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