1 | // License: GPL. For details, see LICENSE file. |
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2 | options { |
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3 | STATIC = false; |
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4 | OUTPUT_DIRECTORY = "parsergen"; |
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5 | } |
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6 | |
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7 | PARSER_BEGIN(MapCSSParser) |
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8 | package org.openstreetmap.josm.gui.mappaint.mapcss.parsergen; |
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9 | |
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10 | import java.io.InputStream; |
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11 | import java.util.ArrayList; |
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12 | import java.util.Arrays; |
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13 | import java.util.Collections; |
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14 | import java.util.List; |
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15 | |
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16 | import org.openstreetmap.josm.Main; |
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17 | import org.openstreetmap.josm.gui.mappaint.Keyword; |
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18 | import org.openstreetmap.josm.gui.mappaint.mapcss.Condition; |
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19 | import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.Context; |
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20 | import org.openstreetmap.josm.gui.mappaint.mapcss.Expression; |
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21 | import org.openstreetmap.josm.gui.mappaint.mapcss.ExpressionFactory; |
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22 | import org.openstreetmap.josm.gui.mappaint.mapcss.ExpressionFactory.NullExpression; |
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23 | import org.openstreetmap.josm.gui.mappaint.mapcss.Instruction; |
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24 | import org.openstreetmap.josm.gui.mappaint.mapcss.LiteralExpression; |
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25 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSException; |
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26 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSRule; |
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27 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSRule.Declaration; |
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28 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSStyleSource; |
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29 | import org.openstreetmap.josm.gui.mappaint.mapcss.Selector; |
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30 | import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.ChildOrParentSelector; |
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31 | import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.GeneralSelector; |
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32 | import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.LinkSelector; |
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33 | import org.openstreetmap.josm.gui.mappaint.mapcss.Subpart; |
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34 | import org.openstreetmap.josm.tools.ColorHelper; |
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35 | import org.openstreetmap.josm.tools.Pair; |
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36 | |
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37 | /** |
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38 | * MapCSS parser. |
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39 | * |
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40 | * Contains two independent grammars: |
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41 | * (a) the preprocessor and (b) the main mapcss parser. |
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42 | * |
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43 | * The preprocessor handles @supports and @media syntax (@media is deprecated). |
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44 | * Basically this allows to write one style for different versions of JOSM (or different editors). |
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45 | * When the @supports condition is not fulfilled, it should simply skip over |
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46 | * the whole section and not attempt to parse the possibly unknown |
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47 | * grammar. It preserves whitespace and comments, in order to keep the |
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48 | * line and column numbers in the error messages correct for the second pass. |
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49 | * |
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50 | */ |
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51 | |
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52 | public class MapCSSParser { |
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53 | MapCSSStyleSource sheet; |
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54 | StringBuilder sb; |
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55 | int declarationCounter; |
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56 | |
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57 | /** |
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58 | * Nicer way to refer to a lexical state. |
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59 | */ |
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60 | public static enum LexicalState { |
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61 | PREPROCESSOR(0), /* the preprocessor */ |
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62 | DEFAULT(2); /* the main parser */ |
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63 | |
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64 | int idx; // the integer, which javacc assigns to this state |
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65 | |
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66 | LexicalState(int idx) { |
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67 | if (!this.name().equals(MapCSSParserTokenManager.lexStateNames[idx])) { |
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68 | throw new RuntimeException(); |
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69 | } |
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70 | this.idx = idx; |
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71 | } |
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72 | }; |
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73 | |
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74 | /** |
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75 | * Constructor which initializes the parser with a certain lexical state. |
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76 | */ |
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77 | public MapCSSParser(InputStream in, String encoding, LexicalState initState) { |
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78 | this(createTokenManager(in, encoding, initState)); |
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79 | declarationCounter = 0; |
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80 | } |
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81 | |
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82 | protected static MapCSSParserTokenManager createTokenManager(InputStream in, String encoding, LexicalState initState) { |
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83 | SimpleCharStream scs; |
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84 | try { |
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85 | scs = new SimpleCharStream(in, encoding, 1, 1); |
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86 | } catch(java.io.UnsupportedEncodingException e) { |
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87 | throw new RuntimeException(e); |
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88 | } |
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89 | return new MapCSSParserTokenManager(scs, initState.idx); |
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90 | } |
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91 | } |
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92 | PARSER_END(MapCSSParser) |
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93 | |
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94 | /************* |
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95 | * Token definitions |
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96 | * |
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97 | * Lexical states for the preprocessor: <PREPROCESSOR>, <PP_COMMENT> |
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98 | * Lexical states for the main parser: <DEFAULT>, <COMMENT> |
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99 | */ |
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100 | |
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101 | <PREPROCESSOR> |
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102 | TOKEN: |
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103 | { |
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104 | < PP_AND: "and" > |
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105 | | < PP_OR: "or" > |
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106 | | < PP_NOT: "not" > |
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107 | | < PP_SUPPORTS: "@supports" > |
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108 | | < PP_MEDIA: "@media" > |
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109 | | < PP_NEWLINECHAR: "\n" | "\r" | "\f" > |
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110 | | < PP_WHITESPACE: " " | "\t" > |
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111 | | < PP_COMMENT_START: "/*" > : PP_COMMENT |
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112 | } |
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113 | |
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114 | <PP_COMMENT> |
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115 | TOKEN: |
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116 | { |
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117 | < PP_COMMENT_END: "*/" > : PREPROCESSOR |
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118 | } |
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119 | |
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120 | <PP_COMMENT> |
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121 | MORE: |
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122 | { |
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123 | < ~[] > |
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124 | } |
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125 | |
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126 | <DEFAULT> |
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127 | TOKEN [IGNORE_CASE]: |
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128 | { |
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129 | /* Special keyword in some contexts, ordinary identifier in other contexts. |
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130 | Use the parsing rule <code>ident()</code> to refer to a general |
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131 | identifier, including "set". */ |
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132 | < SET: "set" > |
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133 | } |
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134 | |
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135 | <DEFAULT,PREPROCESSOR> |
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136 | TOKEN: |
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137 | { |
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138 | < IDENT: ["a"-"z","A"-"Z","_"] ( ["a"-"z","A"-"Z","_","-","0"-"9"] )* > |
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139 | | < UINT: ["1"-"9"] ( ["0"-"9"] )* > |
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140 | | < STRING: "\"" ( [" ","!","#"-"[","]"-"~","\u0080"-"\uFFFF"] | "\\\"" | "\\\\" )* "\"" > |
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141 | | < #PREDEFINED: "\\" ["d","D","s","S","w","W","b","B","A","G","Z","z"] > |
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142 | | < #REGEX_CHAR_WITHOUT_STAR: [" "-")","+"-".","0"-"[","]"-"~","\u0080"-"\uFFFF"] | "\\/" | "\\\\" | "\\[" | "\\]" | "\\+" | "\\." | "\\'" | "\\\"" | "\\(" | "\\)" |<PREDEFINED> > |
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143 | | < REGEX: "/" <REGEX_CHAR_WITHOUT_STAR> ( <REGEX_CHAR_WITHOUT_STAR> | "*" )* "/" > |
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144 | | < LBRACE: "{" > |
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145 | | < RBRACE: "}" > |
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146 | | < LPAR: "(" > |
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147 | | < RPAR: ")" > |
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148 | | < COMMA: "," > |
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149 | | < COLON: ":" > |
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150 | } |
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151 | |
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152 | <PREPROCESSOR> |
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153 | TOKEN: |
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154 | { |
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155 | < PP_SOMETHING_ELSE : ~[] > |
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156 | } |
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157 | |
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158 | <DEFAULT> |
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159 | TOKEN: |
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160 | { |
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161 | < UFLOAT: ( ["0"-"9"] )+ ( "." ( ["0"-"9"] )+ )? > |
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162 | | < #H: ["0"-"9","a"-"f","A"-"F"] > |
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163 | | < HEXCOLOR: "#" ( <H><H><H><H><H><H><H><H> | <H><H><H><H><H><H> | <H><H><H> ) > |
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164 | | < S: ( " " | "\t" | "\n" | "\r" | "\f" )+ > |
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165 | | < STAR: "*" > |
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166 | | < SLASH: "/" > |
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167 | | < LSQUARE: "[" > |
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168 | | < RSQUARE: "]" > |
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169 | | < GREATER_EQUAL: ">=" > |
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170 | | < LESS_EQUAL: "<=" > |
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171 | | < GREATER: ">" > |
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172 | | < LESS: "<" > |
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173 | | < EQUAL: "=" > |
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174 | | < EXCLAMATION: "!" > |
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175 | | < TILDE: "~" > |
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176 | | < DCOLON: "::" > |
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177 | | < SEMICOLON: ";" > |
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178 | | < PIPE: "|" > |
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179 | | < PIPE_Z: "|z" > |
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180 | | < PLUS: "+" > |
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181 | | < MINUS: "-" > |
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182 | | < AMPERSAND: "&" > |
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183 | | < QUESTION: "?" > |
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184 | | < DOLLAR: "$" > |
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185 | | < CARET: "^" > |
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186 | | < FULLSTOP: "." > |
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187 | | < DEG: "°" > |
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188 | | < ELEMENT_OF: "∈" > |
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189 | | < CROSSING: "⧉" > |
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190 | | < COMMENT_START: "/*" > : COMMENT |
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191 | | < UNEXPECTED_CHAR : ~[] > // avoid TokenMgrErrors because they are hard to recover from |
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192 | } |
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193 | |
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194 | <COMMENT> |
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195 | TOKEN: |
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196 | { |
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197 | < COMMENT_END: "*/" > : DEFAULT |
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198 | } |
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199 | |
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200 | <COMMENT> |
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201 | SKIP: |
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202 | { |
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203 | < ~[] > |
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204 | } |
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205 | |
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206 | |
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207 | /************* |
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208 | * |
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209 | * Preprocessor parser definitions: |
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210 | * |
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211 | * <pre> |
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212 | * |
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213 | * {@literal @media} { ... } queries are supported, following http://www.w3.org/TR/css3-mediaqueries/#syntax |
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214 | * |
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215 | * media_query |
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216 | * ___________________________|_______________________________ |
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217 | * | | |
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218 | * {@literal @media} all and (min-josm-version: 7789) and (max-josm-version: 7790), all and (user-agent: xyz) { ... } |
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219 | * |______________________| |
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220 | * | |
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221 | * media_expression |
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222 | * </pre> |
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223 | */ |
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224 | |
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225 | |
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226 | /** |
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227 | * root method for the preprocessor. |
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228 | */ |
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229 | String pp_root(MapCSSStyleSource sheet): |
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230 | { |
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231 | } |
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232 | { |
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233 | { sb = new StringBuilder(); this.sheet = sheet; } |
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234 | pp_black_box(true) <EOF> |
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235 | { return sb.toString(); } |
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236 | } |
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237 | |
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238 | /** |
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239 | * Parse any unknown grammar (black box). |
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240 | * |
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241 | * Only stop when "@media" is encountered and keep track of correct number of |
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242 | * opening and closing curly brackets. |
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243 | * |
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244 | * @param write false if this content should be skipped (@pp_media condition is not fulfilled), true otherwise |
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245 | */ |
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246 | void pp_black_box(boolean write): |
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247 | { |
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248 | Token t; |
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249 | } |
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250 | { |
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251 | ( |
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252 | (t=<PP_AND> | t=<PP_OR> | t=<PP_NOT> | t=<UINT> | t=<STRING> | t=<REGEX> | t=<LPAR> | t=<RPAR> | t=<COMMA> | t=<COLON> | t=<IDENT> | t=<PP_SOMETHING_ELSE>) { if (write) sb.append(t.image); } |
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253 | | |
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254 | pp_w1() |
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255 | | |
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256 | pp_supports(!write) |
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257 | | |
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258 | pp_media(!write) |
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259 | | |
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260 | t=<LBRACE> { if (write) sb.append(t.image); } pp_black_box(write) t=<RBRACE> { if (write) sb.append(t.image); } |
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261 | )* |
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262 | } |
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263 | |
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264 | /** |
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265 | * Parses an @supports rule. |
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266 | * |
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267 | * @param ignore if the content of this rule should be ignored |
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268 | * (because we are already inside a @supports block that didn't pass) |
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269 | */ |
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270 | void pp_supports(boolean ignore): |
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271 | { |
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272 | boolean pass; |
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273 | } |
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274 | { |
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275 | <PP_SUPPORTS> pp_w() |
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276 | pass=pp_supports_condition() |
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277 | <LBRACE> |
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278 | pp_black_box(pass && !ignore) |
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279 | <RBRACE> |
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280 | } |
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281 | |
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282 | /** |
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283 | * Parses the condition of the @supports rule. |
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284 | * |
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285 | * Unlike other parsing rules, grabs trailing whitespace. |
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286 | * @return true, if the condition is fulfilled |
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287 | */ |
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288 | boolean pp_supports_condition(): |
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289 | { |
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290 | boolean pass; |
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291 | boolean q; |
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292 | } |
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293 | { |
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294 | ( |
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295 | <PP_NOT> pp_w() q=pp_supports_condition_in_parens() { pass = !q; } pp_w() |
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296 | | |
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297 | LOOKAHEAD(pp_supports_condition_in_parens() pp_w() <PP_AND>) |
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298 | pass=pp_supports_condition_in_parens() pp_w() |
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299 | ( <PP_AND> pp_w() q=pp_supports_condition_in_parens() { pass = pass && q; } pp_w() )+ |
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300 | | |
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301 | LOOKAHEAD(pp_supports_condition_in_parens() pp_w() <PP_OR>) |
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302 | pass=pp_supports_condition_in_parens() pp_w() |
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303 | ( <PP_OR> pp_w() q=pp_supports_condition_in_parens() { pass = pass || q; } pp_w() )+ |
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304 | | |
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305 | pass=pp_supports_condition_in_parens() pp_w() |
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306 | ) |
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307 | { return pass; } |
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308 | } |
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309 | |
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310 | /** |
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311 | * Parses something in parenthesis inside the condition of the @supports rule. |
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312 | * |
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313 | * @return true, if the condition is fulfilled |
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314 | */ |
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315 | boolean pp_supports_condition_in_parens(): |
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316 | { |
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317 | boolean pass; |
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318 | } |
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319 | { |
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320 | ( |
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321 | LOOKAHEAD(pp_supports_declaration_condition()) |
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322 | pass=pp_supports_declaration_condition() |
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323 | | |
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324 | <LPAR> pp_w() pass=pp_supports_condition() <RPAR> |
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325 | ) |
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326 | { return pass; } |
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327 | } |
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328 | |
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329 | /** |
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330 | * Parse an @supports declaration condition, e. g. a single (key:value) or (key) statement. |
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331 | * |
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332 | * The parsing rule {@link #literal()} from the main mapcss parser is reused here. |
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333 | * |
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334 | * @return true if the condition is fulfilled |
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335 | */ |
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336 | boolean pp_supports_declaration_condition(): |
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337 | { |
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338 | Token t; |
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339 | String feature; |
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340 | Object val = null; |
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341 | } |
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342 | { |
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343 | <LPAR> pp_w() t=<IDENT> { feature = t.image; } pp_w() ( <COLON> pp_w() val=literal() )? <RPAR> |
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344 | { return this.sheet.evalSupportsDeclCondition(feature, val); } |
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345 | } |
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346 | |
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347 | // deprecated |
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348 | void pp_media(boolean ignore): |
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349 | { |
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350 | boolean pass = false; |
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351 | boolean q; |
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352 | boolean empty = true; |
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353 | } |
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354 | { |
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355 | <PP_MEDIA> pp_w() |
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356 | ( q=pp_media_query() { pass = pass || q; empty = false; } |
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357 | ( <COMMA> pp_w() q=pp_media_query() { pass = pass || q; } )* |
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358 | )? |
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359 | <LBRACE> |
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360 | pp_black_box((empty || pass) && !ignore) |
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361 | <RBRACE> |
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362 | } |
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363 | |
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364 | // deprecated |
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365 | boolean pp_media_query(): |
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366 | { |
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367 | Token t; |
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368 | String mediatype = "all"; |
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369 | boolean pass = true; |
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370 | boolean invert = false; |
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371 | boolean e; |
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372 | } |
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373 | { |
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374 | ( <PP_NOT> { invert = true; } pp_w() )? |
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375 | ( |
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376 | t=<IDENT> { mediatype = t.image.toLowerCase(); } pp_w() |
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377 | ( <PP_AND> pp_w() e=pp_media_expression() { pass = pass && e; } pp_w() )* |
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378 | | |
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379 | e=pp_media_expression() { pass = pass && e; } pp_w() |
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380 | ( <PP_AND> pp_w() e=pp_media_expression() { pass = pass && e; } pp_w() )* |
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381 | ) |
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382 | { |
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383 | if (!"all".equals(mediatype)) { |
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384 | pass = false; |
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385 | } |
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386 | return invert ? (!pass) : pass; |
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387 | } |
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388 | } |
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389 | |
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390 | /** |
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391 | * Parse an @media expression. |
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392 | * |
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393 | * The parsing rule {@link #literal()} from the main mapcss parser is reused here. |
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394 | * |
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395 | * @return true if the condition is fulfilled |
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396 | */ |
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397 | // deprecated |
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398 | boolean pp_media_expression(): |
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399 | { |
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400 | Token t; |
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401 | String feature; |
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402 | Object val = null; |
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403 | } |
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404 | { |
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405 | <LPAR> pp_w() t=<IDENT> { feature = t.image; } pp_w() ( <COLON> pp_w() val=literal() )? <RPAR> |
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406 | { return this.sheet.evalSupportsDeclCondition(feature, val); } |
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407 | } |
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408 | |
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409 | void pp_w1(): |
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410 | { |
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411 | Token t; |
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412 | } |
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413 | { |
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414 | t=<PP_NEWLINECHAR> { sb.append(t.image); } |
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415 | | |
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416 | t=<PP_WHITESPACE> { sb.append(t.image); } |
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417 | | |
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418 | t=<PP_COMMENT_START> { sb.append(t.image); } t=<PP_COMMENT_END> { sb.append(t.image); } |
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419 | } |
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420 | |
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421 | void pp_w(): |
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422 | { |
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423 | } |
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424 | { |
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425 | ( pp_w1() )* |
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426 | } |
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427 | |
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428 | /************* |
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429 | * |
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430 | * Parser definition for the main MapCSS parser: |
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431 | * |
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432 | * <pre> |
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433 | * |
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434 | * rule |
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435 | * _______________________|______________________________ |
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436 | * | | |
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437 | * selector declaration |
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438 | * _________|___________________ _________|____________ |
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439 | * | | | | |
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440 | * |
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441 | * way|z11-12[highway=residential] { color: red; width: 3 } |
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442 | * |
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443 | * |_____||___________________| |_________| |
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444 | * | | | |
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445 | * zoom condition instruction |
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446 | * |
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447 | * more general: |
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448 | * |
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449 | * way|z13-[a=b][c=d]::subpart, way|z-3[u=v]:closed::subpart2 { p1 : val; p2 : val; } |
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450 | * |
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451 | * 'val' can be a literal, or an expression like "prop(width, default) + 0.8". |
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452 | * |
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453 | * </pre> |
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454 | */ |
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455 | |
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456 | int uint() : |
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457 | { |
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458 | Token i; |
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459 | } |
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460 | { |
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461 | i=<UINT> { return Integer.parseInt(i.image); } |
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462 | } |
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463 | |
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464 | int int_() : |
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465 | { |
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466 | int i; |
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467 | } |
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468 | { |
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469 | <MINUS> i=uint() { return -i; } | i=uint() { return i; } |
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470 | } |
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471 | |
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472 | float ufloat() : |
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473 | { |
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474 | Token f; |
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475 | } |
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476 | { |
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477 | ( f=<UFLOAT> | f=<UINT> ) |
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478 | { return Float.parseFloat(f.image); } |
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479 | } |
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480 | |
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481 | float float_() : |
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482 | { |
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483 | float f; |
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484 | } |
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485 | { |
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486 | <MINUS> f=ufloat() { return -f; } | f=ufloat() { return f; } |
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487 | } |
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488 | |
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489 | String string() : |
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490 | { |
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491 | Token t; |
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492 | } |
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493 | { |
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494 | t=<STRING> |
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495 | { return t.image.substring(1, t.image.length() - 1).replace("\\\"", "\"").replace("\\\\", "\\"); } |
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496 | } |
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497 | |
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498 | String ident(): |
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499 | { |
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500 | Token t; |
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501 | String s; |
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502 | } |
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503 | { |
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504 | ( t=<IDENT> | t=<SET> ) { return t.image; } |
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505 | } |
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506 | |
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507 | String string_or_ident() : |
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508 | { |
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509 | Token t; |
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510 | String s; |
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511 | } |
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512 | { |
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513 | ( s=ident() | s=string() ) { return s; } |
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514 | } |
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515 | |
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516 | String regex() : |
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517 | { |
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518 | Token t; |
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519 | } |
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520 | { |
---|
521 | t=<REGEX> |
---|
522 | { return t.image.substring(1, t.image.length() - 1); } |
---|
523 | } |
---|
524 | |
---|
525 | /** |
---|
526 | * white-space |
---|
527 | */ |
---|
528 | void s() : |
---|
529 | { |
---|
530 | } |
---|
531 | { |
---|
532 | ( <S> )? |
---|
533 | } |
---|
534 | |
---|
535 | /** |
---|
536 | * mix of white-space and comments |
---|
537 | */ |
---|
538 | void w() : |
---|
539 | { |
---|
540 | } |
---|
541 | { |
---|
542 | ( <S> | <COMMENT_START> <COMMENT_END> )* |
---|
543 | } |
---|
544 | |
---|
545 | /** |
---|
546 | * comma delimited list of floats (at least 2, all >= 0) |
---|
547 | */ |
---|
548 | List<Float> float_array() : |
---|
549 | { |
---|
550 | float f; |
---|
551 | List<Float> fs = new ArrayList<Float>(); |
---|
552 | } |
---|
553 | { |
---|
554 | f=ufloat() { fs.add(f); } |
---|
555 | ( |
---|
556 | <COMMA> s() |
---|
557 | f=ufloat() { fs.add(f); } |
---|
558 | )+ |
---|
559 | { |
---|
560 | return fs; |
---|
561 | } |
---|
562 | } |
---|
563 | |
---|
564 | /** |
---|
565 | * entry point for the main parser |
---|
566 | */ |
---|
567 | void sheet(MapCSSStyleSource sheet): |
---|
568 | { |
---|
569 | } |
---|
570 | { |
---|
571 | { this.sheet = sheet; } |
---|
572 | w() |
---|
573 | ( |
---|
574 | try { |
---|
575 | rule() w() |
---|
576 | } catch (MapCSSException mex) { |
---|
577 | error_skipto(RBRACE, mex); |
---|
578 | w(); |
---|
579 | } catch (ParseException ex) { |
---|
580 | error_skipto(RBRACE, null); |
---|
581 | w(); |
---|
582 | } |
---|
583 | )* |
---|
584 | <EOF> |
---|
585 | } |
---|
586 | |
---|
587 | void rule(): |
---|
588 | { |
---|
589 | List<Selector> selectors = new ArrayList<Selector>(); |
---|
590 | Selector sel; |
---|
591 | Declaration decl; |
---|
592 | } |
---|
593 | { |
---|
594 | sel=child_selector() { selectors.add(sel); } |
---|
595 | ( |
---|
596 | <COMMA> w() |
---|
597 | sel=child_selector() { selectors.add(sel); } |
---|
598 | )* |
---|
599 | decl=declaration() |
---|
600 | { |
---|
601 | for (Selector s : selectors) { |
---|
602 | sheet.rules.add(new MapCSSRule(s, decl)); |
---|
603 | } |
---|
604 | } |
---|
605 | } |
---|
606 | |
---|
607 | Selector child_selector() : |
---|
608 | { |
---|
609 | Selector.ChildOrParentSelectorType type = null; |
---|
610 | Condition c; |
---|
611 | List<Condition> conditions = new ArrayList<Condition>(); |
---|
612 | Selector selLeft; |
---|
613 | LinkSelector selLink = null; |
---|
614 | Selector selRight = null; |
---|
615 | } |
---|
616 | { |
---|
617 | selLeft=selector() w() |
---|
618 | ( |
---|
619 | ( |
---|
620 | ( |
---|
621 | ( |
---|
622 | <GREATER> { type = Selector.ChildOrParentSelectorType.CHILD; } |
---|
623 | | |
---|
624 | <LESS> { type = Selector.ChildOrParentSelectorType.PARENT; } |
---|
625 | | |
---|
626 | <PLUS> { type = Selector.ChildOrParentSelectorType.SIBLING; } |
---|
627 | ) |
---|
628 | ( ( c=condition(Context.LINK) | c=class_or_pseudoclass(Context.LINK) ) { conditions.add(c); } )* |
---|
629 | | |
---|
630 | <ELEMENT_OF> { type = Selector.ChildOrParentSelectorType.ELEMENT_OF; } |
---|
631 | | |
---|
632 | <CROSSING> { type = Selector.ChildOrParentSelectorType.CROSSING; } |
---|
633 | ) |
---|
634 | w() |
---|
635 | | |
---|
636 | { /* <GREATER> is optional for child selector */ type = Selector.ChildOrParentSelectorType.CHILD; } |
---|
637 | ) |
---|
638 | { selLink = new LinkSelector(conditions); } |
---|
639 | selRight=selector() w() |
---|
640 | )? |
---|
641 | { return selRight != null ? new ChildOrParentSelector(selLeft, selLink, selRight, type) : selLeft; } |
---|
642 | } |
---|
643 | |
---|
644 | Selector selector() : |
---|
645 | { |
---|
646 | Token base; |
---|
647 | Condition c; |
---|
648 | Pair<Integer, Integer> r = null; |
---|
649 | List<Condition> conditions = new ArrayList<Condition>(); |
---|
650 | Subpart sub = null; |
---|
651 | } |
---|
652 | { |
---|
653 | ( base=<IDENT> | base=<STAR> ) |
---|
654 | ( r=zoom() )? |
---|
655 | ( ( c=condition(Context.PRIMITIVE) | c=class_or_pseudoclass(Context.PRIMITIVE) ) { conditions.add(c); } )* |
---|
656 | ( sub=subpart() )? |
---|
657 | { return new GeneralSelector(base.image, r, conditions, sub); } |
---|
658 | } |
---|
659 | |
---|
660 | Pair<Integer, Integer> zoom() : |
---|
661 | { |
---|
662 | Integer min = 0; |
---|
663 | Integer max = Integer.MAX_VALUE; |
---|
664 | } |
---|
665 | { |
---|
666 | <PIPE_Z> |
---|
667 | ( |
---|
668 | <MINUS> max=uint() |
---|
669 | | |
---|
670 | LOOKAHEAD(2) |
---|
671 | min=uint() <MINUS> ( max=uint() )? |
---|
672 | | |
---|
673 | min=uint() { max = min; } |
---|
674 | ) |
---|
675 | { return new Pair<Integer, Integer>(min, max); } |
---|
676 | } |
---|
677 | |
---|
678 | Condition condition(Context context) : |
---|
679 | { |
---|
680 | Condition c; |
---|
681 | Expression e; |
---|
682 | } |
---|
683 | { |
---|
684 | <LSQUARE> s() |
---|
685 | ( |
---|
686 | LOOKAHEAD( simple_key_condition(context) s() <RSQUARE> ) |
---|
687 | c=simple_key_condition(context) s() <RSQUARE> { return c; } |
---|
688 | | |
---|
689 | LOOKAHEAD( simple_key_value_condition(context) s() <RSQUARE> ) |
---|
690 | c=simple_key_value_condition(context) s() <RSQUARE> { return c; } |
---|
691 | | |
---|
692 | e=expression() <RSQUARE> { return Condition.createExpressionCondition(e, context); } |
---|
693 | ) |
---|
694 | } |
---|
695 | |
---|
696 | String tag_key() : |
---|
697 | { |
---|
698 | String s, s2; |
---|
699 | Token t; |
---|
700 | } |
---|
701 | { |
---|
702 | s=string() { return s; } |
---|
703 | | |
---|
704 | s=ident() ( <COLON> s2=ident() { s += ':' + s2; } )* { return s; } |
---|
705 | } |
---|
706 | |
---|
707 | Condition simple_key_condition(Context context) : |
---|
708 | { |
---|
709 | boolean not = false; |
---|
710 | Condition.KeyMatchType matchType = null;; |
---|
711 | String key; |
---|
712 | } |
---|
713 | { |
---|
714 | ( <EXCLAMATION> { not = true; } )? |
---|
715 | ( |
---|
716 | { matchType = Condition.KeyMatchType.REGEX; } key = regex() |
---|
717 | | |
---|
718 | key = tag_key() |
---|
719 | ) |
---|
720 | ( LOOKAHEAD(2) <QUESTION> <EXCLAMATION> { matchType = Condition.KeyMatchType.FALSE; } )? |
---|
721 | ( <QUESTION> { matchType = Condition.KeyMatchType.TRUE; } )? |
---|
722 | { return Condition.createKeyCondition(key, not, matchType, context); } |
---|
723 | } |
---|
724 | |
---|
725 | Condition simple_key_value_condition(Context context) : |
---|
726 | { |
---|
727 | String key; |
---|
728 | String val; |
---|
729 | float f; |
---|
730 | int i; |
---|
731 | Condition.Op op; |
---|
732 | boolean considerValAsKey = false; |
---|
733 | } |
---|
734 | { |
---|
735 | key=tag_key() s() |
---|
736 | ( |
---|
737 | LOOKAHEAD(3) |
---|
738 | ( |
---|
739 | <EQUAL> <TILDE> { op=Condition.Op.REGEX; } |
---|
740 | | |
---|
741 | <EXCLAMATION> <TILDE> { op=Condition.Op.NREGEX; } |
---|
742 | ) |
---|
743 | s() |
---|
744 | ( <STAR> { considerValAsKey=true; } )? |
---|
745 | val=regex() |
---|
746 | | |
---|
747 | ( |
---|
748 | <EXCLAMATION> <EQUAL> { op=Condition.Op.NEQ; } |
---|
749 | | |
---|
750 | <EQUAL> { op=Condition.Op.EQ; } |
---|
751 | | |
---|
752 | <TILDE> <EQUAL> { op=Condition.Op.ONE_OF; } |
---|
753 | | |
---|
754 | <CARET> <EQUAL> { op=Condition.Op.BEGINS_WITH; } |
---|
755 | | |
---|
756 | <DOLLAR> <EQUAL> { op=Condition.Op.ENDS_WITH; } |
---|
757 | | |
---|
758 | <STAR> <EQUAL> { op=Condition.Op.CONTAINS; } |
---|
759 | ) |
---|
760 | s() |
---|
761 | ( <STAR> { considerValAsKey=true; } )? |
---|
762 | ( |
---|
763 | LOOKAHEAD(2) |
---|
764 | i=int_() { val=Integer.toString(i); } |
---|
765 | | |
---|
766 | f=float_() { val=Float.toString(f); } |
---|
767 | | |
---|
768 | val=string_or_ident() |
---|
769 | ) |
---|
770 | | |
---|
771 | ( |
---|
772 | <GREATER_EQUAL> { op=Condition.Op.GREATER_OR_EQUAL; } |
---|
773 | | |
---|
774 | <GREATER> { op=Condition.Op.GREATER; } |
---|
775 | | |
---|
776 | <LESS_EQUAL> { op=Condition.Op.LESS_OR_EQUAL; } |
---|
777 | | |
---|
778 | <LESS> { op=Condition.Op.LESS; } |
---|
779 | ) |
---|
780 | s() |
---|
781 | f=float_() { val=Float.toString(f); } |
---|
782 | ) |
---|
783 | { return Condition.createKeyValueCondition(key, val, op, context, considerValAsKey); } |
---|
784 | } |
---|
785 | |
---|
786 | Condition class_or_pseudoclass(Context context) : |
---|
787 | { |
---|
788 | String s; |
---|
789 | boolean not = false; |
---|
790 | boolean pseudo; |
---|
791 | } |
---|
792 | { |
---|
793 | ( <EXCLAMATION> { not = true; } )? |
---|
794 | ( |
---|
795 | <FULLSTOP> { pseudo = false; } |
---|
796 | | |
---|
797 | <COLON> { pseudo = true; } |
---|
798 | ) |
---|
799 | s=ident() |
---|
800 | { return pseudo |
---|
801 | ? Condition.createPseudoClassCondition(s, not, context) |
---|
802 | : Condition.createClassCondition(s, not, context); } |
---|
803 | } |
---|
804 | |
---|
805 | Subpart subpart() : |
---|
806 | { |
---|
807 | String s; |
---|
808 | Expression e; |
---|
809 | } |
---|
810 | { |
---|
811 | <DCOLON> |
---|
812 | ( |
---|
813 | s=ident() { return new Subpart.StringSubpart(s); } |
---|
814 | | |
---|
815 | <STAR> { return new Subpart.StringSubpart("*"); } |
---|
816 | | |
---|
817 | <LPAR> e=expression() <RPAR> { return new Subpart.ExpressionSubpart(e); } |
---|
818 | ) |
---|
819 | } |
---|
820 | |
---|
821 | Declaration declaration() : |
---|
822 | { |
---|
823 | List<Instruction> ins = new ArrayList<Instruction>(); |
---|
824 | Instruction i; |
---|
825 | Token key; |
---|
826 | Object val = null; |
---|
827 | } |
---|
828 | { |
---|
829 | <LBRACE> w() |
---|
830 | ( |
---|
831 | ( |
---|
832 | <SET> w() |
---|
833 | (<FULLSTOP>)? // specification allows "set .class" to set "class". we also support "set class" |
---|
834 | key=<IDENT> w() |
---|
835 | ( <EQUAL> val=expression() )? |
---|
836 | { ins.add(new Instruction.AssignmentInstruction(key.image, val == null ? true : val, true)); } |
---|
837 | ( <RBRACE> { return new Declaration(ins, declarationCounter++); } | <SEMICOLON> w() ) |
---|
838 | ) |
---|
839 | | |
---|
840 | key=<IDENT> w() <COLON> w() |
---|
841 | ( |
---|
842 | LOOKAHEAD( float_array() w() ( <SEMICOLON> | <RBRACE> ) ) |
---|
843 | val=float_array() |
---|
844 | { ins.add(new Instruction.AssignmentInstruction(key.image, val, false)); } |
---|
845 | w() |
---|
846 | ( <RBRACE> { return new Declaration(ins, declarationCounter++); } | <SEMICOLON> w() ) |
---|
847 | | |
---|
848 | LOOKAHEAD( expression() ( <SEMICOLON> | <RBRACE> ) ) |
---|
849 | val=expression() |
---|
850 | { ins.add(new Instruction.AssignmentInstruction(key.image, val, false)); } |
---|
851 | ( <RBRACE> { return new Declaration(ins, declarationCounter++); } | <SEMICOLON> w() ) |
---|
852 | | |
---|
853 | val=readRaw() w() { ins.add(new Instruction.AssignmentInstruction(key.image, val, false)); } |
---|
854 | ) |
---|
855 | )* |
---|
856 | <RBRACE> |
---|
857 | { return new Declaration(ins, declarationCounter++); } |
---|
858 | } |
---|
859 | |
---|
860 | /** |
---|
861 | * General expression. |
---|
862 | * Separate production rule for each level of operator precedence (recursive descent). |
---|
863 | */ |
---|
864 | Expression expression() : |
---|
865 | { |
---|
866 | Expression e; |
---|
867 | } |
---|
868 | { |
---|
869 | e=conditional_expression() |
---|
870 | { |
---|
871 | return e; |
---|
872 | } |
---|
873 | } |
---|
874 | |
---|
875 | Expression conditional_expression() : |
---|
876 | { |
---|
877 | Expression e, e1, e2; |
---|
878 | String op = null; |
---|
879 | } |
---|
880 | { |
---|
881 | e=or_expression() |
---|
882 | ( |
---|
883 | <QUESTION> w() |
---|
884 | e1=conditional_expression() |
---|
885 | <COLON> w() |
---|
886 | e2=conditional_expression() |
---|
887 | { |
---|
888 | e = ExpressionFactory.createFunctionExpression("cond", Arrays.asList(e, e1, e2)); |
---|
889 | } |
---|
890 | )? |
---|
891 | { |
---|
892 | return e; |
---|
893 | } |
---|
894 | } |
---|
895 | |
---|
896 | Expression or_expression() : |
---|
897 | { |
---|
898 | Expression e, e2; |
---|
899 | String op = null; |
---|
900 | } |
---|
901 | { |
---|
902 | e=and_expression() |
---|
903 | ( |
---|
904 | <PIPE> <PIPE> w() |
---|
905 | e2=and_expression() |
---|
906 | { |
---|
907 | e = ExpressionFactory.createFunctionExpression("or", Arrays.asList(e, e2)); |
---|
908 | } |
---|
909 | )* |
---|
910 | { |
---|
911 | return e; |
---|
912 | } |
---|
913 | } |
---|
914 | |
---|
915 | Expression and_expression() : |
---|
916 | { |
---|
917 | Expression e, e2; |
---|
918 | String op = null; |
---|
919 | } |
---|
920 | { |
---|
921 | e=relational_expression() |
---|
922 | ( |
---|
923 | <AMPERSAND> <AMPERSAND> w() |
---|
924 | e2=relational_expression() |
---|
925 | { |
---|
926 | e = ExpressionFactory.createFunctionExpression("and", Arrays.asList(e, e2)); |
---|
927 | } |
---|
928 | )* |
---|
929 | { |
---|
930 | return e; |
---|
931 | } |
---|
932 | } |
---|
933 | |
---|
934 | Expression relational_expression() : |
---|
935 | { |
---|
936 | Expression e, e2; |
---|
937 | String op = null; |
---|
938 | } |
---|
939 | { |
---|
940 | e=additive_expression() |
---|
941 | ( |
---|
942 | ( |
---|
943 | <GREATER_EQUAL> { op = "greater_equal"; } |
---|
944 | | |
---|
945 | <LESS_EQUAL> { op = "less_equal"; } |
---|
946 | | |
---|
947 | <GREATER> { op = "greater"; } |
---|
948 | | |
---|
949 | <LESS> { op = "less"; } |
---|
950 | | |
---|
951 | <EQUAL> ( <EQUAL> )? { op = "equal"; } |
---|
952 | | |
---|
953 | <EXCLAMATION> <EQUAL> { op = "not_equal"; } |
---|
954 | ) w() |
---|
955 | e2=additive_expression() |
---|
956 | { |
---|
957 | e = ExpressionFactory.createFunctionExpression(op, Arrays.asList(e, e2)); |
---|
958 | } |
---|
959 | )? |
---|
960 | { |
---|
961 | return e; |
---|
962 | } |
---|
963 | } |
---|
964 | |
---|
965 | Expression additive_expression() : |
---|
966 | { |
---|
967 | Expression e, e2; |
---|
968 | String op = null; |
---|
969 | } |
---|
970 | { |
---|
971 | e=multiplicative_expression() |
---|
972 | ( |
---|
973 | ( <PLUS> { op = "plus"; } | <MINUS> { op = "minus"; } ) w() |
---|
974 | e2=multiplicative_expression() |
---|
975 | { |
---|
976 | e = ExpressionFactory.createFunctionExpression(op, Arrays.asList(e, e2)); |
---|
977 | } |
---|
978 | )* |
---|
979 | { |
---|
980 | return e; |
---|
981 | } |
---|
982 | } |
---|
983 | |
---|
984 | Expression multiplicative_expression() : |
---|
985 | { |
---|
986 | Expression e, e2; |
---|
987 | String op = null; |
---|
988 | } |
---|
989 | { |
---|
990 | e=unary_expression() |
---|
991 | ( |
---|
992 | ( <STAR> { op = "times"; } | <SLASH> { op = "divided_by"; } ) w() |
---|
993 | e2=unary_expression() |
---|
994 | { |
---|
995 | e = ExpressionFactory.createFunctionExpression(op, Arrays.asList(e, e2)); |
---|
996 | } |
---|
997 | )* |
---|
998 | { |
---|
999 | return e; |
---|
1000 | } |
---|
1001 | } |
---|
1002 | |
---|
1003 | Expression unary_expression() : |
---|
1004 | { |
---|
1005 | Expression e; |
---|
1006 | String op = null; |
---|
1007 | } |
---|
1008 | { |
---|
1009 | ( |
---|
1010 | <MINUS> { op = "minus"; } w() |
---|
1011 | | |
---|
1012 | <EXCLAMATION> { op = "not"; } w() |
---|
1013 | )? |
---|
1014 | e=primary() w() |
---|
1015 | { |
---|
1016 | if (op == null) |
---|
1017 | return e; |
---|
1018 | return ExpressionFactory.createFunctionExpression(op, Collections.singletonList(e)); |
---|
1019 | } |
---|
1020 | } |
---|
1021 | |
---|
1022 | Expression primary() : |
---|
1023 | { |
---|
1024 | Expression nested; |
---|
1025 | Expression fn; |
---|
1026 | Object lit; |
---|
1027 | } |
---|
1028 | { |
---|
1029 | LOOKAHEAD(3) // both function and identifier start with an identifier (+ optional whitespace) |
---|
1030 | fn=function() { return fn; } |
---|
1031 | | |
---|
1032 | lit=literal() |
---|
1033 | { |
---|
1034 | if (lit == null) |
---|
1035 | return NullExpression.INSTANCE; |
---|
1036 | return new LiteralExpression(lit); |
---|
1037 | } |
---|
1038 | | |
---|
1039 | <LPAR> w() nested=expression() <RPAR> { return nested; } |
---|
1040 | } |
---|
1041 | |
---|
1042 | Expression function() : |
---|
1043 | { |
---|
1044 | Expression arg; |
---|
1045 | String name; |
---|
1046 | List<Expression> args = new ArrayList<Expression>(); |
---|
1047 | } |
---|
1048 | { |
---|
1049 | name=ident() w() |
---|
1050 | <LPAR> w() |
---|
1051 | ( |
---|
1052 | arg=expression() { args.add(arg); } |
---|
1053 | ( <COMMA> w() arg=expression() { args.add(arg); } )* |
---|
1054 | )? |
---|
1055 | <RPAR> |
---|
1056 | { return ExpressionFactory.createFunctionExpression(name, args); } |
---|
1057 | } |
---|
1058 | |
---|
1059 | Object literal() : |
---|
1060 | { |
---|
1061 | String val, pref; |
---|
1062 | Token t; |
---|
1063 | Float f; |
---|
1064 | } |
---|
1065 | { |
---|
1066 | LOOKAHEAD(2) |
---|
1067 | pref=ident() t=<HEXCOLOR> |
---|
1068 | { return Main.pref.getColor("mappaint." + (sheet == null ? "MapCSS" : sheet.title) + "." + pref, ColorHelper.html2color(t.image)); } |
---|
1069 | | |
---|
1070 | t=<IDENT> { return new Keyword(t.image); } |
---|
1071 | | |
---|
1072 | val=string() { return val; } |
---|
1073 | | |
---|
1074 | <PLUS> f=ufloat() { return new Instruction.RelativeFloat(f); } |
---|
1075 | | |
---|
1076 | LOOKAHEAD(2) |
---|
1077 | f=ufloat_unit() { return f; } |
---|
1078 | | |
---|
1079 | f=ufloat() { return f; } |
---|
1080 | | |
---|
1081 | t=<HEXCOLOR> { return ColorHelper.html2color(t.image); } |
---|
1082 | } |
---|
1083 | |
---|
1084 | /** |
---|
1085 | * Number followed by a unit. |
---|
1086 | * |
---|
1087 | * Returns angles in radians and lengths in pixels. |
---|
1088 | */ |
---|
1089 | Float ufloat_unit() : |
---|
1090 | { |
---|
1091 | float f; |
---|
1092 | String u; |
---|
1093 | } |
---|
1094 | { |
---|
1095 | f=ufloat() ( u=ident() | <DEG> { u = "°"; } ) |
---|
1096 | { |
---|
1097 | Double m = unit_factor(u); |
---|
1098 | if (m == null) |
---|
1099 | return null; |
---|
1100 | return (float) (f * m); |
---|
1101 | } |
---|
1102 | } |
---|
1103 | |
---|
1104 | JAVACODE |
---|
1105 | private Double unit_factor(String unit) { |
---|
1106 | switch (unit) { |
---|
1107 | case "deg": |
---|
1108 | case "°": return Math.PI / 180; |
---|
1109 | case "rad": return 1.; |
---|
1110 | case "grad": return Math.PI / 200; |
---|
1111 | case "turn": return 2 * Math.PI; |
---|
1112 | case "px": return 1.; |
---|
1113 | case "cm": return 96/2.54; |
---|
1114 | case "mm": return 9.6/2.54; |
---|
1115 | case "in": return 96.; |
---|
1116 | case "q": return 2.4/2.54; |
---|
1117 | case "pc": return 16.; |
---|
1118 | case "pt": return 96./72; |
---|
1119 | default: return null; |
---|
1120 | } |
---|
1121 | } |
---|
1122 | |
---|
1123 | JAVACODE |
---|
1124 | void error_skipto(int kind, MapCSSException me) { |
---|
1125 | if (token.kind == EOF) |
---|
1126 | throw new ParseException("Reached end of file while parsing"); |
---|
1127 | |
---|
1128 | Exception e = null; |
---|
1129 | ParseException pe = generateParseException(); |
---|
1130 | |
---|
1131 | if (me != null) { |
---|
1132 | me.setLine(pe.currentToken.next.beginLine); |
---|
1133 | me.setColumn(pe.currentToken.next.beginColumn); |
---|
1134 | e = me; |
---|
1135 | } else { |
---|
1136 | e = new ParseException(pe.getMessage()); // prevent memory leak |
---|
1137 | } |
---|
1138 | |
---|
1139 | Main.error("Skipping to the next rule, because of an error:"); |
---|
1140 | Main.error(e); |
---|
1141 | if (sheet != null) { |
---|
1142 | sheet.logError(e); |
---|
1143 | } |
---|
1144 | Token t; |
---|
1145 | do { |
---|
1146 | t = getNextToken(); |
---|
1147 | } while (t.kind != kind && t.kind != EOF); |
---|
1148 | if (t.kind == EOF) |
---|
1149 | throw new ParseException("Reached end of file while parsing"); |
---|
1150 | } |
---|
1151 | |
---|
1152 | JAVACODE |
---|
1153 | /** |
---|
1154 | * read everything to the next semicolon |
---|
1155 | */ |
---|
1156 | String readRaw() { |
---|
1157 | Token t; |
---|
1158 | StringBuilder s = new StringBuilder(); |
---|
1159 | while (true) { |
---|
1160 | t = getNextToken(); |
---|
1161 | if ((t.kind == S || t.kind == STRING || t.kind == UNEXPECTED_CHAR) && |
---|
1162 | t.image.contains("\n")) { |
---|
1163 | ParseException e = new ParseException(String.format("Warning: end of line while reading an unquoted string at line %s column %s.", t.beginLine, t.beginColumn)); |
---|
1164 | Main.error(e); |
---|
1165 | if (sheet != null) { |
---|
1166 | sheet.logError(e); |
---|
1167 | } |
---|
1168 | } |
---|
1169 | if (t.kind == SEMICOLON || t.kind == EOF) |
---|
1170 | break; |
---|
1171 | s.append(t.image); |
---|
1172 | } |
---|
1173 | if (t.kind == EOF) |
---|
1174 | throw new ParseException("Reached end of file while parsing"); |
---|
1175 | return s.toString(); |
---|
1176 | } |
---|
1177 | |
---|