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-rw-r--r--src/LexYAML.cxx314
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diff --git a/src/LexYAML.cxx b/src/LexYAML.cxx
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-// Scintilla source code edit control
-/** @file LexYAML.cxx
- ** Lexer for YAML.
- **/
-// Copyright 2003- by Sean O'Dell <sean@celsoft.com>
-// The License.txt file describes the conditions under which this software may be distributed.
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdarg.h>
-
-#include "Platform.h"
-
-#include "PropSet.h"
-#include "Accessor.h"
-#include "StyleContext.h"
-#include "KeyWords.h"
-#include "Scintilla.h"
-#include "SciLexer.h"
-
-#ifdef SCI_NAMESPACE
-using namespace Scintilla;
-#endif
-
-static const char * const yamlWordListDesc[] = {
- "Keywords",
- 0
-};
-
-static inline bool AtEOL(Accessor &styler, unsigned int i) {
- return (styler[i] == '\n') ||
- ((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n'));
-}
-
-static unsigned int SpaceCount(char* lineBuffer) {
- if (lineBuffer == NULL)
- return 0;
-
- char* headBuffer = lineBuffer;
-
- while (*headBuffer == ' ')
- headBuffer++;
-
- return headBuffer - lineBuffer;
-}
-
-#define YAML_STATE_BITSIZE 16
-#define YAML_STATE_MASK (0xFFFF0000)
-#define YAML_STATE_DOCUMENT (1 << YAML_STATE_BITSIZE)
-#define YAML_STATE_VALUE (2 << YAML_STATE_BITSIZE)
-#define YAML_STATE_COMMENT (3 << YAML_STATE_BITSIZE)
-#define YAML_STATE_TEXT_PARENT (4 << YAML_STATE_BITSIZE)
-#define YAML_STATE_TEXT (5 << YAML_STATE_BITSIZE)
-
-static void ColouriseYAMLLine(
- char *lineBuffer,
- unsigned int currentLine,
- unsigned int lengthLine,
- unsigned int startLine,
- unsigned int endPos,
- WordList &keywords,
- Accessor &styler) {
-
- unsigned int i = 0;
- bool bInQuotes = false;
- unsigned int indentAmount = SpaceCount(lineBuffer);
-
- if (currentLine > 0) {
- int parentLineState = styler.GetLineState(currentLine - 1);
-
- if ((parentLineState&YAML_STATE_MASK) == YAML_STATE_TEXT || (parentLineState&YAML_STATE_MASK) == YAML_STATE_TEXT_PARENT) {
- unsigned int parentIndentAmount = parentLineState&(~YAML_STATE_MASK);
- if (indentAmount > parentIndentAmount) {
- styler.SetLineState(currentLine, YAML_STATE_TEXT | parentIndentAmount);
- styler.ColourTo(endPos, SCE_YAML_TEXT);
- return;
- }
- }
- }
- styler.SetLineState(currentLine, 0);
- if (strncmp(lineBuffer, "---", 3) == 0) { // Document marker
- styler.SetLineState(currentLine, YAML_STATE_DOCUMENT);
- styler.ColourTo(endPos, SCE_YAML_DOCUMENT);
- return;
- }
- // Skip initial spaces
- while ((i < lengthLine) && lineBuffer[i] == ' ') { // YAML always uses space, never TABS or anything else
- i++;
- }
- if (lineBuffer[i] == '\t') { // if we skipped all spaces, and we are NOT inside a text block, this is wrong
- styler.ColourTo(endPos, SCE_YAML_ERROR);
- return;
- }
- if (lineBuffer[i] == '#') { // Comment
- styler.SetLineState(currentLine, YAML_STATE_COMMENT);
- styler.ColourTo(endPos, SCE_YAML_COMMENT);
- return;
- }
- while (i < lengthLine) {
- if (lineBuffer[i] == '\'' || lineBuffer[i] == '\"') {
- bInQuotes = !bInQuotes;
- } else if (lineBuffer[i] == ':' && !bInQuotes) {
- styler.ColourTo(startLine + i - 1, SCE_YAML_IDENTIFIER);
- styler.ColourTo(startLine + i, SCE_YAML_OPERATOR);
- // Non-folding scalar
- i++;
- while ((i < lengthLine) && isspacechar(lineBuffer[i]))
- i++;
- unsigned int endValue = lengthLine - 1;
- while ((endValue >= i) && isspacechar(lineBuffer[endValue]))
- endValue--;
- lineBuffer[endValue + 1] = '\0';
- if (lineBuffer[i] == '|' || lineBuffer[i] == '>') {
- i++;
- if (lineBuffer[i] == '+' || lineBuffer[i] == '-')
- i++;
- while ((i < lengthLine) && isspacechar(lineBuffer[i]))
- i++;
- if (lineBuffer[i] == '\0') {
- styler.SetLineState(currentLine, YAML_STATE_TEXT_PARENT | indentAmount);
- styler.ColourTo(endPos, SCE_YAML_DEFAULT);
- return;
- } else if (lineBuffer[i] == '#') {
- styler.SetLineState(currentLine, YAML_STATE_TEXT_PARENT | indentAmount);
- styler.ColourTo(startLine + i - 1, SCE_YAML_DEFAULT);
- styler.ColourTo(endPos, SCE_YAML_COMMENT);
- return;
- } else {
- styler.ColourTo(endPos, SCE_YAML_ERROR);
- return;
- }
- } else if (lineBuffer[i] == '#') {
- styler.ColourTo(startLine + i - 1, SCE_YAML_DEFAULT);
- styler.ColourTo(endPos, SCE_YAML_COMMENT);
- return;
- }
- styler.SetLineState(currentLine, YAML_STATE_VALUE);
- if (lineBuffer[i] == '&' || lineBuffer[i] == '*') {
- styler.ColourTo(endPos, SCE_YAML_REFERENCE);
- return;
- }
- if (keywords.InList(&lineBuffer[i])) { // Convertible value (true/false, etc.)
- styler.ColourTo(endPos, SCE_YAML_KEYWORD);
- return;
- } else {
- unsigned int i2 = i;
- while ((i < lengthLine) && lineBuffer[i]) {
- if (!(isascii(lineBuffer[i]) && isdigit(lineBuffer[i])) && lineBuffer[i] != '-' && lineBuffer[i] != '.' && lineBuffer[i] != ',') {
- styler.ColourTo(endPos, SCE_YAML_DEFAULT);
- return;
- }
- i++;
- }
- if (i > i2) {
- styler.ColourTo(endPos, SCE_YAML_NUMBER);
- return;
- }
- }
- break; // shouldn't get here, but just in case, the rest of the line is coloured the default
- }
- i++;
- }
- styler.ColourTo(endPos, SCE_YAML_DEFAULT);
-}
-
-static void ColouriseYAMLDoc(unsigned int startPos, int length, int, WordList *keywordLists[], Accessor &styler) {
- char lineBuffer[1024];
- styler.StartAt(startPos);
- styler.StartSegment(startPos);
- unsigned int linePos = 0;
- unsigned int startLine = startPos;
- unsigned int endPos = startPos + length;
- unsigned int maxPos = styler.Length();
- unsigned int lineCurrent = styler.GetLine(startPos);
-
- for (unsigned int i = startPos; i < maxPos && i < endPos; i++) {
- lineBuffer[linePos++] = styler[i];
- if (AtEOL(styler, i) || (linePos >= sizeof(lineBuffer) - 1)) {
- // End of line (or of line buffer) met, colourise it
- lineBuffer[linePos] = '\0';
- ColouriseYAMLLine(lineBuffer, lineCurrent, linePos, startLine, i, *keywordLists[0], styler);
- linePos = 0;
- startLine = i + 1;
- lineCurrent++;
- }
- }
- if (linePos > 0) { // Last line does not have ending characters
- ColouriseYAMLLine(lineBuffer, lineCurrent, linePos, startLine, startPos + length - 1, *keywordLists[0], styler);
- }
-}
-
-static bool IsCommentLine(int line, Accessor &styler) {
- int pos = styler.LineStart(line);
- if (styler[pos] == '#')
- return true;
- return false;
-}
-
-static void FoldYAMLDoc(unsigned int startPos, int length, int /*initStyle - unused*/,
- WordList *[], Accessor &styler) {
- const int maxPos = startPos + length;
- const int maxLines = styler.GetLine(maxPos - 1); // Requested last line
- const int docLines = styler.GetLine(styler.Length() - 1); // Available last line
- const bool foldComment = styler.GetPropertyInt("fold.comment.yaml") != 0;
-
- // Backtrack to previous non-blank line so we can determine indent level
- // for any white space lines
- // and so we can fix any preceding fold level (which is why we go back
- // at least one line in all cases)
- int spaceFlags = 0;
- int lineCurrent = styler.GetLine(startPos);
- int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, NULL);
- while (lineCurrent > 0) {
- lineCurrent--;
- indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, NULL);
- if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG) &&
- (!IsCommentLine(lineCurrent, styler)))
- break;
- }
- int indentCurrentLevel = indentCurrent & SC_FOLDLEVELNUMBERMASK;
-
- // Set up initial loop state
- int prevComment = 0;
- if (lineCurrent >= 1)
- prevComment = foldComment && IsCommentLine(lineCurrent - 1, styler);
-
- // Process all characters to end of requested range
- // or comment that hangs over the end of the range. Cap processing in all cases
- // to end of document (in case of unclosed comment at end).
- while ((lineCurrent <= docLines) && ((lineCurrent <= maxLines) || prevComment)) {
-
- // Gather info
- int lev = indentCurrent;
- int lineNext = lineCurrent + 1;
- int indentNext = indentCurrent;
- if (lineNext <= docLines) {
- // Information about next line is only available if not at end of document
- indentNext = styler.IndentAmount(lineNext, &spaceFlags, NULL);
- }
- const int comment = foldComment && IsCommentLine(lineCurrent, styler);
- const int comment_start = (comment && !prevComment && (lineNext <= docLines) &&
- IsCommentLine(lineNext, styler) && (lev > SC_FOLDLEVELBASE));
- const int comment_continue = (comment && prevComment);
- if (!comment)
- indentCurrentLevel = indentCurrent & SC_FOLDLEVELNUMBERMASK;
- if (indentNext & SC_FOLDLEVELWHITEFLAG)
- indentNext = SC_FOLDLEVELWHITEFLAG | indentCurrentLevel;
-
- if (comment_start) {
- // Place fold point at start of a block of comments
- lev |= SC_FOLDLEVELHEADERFLAG;
- } else if (comment_continue) {
- // Add level to rest of lines in the block
- lev = lev + 1;
- }
-
- // Skip past any blank lines for next indent level info; we skip also
- // comments (all comments, not just those starting in column 0)
- // which effectively folds them into surrounding code rather
- // than screwing up folding.
-
- while ((lineNext < docLines) &&
- ((indentNext & SC_FOLDLEVELWHITEFLAG) ||
- (lineNext <= docLines && IsCommentLine(lineNext, styler)))) {
-
- lineNext++;
- indentNext = styler.IndentAmount(lineNext, &spaceFlags, NULL);
- }
-
- const int levelAfterComments = indentNext & SC_FOLDLEVELNUMBERMASK;
- const int levelBeforeComments = Platform::Maximum(indentCurrentLevel,levelAfterComments);
-
- // Now set all the indent levels on the lines we skipped
- // Do this from end to start. Once we encounter one line
- // which is indented more than the line after the end of
- // the comment-block, use the level of the block before
-
- int skipLine = lineNext;
- int skipLevel = levelAfterComments;
-
- while (--skipLine > lineCurrent) {
- int skipLineIndent = styler.IndentAmount(skipLine, &spaceFlags, NULL);
-
- if ((skipLineIndent & SC_FOLDLEVELNUMBERMASK) > levelAfterComments)
- skipLevel = levelBeforeComments;
-
- int whiteFlag = skipLineIndent & SC_FOLDLEVELWHITEFLAG;
-
- styler.SetLevel(skipLine, skipLevel | whiteFlag);
- }
-
- // Set fold header on non-comment line
- if (!comment && !(indentCurrent & SC_FOLDLEVELWHITEFLAG) ) {
- if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK))
- lev |= SC_FOLDLEVELHEADERFLAG;
- }
-
- // Keep track of block comment state of previous line
- prevComment = comment_start || comment_continue;
-
- // Set fold level for this line and move to next line
- styler.SetLevel(lineCurrent, lev);
- indentCurrent = indentNext;
- lineCurrent = lineNext;
- }
-
- // NOTE: Cannot set level of last line here because indentCurrent doesn't have
- // header flag set; the loop above is crafted to take care of this case!
- //styler.SetLevel(lineCurrent, indentCurrent);
-}
-
-LexerModule lmYAML(SCLEX_YAML, ColouriseYAMLDoc, "yaml", FoldYAMLDoc, yamlWordListDesc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-12 22:53:35 +0000