0 .. cast(size_t)(pend - p)]))
break;
if (namelen)
goto Ltext;
// continuation of prev macro
goto Lskipline;
}
break;
}
tempstart = p;
while (isIdTail(p))
p += utfStride(p);
if (isCVariadicArg(p[0 .. cast(size_t)(pend - p)]))
p += 3;
templen = p - tempstart;
while (*p == ' ' || *p == '\t')
p++;
if (*p != '=')
{
if (namelen)
goto Ltext;
// continuation of prev macro
goto Lskipline;
}
p++;
if (namelen)
{
// Output existing param
L1:
//printf("param '%.*s' = '%.*s'\n", cast(int)namelen, namestart, cast(int)textlen, textstart);
++paramcount;
HdrGenState hgs;
buf.writestring("$(DDOC_PARAM_ROW ");
{
buf.writestring("$(DDOC_PARAM_ID ");
{
size_t o = buf.length;
Parameter fparam = isFunctionParameter(a, namestart[0 .. namelen]);
if (!fparam)
{
// Comments on a template might refer to function parameters within.
// Search the parameters of nested eponymous functions (with the same name.)
fparam = isEponymousFunctionParameter(a, namestart[0 .. namelen]);
}
bool isCVariadic = isCVariadicParameter(a, namestart[0 .. namelen]);
if (isCVariadic)
{
buf.writestring("...");
}
else if (fparam && fparam.type && fparam.ident)
{
toCBuffer(fparam.type, buf, fparam.ident, hgs);
}
else
{
if (isTemplateParameter(a, namestart, namelen))
{
// 10236: Don't count template parameters for params check
--paramcount;
}
else if (!fparam)
{
sc.eSink.warning(s.loc, "Ddoc: function declaration has no parameter '%.*s'", cast(int)namelen, namestart);
}
buf.write(namestart[0 .. namelen]);
}
escapeStrayParenthesis(loc, buf, o, true, sc.eSink);
highlightCode(sc, a, buf, o);
}
buf.writestring(")");
buf.writestring("$(DDOC_PARAM_DESC ");
{
size_t o = buf.length;
buf.write(textstart[0 .. textlen]);
escapeStrayParenthesis(loc, buf, o, true, sc.eSink);
highlightText(sc, a, loc, buf, o);
}
buf.writestring(")");
}
buf.writestring(")");
namelen = 0;
if (p >= pend)
break;
}
namestart = tempstart;
namelen = templen;
while (*p == ' ' || *p == '\t')
p++;
textstart = p;
Ltext:
while (*p != '\n')
p++;
textlen = p - textstart;
p++;
Lcont:
continue;
Lskipline:
// Ignore this line
while (*p++ != '\n')
{
}
}
if (namelen)
goto L1;
// write out last one
buf.writestring(")");
TypeFunction tf = a.length == 1 ? isTypeFunction(s) : null;
if (tf)
{
size_t pcount = (tf.parameterList.parameters ? tf.parameterList.parameters.length : 0) +
cast(int)(tf.parameterList.varargs == VarArg.variadic);
if (pcount != paramcount)
{
sc.eSink.warning(s.loc, "Ddoc: parameter count mismatch, expected %llu, got %llu",
cast(ulong) pcount, cast(ulong) paramcount);
if (paramcount == 0)
{
// Chances are someone messed up the format
sc.eSink.warningSupplemental(s.loc, "Note that the format is `param = description`");
}
}
}
}
}
/***********************************************************
*/
final class MacroSection : Section
{
override void write(Loc loc, DocComment* dc, Scope* sc, Dsymbols* a, ref OutBuffer buf)
{
//printf("MacroSection::write()\n");
DocComment.parseMacros(dc.escapetable, *dc.pmacrotable, body_);
}
}
alias Sections = Array!(Section);
// Workaround for missing Parameter instance for variadic params. (it's unnecessary to instantiate one).
bool isCVariadicParameter(Dsymbols* a, const(char)[] p) @safe
{
foreach (member; *a)
{
TypeFunction tf = isTypeFunction(member);
if (tf && tf.parameterList.varargs == VarArg.variadic && p == "...")
return true;
}
return false;
}
Dsymbol getEponymousMember(TemplateDeclaration td) @safe
{
if (!td.onemember)
return null;
if (AggregateDeclaration ad = td.onemember.isAggregateDeclaration())
return ad;
if (FuncDeclaration fd = td.onemember.isFuncDeclaration())
return fd;
if (auto em = td.onemember.isEnumMember())
return null; // Keep backward compatibility. See compilable/ddoc9.d
if (VarDeclaration vd = td.onemember.isVarDeclaration())
return td.constraint ? null : vd;
return null;
}
TemplateDeclaration getEponymousParent(Dsymbol s) @safe
{
if (!s.parent)
return null;
TemplateDeclaration td = s.parent.isTemplateDeclaration();
return (td && getEponymousMember(td)) ? td : null;
}
immutable ddoc_default = import("default_ddoc_theme." ~ ddoc_ext);
immutable ddoc_decl_s = "$(DDOC_DECL ";
immutable ddoc_decl_e = ")\n";
immutable ddoc_decl_dd_s = "$(DDOC_DECL_DD ";
immutable ddoc_decl_dd_e = ")\n";
/****************************************************
* Generate Ddoc file for Module m.
* Params:
* m = Module
* ddoctext_ptr = combined text of .ddoc files for macro definitions
* ddoctext_length = extant of ddoctext_ptr
* datetime = charz returned by ctime()
* eSink = send error messages to eSink
* outbuf = append the Ddoc text to this
*/
public
void gendocfile(Module m, const char* ddoctext_ptr, size_t ddoctext_length, const char* datetime, ErrorSink eSink, ref OutBuffer outbuf)
{
gendocfile(m, ddoctext_ptr[0 .. ddoctext_length], datetime, eSink, outbuf);
}
/****************************************************
* Generate Ddoc text for Module `m` and append it to `outbuf`.
* Params:
* m = Module
* ddoctext = combined text of .ddoc files for macro definitions
* datetime = charz returned by ctime()
* eSink = send error messages to eSink
* outbuf = append the Ddoc text to this
*/
public
void gendocfile(Module m, const char[] ddoctext, const char* datetime, ErrorSink eSink, ref OutBuffer outbuf)
{
version (IN_LLVM)
{
m.checkAndAddOutputFile(m.docfile);
}
// Load internal default macros first
DocComment.parseMacros(m.escapetable, m.macrotable, ddoc_default[]);
// Ddoc files override default macros
DocComment.parseMacros(m.escapetable, m.macrotable, ddoctext);
Scope* sc = Scope.createGlobal(m, eSink); // create root scope
DocComment* dc = DocComment.parse(m, m.comment);
dc.pmacrotable = &m.macrotable;
dc.escapetable = m.escapetable;
sc.lastdc = dc;
// Generate predefined macros
// Set the title to be the name of the module
{
const p = m.toPrettyChars().toDString;
m.macrotable.define("TITLE", p);
}
// Set time macros
m.macrotable.define("DATETIME", datetime[0 .. 26]);
m.macrotable.define("YEAR", datetime[20 .. 20 + 4]);
const srcfilename = m.srcfile.toString();
m.macrotable.define("SRCFILENAME", srcfilename);
const docfilename = m.docfile.toString();
m.macrotable.define("DOCFILENAME", docfilename);
if (dc.copyright)
{
dc.copyright.nooutput = 1;
m.macrotable.define("COPYRIGHT", dc.copyright.body_);
}
OutBuffer buf;
if (m.filetype == FileType.ddoc)
{
Loc loc = m.md ? m.md.loc : m.loc;
size_t commentlen = m.comment ? strlen(cast(char*)m.comment) : 0;
Dsymbols a;
// https://issues.dlang.org/show_bug.cgi?id=9764
// Don't push m in a, to prevent emphasize ddoc file name.
if (dc.macros)
{
commentlen = dc.macros.name.ptr - m.comment;
dc.macros.write(loc, dc, sc, &a, buf);
}
buf.write(m.comment[0 .. commentlen]);
highlightText(sc, &a, loc, buf, 0);
}
else
{
Dsymbols a;
a.push(m);
dc.writeSections(sc, &a, buf);
emitMemberComments(m, buf, sc);
}
//printf("BODY= '%.*s'\n", cast(int)buf.length, buf.data);
m.macrotable.define("BODY", buf[]);
OutBuffer buf2;
buf2.writestring("$(DDOC)");
size_t end = buf2.length;
// Expand buf in place with macro expansions
const success = m.macrotable.expand(buf2, 0, end, null, global.recursionLimit, &isIdStart, &isIdTail);
if (!success)
eSink.error(Loc.initial, "DDoc macro expansion limit exceeded; more than %d expansions.", global.recursionLimit);
/* Remove all the escape sequences from buf,
* and make CR-LF the newline.
*/
const slice = buf2[];
outbuf.reserve(slice.length);
auto p = slice.ptr;
for (size_t j = 0; j < slice.length; j++)
{
const c = p[j];
if (c == 0xFF && j + 1 < slice.length)
{
j++;
continue;
}
if (c == '\n')
outbuf.writeByte('\r');
else if (c == '\r')
{
outbuf.writestring("\r\n");
if (j + 1 < slice.length && p[j + 1] == '\n')
{
j++;
}
continue;
}
outbuf.writeByte(c);
}
}
/****************************************************
* Having unmatched parentheses can hose the output of Ddoc,
* as the macros depend on properly nested parentheses.
* This function replaces all ( with $(LPAREN) and ) with $(RPAREN)
* to preserve text literally. This also means macros in the
* text won't be expanded.
*/
public
void escapeDdocString(ref OutBuffer buf, size_t start)
{
for (size_t u = start; u < buf.length; u++)
{
const c = buf[u];
switch (c)
{
case '$':
buf.remove(u, 1);
buf.insert(u, "$(DOLLAR)");
u += 8;
break;
case '(':
buf.remove(u, 1); //remove the (
buf.insert(u, "$(LPAREN)"); //insert this instead
u += 8; //skip over newly inserted macro
break;
case ')':
buf.remove(u, 1); //remove the )
buf.insert(u, "$(RPAREN)"); //insert this instead
u += 8; //skip over newly inserted macro
break;
default:
break;
}
}
}
/****************************************************
* Having unmatched parentheses can hose the output of Ddoc,
* as the macros depend on properly nested parentheses.
*
* Fix by replacing unmatched ( with $(LPAREN) and unmatched ) with $(RPAREN).
*
* Params:
* loc = source location of start of text. It is a mutable copy to allow incrementing its linenum, for printing the correct line number when an error is encountered in a multiline block of ddoc.
* buf = an OutBuffer containing the DDoc
* start = the index within buf to start replacing unmatched parentheses
* respectBackslashEscapes = if true, always replace parentheses that are
* directly preceeded by a backslash with $(LPAREN) or $(RPAREN) instead of
* counting them as stray parentheses
*/
private void escapeStrayParenthesis(Loc loc, ref OutBuffer buf, size_t start, bool respectBackslashEscapes, ErrorSink eSink)
{
uint par_open = 0;
char inCode = 0;
bool atLineStart = true;
for (size_t u = start; u < buf.length; u++)
{
char c = buf[u];
switch (c)
{
case '(':
if (!inCode)
par_open++;
atLineStart = false;
break;
case ')':
if (!inCode)
{
if (par_open == 0)
{
//stray ')'
eSink.warning(loc, "Ddoc: Stray ')'. This may cause incorrect Ddoc output. Use $(RPAREN) instead for unpaired right parentheses.");
buf.remove(u, 1); //remove the )
buf.insert(u, "$(RPAREN)"); //insert this instead
u += 8; //skip over newly inserted macro
}
else
par_open--;
}
atLineStart = false;
break;
case '\n':
atLineStart = true;
version (none)
{
// For this to work, loc must be set to the beginning of the passed
// text which is currently not possible
// (loc is set to the Loc of the Dsymbol)
loc.linnum++;
}
break;
case ' ':
case '\r':
case '\t':
break;
case '-':
case '`':
case '~':
// Issue 15465: don't try to escape unbalanced parens inside code
// blocks.
int numdash = 1;
for (++u; u < buf.length && buf[u] == c; ++u)
++numdash;
--u;
if (c == '`' || (atLineStart && numdash >= 3))
{
if (inCode == c)
inCode = 0;
else if (!inCode)
inCode = c;
}
atLineStart = false;
break;
case '\\':
// replace backslash-escaped parens with their macros
if (!inCode && respectBackslashEscapes && u+1 < buf.length)
{
if (buf[u+1] == '(' || buf[u+1] == ')')
{
const paren = buf[u+1] == '(' ? "$(LPAREN)" : "$(RPAREN)";
buf.remove(u, 2); //remove the \)
buf.insert(u, paren); //insert this instead
u += 8; //skip over newly inserted macro
}
else if (buf[u+1] == '\\')
++u;
}
break;
default:
atLineStart = false;
break;
}
}
if (par_open) // if any unmatched lparens
{
par_open = 0;
for (size_t u = buf.length; u > start;)
{
u--;
const c = buf[u];
switch (c)
{
case ')':
par_open++;
break;
case '(':
if (par_open == 0)
{
//stray '('
eSink.warning(loc, "Ddoc: Stray '('. This may cause incorrect Ddoc output. Use $(LPAREN) instead for unpaired left parentheses.");
buf.remove(u, 1); //remove the (
buf.insert(u, "$(LPAREN)"); //insert this instead
}
else
par_open--;
break;
default:
break;
}
}
}
}
// Basically, this is to skip over things like private{} blocks in a struct or
// class definition that don't add any components to the qualified name.
Scope* skipNonQualScopes(Scope* sc) @safe
{
while (sc && !sc.scopesym)
sc = sc.enclosing;
return sc;
}
bool emitAnchorName(ref OutBuffer buf, Dsymbol s, Scope* sc, bool includeParent)
{
if (!s || s.isPackage() || s.isModule())
return false;
// Add parent names first
bool dot = false;
auto eponymousParent = getEponymousParent(s);
if (includeParent && s.parent || eponymousParent)
dot = emitAnchorName(buf, s.parent, sc, includeParent);
else if (includeParent && sc)
dot = emitAnchorName(buf, sc.scopesym, skipNonQualScopes(sc.enclosing), includeParent);
// Eponymous template members can share the parent anchor name
if (eponymousParent)
return dot;
if (dot)
buf.writeByte('.');
// Use "this" not "__ctor"
TemplateDeclaration td;
if (s.isCtorDeclaration() || ((td = s.isTemplateDeclaration()) !is null && td.onemember && td.onemember.isCtorDeclaration()))
{
buf.writestring("this");
}
else
{
buf.writestring(s.ident ? s.ident.toString : "__anonymous");
}
return true;
}
void emitAnchor(ref OutBuffer buf, Dsymbol s, Scope* sc, bool forHeader = false)
{
Identifier ident;
{
OutBuffer anc;
emitAnchorName(anc, s, skipNonQualScopes(sc), true);
ident = Identifier.idPool(anc[]);
}
auto pcount = cast(void*)ident in sc.anchorCounts;
typeof(*pcount) count;
if (!forHeader)
{
if (pcount)
{
// Existing anchor,
// don't write an anchor for matching consecutive ditto symbols
TemplateDeclaration td = getEponymousParent(s);
if (sc.prevAnchor == ident && sc.lastdc && (isDitto(s.comment) || (td && isDitto(td.comment))))
return;
count = ++*pcount;
}
else
{
sc.anchorCounts[cast(void*)ident] = 1;
count = 1;
}
}
// cache anchor name
sc.prevAnchor = ident;
auto macroName = forHeader ? "DDOC_HEADER_ANCHOR" : "DDOC_ANCHOR";
if (auto imp = s.isImport())
{
// For example: `public import core.stdc.string : memcpy, memcmp;`
if (imp.aliases.length > 0)
{
for(int i = 0; i < imp.aliases.length; i++)
{
// Need to distinguish between
// `public import core.stdc.string : memcpy, memcmp;` and
// `public import core.stdc.string : copy = memcpy, compare = memcmp;`
auto a = imp.aliases[i];
auto id = a ? a : imp.names[i];
auto loc = Loc.init;
Dsymbol pscopesym;
if (auto symFromId = sc.search(loc, id, pscopesym))
{
emitAnchor(buf, symFromId, sc, forHeader);
}
}
}
else
{
// For example: `public import str = core.stdc.string;`
if (imp.aliasId)
{
auto symbolName = imp.aliasId.toString();
buf.printf("$(%.*s %.*s", cast(int) macroName.length, macroName.ptr,
cast(int) symbolName.length, symbolName.ptr);
if (forHeader)
{
buf.printf(", %.*s", cast(int) symbolName.length, symbolName.ptr);
}
}
else
{
// The general case: `public import core.stdc.string;`
// fully qualify imports so `core.stdc.string` doesn't appear as `core`
void printFullyQualifiedImport()
{
foreach (const pid; imp.packages)
{
buf.printf("%s.", pid.toChars());
}
buf.writestring(imp.id.toString());
}
buf.printf("$(%.*s ", cast(int) macroName.length, macroName.ptr);
printFullyQualifiedImport();
if (forHeader)
{
buf.printf(", ");
printFullyQualifiedImport();
}
}
buf.writeByte(')');
}
}
else
{
// buf.writestring("<<<");
// buf.writestring(typeof(ident).stringof);
// buf.writestring(">>>");
// auto symbolName = ident.toString();
auto symbolName = ident.toChars().toDString();
buf.printf("$(%.*s %.*s", cast(int) macroName.length, macroName.ptr,
cast(int) symbolName.length, symbolName.ptr);
// only append count once there's a duplicate
if (count > 1)
buf.printf(".%u", count);
if (forHeader)
{
Identifier shortIdent;
{
OutBuffer anc;
emitAnchorName(anc, s, skipNonQualScopes(sc), false);
shortIdent = Identifier.idPool(anc[]);
}
auto shortName = shortIdent.toString();
buf.printf(", %.*s", cast(int) shortName.length, shortName.ptr);
}
buf.writeByte(')');
}
}
/******************************* emitComment **********************************/
/** Get leading indentation from 'src' which represents lines of code. */
size_t getCodeIndent(const(char)* src)
{
while (src && (*src == '\r' || *src == '\n'))
++src; // skip until we find the first non-empty line
size_t codeIndent = 0;
while (src && (*src == ' ' || *src == '\t'))
{
codeIndent++;
src++;
}
return codeIndent;
}
/** Recursively expand template mixin member docs into the scope. */
void expandTemplateMixinComments(TemplateMixin tm, ref OutBuffer buf, Scope* sc)
{
if (!tm.semanticRun)
tm.dsymbolSemantic(sc);
TemplateDeclaration td = (tm && tm.tempdecl) ? tm.tempdecl.isTemplateDeclaration() : null;
if (td && td.members)
{
for (size_t i = 0; i < td.members.length; i++)
{
Dsymbol sm = (*td.members)[i];
TemplateMixin tmc = sm.isTemplateMixin();
if (tmc && tmc.comment)
expandTemplateMixinComments(tmc, buf, sc);
else
emitComment(sm, buf, sc);
}
}
}
void emitMemberComments(ScopeDsymbol sds, ref OutBuffer buf, Scope* sc)
{
if (!sds.members)
return;
//printf("ScopeDsymbol::emitMemberComments() %s\n", toChars());
const(char)[] m = "$(DDOC_MEMBERS ";
if (sds.isTemplateDeclaration())
m = "$(DDOC_TEMPLATE_MEMBERS ";
else if (sds.isClassDeclaration())
m = "$(DDOC_CLASS_MEMBERS ";
else if (sds.isStructDeclaration())
m = "$(DDOC_STRUCT_MEMBERS ";
else if (sds.isEnumDeclaration())
m = "$(DDOC_ENUM_MEMBERS ";
else if (sds.isModule())
m = "$(DDOC_MODULE_MEMBERS ";
size_t offset1 = buf.length; // save starting offset
buf.writestring(m);
size_t offset2 = buf.length; // to see if we write anything
sc = sc.push(sds);
for (size_t i = 0; i < sds.members.length; i++)
{
Dsymbol s = (*sds.members)[i];
//printf("\ts = '%s'\n", s.toChars());
// only expand if parent is a non-template (semantic won't work)
if (s.comment && s.isTemplateMixin() && s.parent && !s.parent.isTemplateDeclaration())
expandTemplateMixinComments(cast(TemplateMixin)s, buf, sc);
emitComment(s, buf, sc);
}
emitComment(null, buf, sc);
sc.pop();
if (buf.length == offset2)
{
/* Didn't write out any members, so back out last write
*/
buf.setsize(offset1);
}
else
buf.writestring(")");
}
void emitVisibility(ref OutBuffer buf, Import i)
{
// imports are private by default, which is different from other declarations
// so they should explicitly show their visibility
emitVisibility(buf, i.visibility);
}
void emitVisibility(ref OutBuffer buf, Declaration d)
{
auto vis = d.visibility;
if (vis.kind != Visibility.Kind.undefined && vis.kind != Visibility.Kind.public_)
{
emitVisibility(buf, vis);
}
}
void emitVisibility(ref OutBuffer buf, Visibility vis)
{
visibilityToBuffer(buf, vis);
buf.writeByte(' ');
}
void emitComment(Dsymbol s, ref OutBuffer buf, Scope* sc)
{
extern (C++) final class EmitComment : Visitor
{
alias visit = Visitor.visit;
public:
OutBuffer* buf;
Scope* sc;
extern (D) this(ref OutBuffer buf, Scope* sc) scope
{
this.buf = &buf;
this.sc = sc;
}
override void visit(Dsymbol)
{
}
override void visit(InvariantDeclaration)
{
}
override void visit(UnitTestDeclaration)
{
}
override void visit(PostBlitDeclaration)
{
}
override void visit(DtorDeclaration)
{
}
override void visit(StaticCtorDeclaration)
{
}
override void visit(StaticDtorDeclaration)
{
}
override void visit(TypeInfoDeclaration)
{
}
void emit(Scope* sc, Dsymbol s, const(char)* com)
{
if (s && sc.lastdc && isDitto(com))
{
sc.lastdc.a.push(s);
return;
}
// Put previous doc comment if exists
if (DocComment* dc = sc.lastdc)
{
assert(dc.a.length > 0, "Expects at least one declaration for a" ~
"documentation comment");
auto symbol = dc.a[0];
buf.writestring("$(DDOC_MEMBER");
buf.writestring("$(DDOC_MEMBER_HEADER");
emitAnchor(*buf, symbol, sc, true);
buf.writeByte(')');
// Put the declaration signatures as the document 'title'
buf.writestring(ddoc_decl_s);
for (size_t i = 0; i < dc.a.length; i++)
{