**
** Written by Paul Winwood.
** Folder by Alexey Yutkin.
- ** Modified by Marcos E. Wurzius
+ ** Modified by Marcos E. Wurzius & Philippe Lhoste
**/
#include <stdlib.h>
#include "Scintilla.h"
#include "SciLexer.h"
-
static inline bool IsAWordChar(const int ch) {
- return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_');
+ return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '.');
}
-inline bool IsAWordStart(const int ch) {
+static inline bool IsAWordStart(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_');
}
+static inline bool IsANumberChar(const int ch) {
+ // Not exactly following number definition (several dots are seen as OK, etc.)
+ // but probably enough in most cases.
+ return (ch < 0x80) &&
+ (isdigit(ch) || toupper(ch) == 'E' ||
+ ch == '.' || ch == '-' || ch == '+');
+}
-inline bool isLuaOperator(char ch) {
- if (isalnum(ch))
+static inline bool IsLuaOperator(int ch) {
+ if (ch >= 0x80 || isalnum(ch)) {
return false;
+ }
// '.' left out as it is used to make up numbers
if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
ch == '(' || ch == ')' || ch == '=' ||
ch == '{' || ch == '}' || ch == '~' ||
ch == '[' || ch == ']' || ch == ';' ||
ch == '<' || ch == '>' || ch == ',' ||
- ch == '.' || ch == '^' || ch == '%' || ch == ':')
+ ch == '.' || ch == '^' || ch == '%' || ch == ':') {
return true;
+ }
return false;
}
-
-static void ColouriseLuaDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
- Accessor &styler) {
+static void ColouriseLuaDoc(
+ unsigned int startPos,
+ int length,
+ int initStyle,
+ WordList *keywordlists[],
+ Accessor &styler) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords4 = *keywordlists[3];
WordList &keywords5 = *keywordlists[4];
WordList &keywords6 = *keywordlists[5];
- int literalString = 0;
- int literalStringFlag =0;
+ WordList &keywords7 = *keywordlists[6];
+ WordList &keywords8 = *keywordlists[7];
+
+ int currentLine = styler.GetLine(startPos);
+ // Initialize the literal string [[ ... ]] nesting level, if we are inside such a string.
+ int literalStringLevel = 0;
+ if (initStyle == SCE_LUA_LITERALSTRING) {
+ literalStringLevel = styler.GetLineState(currentLine - 1);
+ }
+ // Initialize the block comment --[[ ... ]] nesting level, if we are inside such a comment
+ int blockCommentLevel = 0;
+ if (initStyle == SCE_LUA_COMMENT) {
+ blockCommentLevel = styler.GetLineState(currentLine - 1);
+ }
// Do not leak onto next line
- if (initStyle == SCE_LUA_STRINGEOL)
+ if (initStyle == SCE_LUA_STRINGEOL) {
initStyle = SCE_LUA_DEFAULT;
+ }
StyleContext sc(startPos, length, initStyle, styler);
- if(startPos == 0 && sc.ch == '#') sc.SetState(SCE_LUA_COMMENTLINE);
+ if (startPos == 0 && sc.ch == '#') {
+ // shbang line: # is a comment only if first char of the script
+ sc.SetState(SCE_LUA_COMMENTLINE);
+ }
for (; sc.More(); sc.Forward()) {
-
- // Handle line continuation generically.
- if (sc.ch == '\\') {
- if (sc.Match("\\\n")) {
- sc.Forward();
- sc.Forward();
- continue;
+ if (sc.atLineEnd) {
+ // Update the line state, so it can be seen by next line
+ currentLine = styler.GetLine(sc.currentPos);
+ switch (sc.state) {
+ case SCE_LUA_LITERALSTRING:
+ // Inside a literal string, we set the line state
+ styler.SetLineState(currentLine, literalStringLevel);
+ break;
+ case SCE_LUA_COMMENT: // Block comment
+ // Inside a block comment, we set the line state
+ styler.SetLineState(currentLine, blockCommentLevel);
+ break;
+ default:
+ // Reset the line state
+ styler.SetLineState(currentLine, 0);
+ break;
}
- if (sc.Match("\\\r\n")) {
- sc.Forward();
- sc.Forward();
+ }
+ if (sc.atLineStart && (sc.state == SCE_LUA_STRING)) {
+ // Prevent SCE_LUA_STRINGEOL from leaking back to previous line
+ sc.SetState(SCE_LUA_STRING);
+ }
+
+ // Handle string line continuation
+ if ((sc.state == SCE_LUA_STRING || sc.state == SCE_LUA_CHARACTER) &&
+ sc.ch == '\\') {
+ if (sc.chNext == '\n' || sc.chNext == '\r') {
sc.Forward();
+ if (sc.ch == '\r' && sc.chNext == '\n') {
+ sc.Forward();
+ }
continue;
}
}
if (sc.state == SCE_LUA_OPERATOR) {
sc.SetState(SCE_LUA_DEFAULT);
} else if (sc.state == SCE_LUA_NUMBER) {
- if (!IsAWordChar(sc.ch)) {
+ // We stop the number definition on non-numerical non-dot non-eE non-sign char
+ if (!IsANumberChar(sc.ch)) {
sc.SetState(SCE_LUA_DEFAULT);
}
} else if (sc.state == SCE_LUA_IDENTIFIER) {
- if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
+ if (!IsAWordChar(sc.ch) || sc.Match('.', '.')) {
char s[100];
sc.GetCurrent(s, sizeof(s));
if (keywords.InList(s)) {
sc.ChangeState(SCE_LUA_WORD5);
} else if (keywords6.InList(s)) {
sc.ChangeState(SCE_LUA_WORD6);
+ } else if (keywords6.InList(s)) {
+ sc.ChangeState(SCE_LUA_WORD6);
+ } else if (keywords7.InList(s)) {
+ sc.ChangeState(SCE_LUA_WORD7);
+ } else if (keywords8.InList(s)) {
+ sc.ChangeState(SCE_LUA_WORD8);
}
sc.SetState(SCE_LUA_DEFAULT);
}
-
-
} else if (sc.state == SCE_LUA_COMMENTLINE ) {
if (sc.atLineEnd) {
sc.SetState(SCE_LUA_DEFAULT);
}
+ } else if (sc.state == SCE_LUA_PREPROCESSOR ) {
+ if (sc.atLineEnd) {
+ sc.SetState(SCE_LUA_DEFAULT);
+ }
} else if (sc.state == SCE_LUA_STRING) {
if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
sc.ChangeState(SCE_LUA_STRINGEOL);
sc.ForwardSetState(SCE_LUA_DEFAULT);
}
-
} else if (sc.state == SCE_LUA_CHARACTER) {
if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
sc.ForwardSetState(SCE_LUA_DEFAULT);
}
} else if (sc.state == SCE_LUA_LITERALSTRING) {
- if (sc.chPrev == '[' && sc.ch == '[' && literalStringFlag != 1) {
- literalString++;
- literalStringFlag = 1;
+ if (sc.Match('[', '[')) {
+ literalStringLevel++;
+ sc.Forward();
+ sc.SetState(SCE_LUA_LITERALSTRING);
+ } else if (sc.Match(']', ']') && literalStringLevel > 0) {
+ literalStringLevel--;
+ sc.Forward();
+ if (literalStringLevel == 0) {
+ sc.ForwardSetState(SCE_LUA_DEFAULT);
+ }
}
- else if (sc.chPrev == ']' && sc.ch == ']' && literalStringFlag != 2 ) {
- if((--literalString == 1))
+ } else if (sc.state == SCE_LUA_COMMENT) { // Lua 5.0's block comment
+ if (sc.Match('[', '[')) {
+ blockCommentLevel++;
+ sc.Forward();
+ } else if (sc.Match(']', ']') && blockCommentLevel > 0) {
+ blockCommentLevel--;
+ sc.Forward();
+ if (blockCommentLevel == 0) {
sc.ForwardSetState(SCE_LUA_DEFAULT);
- literalStringFlag = 2;
+ }
}
- else literalStringFlag = 0;
- }
+ }
+
// Determine if a new state should be entered.
if (sc.state == SCE_LUA_DEFAULT) {
if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
- sc.SetState(SCE_LUA_NUMBER);
- } else if (IsAWordStart(sc.ch) || (sc.ch == '@')) {
- sc.SetState(SCE_LUA_IDENTIFIER);
- } else if (sc.ch == '\"') {
+ sc.SetState(SCE_LUA_NUMBER);
+ } else if (IsAWordStart(sc.ch)) {
+ sc.SetState(SCE_LUA_IDENTIFIER);
+ } else if (sc.Match('\"')) {
sc.SetState(SCE_LUA_STRING);
- } else if (sc.ch == '\'') {
+ } else if (sc.Match('\'')) {
sc.SetState(SCE_LUA_CHARACTER);
- } else if (sc.ch == '[' && sc.chNext == '[') {
+ } else if (sc.Match('[', '[')) {
+ literalStringLevel = 1;
sc.SetState(SCE_LUA_LITERALSTRING);
- literalString = 1;
- } else if (sc.ch == '-' && sc.chNext == '-') {
+ sc.Forward();
+ } else if (sc.Match("--[[")) { // Lua 5.0's block comment
+ blockCommentLevel = 1;
+ sc.SetState(SCE_LUA_COMMENT);
+ sc.Forward(3);
+ } else if (sc.Match('-', '-')) {
sc.SetState(SCE_LUA_COMMENTLINE);
- } else if (isLuaOperator(static_cast<char>(sc.ch))) {
+ sc.Forward();
+ } else if (sc.atLineStart && sc.Match('$')) {
+ sc.SetState(SCE_LUA_PREPROCESSOR); // Obsolete since Lua 4.0, but still in old code
+ } else if (IsLuaOperator(static_cast<char>(sc.ch))) {
sc.SetState(SCE_LUA_OPERATOR);
}
}
sc.Complete();
}
-
static void FoldLuaDoc(unsigned int startPos, int length, int /* initStyle */, WordList *[],
Accessor &styler) {
unsigned int lengthDoc = startPos + length;
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
int styleNext = styler.StyleAt(startPos);
char s[10];
+
for (unsigned int i = startPos; i < lengthDoc; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
styleNext = styler.StyleAt(i + 1);
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
if (style == SCE_LUA_WORD) {
- if ( ch == 'i' || ch == 'e' || ch == 't' || ch == 'd' || ch == 'f') {
+ if (ch == 'i' || ch == 'd' || ch == 'f' || ch == 'e') {
for (unsigned int j = 0; j < 8; j++) {
- if (!iswordchar(styler[i + j]))
+ if (!iswordchar(styler[i + j])) {
break;
+ }
s[j] = styler[i + j];
s[j + 1] = '\0';
}
-
- if ((strcmp(s, "if") == 0) || (strcmp(s, "do") == 0)
- || (strcmp(s, "function") == 0))
+
+ if ((strcmp(s, "if") == 0) || (strcmp(s, "do") == 0) || (strcmp(s, "function") == 0)) {
levelCurrent++;
- if ((strcmp(s, "end") == 0) || (strcmp(s, "elseif") == 0))
+ }
+ if ((strcmp(s, "end") == 0) || (strcmp(s, "elseif") == 0)) {
levelCurrent--;
-
+ }
}
- }
- else if (style == SCE_LUA_OPERATOR)
- {
- if(ch == '{' || ch == '(')
+ } else if (style == SCE_LUA_OPERATOR) {
+ if (ch == '{' || ch == '(') {
levelCurrent++;
- else if(ch == '}' || ch == ')')
+ } else if (ch == '}' || ch == ')') {
levelCurrent--;
+ }
}
-
+
if (atEOL) {
int lev = levelPrev;
- if (visibleChars == 0 && foldCompact)
+ if (visibleChars == 0 && foldCompact) {
lev |= SC_FOLDLEVELWHITEFLAG;
- if ((levelCurrent > levelPrev) && (visibleChars > 0))
+ }
+ if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
lev |= SC_FOLDLEVELHEADERFLAG;
+ }
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
levelPrev = levelCurrent;
visibleChars = 0;
}
- if (!isspacechar(ch))
+ if (!isspacechar(ch)) {
visibleChars++;
+ }
}
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}
-LexerModule lmLua(SCLEX_LUA, ColouriseLuaDoc, "lua", FoldLuaDoc);
+static const char * const luaWordListDesc[] = {
+ "Keywords",
+ "Basic functions",
+ "String, (table) & math functions",
+ "(coroutines), I/O & system facilities",
+ "XXX",
+ "XXX",
+ 0
+};
+
+LexerModule lmLua(SCLEX_LUA, ColouriseLuaDoc, "lua", FoldLuaDoc, luaWordListDesc);
projects / wxWidgets.git / blobdiff