522 lines
15 KiB
C++
522 lines
15 KiB
C++
// Scintilla source code edit control
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/** @file LexECL.cxx
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** Lexer for ECL.
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**/
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// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#ifdef _MSC_VER
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#pragma warning(disable: 4786)
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#endif
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#ifdef __BORLANDC__
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// Borland C++ displays warnings in vector header without this
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#pragma option -w-ccc -w-rch
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#endif
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#include <string>
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#include <vector>
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#include <map>
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#include <algorithm>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "PropSetSimple.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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#include "OptionSet.h"
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#define SET_LOWER "abcdefghijklmnopqrstuvwxyz"
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#define SET_UPPER "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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#define SET_DIGITS "0123456789"
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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static bool IsSpaceEquiv(int state) {
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switch (state) {
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case SCE_ECL_DEFAULT:
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case SCE_ECL_COMMENT:
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case SCE_ECL_COMMENTLINE:
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case SCE_ECL_COMMENTLINEDOC:
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case SCE_ECL_COMMENTDOCKEYWORD:
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case SCE_ECL_COMMENTDOCKEYWORDERROR:
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case SCE_ECL_COMMENTDOC:
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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 void ColouriseEclDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
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Accessor &styler) {
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WordList &keywords0 = *keywordlists[0];
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WordList &keywords1 = *keywordlists[1];
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WordList &keywords2 = *keywordlists[2];
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WordList &keywords3 = *keywordlists[3]; //Value Types
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WordList &keywords4 = *keywordlists[4];
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WordList &keywords5 = *keywordlists[5];
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WordList &keywords6 = *keywordlists[6]; //Javadoc Tags
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WordList cplusplus;
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cplusplus.Set("beginc endc");
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bool stylingWithinPreprocessor = false;
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CharacterSet setOKBeforeRE(CharacterSet::setNone, "(=,");
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CharacterSet setDoxygen(CharacterSet::setLower, "$@\\&<>#{}[]");
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CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);
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CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
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CharacterSet setQualified(CharacterSet::setNone, "uUxX");
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int chPrevNonWhite = ' ';
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int visibleChars = 0;
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bool lastWordWasUUID = false;
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int styleBeforeDCKeyword = SCE_ECL_DEFAULT;
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bool continuationLine = false;
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if (initStyle == SCE_ECL_PREPROCESSOR) {
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// Set continuationLine if last character of previous line is '\'
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int lineCurrent = styler.GetLine(startPos);
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if (lineCurrent > 0) {
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int chBack = styler.SafeGetCharAt(startPos-1, 0);
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int chBack2 = styler.SafeGetCharAt(startPos-2, 0);
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int lineEndChar = '!';
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if (chBack2 == '\r' && chBack == '\n') {
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lineEndChar = styler.SafeGetCharAt(startPos-3, 0);
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} else if (chBack == '\n' || chBack == '\r') {
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lineEndChar = chBack2;
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}
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continuationLine = lineEndChar == '\\';
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}
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}
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// look back to set chPrevNonWhite properly for better regex colouring
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if (startPos > 0) {
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int back = startPos;
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while (--back && IsSpaceEquiv(styler.StyleAt(back)))
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;
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if (styler.StyleAt(back) == SCE_ECL_OPERATOR) {
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chPrevNonWhite = styler.SafeGetCharAt(back);
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}
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}
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StyleContext sc(startPos, length, initStyle, styler);
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for (; sc.More(); sc.Forward()) {
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if (sc.atLineStart) {
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if (sc.state == SCE_ECL_STRING) {
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// Prevent SCE_ECL_STRINGEOL from leaking back to previous line which
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// ends with a line continuation by locking in the state upto this position.
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sc.SetState(SCE_ECL_STRING);
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}
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// Reset states to begining of colourise so no surprises
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// if different sets of lines lexed.
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visibleChars = 0;
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lastWordWasUUID = false;
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}
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// Handle line continuation generically.
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if (sc.ch == '\\') {
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if (sc.chNext == '\n' || sc.chNext == '\r') {
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sc.Forward();
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if (sc.ch == '\r' && sc.chNext == '\n') {
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sc.Forward();
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}
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continuationLine = true;
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continue;
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}
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}
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// Determine if the current state should terminate.
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switch (sc.state) {
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case SCE_ECL_ADDED:
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case SCE_ECL_DELETED:
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case SCE_ECL_CHANGED:
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case SCE_ECL_MOVED:
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if (sc.atLineStart)
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sc.SetState(SCE_ECL_DEFAULT);
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break;
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case SCE_ECL_OPERATOR:
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sc.SetState(SCE_ECL_DEFAULT);
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break;
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case SCE_ECL_NUMBER:
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// We accept almost anything because of hex. and number suffixes
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if (!setWord.Contains(sc.ch)) {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_IDENTIFIER:
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if (!setWord.Contains(sc.ch) || (sc.ch == '.')) {
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char s[1000];
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sc.GetCurrentLowered(s, sizeof(s));
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if (keywords0.InList(s)) {
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lastWordWasUUID = strcmp(s, "uuid") == 0;
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sc.ChangeState(SCE_ECL_WORD0);
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} else if (keywords1.InList(s)) {
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sc.ChangeState(SCE_ECL_WORD1);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_ECL_WORD2);
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} else if (keywords4.InList(s)) {
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sc.ChangeState(SCE_ECL_WORD4);
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} else if (keywords5.InList(s)) {
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sc.ChangeState(SCE_ECL_WORD5);
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}
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else //Data types are of from KEYWORD##
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{
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int i = static_cast<int>(strlen(s)) - 1;
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while(i >= 0 && (isdigit(s[i]) || s[i] == '_'))
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--i;
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char s2[1000];
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strncpy(s2, s, i + 1);
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s2[i + 1] = 0;
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if (keywords3.InList(s2)) {
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sc.ChangeState(SCE_ECL_WORD3);
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}
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}
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sc.SetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_PREPROCESSOR:
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if (sc.atLineStart && !continuationLine) {
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sc.SetState(SCE_ECL_DEFAULT);
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} else if (stylingWithinPreprocessor) {
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if (IsASpace(sc.ch)) {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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} else {
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if (sc.Match('/', '*') || sc.Match('/', '/')) {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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}
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break;
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case SCE_ECL_COMMENT:
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if (sc.Match('*', '/')) {
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sc.Forward();
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sc.ForwardSetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_COMMENTDOC:
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if (sc.Match('*', '/')) {
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sc.Forward();
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sc.ForwardSetState(SCE_ECL_DEFAULT);
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} else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
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// Verify that we have the conditions to mark a comment-doc-keyword
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if ((IsASpace(sc.chPrev) || sc.chPrev == '*') && (!IsASpace(sc.chNext))) {
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styleBeforeDCKeyword = SCE_ECL_COMMENTDOC;
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sc.SetState(SCE_ECL_COMMENTDOCKEYWORD);
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}
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}
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break;
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case SCE_ECL_COMMENTLINE:
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if (sc.atLineStart) {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_COMMENTLINEDOC:
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if (sc.atLineStart) {
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sc.SetState(SCE_ECL_DEFAULT);
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} else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
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// Verify that we have the conditions to mark a comment-doc-keyword
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if ((IsASpace(sc.chPrev) || sc.chPrev == '/' || sc.chPrev == '!') && (!IsASpace(sc.chNext))) {
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styleBeforeDCKeyword = SCE_ECL_COMMENTLINEDOC;
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sc.SetState(SCE_ECL_COMMENTDOCKEYWORD);
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}
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}
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break;
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case SCE_ECL_COMMENTDOCKEYWORD:
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if ((styleBeforeDCKeyword == SCE_ECL_COMMENTDOC) && sc.Match('*', '/')) {
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sc.ChangeState(SCE_ECL_COMMENTDOCKEYWORDERROR);
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sc.Forward();
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sc.ForwardSetState(SCE_ECL_DEFAULT);
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} else if (!setDoxygen.Contains(sc.ch)) {
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char s[1000];
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sc.GetCurrentLowered(s, sizeof(s));
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if (!IsASpace(sc.ch) || !keywords6.InList(s+1)) {
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sc.ChangeState(SCE_ECL_COMMENTDOCKEYWORDERROR);
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}
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sc.SetState(styleBeforeDCKeyword);
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}
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break;
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case SCE_ECL_STRING:
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if (sc.atLineEnd) {
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sc.ChangeState(SCE_ECL_STRINGEOL);
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} else if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\"') {
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sc.ForwardSetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_CHARACTER:
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if (sc.atLineEnd) {
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sc.ChangeState(SCE_ECL_STRINGEOL);
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} else if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\'') {
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sc.ForwardSetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_REGEX:
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if (sc.atLineStart) {
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sc.SetState(SCE_ECL_DEFAULT);
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} else if (sc.ch == '/') {
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sc.Forward();
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while ((sc.ch < 0x80) && islower(sc.ch))
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sc.Forward(); // gobble regex flags
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sc.SetState(SCE_ECL_DEFAULT);
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} else if (sc.ch == '\\') {
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// Gobble up the quoted character
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if (sc.chNext == '\\' || sc.chNext == '/') {
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sc.Forward();
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}
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}
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break;
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case SCE_ECL_STRINGEOL:
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if (sc.atLineStart) {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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break;
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case SCE_ECL_VERBATIM:
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if (sc.ch == '\"') {
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if (sc.chNext == '\"') {
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sc.Forward();
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} else {
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sc.ForwardSetState(SCE_ECL_DEFAULT);
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}
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}
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break;
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case SCE_ECL_UUID:
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if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ')') {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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break;
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}
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// Determine if a new state should be entered.
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int lineCurrent = styler.GetLine(sc.currentPos);
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int lineState = styler.GetLineState(lineCurrent);
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if (sc.state == SCE_ECL_DEFAULT) {
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if (lineState) {
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sc.SetState(lineState);
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}
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else if (sc.Match('@', '\"')) {
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sc.SetState(SCE_ECL_VERBATIM);
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sc.Forward();
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} else if (setQualified.Contains(sc.ch) && sc.chNext == '\'') {
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sc.SetState(SCE_ECL_CHARACTER);
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sc.Forward();
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} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
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if (lastWordWasUUID) {
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sc.SetState(SCE_ECL_UUID);
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lastWordWasUUID = false;
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} else {
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sc.SetState(SCE_ECL_NUMBER);
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}
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} else if (setWordStart.Contains(sc.ch) || (sc.ch == '@')) {
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if (lastWordWasUUID) {
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sc.SetState(SCE_ECL_UUID);
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lastWordWasUUID = false;
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} else {
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sc.SetState(SCE_ECL_IDENTIFIER);
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}
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} else if (sc.Match('/', '*')) {
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if (sc.Match("/**") || sc.Match("/*!")) { // Support of Qt/Doxygen doc. style
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sc.SetState(SCE_ECL_COMMENTDOC);
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} else {
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sc.SetState(SCE_ECL_COMMENT);
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}
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sc.Forward(); // Eat the * so it isn't used for the end of the comment
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} else if (sc.Match('/', '/')) {
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if ((sc.Match("///") && !sc.Match("////")) || sc.Match("//!"))
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// Support of Qt/Doxygen doc. style
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sc.SetState(SCE_ECL_COMMENTLINEDOC);
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else
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sc.SetState(SCE_ECL_COMMENTLINE);
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} else if (sc.ch == '/' && setOKBeforeRE.Contains(chPrevNonWhite)) {
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sc.SetState(SCE_ECL_REGEX); // JavaScript's RegEx
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// } else if (sc.ch == '\"') {
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// sc.SetState(SCE_ECL_STRING);
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} else if (sc.ch == '\'') {
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sc.SetState(SCE_ECL_CHARACTER);
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} else if (sc.ch == '#' && visibleChars == 0) {
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// Preprocessor commands are alone on their line
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sc.SetState(SCE_ECL_PREPROCESSOR);
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// Skip whitespace between # and preprocessor word
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do {
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sc.Forward();
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} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
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if (sc.atLineEnd) {
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sc.SetState(SCE_ECL_DEFAULT);
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}
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} else if (isoperator(static_cast<char>(sc.ch))) {
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sc.SetState(SCE_ECL_OPERATOR);
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}
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}
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if (!IsASpace(sc.ch) && !IsSpaceEquiv(sc.state)) {
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chPrevNonWhite = sc.ch;
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visibleChars++;
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}
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continuationLine = false;
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}
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sc.Complete();
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}
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static bool IsStreamCommentStyle(int style) {
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return style == SCE_ECL_COMMENT ||
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style == SCE_ECL_COMMENTDOC ||
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style == SCE_ECL_COMMENTDOCKEYWORD ||
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style == SCE_ECL_COMMENTDOCKEYWORDERROR;
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}
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bool MatchNoCase(Accessor & styler, unsigned int & pos, const char *s) {
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int i=0;
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for (; *s; i++) {
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char compare_char = tolower(*s);
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char styler_char = tolower(styler.SafeGetCharAt(pos+i));
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if (compare_char != styler_char)
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return false;
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s++;
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}
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pos+=i-1;
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return true;
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}
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// Store both the current line's fold level and the next lines in the
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// level store to make it easy to pick up with each increment
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// and to make it possible to fiddle the current level for "} else {".
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static void FoldEclDoc(unsigned int startPos, int length, int initStyle,
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WordList *[], Accessor &styler) {
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bool foldComment = true;
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bool foldPreprocessor = true;
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bool foldCompact = true;
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bool foldAtElse = true;
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unsigned int endPos = startPos + length;
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int visibleChars = 0;
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int lineCurrent = styler.GetLine(startPos);
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int levelCurrent = SC_FOLDLEVELBASE;
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if (lineCurrent > 0)
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levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
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int levelMinCurrent = levelCurrent;
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int levelNext = levelCurrent;
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char chNext = styler[startPos];
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int styleNext = styler.StyleAt(startPos);
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int style = initStyle;
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for (unsigned int i = startPos; i < endPos; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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int stylePrev = style;
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style = styleNext;
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styleNext = styler.StyleAt(i + 1);
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bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
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if (foldComment && IsStreamCommentStyle(style)) {
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if (!IsStreamCommentStyle(stylePrev) && (stylePrev != SCE_ECL_COMMENTLINEDOC)) {
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levelNext++;
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} else if (!IsStreamCommentStyle(styleNext) && (styleNext != SCE_ECL_COMMENTLINEDOC) && !atEOL) {
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// Comments don't end at end of line and the next character may be unstyled.
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levelNext--;
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}
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}
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if (foldComment && (style == SCE_ECL_COMMENTLINE)) {
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if ((ch == '/') && (chNext == '/')) {
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char chNext2 = styler.SafeGetCharAt(i + 2);
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if (chNext2 == '{') {
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levelNext++;
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} else if (chNext2 == '}') {
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levelNext--;
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}
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}
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}
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if (foldPreprocessor && (style == SCE_ECL_PREPROCESSOR)) {
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if (ch == '#') {
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unsigned int j = i + 1;
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while ((j < endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
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j++;
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}
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if (MatchNoCase(styler, j, "region") || MatchNoCase(styler, j, "if")) {
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levelNext++;
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} else if (MatchNoCase(styler, j, "endregion") || MatchNoCase(styler, j, "end")) {
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levelNext--;
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}
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}
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}
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if (style == SCE_ECL_OPERATOR) {
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if (ch == '{') {
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// Measure the minimum before a '{' to allow
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// folding on "} else {"
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if (levelMinCurrent > levelNext) {
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levelMinCurrent = levelNext;
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}
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levelNext++;
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} else if (ch == '}') {
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levelNext--;
|
|
}
|
|
}
|
|
if (style == SCE_ECL_WORD2) {
|
|
if (MatchNoCase(styler, i, "record") || MatchNoCase(styler, i, "transform") || MatchNoCase(styler, i, "type") || MatchNoCase(styler, i, "function") ||
|
|
MatchNoCase(styler, i, "module") || MatchNoCase(styler, i, "service") || MatchNoCase(styler, i, "interface") || MatchNoCase(styler, i, "ifblock") ||
|
|
MatchNoCase(styler, i, "macro") || MatchNoCase(styler, i, "beginc++")) {
|
|
levelNext++;
|
|
} else if (MatchNoCase(styler, i, "endmacro") || MatchNoCase(styler, i, "endc++") || MatchNoCase(styler, i, "end")) {
|
|
levelNext--;
|
|
}
|
|
}
|
|
if (atEOL || (i == endPos-1)) {
|
|
int levelUse = levelCurrent;
|
|
if (foldAtElse) {
|
|
levelUse = levelMinCurrent;
|
|
}
|
|
int lev = levelUse | levelNext << 16;
|
|
if (visibleChars == 0 && foldCompact)
|
|
lev |= SC_FOLDLEVELWHITEFLAG;
|
|
if (levelUse < levelNext)
|
|
lev |= SC_FOLDLEVELHEADERFLAG;
|
|
if (lev != styler.LevelAt(lineCurrent)) {
|
|
styler.SetLevel(lineCurrent, lev);
|
|
}
|
|
lineCurrent++;
|
|
levelCurrent = levelNext;
|
|
levelMinCurrent = levelCurrent;
|
|
if (atEOL && (i == static_cast<unsigned int>(styler.Length()-1))) {
|
|
// There is an empty line at end of file so give it same level and empty
|
|
styler.SetLevel(lineCurrent, (levelCurrent | levelCurrent << 16) | SC_FOLDLEVELWHITEFLAG);
|
|
}
|
|
visibleChars = 0;
|
|
}
|
|
if (!IsASpace(ch))
|
|
visibleChars++;
|
|
}
|
|
}
|
|
|
|
static const char * const EclWordListDesc[] = {
|
|
"Keywords",
|
|
0
|
|
};
|
|
|
|
LexerModule lmECL(
|
|
SCLEX_ECL,
|
|
ColouriseEclDoc,
|
|
"ecl",
|
|
FoldEclDoc,
|
|
EclWordListDesc);
|