513 lines
13 KiB
C++
Executable File
513 lines
13 KiB
C++
Executable File
// Scintilla source code edit control
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/** @file LexHollywood.cxx
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** Lexer for Hollywood
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** Written by Andreas Falkenhahn, based on the BlitzBasic/PureBasic/Lua lexers
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** Thanks to Nicholai Benalal
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** For more information on Hollywood, see http://www.hollywood-mal.com/
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** Mail me (andreas <at> airsoftsoftwair <dot> de) for any bugs.
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** This code is subject to the same license terms as the rest of the Scintilla project:
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** The License.txt file describes the conditions under which this software may be distributed.
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**/
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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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#include <string>
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#include <map>
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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 "WordList.h"
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#include "LexAccessor.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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#include "DefaultLexer.h"
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using namespace Scintilla;
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/* Bits:
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* 1 - whitespace
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* 2 - operator
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* 4 - identifier
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* 8 - decimal digit
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* 16 - hex digit
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* 32 - bin digit
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* 64 - letter
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*/
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static int character_classification[128] =
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{
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0, // NUL ($0)
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0, // SOH ($1)
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0, // STX ($2)
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0, // ETX ($3)
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0, // EOT ($4)
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0, // ENQ ($5)
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0, // ACK ($6)
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0, // BEL ($7)
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0, // BS ($8)
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1, // HT ($9)
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1, // LF ($A)
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0, // VT ($B)
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0, // FF ($C)
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1, // CR ($D)
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0, // SO ($E)
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0, // SI ($F)
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0, // DLE ($10)
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0, // DC1 ($11)
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0, // DC2 ($12)
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0, // DC3 ($13)
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0, // DC4 ($14)
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0, // NAK ($15)
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0, // SYN ($16)
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0, // ETB ($17)
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0, // CAN ($18)
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0, // EM ($19)
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0, // SUB ($1A)
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0, // ESC ($1B)
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0, // FS ($1C)
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0, // GS ($1D)
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0, // RS ($1E)
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0, // US ($1F)
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1, // space ($20)
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4, // ! ($21)
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0, // " ($22)
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0, // # ($23)
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4, // $ ($24)
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2, // % ($25)
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2, // & ($26)
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2, // ' ($27)
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2, // ( ($28)
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2, // ) ($29)
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2, // * ($2A)
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2, // + ($2B)
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2, // , ($2C)
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2, // - ($2D)
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// NB: we treat "." as an identifier although it is also an operator and a decimal digit
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// the reason why we treat it as an identifier is to support syntax highlighting for
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// plugin commands which always use a "." in their names, e.g. pdf.OpenDocument();
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// we handle the decimal digit case manually below so that 3.1415 and .123 is styled correctly
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// the collateral damage of treating "." as an identifier is that "." is never styled
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// SCE_HOLLYWOOD_OPERATOR
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4, // . ($2E)
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2, // / ($2F)
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28, // 0 ($30)
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28, // 1 ($31)
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28, // 2 ($32)
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28, // 3 ($33)
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28, // 4 ($34)
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28, // 5 ($35)
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28, // 6 ($36)
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28, // 7 ($37)
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28, // 8 ($38)
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28, // 9 ($39)
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2, // : ($3A)
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2, // ; ($3B)
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2, // < ($3C)
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2, // = ($3D)
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2, // > ($3E)
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2, // ? ($3F)
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0, // @ ($40)
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84, // A ($41)
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84, // B ($42)
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84, // C ($43)
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84, // D ($44)
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84, // E ($45)
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84, // F ($46)
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68, // G ($47)
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68, // H ($48)
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68, // I ($49)
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68, // J ($4A)
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68, // K ($4B)
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68, // L ($4C)
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68, // M ($4D)
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68, // N ($4E)
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68, // O ($4F)
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68, // P ($50)
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68, // Q ($51)
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68, // R ($52)
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68, // S ($53)
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68, // T ($54)
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68, // U ($55)
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68, // V ($56)
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68, // W ($57)
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68, // X ($58)
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68, // Y ($59)
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68, // Z ($5A)
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2, // [ ($5B)
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2, // \ ($5C)
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2, // ] ($5D)
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2, // ^ ($5E)
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68, // _ ($5F)
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2, // ` ($60)
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84, // a ($61)
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84, // b ($62)
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84, // c ($63)
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84, // d ($64)
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84, // e ($65)
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84, // f ($66)
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68, // g ($67)
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68, // h ($68)
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68, // i ($69)
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68, // j ($6A)
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68, // k ($6B)
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68, // l ($6C)
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68, // m ($6D)
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68, // n ($6E)
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68, // o ($6F)
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68, // p ($70)
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68, // q ($71)
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68, // r ($72)
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68, // s ($73)
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68, // t ($74)
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68, // u ($75)
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68, // v ($76)
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68, // w ($77)
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68, // x ($78)
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68, // y ($79)
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68, // z ($7A)
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2, // { ($7B)
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2, // | ($7C)
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2, // } ($7D)
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2, // ~ ($7E)
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0, //  ($7F)
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};
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static bool IsSpace(int c) {
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return c < 128 && (character_classification[c] & 1);
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}
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static bool IsOperator(int c) {
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return c < 128 && (character_classification[c] & 2);
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}
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static bool IsIdentifier(int c) {
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return c < 128 && (character_classification[c] & 4);
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}
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static bool IsDigit(int c) {
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return c < 128 && (character_classification[c] & 8);
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}
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static bool IsHexDigit(int c) {
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return c < 128 && (character_classification[c] & 16);
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}
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static int LowerCase(int c)
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{
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if (c >= 'A' && c <= 'Z')
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return 'a' + c - 'A';
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return c;
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}
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static int CheckHollywoodFoldPoint(char const *token) {
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if (!strcmp(token, "function")) {
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return 1;
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}
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if (!strcmp(token, "endfunction")) {
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return -1;
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}
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return 0;
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}
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// An individual named option for use in an OptionSet
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// Options used for LexerHollywood
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struct OptionsHollywood {
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bool fold;
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bool foldCompact;
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OptionsHollywood() {
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fold = false;
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foldCompact = false;
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}
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};
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static const char * const hollywoodWordListDesc[] = {
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"Hollywood keywords",
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"Hollywood standard API functions",
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"Hollywood plugin API functions",
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"Hollywood plugin methods",
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0
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};
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struct OptionSetHollywood : public OptionSet<OptionsHollywood> {
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OptionSetHollywood(const char * const wordListDescriptions[]) {
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DefineProperty("fold", &OptionsHollywood::fold);
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DefineProperty("fold.compact", &OptionsHollywood::foldCompact);
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DefineWordListSets(wordListDescriptions);
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}
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};
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class LexerHollywood : public DefaultLexer {
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int (*CheckFoldPoint)(char const *);
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WordList keywordlists[4];
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OptionsHollywood options;
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OptionSetHollywood osHollywood;
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public:
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LexerHollywood(int (*CheckFoldPoint_)(char const *), const char * const wordListDescriptions[]) :
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CheckFoldPoint(CheckFoldPoint_),
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osHollywood(wordListDescriptions) {
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}
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virtual ~LexerHollywood() {
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}
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void SCI_METHOD Release() {
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delete this;
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}
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int SCI_METHOD Version() const {
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return lvMetaData;
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}
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const char * SCI_METHOD PropertyNames() {
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return osHollywood.PropertyNames();
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}
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int SCI_METHOD PropertyType(const char *name) {
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return osHollywood.PropertyType(name);
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}
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const char * SCI_METHOD DescribeProperty(const char *name) {
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return osHollywood.DescribeProperty(name);
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}
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Sci_Position SCI_METHOD PropertySet(const char *key, const char *val);
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const char * SCI_METHOD DescribeWordListSets() {
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return osHollywood.DescribeWordListSets();
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}
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Sci_Position SCI_METHOD WordListSet(int n, const char *wl);
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void SCI_METHOD Lex(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess);
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void SCI_METHOD Fold(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess);
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void * SCI_METHOD PrivateCall(int, void *) {
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return 0;
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}
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static ILexer *LexerFactoryHollywood() {
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return new LexerHollywood(CheckHollywoodFoldPoint, hollywoodWordListDesc);
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}
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};
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Sci_Position SCI_METHOD LexerHollywood::PropertySet(const char *key, const char *val) {
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if (osHollywood.PropertySet(&options, key, val)) {
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return 0;
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}
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return -1;
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}
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Sci_Position SCI_METHOD LexerHollywood::WordListSet(int n, const char *wl) {
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WordList *wordListN = 0;
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switch (n) {
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case 0:
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wordListN = &keywordlists[0];
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break;
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case 1:
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wordListN = &keywordlists[1];
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break;
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case 2:
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wordListN = &keywordlists[2];
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break;
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case 3:
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wordListN = &keywordlists[3];
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break;
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}
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Sci_Position firstModification = -1;
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if (wordListN) {
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WordList wlNew;
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wlNew.Set(wl);
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if (*wordListN != wlNew) {
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wordListN->Set(wl);
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firstModification = 0;
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}
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}
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return firstModification;
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}
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void SCI_METHOD LexerHollywood::Lex(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) {
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LexAccessor styler(pAccess);
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styler.StartAt(startPos);
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bool inString = false;
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StyleContext sc(startPos, length, initStyle, styler);
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// Can't use sc.More() here else we miss the last character
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for (; ; sc.Forward())
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{
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if (sc.atLineStart) inString = false;
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if (sc.ch == '\"' && sc.chPrev != '\\') inString = !inString;
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if (sc.state == SCE_HOLLYWOOD_IDENTIFIER) {
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if (!IsIdentifier(sc.ch)) {
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char s[100];
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int kstates[4] = {
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SCE_HOLLYWOOD_KEYWORD,
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SCE_HOLLYWOOD_STDAPI,
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SCE_HOLLYWOOD_PLUGINAPI,
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SCE_HOLLYWOOD_PLUGINMETHOD,
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};
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sc.GetCurrentLowered(s, sizeof(s));
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for (int i = 0; i < 4; i++) {
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if (keywordlists[i].InList(s)) {
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sc.ChangeState(kstates[i]);
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}
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}
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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}
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} else if (sc.state == SCE_HOLLYWOOD_OPERATOR) {
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// always reset to default on operators because otherwise
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// comments won't be recognized in sequences like "+/* Hello*/"
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// --> "+/*" would be recognized as a sequence of operators
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// if (!IsOperator(sc.ch)) sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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} else if (sc.state == SCE_HOLLYWOOD_PREPROCESSOR) {
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if (!IsIdentifier(sc.ch))
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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} else if (sc.state == SCE_HOLLYWOOD_CONSTANT) {
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if (!IsIdentifier(sc.ch))
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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} else if (sc.state == SCE_HOLLYWOOD_NUMBER) {
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if (!IsDigit(sc.ch) && sc.ch != '.')
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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} else if (sc.state == SCE_HOLLYWOOD_HEXNUMBER) {
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if (!IsHexDigit(sc.ch))
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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} else if (sc.state == SCE_HOLLYWOOD_STRING) {
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if (sc.ch == '"') {
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sc.ForwardSetState(SCE_HOLLYWOOD_DEFAULT);
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}
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if (sc.atLineEnd) {
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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}
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} else if (sc.state == SCE_HOLLYWOOD_COMMENT) {
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if (sc.atLineEnd) {
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sc.SetState(SCE_HOLLYWOOD_DEFAULT);
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}
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} else if (sc.state == SCE_HOLLYWOOD_COMMENTBLOCK) {
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if (sc.Match("*/") && !inString) {
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sc.Forward();
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sc.ForwardSetState(SCE_HOLLYWOOD_DEFAULT);
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}
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} else if (sc.state == SCE_HOLLYWOOD_STRINGBLOCK) {
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if (sc.Match("]]") && !inString) {
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sc.Forward();
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sc.ForwardSetState(SCE_HOLLYWOOD_DEFAULT);
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}
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}
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if (sc.state == SCE_HOLLYWOOD_DEFAULT) {
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if (sc.Match(';')) {
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sc.SetState(SCE_HOLLYWOOD_COMMENT);
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} else if (sc.Match("/*")) {
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sc.SetState(SCE_HOLLYWOOD_COMMENTBLOCK);
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sc.Forward();
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} else if (sc.Match("[[")) {
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sc.SetState(SCE_HOLLYWOOD_STRINGBLOCK);
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sc.Forward();
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} else if (sc.Match('"')) {
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sc.SetState(SCE_HOLLYWOOD_STRING);
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} else if (sc.Match('$')) {
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sc.SetState(SCE_HOLLYWOOD_HEXNUMBER);
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} else if (sc.Match("0x") || sc.Match("0X")) { // must be before IsDigit() because of 0x
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sc.SetState(SCE_HOLLYWOOD_HEXNUMBER);
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sc.Forward();
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} else if (sc.ch == '.' && (sc.chNext >= '0' && sc.chNext <= '9')) { // ".1234" style numbers
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sc.SetState(SCE_HOLLYWOOD_NUMBER);
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sc.Forward();
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} else if (IsDigit(sc.ch)) {
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sc.SetState(SCE_HOLLYWOOD_NUMBER);
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} else if (sc.Match('#')) {
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sc.SetState(SCE_HOLLYWOOD_CONSTANT);
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} else if (sc.Match('@')) {
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sc.SetState(SCE_HOLLYWOOD_PREPROCESSOR);
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} else if (IsOperator(sc.ch)) {
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sc.SetState(SCE_HOLLYWOOD_OPERATOR);
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} else if (IsIdentifier(sc.ch)) {
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sc.SetState(SCE_HOLLYWOOD_IDENTIFIER);
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}
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}
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if (!sc.More())
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break;
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}
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sc.Complete();
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}
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void SCI_METHOD LexerHollywood::Fold(Sci_PositionU startPos, Sci_Position length, int /* initStyle */, IDocument *pAccess) {
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if (!options.fold)
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return;
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LexAccessor styler(pAccess);
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Sci_PositionU lengthDoc = startPos + length;
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int visibleChars = 0;
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Sci_Position lineCurrent = styler.GetLine(startPos);
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int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
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int levelCurrent = levelPrev;
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char chNext = styler[startPos];
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int styleNext = styler.StyleAt(startPos);
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int done = 0;
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char word[256];
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int wordlen = 0;
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for (Sci_PositionU i = startPos; i < lengthDoc; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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int 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 (!done) {
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if (wordlen) { // are we scanning a token already?
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word[wordlen] = static_cast<char>(LowerCase(ch));
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if (!IsIdentifier(ch)) { // done with token
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word[wordlen] = '\0';
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levelCurrent += CheckFoldPoint(word);
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done = 1;
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} else if (wordlen < 255) {
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wordlen++;
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}
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} else { // start scanning at first non-whitespace character
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if (!IsSpace(ch)) {
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if (style != SCE_HOLLYWOOD_COMMENTBLOCK && IsIdentifier(ch)) {
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word[0] = static_cast<char>(LowerCase(ch));
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wordlen = 1;
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} else // done with this line
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done = 1;
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}
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}
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}
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if (atEOL) {
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int lev = levelPrev;
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if (visibleChars == 0 && options.foldCompact) {
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lev |= SC_FOLDLEVELWHITEFLAG;
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}
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if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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}
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if (lev != styler.LevelAt(lineCurrent)) {
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styler.SetLevel(lineCurrent, lev);
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}
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lineCurrent++;
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levelPrev = levelCurrent;
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visibleChars = 0;
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done = 0;
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wordlen = 0;
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}
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if (!IsSpace(ch)) {
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visibleChars++;
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}
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}
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// Fill in the real level of the next line, keeping the current flags as they will be filled in later
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int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
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styler.SetLevel(lineCurrent, levelPrev | flagsNext);
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}
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LexerModule lmHollywood(SCLEX_HOLLYWOOD, LexerHollywood::LexerFactoryHollywood, "hollywood", hollywoodWordListDesc);
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