Mercurial > projects > dil

annotate src/dil/semantic/Module.d @ 814:49e32b5bc161

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Added isValidUnreservedIdentifier() to Lexer. Added the msg InvalidModuleName.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Wed, 12 Mar 2008 17:01:27 +0100
parents 525ee3f848d9
children 615c1386b18d
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1 /++
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2 Author: Aziz Köksal
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3 License: GPL3
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4 +/
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5 module dil.semantic.Module;
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6
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7 import dil.ast.Node;
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8 import dil.ast.Declarations;
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9 import dil.parser.Parser;
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10 import dil.lexer.Lexer;
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11 import dil.semantic.Symbol;
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641041912670 Moved dil.Symbols to dil.semantic.Symbols.
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12 import dil.semantic.Symbols;
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13 import dil.Location;
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14 import dil.Messages;
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15 import dil.Information;
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16 import dil.SourceText;
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17 import common;
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18
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19 import tango.io.FilePath;
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20 import tango.io.FileConst;
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21
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22 alias FileConst.PathSeparatorChar dirSep;
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23
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24 /// Represents a semantic D module and a source file.
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25 class Module : ScopeSymbol
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26 {
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27 SourceText sourceText; /// The source file of this module.
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28 string moduleFQN; /// Fully qualified name of the module. E.g.: dil.ast.Node
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29 string packageName; /// E.g.: dil.ast
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30 string moduleName; /// E.g.: Node
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31
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32 CompoundDeclaration root; /// The root of the parse tree.
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33 ImportDeclaration[] imports; /// ImportDeclarations found in this file.
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34 ModuleDeclaration moduleDecl; /// The optional ModuleDeclaration in this file.
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35 Parser parser; /// The parser used to parse this file.
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36
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37 /// Indicates which passes have been run on this module.
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38 ///
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39 /// 0 = no pass$(BR)
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40 /// 1 = semantic pass 1$(BR)
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41 /// 2 = semantic pass 2
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42 uint semanticPass;
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43 Module[] modules; /// The imported modules.
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44
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45 InfoManager infoMan; /// Collects error messages.
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46
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47 this()
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48 {
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49 super(SYM.Module, null, null);
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50 }
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51
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52 /// Constructs a Module object.
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53 /// Params:
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54 /// filePath = file path to the source text; loaded in the constructor.
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55 /// infoMan = used for collecting error messages.
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56 this(string filePath, InfoManager infoMan = null)
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57 {
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58 this();
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59 this.sourceText = new SourceText(filePath);
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60 this.infoMan = infoMan;
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61 this.sourceText.load(infoMan);
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62 }
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63
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64 /// Returns the file path of the source text.
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65 string filePath()
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66 {
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67 return sourceText.filePath;
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68 }
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69
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70 /// Returns the file extension: "d" or "di".
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71 string fileExtension()
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72 {
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73 foreach_reverse(i, c; filePath)
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74 if (c == '.')
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75 return filePath[i+1..$];
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76 return "";
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77 }
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78
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79 /// Sets the parser to be used for parsing the source text.
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80 void setParser(Parser parser)
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81 {
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82 this.parser = parser;
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83 }
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84
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85 /// Parses the module.
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86 /// Throws:
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87 /// An Exception if the there's no ModuleDeclaration and
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88 /// the file name is an invalid or reserved D identifier.
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89 void parse()
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90 {
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91 if (this.parser is null)
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92 this.parser = new Parser(sourceText, infoMan);
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93
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94 this.root = parser.start();
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95 this.imports = parser.imports;
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96
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97 if (root.children.length)
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98 { // moduleDecl will be null if first node isn't a ModuleDeclaration.
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99 this.moduleDecl = root.children[0].Is!(ModuleDeclaration);
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100 if (this.moduleDecl)
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101 this.setFQN(moduleDecl.getFQN());
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102 }
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103
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104 if (!this.moduleFQN.length)
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105 { // Take base name of file path as module name.
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106 auto str = (new FilePath(filePath)).name();
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107 if (!Lexer.isValidUnreservedIdentifier(str))
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108 {
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109 auto location = parser.lexer.firstToken().getErrorLocation();
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110 auto msg = Format(MSG.InvalidModuleName, str);
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111 infoMan ~= new LexerError(location, msg);
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112 str = "_";
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113 }
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114 this.moduleFQN = this.moduleName = str;
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115 }
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116 }
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117
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118 /// Returns the first token of the module's source text.
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119 Token* firstToken()
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120 {
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121 return parser.lexer.firstToken();
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122 }
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123
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124 /// Returns true if there are errors in the source file.
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125 bool hasErrors()
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126 {
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127 return parser.errors.length || parser.lexer.errors.length;
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128 }
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129
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130 /// Returns a list of import paths.
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131 /// E.g.: ["dil/ast/Node", "dil/semantic/Module"]
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132 string[] getImportPaths()
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133 {
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134 string[] result;
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135 foreach (import_; imports)
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136 result ~= import_.getModuleFQNs(dirSep);
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137 return result;
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138 }
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139
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140 /// Returns the fully qualified name of this module.
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141 /// E.g.: dil.ast.Node
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142 string getFQN()
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143 {
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144 return moduleFQN;
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145 }
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146
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147 /// Set's the module's FQN.
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148 void setFQN(string moduleFQN)
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149 {
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150 uint i = moduleFQN.length;
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151 if (i != 0) // Don't decrement if string has zero length.
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152 i--;
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153 // Find last dot.
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154 for (; i != 0 && moduleFQN[i] != '.'; i--)
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155 {}
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156 this.moduleFQN = moduleFQN;
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157 this.packageName = moduleFQN[0..i];
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158 this.moduleName = moduleFQN[(i == 0 ? 0 : i+1) .. $];
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159 }
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160
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161 /// Returns the module's FQN with slashes instead of dots.
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162 /// E.g.: dil/ast/Node
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163 string getFQNPath()
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164 {
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165 string FQNPath = moduleFQN.dup;
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166 foreach (i, c; FQNPath)
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167 if (c == '.')
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168 FQNPath[i] = dirSep;
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169 return FQNPath;
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170 }
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171 }