mirror of https://github.com/buggins/dlangui.git
refactoring of DML code
This commit is contained in:
Vadim Lopatin
parent
48a032f4d9
commit
3eaea625d7
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@ -367,14 +367,12 @@
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<Folder name="dlangui">
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<Folder name="core">
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<File path="src\dlangui\core\collections.d" />
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<File path="src\dlangui\core\dmlhighlight.d" />
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<File path="src\dlangui\core\editable.d" />
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<File path="src\dlangui\core\events.d" />
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<File path="src\dlangui\core\files.d" />
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<File path="src\dlangui\core\i18n.d" />
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<File path="src\dlangui\core\linestream.d" />
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<File path="src\dlangui\core\logger.d" />
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<File path="src\dlangui\core\parser.d" />
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<File path="src\dlangui\core\settings.d" />
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<File path="src\dlangui\core\signals.d" />
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<File path="src\dlangui\core\stdaction.d" />
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@ -387,6 +385,10 @@
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<File path="src\dlangui\dialogs\msgbox.d" />
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<File path="src\dlangui\dialogs\settingsdialog.d" />
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</Folder>
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<Folder name="dml">
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<File path="src\dlangui\dml\dmlhighlight.d" />
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<File path="src\dlangui\dml\parser.d" />
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</Folder>
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<Folder name="graphics">
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<Folder name="scene">
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<File path="src\dlangui\graphics\scene\node.d" />
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@ -3,7 +3,7 @@ module dmledit;
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import dlangui;
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import dlangui.dialogs.filedlg;
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import dlangui.dialogs.dialog;
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import dlangui.core.dmlhighlight;
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import dlangui.dml.dmlhighlight;
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import std.array : replaceFirst;
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mixin APP_ENTRY_POINT;
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@ -1,668 +0,0 @@
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module dlangui.core.dmlhighlight;
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import dlangui.core.parser;
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import dlangui.core.editable;
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import dlangui.core.linestream;
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import dlangui.core.textsource;
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import dlangui.core.logger;
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import dlangui.widgets.metadata;
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class DMLSyntaxSupport : SyntaxSupport {
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EditableContent _content;
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SourceFile _file;
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this (string filename) {
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_file = new SourceFile(filename);
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}
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TokenPropString[] _props;
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/// returns editable content
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@property EditableContent content() { return _content; }
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/// set editable content
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@property SyntaxSupport content(EditableContent content) {
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_content = content;
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return this;
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}
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private enum BracketMatch {
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CONTINUE,
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FOUND,
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ERROR
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}
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private static struct BracketStack {
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dchar[] buf;
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int pos;
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bool reverse;
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void init(bool reverse) {
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this.reverse = reverse;
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pos = 0;
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}
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void push(dchar ch) {
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if (buf.length <= pos)
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buf.length = pos + 16;
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buf[pos++] = ch;
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}
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dchar pop() {
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if (pos <= 0)
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return 0;
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return buf[--pos];
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}
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BracketMatch process(dchar ch) {
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if (reverse) {
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if (isCloseBracket(ch)) {
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push(ch);
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return BracketMatch.CONTINUE;
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} else {
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if (pop() != pairedBracket(ch))
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return BracketMatch.ERROR;
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if (pos == 0)
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return BracketMatch.FOUND;
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return BracketMatch.CONTINUE;
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}
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} else {
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if (isOpenBracket(ch)) {
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push(ch);
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return BracketMatch.CONTINUE;
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} else {
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if (pop() != pairedBracket(ch))
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return BracketMatch.ERROR;
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if (pos == 0)
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return BracketMatch.FOUND;
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return BracketMatch.CONTINUE;
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}
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}
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}
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}
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BracketStack _bracketStack;
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static bool isBracket(dchar ch) {
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return pairedBracket(ch) != 0;
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}
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static dchar pairedBracket(dchar ch) {
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switch (ch) {
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case '(':
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return ')';
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case ')':
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return '(';
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case '{':
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return '}';
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case '}':
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return '{';
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case '[':
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return ']';
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case ']':
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return '[';
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default:
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return 0; // not a bracket
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}
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}
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static bool isOpenBracket(dchar ch) {
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switch (ch) {
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case '(':
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case '{':
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case '[':
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return true;
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default:
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return false;
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}
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}
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static bool isCloseBracket(dchar ch) {
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switch (ch) {
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case ')':
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case '}':
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case ']':
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return true;
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default:
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return false;
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}
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}
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protected dchar nextBracket(int dir, ref TextPosition p) {
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for (;;) {
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TextPosition oldpos = p;
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p = dir < 0 ? _content.prevCharPos(p) : _content.nextCharPos(p);
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if (p == oldpos)
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return 0;
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auto prop = _content.tokenProp(p);
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if (tokenCategory(prop) == TokenCategory.Op) {
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dchar ch = _content[p];
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if (isBracket(ch))
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return ch;
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}
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}
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}
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/// returns paired bracket {} () [] for char at position p, returns paired char position or p if not found or not bracket
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override TextPosition findPairedBracket(TextPosition p) {
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if (p.line < 0 || p.line >= content.length)
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return p;
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dstring s = content.line(p.line);
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if (p.pos < 0 || p.pos >= s.length)
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return p;
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dchar ch = content[p];
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dchar paired = pairedBracket(ch);
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if (!paired)
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return p;
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TextPosition startPos = p;
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int dir = isOpenBracket(ch) ? 1 : -1;
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_bracketStack.init(dir < 0);
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_bracketStack.process(ch);
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for (;;) {
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ch = nextBracket(dir, p);
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if (!ch) // no more brackets
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return startPos;
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auto match = _bracketStack.process(ch);
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if (match == BracketMatch.FOUND)
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return p;
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if (match == BracketMatch.ERROR)
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return startPos;
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// continue
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}
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}
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/// return true if toggle line comment is supported for file type
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override @property bool supportsToggleLineComment() {
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return true;
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}
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/// return true if can toggle line comments for specified text range
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override bool canToggleLineComment(TextRange range) {
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TextRange r = content.fullLinesRange(range);
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if (isInsideBlockComment(r.start) || isInsideBlockComment(r.end))
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return false;
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return true;
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}
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protected bool isLineComment(dstring s) {
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for (int i = 0; i < cast(int)s.length - 1; i++) {
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if (s[i] == '/' && s[i + 1] == '/')
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return true;
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else if (s[i] != ' ' && s[i] != '\t')
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return false;
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}
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return false;
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}
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protected dstring commentLine(dstring s, int commentX) {
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dchar[] res;
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int x = 0;
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bool commented = false;
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for (int i = 0; i < s.length; i++) {
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dchar ch = s[i];
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if (ch == '\t') {
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int newX = (x + _content.tabSize) / _content.tabSize * _content.tabSize;
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if (!commented && newX >= commentX) {
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commented = true;
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if (newX != commentX) {
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// replace tab with space
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for (; x <= commentX; x++)
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res ~= ' ';
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} else {
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res ~= ch;
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x = newX;
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}
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res ~= "//"d;
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x += 2;
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} else {
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res ~= ch;
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x = newX;
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}
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} else {
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if (!commented && x == commentX) {
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commented = true;
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res ~= "//"d;
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res ~= ch;
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x += 3;
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} else {
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res ~= ch;
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x++;
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}
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}
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}
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if (!commented) {
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for (; x < commentX; x++)
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res ~= ' ';
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res ~= "//"d;
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}
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return cast(dstring)res;
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}
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/// remove single line comment from beginning of line
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protected dstring uncommentLine(dstring s) {
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int p = -1;
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for (int i = 0; i < cast(int)s.length - 1; i++) {
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if (s[i] == '/' && s[i + 1] == '/') {
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p = i;
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break;
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}
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}
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if (p < 0)
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return s;
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s = s[0..p] ~ s[p + 2 .. $];
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for (int i = 0; i < s.length; i++) {
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if (s[i] != ' ' && s[i] != '\t') {
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return s;
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}
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}
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return null;
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}
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/// searches for neares token start before or equal to position
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protected TextPosition tokenStart(TextPosition pos) {
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TextPosition p = pos;
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for (;;) {
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TextPosition prevPos = content.prevCharPos(p);
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if (p == prevPos)
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return p; // begin of file
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TokenProp prop = content.tokenProp(p);
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TokenProp prevProp = content.tokenProp(prevPos);
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if (prop && prop != prevProp)
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return p;
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p = prevPos;
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}
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}
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static struct TokenWithRange {
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Token token;
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TextRange range;
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@property string toString() {
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return token.toString ~ range.toString;
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}
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}
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protected Token[] _tokens;
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protected int _tokenIndex;
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protected bool initTokenizer() {
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_tokens = tokenizeML(content.lines);
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_tokenIndex = 0;
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return true;
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}
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protected TokenWithRange nextToken() {
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TokenWithRange res;
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if (_tokenIndex < _tokens.length) {
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res.range.start = TextPosition(_tokens[_tokenIndex].line, _tokens[_tokenIndex].pos);
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if (_tokenIndex + 1 < _tokens.length)
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res.range.end = TextPosition(_tokens[_tokenIndex + 1].line, _tokens[_tokenIndex + 1].pos);
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else
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res.range.end = content.endOfFile();
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res.token = _tokens[_tokenIndex];
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_tokenIndex++;
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} else {
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res.range.end = res.range.start = content.endOfFile();
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}
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return res;
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}
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protected TokenWithRange getPositionToken(TextPosition pos) {
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initTokenizer();
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for (;;) {
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TokenWithRange tokenRange = nextToken();
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//Log.d("read token: ", tokenRange);
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if (tokenRange.token.type == TokenType.eof) {
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//Log.d("end of file");
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return tokenRange;
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}
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if (pos >= tokenRange.range.start && pos < tokenRange.range.end) {
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//Log.d("found: ", pos, " in ", tokenRange);
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return tokenRange;
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}
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}
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}
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protected TokenWithRange[] getRangeTokens(TextRange range) {
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TokenWithRange[] res;
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initTokenizer();
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for (;;) {
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TokenWithRange tokenRange = nextToken();
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//Log.d("read token: ", tokenRange);
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if (tokenRange.token.type == TokenType.eof) {
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return res;
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}
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if (tokenRange.range.intersects(range)) {
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//Log.d("found: ", pos, " in ", tokenRange);
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res ~= tokenRange;
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}
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}
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}
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protected bool isInsideBlockComment(TextPosition pos) {
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TokenWithRange tokenRange = getPositionToken(pos);
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if (tokenRange.token.type == TokenType.comment && tokenRange.token.isMultilineComment)
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return pos > tokenRange.range.start && pos < tokenRange.range.end;
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return false;
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}
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/// toggle line comments for specified text range
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override void toggleLineComment(TextRange range, Object source) {
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TextRange r = content.fullLinesRange(range);
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if (isInsideBlockComment(r.start) || isInsideBlockComment(r.end))
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return;
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int lineCount = r.end.line - r.start.line;
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bool noEolAtEndOfRange = false;
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if (lineCount == 0 || r.end.pos > 0) {
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noEolAtEndOfRange = true;
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lineCount++;
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}
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int minLeftX = -1;
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bool hasComments = false;
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bool hasNoComments = false;
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bool hasNonEmpty = false;
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dstring[] srctext;
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dstring[] dsttext;
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for (int i = 0; i < lineCount; i++) {
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int lineIndex = r.start.line + i;
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dstring s = content.line(lineIndex);
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srctext ~= s;
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TextLineMeasure m = content.measureLine(lineIndex);
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if (!m.empty) {
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if (minLeftX < 0 || minLeftX > m.firstNonSpaceX)
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minLeftX = m.firstNonSpaceX;
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hasNonEmpty = true;
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if (isLineComment(s))
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hasComments = true;
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else
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hasNoComments = true;
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}
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}
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if (minLeftX < 0)
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minLeftX = 0;
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if (hasNoComments || !hasComments) {
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// comment
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for (int i = 0; i < lineCount; i++) {
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dsttext ~= commentLine(srctext[i], minLeftX);
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}
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if (!noEolAtEndOfRange)
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dsttext ~= ""d;
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EditOperation op = new EditOperation(EditAction.Replace, r, dsttext);
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_content.performOperation(op, source);
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} else {
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// uncomment
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for (int i = 0; i < lineCount; i++) {
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dsttext ~= uncommentLine(srctext[i]);
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}
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if (!noEolAtEndOfRange)
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dsttext ~= ""d;
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EditOperation op = new EditOperation(EditAction.Replace, r, dsttext);
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_content.performOperation(op, source);
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}
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}
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/// return true if toggle block comment is supported for file type
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override @property bool supportsToggleBlockComment() {
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return true;
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}
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/// return true if can toggle block comments for specified text range
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override bool canToggleBlockComment(TextRange range) {
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TokenWithRange startToken = getPositionToken(range.start);
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TokenWithRange endToken = getPositionToken(range.end);
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//Log.d("canToggleBlockComment: startToken=", startToken, " endToken=", endToken);
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if (startToken.range == endToken.range && startToken.token.isMultilineComment) {
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//Log.d("canToggleBlockComment: can uncomment");
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return true;
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}
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if (range.empty)
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return false;
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TokenWithRange[] tokens = getRangeTokens(range);
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foreach(ref t; tokens) {
|
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if (t.token.type == TokenType.comment) {
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if (t.token.isMultilineComment) {
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// disable until nested comments support is implemented
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return false;
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} else {
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// single line comment
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if (t.range.isInside(range.start) || t.range.isInside(range.end))
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return false;
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}
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}
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}
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return true;
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}
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/// toggle block comments for specified text range
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override void toggleBlockComment(TextRange srcrange, Object source) {
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TokenWithRange startToken = getPositionToken(srcrange.start);
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TokenWithRange endToken = getPositionToken(srcrange.end);
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if (startToken.range == endToken.range && startToken.token.isMultilineComment) {
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TextRange range = startToken.range;
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dstring[] dsttext;
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for (int i = range.start.line; i <= range.end.line; i++) {
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dstring s = content.line(i);
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int charsRemoved = 0;
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int minp = 0;
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if (i == range.start.line) {
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int maxp = content.lineLength(range.start.line);
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if (i == range.end.line)
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maxp = range.end.pos - 2;
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charsRemoved = 2;
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for (int j = range.start.pos + charsRemoved; j < maxp; j++) {
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if (s[j] != s[j - 1])
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break;
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charsRemoved++;
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}
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//Log.d("line before removing start of comment:", s);
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s = s[range.start.pos + charsRemoved .. $];
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//Log.d("line after removing start of comment:", s);
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charsRemoved += range.start.pos;
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}
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if (i == range.end.line) {
|
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int endp = range.end.pos;
|
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if (charsRemoved > 0)
|
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endp -= charsRemoved;
|
||||
int endRemoved = 2;
|
||||
for (int j = endp - endRemoved; j >= 0; j--) {
|
||||
if (s[j] != s[j + 1])
|
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break;
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||||
endRemoved++;
|
||||
}
|
||||
//Log.d("line before removing end of comment:", s);
|
||||
s = s[0 .. endp - endRemoved];
|
||||
//Log.d("line after removing end of comment:", s);
|
||||
}
|
||||
dsttext ~= s;
|
||||
}
|
||||
EditOperation op = new EditOperation(EditAction.Replace, range, dsttext);
|
||||
_content.performOperation(op, source);
|
||||
return;
|
||||
} else {
|
||||
if (srcrange.empty)
|
||||
return;
|
||||
TokenWithRange[] tokens = getRangeTokens(srcrange);
|
||||
foreach(ref t; tokens) {
|
||||
if (t.token.type == TokenType.comment) {
|
||||
if (t.token.isMultilineComment) {
|
||||
// disable until nested comments support is implemented
|
||||
return;
|
||||
} else {
|
||||
// single line comment
|
||||
if (t.range.isInside(srcrange.start) || t.range.isInside(srcrange.end))
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
dstring[] dsttext;
|
||||
for (int i = srcrange.start.line; i <= srcrange.end.line; i++) {
|
||||
dstring s = content.line(i);
|
||||
int charsAdded = 0;
|
||||
if (i == srcrange.start.line) {
|
||||
int p = srcrange.start.pos;
|
||||
if (p < s.length) {
|
||||
s = s[p .. $];
|
||||
charsAdded = -p;
|
||||
} else {
|
||||
charsAdded = -(cast(int)s.length);
|
||||
s = null;
|
||||
}
|
||||
s = "/*" ~ s;
|
||||
charsAdded += 2;
|
||||
}
|
||||
if (i == srcrange.end.line) {
|
||||
int p = srcrange.end.pos + charsAdded;
|
||||
s = p > 0 ? s[0..p] : null;
|
||||
s ~= "*/";
|
||||
}
|
||||
dsttext ~= s;
|
||||
}
|
||||
EditOperation op = new EditOperation(EditAction.Replace, srcrange, dsttext);
|
||||
_content.performOperation(op, source);
|
||||
return;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/// categorize characters in content by token types
|
||||
void updateHighlight(dstring[] lines, TokenPropString[] props, int changeStartLine, int changeEndLine) {
|
||||
|
||||
initTokenizer();
|
||||
_props = props;
|
||||
changeStartLine = 0;
|
||||
changeEndLine = cast(int)lines.length;
|
||||
int tokenPos = 0;
|
||||
int tokenLine = 0;
|
||||
ubyte category = 0;
|
||||
try {
|
||||
for (;;) {
|
||||
TokenWithRange token = nextToken();
|
||||
if (token.token.type == TokenType.eof) {
|
||||
break;
|
||||
}
|
||||
uint newPos = token.range.start.pos;
|
||||
uint newLine = token.range.start.line;
|
||||
|
||||
// fill with category
|
||||
for (int i = tokenLine; i <= newLine; i++) {
|
||||
int start = i > tokenLine ? 0 : tokenPos;
|
||||
int end = i < newLine ? cast(int)lines[i].length : newPos;
|
||||
for (int j = start; j < end; j++) {
|
||||
if (j < _props[i].length) {
|
||||
_props[i][j] = category;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// handle token - convert to category
|
||||
switch(token.token.type) {
|
||||
case TokenType.comment:
|
||||
category = TokenCategory.Comment;
|
||||
break;
|
||||
case TokenType.ident:
|
||||
if (isWidgetClassName(token.token.text))
|
||||
category = TokenCategory.Identifier_Class;
|
||||
else
|
||||
category = TokenCategory.Identifier;
|
||||
break;
|
||||
case TokenType.str:
|
||||
category = TokenCategory.String;
|
||||
break;
|
||||
case TokenType.integer:
|
||||
category = TokenCategory.Integer;
|
||||
break;
|
||||
case TokenType.floating:
|
||||
category = TokenCategory.Float;
|
||||
break;
|
||||
case TokenType.error:
|
||||
category = TokenCategory.Error;
|
||||
break;
|
||||
default:
|
||||
if (token.token.type >= TokenType.colon)
|
||||
category = TokenCategory.Op;
|
||||
else
|
||||
category = 0;
|
||||
break;
|
||||
}
|
||||
tokenPos = newPos;
|
||||
tokenLine= newLine;
|
||||
|
||||
}
|
||||
} catch (Exception e) {
|
||||
Log.e("exception while trying to parse DML source", e);
|
||||
}
|
||||
_props = null;
|
||||
}
|
||||
|
||||
|
||||
/// returns true if smart indent is supported
|
||||
override bool supportsSmartIndents() {
|
||||
return true;
|
||||
}
|
||||
|
||||
protected bool _opInProgress;
|
||||
protected void applyNewLineSmartIndent(EditOperation op, Object source) {
|
||||
int line = op.newRange.end.line;
|
||||
if (line == 0)
|
||||
return; // not for first line
|
||||
int prevLine = line - 1;
|
||||
dstring lineText = _content.line(line);
|
||||
TextLineMeasure lineMeasurement = _content.measureLine(line);
|
||||
TextLineMeasure prevLineMeasurement = _content.measureLine(prevLine);
|
||||
while (prevLineMeasurement.empty && prevLine > 0) {
|
||||
prevLine--;
|
||||
prevLineMeasurement = _content.measureLine(prevLine);
|
||||
}
|
||||
if (lineMeasurement.firstNonSpaceX >= 0 && lineMeasurement.firstNonSpaceX < prevLineMeasurement.firstNonSpaceX) {
|
||||
dstring prevLineText = _content.line(prevLine);
|
||||
TokenPropString prevLineTokenProps = _content.lineTokenProps(prevLine);
|
||||
dchar lastOpChar = 0;
|
||||
for (int j = prevLineMeasurement.lastNonSpace; j >= 0; j--) {
|
||||
auto cat = j < prevLineTokenProps.length ? tokenCategory(prevLineTokenProps[j]) : 0;
|
||||
if (cat == TokenCategory.Op) {
|
||||
lastOpChar = prevLineText[j];
|
||||
break;
|
||||
} else if (cat != TokenCategory.Comment && cat != TokenCategory.WhiteSpace) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
int spacex = prevLineMeasurement.firstNonSpaceX;
|
||||
if (lastOpChar == '{')
|
||||
spacex = _content.nextTab(spacex);
|
||||
dstring txt = _content.fillSpace(spacex);
|
||||
EditOperation op2 = new EditOperation(EditAction.Replace, TextRange(TextPosition(line, 0), TextPosition(line, lineMeasurement.firstNonSpace >= 0 ? lineMeasurement.firstNonSpace : 0)), [txt]);
|
||||
_opInProgress = true;
|
||||
_content.performOperation(op2, source);
|
||||
_opInProgress = false;
|
||||
}
|
||||
}
|
||||
|
||||
protected void applyClosingCurlySmartIndent(EditOperation op, Object source) {
|
||||
int line = op.newRange.end.line;
|
||||
TextPosition p2 = findPairedBracket(op.newRange.start);
|
||||
if (p2 == op.newRange.start || p2.line > op.newRange.start.line)
|
||||
return;
|
||||
int prevLine = p2.line;
|
||||
TextLineMeasure lineMeasurement = _content.measureLine(line);
|
||||
TextLineMeasure prevLineMeasurement = _content.measureLine(prevLine);
|
||||
if (lineMeasurement.firstNonSpace != op.newRange.start.pos)
|
||||
return; // not in beginning of line
|
||||
if (lineMeasurement.firstNonSpaceX >= 0 && lineMeasurement.firstNonSpaceX != prevLineMeasurement.firstNonSpaceX) {
|
||||
dstring prevLineText = _content.line(prevLine);
|
||||
TokenPropString prevLineTokenProps = _content.lineTokenProps(prevLine);
|
||||
int spacex = prevLineMeasurement.firstNonSpaceX;
|
||||
if (spacex != lineMeasurement.firstNonSpaceX) {
|
||||
dstring txt = _content.fillSpace(spacex);
|
||||
txt = txt ~ "}";
|
||||
EditOperation op2 = new EditOperation(EditAction.Replace, TextRange(TextPosition(line, 0), TextPosition(line, lineMeasurement.firstNonSpace >= 0 ? lineMeasurement.firstNonSpace + 1 : 0)), [txt]);
|
||||
_opInProgress = true;
|
||||
_content.performOperation(op2, source);
|
||||
_opInProgress = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// apply smart indent, if supported
|
||||
override void applySmartIndent(EditOperation op, Object source) {
|
||||
if (_opInProgress)
|
||||
return;
|
||||
if (op.isInsertNewLine) {
|
||||
// Enter key pressed - new line inserted or splitted
|
||||
applyNewLineSmartIndent(op, source);
|
||||
} else if (op.singleChar == '}') {
|
||||
// } entered - probably need unindent
|
||||
applyClosingCurlySmartIndent(op, source);
|
||||
} else if (op.singleChar == '{') {
|
||||
// { entered - probably need auto closing }
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -1,836 +0,0 @@
|
|||
// Written in the D programming language.
|
||||
|
||||
/**
|
||||
This module is DML (DlangUI Markup Language) parser - similar to QML in QtQuick
|
||||
|
||||
Synopsis:
|
||||
|
||||
----
|
||||
// helloworld
|
||||
----
|
||||
|
||||
Copyright: Vadim Lopatin, 2015
|
||||
License: Boost License 1.0
|
||||
Authors: Vadim Lopatin, coolreader.org@gmail.com
|
||||
*/
|
||||
module dlangui.core.parser;
|
||||
|
||||
import dlangui.core.linestream;
|
||||
import dlangui.core.collections;
|
||||
import dlangui.core.types;
|
||||
import dlangui.widgets.widget;
|
||||
import dlangui.widgets.metadata;
|
||||
import std.conv : to;
|
||||
import std.algorithm : equal, min, max;
|
||||
import std.utf : toUTF32, toUTF8;
|
||||
import std.array : join;
|
||||
|
||||
class ParserException : Exception {
|
||||
protected string _msg;
|
||||
protected string _file;
|
||||
protected int _line;
|
||||
protected int _pos;
|
||||
|
||||
@property string file() { return _file; }
|
||||
@property string msg() { return _msg; }
|
||||
@property int line() { return _line; }
|
||||
@property int pos() { return _pos; }
|
||||
|
||||
this(string msg, string file, int line, int pos) {
|
||||
super(msg ~ " at " ~ file ~ " line " ~ to!string(line) ~ " column " ~ to!string(pos));
|
||||
_msg = msg;
|
||||
_file = file;
|
||||
_line = line;
|
||||
_pos = pos;
|
||||
}
|
||||
}
|
||||
|
||||
/// parser exception - unknown (unregistered) widget name
|
||||
class UnknownWidgetException : ParserException {
|
||||
protected string _objectName;
|
||||
|
||||
@property string objectName() { return _objectName; }
|
||||
|
||||
this(string msg, string objectName, string file, int line, int pos) {
|
||||
super(msg is null ? "Unknown widget name: " ~ objectName : msg, file, line, pos);
|
||||
_objectName = objectName;
|
||||
}
|
||||
}
|
||||
|
||||
/// parser exception - unknown property for widget
|
||||
class UnknownPropertyException : UnknownWidgetException {
|
||||
protected string _propName;
|
||||
|
||||
@property string propName() { return _propName; }
|
||||
|
||||
this(string msg, string objectName, string propName, string file, int line, int pos) {
|
||||
super(msg is null ? "Unknown property " ~ objectName ~ "." ~ propName : msg, objectName, file, line, pos);
|
||||
}
|
||||
}
|
||||
|
||||
enum TokenType : ushort {
|
||||
/// end of file
|
||||
eof,
|
||||
/// end of line
|
||||
eol,
|
||||
/// whitespace
|
||||
whitespace,
|
||||
/// string literal
|
||||
str,
|
||||
/// integer literal
|
||||
integer,
|
||||
/// floating point literal
|
||||
floating,
|
||||
/// comment
|
||||
comment,
|
||||
/// ident
|
||||
ident,
|
||||
/// error
|
||||
error,
|
||||
// operators
|
||||
/// : operator
|
||||
colon,
|
||||
/// . operator
|
||||
dot,
|
||||
/// ; operator
|
||||
semicolon,
|
||||
/// , operator
|
||||
comma,
|
||||
/// - operator
|
||||
minus,
|
||||
/// + operator
|
||||
plus,
|
||||
/// [
|
||||
curlyOpen,
|
||||
/// ]
|
||||
curlyClose,
|
||||
/// (
|
||||
open,
|
||||
/// )
|
||||
close,
|
||||
/// [
|
||||
squareOpen,
|
||||
/// ]
|
||||
squareClose,
|
||||
}
|
||||
|
||||
struct Token {
|
||||
TokenType type;
|
||||
ushort line;
|
||||
ushort pos;
|
||||
bool multiline;
|
||||
string text;
|
||||
union {
|
||||
int intvalue;
|
||||
double floatvalue;
|
||||
}
|
||||
public @property string toString() {
|
||||
if (type == TokenType.integer)
|
||||
return "" ~ to!string(line) ~ ":" ~ to!string(pos) ~ " " ~ to!string(type) ~ " " ~ to!string(intvalue);
|
||||
else if (type == TokenType.floating)
|
||||
return "" ~ to!string(line) ~ ":" ~ to!string(pos) ~ " " ~ to!string(type) ~ " " ~ to!string(floatvalue);
|
||||
else
|
||||
return "" ~ to!string(line) ~ ":" ~ to!string(pos) ~ " " ~ to!string(type) ~ " \"" ~ text ~ "\"";
|
||||
}
|
||||
@property bool isMultilineComment() {
|
||||
return type == TokenType.comment && multiline;
|
||||
}
|
||||
}
|
||||
|
||||
/// simple tokenizer for DlangUI ML
|
||||
class Tokenizer {
|
||||
protected LineStream _lines;
|
||||
|
||||
dchar[] _lineText;
|
||||
ushort _line;
|
||||
ushort _pos;
|
||||
int _len;
|
||||
dchar _prevChar;
|
||||
string _filename;
|
||||
|
||||
Token _token;
|
||||
|
||||
enum : int {
|
||||
EOF_CHAR = 0x001A,
|
||||
EOL_CHAR = 0x000A
|
||||
};
|
||||
|
||||
this(string source, string filename = "") {
|
||||
_filename = filename;
|
||||
_lines = LineStream.create(source, filename);
|
||||
_lineText = _lines.readLine();
|
||||
_len = cast(int)_lineText.length;
|
||||
_line = 0;
|
||||
_pos = 0;
|
||||
_prevChar = 0;
|
||||
}
|
||||
|
||||
~this() {
|
||||
destroy(_lines);
|
||||
_lines = null;
|
||||
}
|
||||
|
||||
protected dchar peekChar() {
|
||||
if (_pos < _len)
|
||||
return _lineText[_pos];
|
||||
else if (_lineText is null)
|
||||
return EOF_CHAR;
|
||||
return EOL_CHAR;
|
||||
}
|
||||
|
||||
protected dchar peekNextChar() {
|
||||
if (_pos < _len - 1)
|
||||
return _lineText[_pos + 1];
|
||||
else if (_lineText is null)
|
||||
return EOF_CHAR;
|
||||
return EOL_CHAR;
|
||||
}
|
||||
|
||||
protected dchar nextChar() {
|
||||
if (_pos < _len)
|
||||
_prevChar = _lineText[_pos++];
|
||||
else if (_lineText is null)
|
||||
_prevChar = EOF_CHAR;
|
||||
else {
|
||||
_lineText = _lines.readLine();
|
||||
_len = cast(int)_lineText.length;
|
||||
_line++;
|
||||
_pos = 0;
|
||||
_prevChar = EOL_CHAR;
|
||||
}
|
||||
return _prevChar;
|
||||
}
|
||||
|
||||
protected dchar skipChar() {
|
||||
nextChar();
|
||||
return peekChar();
|
||||
}
|
||||
|
||||
protected void setTokenStart() {
|
||||
_token.pos = _pos;
|
||||
_token.line = _line;
|
||||
_token.text = null;
|
||||
_token.intvalue = 0;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseEof() {
|
||||
_token.type = TokenType.eof;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseEol() {
|
||||
_token.type = TokenType.eol;
|
||||
nextChar();
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseWhiteSpace() {
|
||||
_token.type = TokenType.whitespace;
|
||||
for(;;) {
|
||||
dchar ch = skipChar();
|
||||
if (ch != ' ' && ch != '\t')
|
||||
break;
|
||||
}
|
||||
return _token;
|
||||
}
|
||||
|
||||
static bool isAlpha(dchar ch) {
|
||||
return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || ch == '_';
|
||||
}
|
||||
|
||||
static bool isNum(dchar ch) {
|
||||
return (ch >= '0' && ch <= '9');
|
||||
}
|
||||
|
||||
static bool isAlphaNum(dchar ch) {
|
||||
return isNum(ch) || isAlpha(ch);
|
||||
}
|
||||
|
||||
private char[] _stringbuf;
|
||||
protected ref const(Token) parseString() {
|
||||
_token.type = TokenType.str;
|
||||
//skipChar(); // skip "
|
||||
bool lastBackslash = false;
|
||||
_stringbuf.length = 0;
|
||||
for(;;) {
|
||||
dchar ch = skipChar();
|
||||
if (ch == '\"') {
|
||||
if (lastBackslash) {
|
||||
_stringbuf ~= ch;
|
||||
lastBackslash = false;
|
||||
} else {
|
||||
skipChar();
|
||||
break;
|
||||
}
|
||||
} else if (ch == '\\') {
|
||||
if (lastBackslash) {
|
||||
_stringbuf ~= ch;
|
||||
lastBackslash = false;
|
||||
} else {
|
||||
lastBackslash = true;
|
||||
}
|
||||
} else if (ch == EOL_CHAR) {
|
||||
skipChar();
|
||||
break;
|
||||
} else if (lastBackslash) {
|
||||
if (ch == 'n')
|
||||
ch = '\n';
|
||||
else if (ch == 't')
|
||||
ch = '\t';
|
||||
_stringbuf ~= ch;
|
||||
lastBackslash = false;
|
||||
} else {
|
||||
_stringbuf ~= ch;
|
||||
lastBackslash = false;
|
||||
}
|
||||
}
|
||||
_token.text = _stringbuf.dup;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseIdent() {
|
||||
_token.type = TokenType.ident;
|
||||
_stringbuf.length = 0;
|
||||
_stringbuf ~= peekChar();
|
||||
for(;;) {
|
||||
dchar ch = skipChar();
|
||||
if (!isAlphaNum(ch))
|
||||
break;
|
||||
_stringbuf ~= ch;
|
||||
}
|
||||
_token.text = _stringbuf.dup;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseFloating(int n) {
|
||||
_token.type = TokenType.floating;
|
||||
dchar ch = peekChar();
|
||||
// floating point
|
||||
int div = 0;
|
||||
int n2 = 0;
|
||||
for (;;) {
|
||||
ch = skipChar();
|
||||
if (!isNum(ch))
|
||||
break;
|
||||
n2 = n2 * 10 + (ch - '0');
|
||||
div++;
|
||||
}
|
||||
_token.floatvalue = cast(double)n + (div > 0 ? cast(double)n2 / div : 0.0);
|
||||
string suffix;
|
||||
if (ch == '%') {
|
||||
suffix ~= ch;
|
||||
ch = skipChar();
|
||||
} else {
|
||||
while (ch >= 'a' && ch <= 'z') {
|
||||
suffix ~= ch;
|
||||
ch = skipChar();
|
||||
}
|
||||
}
|
||||
if (isAlphaNum(ch) || ch == '.')
|
||||
return parseError();
|
||||
_token.text = suffix;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseNumber() {
|
||||
dchar ch = peekChar();
|
||||
uint n = ch - '0';
|
||||
for(;;) {
|
||||
ch = skipChar();
|
||||
if (!isNum(ch))
|
||||
break;
|
||||
n = n * 10 + (ch - '0');
|
||||
}
|
||||
if (ch == '.')
|
||||
return parseFloating(n);
|
||||
string suffix;
|
||||
if (ch == '%') {
|
||||
suffix ~= ch;
|
||||
ch = skipChar();
|
||||
} else {
|
||||
while (ch >= 'a' && ch <= 'z') {
|
||||
suffix ~= ch;
|
||||
ch = skipChar();
|
||||
}
|
||||
}
|
||||
if (isAlphaNum(ch) || ch == '.')
|
||||
return parseError();
|
||||
_token.type = TokenType.integer;
|
||||
_token.intvalue = n;
|
||||
_token.text = suffix;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseSingleLineComment() {
|
||||
for(;;) {
|
||||
dchar ch = skipChar();
|
||||
if (ch == EOL_CHAR || ch == EOF_CHAR)
|
||||
break;
|
||||
}
|
||||
_token.type = TokenType.comment;
|
||||
_token.multiline = false;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseMultiLineComment() {
|
||||
skipChar();
|
||||
for(;;) {
|
||||
dchar ch = skipChar();
|
||||
if (ch == '*' && peekNextChar() == '/') {
|
||||
skipChar();
|
||||
skipChar();
|
||||
break;
|
||||
}
|
||||
if (ch == EOF_CHAR)
|
||||
break;
|
||||
}
|
||||
_token.type = TokenType.comment;
|
||||
_token.multiline = true;
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseError() {
|
||||
_token.type = TokenType.error;
|
||||
for(;;) {
|
||||
dchar ch = skipChar();
|
||||
if (ch == ' ' || ch == '\t' || ch == EOL_CHAR || ch == EOF_CHAR)
|
||||
break;
|
||||
}
|
||||
return _token;
|
||||
}
|
||||
|
||||
protected ref const(Token) parseOp(TokenType op) {
|
||||
_token.type = op;
|
||||
skipChar();
|
||||
return _token;
|
||||
}
|
||||
|
||||
/// get next token
|
||||
ref const(Token) nextToken() {
|
||||
setTokenStart();
|
||||
dchar ch = peekChar();
|
||||
if (ch == EOF_CHAR)
|
||||
return parseEof();
|
||||
if (ch == EOL_CHAR)
|
||||
return parseEol();
|
||||
if (ch == ' ' || ch == '\t')
|
||||
return parseWhiteSpace();
|
||||
if (ch == '\"')
|
||||
return parseString();
|
||||
if (isAlpha(ch))
|
||||
return parseIdent();
|
||||
if (isNum(ch))
|
||||
return parseNumber();
|
||||
if (ch == '.' && isNum(peekNextChar()))
|
||||
return parseFloating(0);
|
||||
if (ch == '/' && peekNextChar() == '/')
|
||||
return parseSingleLineComment();
|
||||
if (ch == '/' && peekNextChar() == '*')
|
||||
return parseMultiLineComment();
|
||||
switch (ch) {
|
||||
case '.': return parseOp(TokenType.dot);
|
||||
case ':': return parseOp(TokenType.colon);
|
||||
case ';': return parseOp(TokenType.semicolon);
|
||||
case ',': return parseOp(TokenType.comma);
|
||||
case '-': return parseOp(TokenType.minus);
|
||||
case '+': return parseOp(TokenType.plus);
|
||||
case '{': return parseOp(TokenType.curlyOpen);
|
||||
case '}': return parseOp(TokenType.curlyClose);
|
||||
case '(': return parseOp(TokenType.open);
|
||||
case ')': return parseOp(TokenType.close);
|
||||
case '[': return parseOp(TokenType.squareOpen);
|
||||
case ']': return parseOp(TokenType.squareClose);
|
||||
default:
|
||||
return parseError();
|
||||
}
|
||||
}
|
||||
|
||||
string getContextSource() {
|
||||
string s = toUTF8(_lineText);
|
||||
if (_pos == 0)
|
||||
return " near `^^^" ~ s[0..min($,30)] ~ "`";
|
||||
if (_pos >= _len)
|
||||
return " near `" ~ s[max(_len - 30, 0) .. $] ~ "^^^`";
|
||||
return " near `" ~ s[max(_pos - 15, 0) .. _pos] ~ "^^^" ~ s[_pos .. min(_pos + 15, $)] ~ "`";
|
||||
}
|
||||
|
||||
void emitError(string msg) {
|
||||
throw new ParserException(msg ~ getContextSource(), _filename, _token.line, _token.pos);
|
||||
}
|
||||
|
||||
void emitUnknownPropertyError(string objectName, string propName) {
|
||||
throw new UnknownPropertyException("Unknown property " ~ objectName ~ "." ~ propName ~ getContextSource(), objectName, propName, _filename, _token.line, _token.pos);
|
||||
}
|
||||
|
||||
void emitUnknownObjectError(string objectName) {
|
||||
throw new UnknownWidgetException("Unknown widget type " ~ objectName ~ getContextSource(), objectName, _filename, _token.line, _token.pos);
|
||||
}
|
||||
|
||||
void emitError(string msg, ref const Token token) {
|
||||
throw new ParserException(msg, _filename, token.line, token.pos);
|
||||
}
|
||||
}
|
||||
|
||||
class MLParser {
|
||||
protected string _code;
|
||||
protected string _filename;
|
||||
protected bool _ownContext;
|
||||
protected Widget _context;
|
||||
protected Widget _currentWidget;
|
||||
protected Tokenizer _tokenizer;
|
||||
protected Collection!Widget _treeStack;
|
||||
|
||||
protected this(string code, string filename = "", Widget context = null) {
|
||||
_code = code;
|
||||
_filename = filename;
|
||||
_context = context;
|
||||
_tokenizer = new Tokenizer(code, filename);
|
||||
}
|
||||
|
||||
protected Token _token;
|
||||
|
||||
/// move to next token
|
||||
protected void nextToken() {
|
||||
_token = _tokenizer.nextToken();
|
||||
Log.d("parsed token: ", _token.type, " ", _token.line, ":", _token.pos, " ", _token.text);
|
||||
}
|
||||
|
||||
/// throw exception if current token is eof
|
||||
protected void checkNoEof() {
|
||||
if (_token.type == TokenType.eof)
|
||||
error("unexpected end of file");
|
||||
}
|
||||
|
||||
/// move to next token, throw exception if eof
|
||||
protected void nextTokenNoEof() {
|
||||
nextToken();
|
||||
checkNoEof();
|
||||
}
|
||||
|
||||
protected void skipWhitespaceAndEols() {
|
||||
for (;;) {
|
||||
if (_token.type != TokenType.eol && _token.type != TokenType.whitespace && _token.type != TokenType.comment)
|
||||
break;
|
||||
nextToken();
|
||||
}
|
||||
if (_token.type == TokenType.error)
|
||||
error("error while parsing ML code");
|
||||
}
|
||||
|
||||
protected void skipWhitespaceAndEolsNoEof() {
|
||||
skipWhitespaceAndEols();
|
||||
checkNoEof();
|
||||
}
|
||||
|
||||
protected void skipWhitespaceNoEof() {
|
||||
skipWhitespace();
|
||||
checkNoEof();
|
||||
}
|
||||
|
||||
protected void skipWhitespace() {
|
||||
for (;;) {
|
||||
if (_token.type != TokenType.whitespace && _token.type != TokenType.comment)
|
||||
break;
|
||||
nextToken();
|
||||
}
|
||||
if (_token.type == TokenType.error)
|
||||
error("error while parsing ML code");
|
||||
}
|
||||
|
||||
protected void error(string msg) {
|
||||
_tokenizer.emitError(msg);
|
||||
}
|
||||
|
||||
protected void unknownObjectError(string objectName) {
|
||||
_tokenizer.emitUnknownObjectError(objectName);
|
||||
}
|
||||
|
||||
protected void unknownPropertyError(string objectName, string propName) {
|
||||
_tokenizer.emitUnknownPropertyError(objectName, propName);
|
||||
}
|
||||
|
||||
Widget createWidget(string name) {
|
||||
auto metadata = findWidgetMetadata(name);
|
||||
if (!metadata)
|
||||
error("Cannot create widget " ~ name ~ " : unregistered widget class");
|
||||
return metadata.create();
|
||||
}
|
||||
|
||||
protected void createContext(string name) {
|
||||
if (_context)
|
||||
error("Context widget is already specified, but identifier " ~ name ~ " is found");
|
||||
_context = createWidget(name);
|
||||
_ownContext = true;
|
||||
}
|
||||
|
||||
protected int applySuffix(int value, string suffix) {
|
||||
if (suffix.length > 0) {
|
||||
if (suffix.equal("px")) {
|
||||
// do nothing, value is in px by default
|
||||
} else if (suffix.equal("pt")) {
|
||||
value = makePointSize(value);
|
||||
} else if (suffix.equal("%")) {
|
||||
value = makePercentSize(value);
|
||||
} else
|
||||
error("unknown number suffix: " ~ suffix);
|
||||
}
|
||||
return value;
|
||||
}
|
||||
|
||||
protected void setIntProperty(string propName, int value, string suffix = null) {
|
||||
value = applySuffix(value, suffix);
|
||||
if (!_currentWidget.setIntProperty(propName, value))
|
||||
error("unknown int property " ~ propName);
|
||||
}
|
||||
|
||||
protected void setBoolProperty(string propName, bool value) {
|
||||
if (!_currentWidget.setBoolProperty(propName, value))
|
||||
error("unknown int property " ~ propName);
|
||||
}
|
||||
|
||||
protected void setFloatProperty(string propName, double value) {
|
||||
if (!_currentWidget.setDoubleProperty(propName, value))
|
||||
error("unknown double property " ~ propName);
|
||||
}
|
||||
|
||||
protected void setRectProperty(string propName, Rect value) {
|
||||
if (!_currentWidget.setRectProperty(propName, value))
|
||||
error("unknown Rect property " ~ propName);
|
||||
}
|
||||
|
||||
protected void setStringProperty(string propName, string value) {
|
||||
if (propName.equal("id") || propName.equal("styleId") || propName.equal("backgroundImageId")) {
|
||||
if (!_currentWidget.setStringProperty(propName, value))
|
||||
error("cannot set " ~ propName ~ " property for widget");
|
||||
return;
|
||||
}
|
||||
|
||||
dstring v = toUTF32(value);
|
||||
if (!_currentWidget.setDstringProperty(propName, v)) {
|
||||
if (!_currentWidget.setStringProperty(propName, value))
|
||||
error("unknown string property " ~ propName);
|
||||
}
|
||||
}
|
||||
|
||||
protected void setIdentProperty(string propName, string value) {
|
||||
if (propName.equal("id") || propName.equal("styleId") || propName.equal("backgroundImageId")) {
|
||||
if (!_currentWidget.setStringProperty(propName, value))
|
||||
error("cannot set id property for widget");
|
||||
return;
|
||||
}
|
||||
|
||||
if (value.equal("true"))
|
||||
setBoolProperty(propName, true);
|
||||
else if (value.equal("false"))
|
||||
setBoolProperty(propName, false);
|
||||
else if (value.equal("FILL") || value.equal("FILL_PARENT"))
|
||||
setIntProperty(propName, FILL_PARENT);
|
||||
else if (value.equal("WRAP") || value.equal("WRAP_CONTENT"))
|
||||
setIntProperty(propName, WRAP_CONTENT);
|
||||
else if (!_currentWidget.setStringProperty(propName, value))
|
||||
error("unknown ident property " ~ propName);
|
||||
}
|
||||
|
||||
protected void parseRectProperty(string propName) {
|
||||
// current token is Rect
|
||||
int[4] values = [0, 0, 0, 0];
|
||||
nextToken();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
if (_token.type != TokenType.curlyOpen)
|
||||
error("{ expected after Rect");
|
||||
nextToken();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
int index = 0;
|
||||
for (;;) {
|
||||
if (_token.type == TokenType.curlyClose)
|
||||
break;
|
||||
if (_token.type == TokenType.integer) {
|
||||
if (index >= 4)
|
||||
error("too many values in Rect");
|
||||
int n = applySuffix(_token.intvalue, _token.text);
|
||||
values[index++] = n;
|
||||
nextToken();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
if (_token.type == TokenType.comma || _token.type == TokenType.semicolon) {
|
||||
nextToken();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
}
|
||||
} else if (_token.type == TokenType.ident) {
|
||||
string name = _token.text;
|
||||
nextToken();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
if (_token.type != TokenType.colon)
|
||||
error(": expected after property name " ~ name ~ " in Rect definition");
|
||||
nextToken();
|
||||
skipWhitespaceNoEof();
|
||||
if (_token.type != TokenType.integer)
|
||||
error("integer expected as Rect property value");
|
||||
int n = applySuffix(_token.intvalue, _token.text);
|
||||
|
||||
if (name.equal("left"))
|
||||
values[0] = n;
|
||||
else if (name.equal("top"))
|
||||
values[1] = n;
|
||||
else if (name.equal("right"))
|
||||
values[2] = n;
|
||||
else if (name.equal("bottom"))
|
||||
values[3] = n;
|
||||
else
|
||||
error("unknown property " ~ name ~ " in Rect");
|
||||
|
||||
nextToken();
|
||||
skipWhitespaceNoEof();
|
||||
if (_token.type == TokenType.comma || _token.type == TokenType.semicolon) {
|
||||
nextToken();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
}
|
||||
} else {
|
||||
error("invalid Rect definition");
|
||||
}
|
||||
|
||||
}
|
||||
setRectProperty(propName, Rect(values[0], values[1], values[2], values[3]));
|
||||
}
|
||||
|
||||
protected void parseProperty() {
|
||||
if (_token.type != TokenType.ident)
|
||||
error("identifier expected");
|
||||
string propName = _token.text;
|
||||
nextToken();
|
||||
skipWhitespaceNoEof();
|
||||
if (_token.type == TokenType.colon) { // :
|
||||
nextTokenNoEof(); // skip :
|
||||
skipWhitespaceNoEof();
|
||||
if (_token.type == TokenType.integer)
|
||||
setIntProperty(propName, _token.intvalue, _token.text);
|
||||
else if (_token.type == TokenType.minus || _token.type == TokenType.plus) {
|
||||
int sign = _token.type == TokenType.minus ? -1 : 1;
|
||||
nextTokenNoEof(); // skip :
|
||||
skipWhitespaceNoEof();
|
||||
if (_token.type == TokenType.integer) {
|
||||
setIntProperty(propName, _token.intvalue * sign, _token.text);
|
||||
} else if (_token.type == TokenType.floating) {
|
||||
setFloatProperty(propName, _token.floatvalue * sign);
|
||||
} else
|
||||
error("number expected after + and -");
|
||||
} else if (_token.type == TokenType.floating)
|
||||
setFloatProperty(propName, _token.floatvalue);
|
||||
else if (_token.type == TokenType.str)
|
||||
setStringProperty(propName, _token.text);
|
||||
else if (_token.type == TokenType.ident) {
|
||||
if (_token.text.equal("Rect")) {
|
||||
parseRectProperty(propName);
|
||||
} else {
|
||||
setIdentProperty(propName, _token.text);
|
||||
}
|
||||
} else
|
||||
error("int, float, string or identifier are expected as property value");
|
||||
nextTokenNoEof();
|
||||
skipWhitespaceNoEof();
|
||||
if (_token.type == TokenType.semicolon) {
|
||||
// separated by ;
|
||||
nextTokenNoEof();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
return;
|
||||
} else if (_token.type == TokenType.eol) {
|
||||
nextTokenNoEof();
|
||||
skipWhitespaceAndEolsNoEof();
|
||||
return;
|
||||
} else if (_token.type == TokenType.curlyClose) {
|
||||
// it was last property in object
|
||||
return;
|
||||
}
|
||||
error("; eol or } expected after property definition");
|
||||
} else if (_token.type == TokenType.curlyOpen) { // { -- start of object
|
||||
Widget s = createWidget(propName);
|
||||
parseWidgetProperties(s);
|
||||
} else {
|
||||
error(": or { expected after identifier");
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
protected void parseWidgetProperties(Widget w) {
|
||||
if (_token.type != TokenType.curlyOpen) // {
|
||||
error("{ is expected");
|
||||
_treeStack.pushBack(w);
|
||||
if (_currentWidget)
|
||||
_currentWidget.addChild(w);
|
||||
_currentWidget = w;
|
||||
nextToken(); // skip {
|
||||
skipWhitespaceAndEols();
|
||||
for (;;) {
|
||||
checkNoEof();
|
||||
if (_token.type == TokenType.curlyClose) // end of object's internals
|
||||
break;
|
||||
parseProperty();
|
||||
}
|
||||
if (_token.type != TokenType.curlyClose) // {
|
||||
error("{ is expected");
|
||||
nextToken(); // skip }
|
||||
skipWhitespaceAndEols();
|
||||
_treeStack.popBack();
|
||||
_currentWidget = _treeStack.peekBack();
|
||||
}
|
||||
|
||||
protected Widget parse() {
|
||||
try {
|
||||
nextToken();
|
||||
skipWhitespaceAndEols();
|
||||
if (_token.type == TokenType.ident) {
|
||||
createContext(_token.text);
|
||||
nextToken();
|
||||
skipWhitespaceAndEols();
|
||||
}
|
||||
if (_token.type != TokenType.curlyOpen) // {
|
||||
error("{ is expected");
|
||||
if (!_context)
|
||||
error("No context widget is specified!");
|
||||
parseWidgetProperties(_context);
|
||||
|
||||
skipWhitespaceAndEols();
|
||||
if (_token.type != TokenType.eof) // {
|
||||
error("end of file expected");
|
||||
return _context;
|
||||
} catch (Exception e) {
|
||||
Log.e("exception while parsing ML", e);
|
||||
if (_context && _ownContext)
|
||||
destroy(_context);
|
||||
_context = null;
|
||||
throw e;
|
||||
}
|
||||
}
|
||||
|
||||
~this() {
|
||||
destroy(_tokenizer);
|
||||
_tokenizer = null;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
/// Parse DlangUI ML code
|
||||
public Widget parseML(string code, string filename = "", Widget context = null) {
|
||||
MLParser parser = new MLParser(code, filename);
|
||||
scope(exit) destroy(parser);
|
||||
return parser.parse();
|
||||
}
|
||||
|
||||
/// tokenize source into array of tokens (excluding EOF)
|
||||
public Token[] tokenizeML(const(dstring[]) lines) {
|
||||
string code = toUTF8(join(lines, "\n"));
|
||||
return tokenizeML(code);
|
||||
}
|
||||
|
||||
/// tokenize source into array of tokens (excluding EOF)
|
||||
public Token[] tokenizeML(string code) {
|
||||
Token[] res;
|
||||
auto tokenizer = new Tokenizer(code, "");
|
||||
for (;;) {
|
||||
auto token = tokenizer.nextToken();
|
||||
if (token.type == TokenType.eof)
|
||||
break;
|
||||
res ~= token;
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
|
@ -73,7 +73,7 @@ public import dlangui.widgets.statusline;
|
|||
public import dlangui.widgets.docks;
|
||||
public import dlangui.widgets.toolbars;
|
||||
public import dlangui.platforms.common.platform;
|
||||
public import dlangui.core.parser;
|
||||
public import dlangui.dml.parser;
|
||||
|
||||
// some useful imports from Phobos
|
||||
public import std.algorithm : equal;
|
||||
|
|
|
|||
Loading…
Reference in New Issue