Arrange the source include director to mirror expected build structure instead of creating links.

1 files changed, 0 insertions, 670 deletions

diff --git a/src/include/token.H b/src/include/token.H
deleted file mode 100644
index b57b69d6..00000000
--- a/src/include/token.H
+++ /dev/null
@@ -1,670 +0,0 @@
-// Copyright (C) 2013-2014, Gabriel Dos Reis.
-// All rights reserved.
-// Written by Gabriel Dos Reis.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     - Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//
-//     - Redistributions in binary form must reproduce the above copyright
-//       notice, this list of conditions and the following disclaimer in
-//       the documentation and/or other materials provided with the
-//       distribution.
-//
-//     - Neither the name of OpenAxiom. nor the names of its contributors
-//       may be used to endorse or promote products derived from this
-//       software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef OPENAXIOM_TOKEN_included
-#define OPENAXIOM_TOKEN_included
-
-#include <stdint.h>
-#include <stack>
-#include <iosfwd>
-#include <open-axiom/Input>
-#include <open-axiom/dialect>
-
-namespace OpenAxiom {
-   // Categorization of Boot and Spad tokens.
-   enum class TokenCategory : uint8_t {
-      Unclassified,             // token of unknown class
-      Whitespace,               // sequence of white-space characters
-      Comment,                  // a description of an ignorable comment
-      Punctuator,               // a punctuator character
-      Operator,                 // an operator both symbolic and alphabetic
-      Integer,                  // an integer literal
-      FloatingPoint,            // a floating-point literal
-      String,                   // a string literal
-      Keyword,                  // a reserved word both symbolic and alphabetic
-      Identifier,               // an identifier
-      Formatting,               // a layout formatting token
-      Junk,                     // invalid/malformed token
-      EOS                       // end-of-token-stream indicator
-   };
-
-   std::ostream& operator<<(std::ostream&, TokenCategory);
-
-   // The abstract value associated with a token.
-   enum class TokenValue : uint8_t {
-#undef OPENAXIOM_DEFINE_TOKEN
-#define OPENAXIOM_DEFINE_TOKEN(T, ...)  T,
-#include <open-axiom/token-value>
-#undef OPENAXIOM_DEFINE_TOKEN
-      Artificial,               // Tokens after this are artificial
-      Indent,                   // new line indentation, greater than previous
-      Unindent,                 // new line indentation, less than previous
-      Justify,                  // align indentation with preceding line.
-
-      EndOfStream               // end of token stream
-   };
-
-   std::ostream& operator<<(std::ostream&, TokenValue);
-
-   // Datatypes for locating lines and columns.
-   using LineNumber = std::size_t;
-   using ColumnIndex = std::size_t;
-
-   struct Locus {
-      LineNumber line;
-      ColumnIndex column;
-   };
-
-   std::ostream& operator<<(std::ostream&, const Locus&);
-
-   // Program text region
-   struct Region {
-      Locus start;
-      Locus end;
-   };
-
-   // Given a symbolic or alphabetic token, retrieve its category
-   // and associated abstract value.
-   struct TokenClassification {
-      TokenCategory category;
-      TokenValue value;
-
-      explicit operator bool() const {
-         return category != TokenCategory::Unclassified;
-      }
-   };
-
-   TokenClassification classify(const std::string&);
-
-   // Token data structure: a region of text with a classification.
-   struct Token : TokenClassification, Region {
-      using Location = Locus;
-   };
-
-   // Cursor into a fragment.
-   struct FragmentCursor {
-      std::size_t line;         // index of a line in a fragment
-      std::size_t column;       // column number at line.
-
-      inline FragmentCursor& operator++() {
-         ++column;
-         return *this;
-      }
-
-      inline FragmentCursor operator++(int) {
-         auto tmp = *this;
-         ++*this;
-         return tmp;
-      }
-
-      inline FragmentCursor& operator--() {
-         --column;
-         return *this;
-      }
-
-      inline FragmentCursor operator--(int) {
-         auto tmp = *this;
-         --*this;
-         return tmp;
-      }
-   };
-
-   // -- Exception types
-   struct EndOfStringUnseen {
-      LineNumber line;
-      ColumnIndex column;
-   };
-
-   struct MissingExponent {
-      LineNumber line;
-      ColumnIndex column;
-   };
-
-   // Object of this datatype decompose a program fragment into a
-   // token stream.  The tokens are of type indicated by Tok.
-   template<typename Frag, typename Tok>
-   struct Tokenizer {
-      Tokenizer(Frag& f)
-            : frag(f),
-              pos{ 0, frag.front().indent }
-      {
-         indents.push(pos.column);
-      }
-
-      bool eos() const {
-         return pos.line >= frag.size()
-            or (pos.line + 1 == frag.size() and pos.column >= frag.back().size());
-      }
-
-      Tok get(Language = Language::Spad);
-   private:
-      Frag& frag;
-      FragmentCursor pos;
-      std::stack<ColumnIndex> indents;
-
-      std::size_t line_length() const { return frag(pos).size(); }
-      LineNumber next_line_number() const {
-         return pos.line + 1 < frag.size()
-            ? frag[pos.line + 1].number
-            : frag.back().number + 1;
-      }
-      ColumnIndex next_indentation() const {
-         return pos.line + 1 < frag.size() ? frag[pos.line + 1].indent : 0;
-      }
-
-      LineNumber line_number() const {
-         return pos.line < frag.size()
-            ? frag(pos).number
-            : frag.back().number + 1;
-      }
-
-      ColumnIndex column_number() const {
-         return pos.line < frag.size() ? pos.column : 0;
-      }
-
-      using Locus = typename Tok::Location;
-      Locus current_locus() {
-         return { line_number(), column_number() };
-      }
-   };
-
-   bool separator_or_punctuator(uint8_t);
-
-   template<typename T>
-   inline void comment_token(T& t, TokenValue v) {
-      t.category = TokenCategory::Comment;
-      t.value = v;
-   }
-
-   template<typename T>
-   inline void operator_token(T& t, TokenValue v) {
-      t.category = TokenCategory::Operator;
-      t.value = v;
-   }
-
-   template<typename T>
-   inline void punctuator_token(T& t, TokenValue v) {
-      t.category = TokenCategory::Punctuator;
-      t.value = v;
-   }
-
-   template<typename L, typename T>
-   static void junk(L& line, ColumnIndex& idx, T& t) {
-      while (idx < line.size() and not separator_or_punctuator(line[idx]))
-         ++idx;
-      t.category = TokenCategory::Junk;
-   }
-
-   template<typename L>
-   inline void
-   skip_whitespace(L& line, ColumnIndex& idx) {
-      while (idx < line.size() and isspace(line[idx]))
-         ++idx;
-   }
-
-   template<typename Frag, typename Tok>
-   void string_literal(Frag& frag, FragmentCursor& pos, Tok& t) {
-      bool done = false;
-      bool escape = false;
-      while (frag.covering(pos) && not done) {
-         switch (frag(pos)[pos.column++]) {
-         case '"': done = !escape;
-            // fallthrough
-         default: escape = false; break;
-         case '_':
-            if (pos.column == frag(pos).size()
-                and pos.line < frag.size() - 1) {
-               ++pos.line;
-               pos.column = 0;
-            }
-            else
-               escape = !escape;
-            break;
-         }
-      }
-      if (not done)
-         throw EndOfStringUnseen{ frag(pos).number, pos.column };
-      t.category = TokenCategory::String;
-   }
-
-   template<typename L>
-   void skip_to_end_of_integer(L& line, ColumnIndex& idx) {
-      while (idx < line.size() and isdigit(line[idx]))
-         ++idx;
-   }
-   
-   template<typename L, typename T>
-   void integer(L& line, ColumnIndex& idx, T& t) {
-      skip_to_end_of_integer(line, idx);
-      t.category = TokenCategory::Integer;
-   }
-
-   template<typename L, typename T>
-   T& number(L& line, ColumnIndex& idx, T& t) {
-      integer(line, idx, t);
-      if (idx >= line.size() or line[idx] != '.')
-         return t;
-      if (++idx >= line.size() or not isdigit(line[idx])) {
-         --idx;
-         return t;
-      }
-
-      t.category = TokenCategory::FloatingPoint;
-      skip_to_end_of_integer(line, idx);
-      if (idx >= line.size() or (line[idx] != 'e' and line[idx] != 'E'))
-         return t;
-      if (++idx < line.size() and (line[idx] == '+' or line[idx] == '-'))
-         ++idx;
-      if (idx >= line.size() or not isdigit(line[idx]))
-         throw MissingExponent{ line.number, idx };
-      skip_to_end_of_integer(line, idx);
-      return t;
-   }
-
-   inline bool
-   identifier_head(uint8_t c) {
-      return isalpha(c) or c == '%' or c == '_';
-   }
-
-   inline bool
-   identifier_part(uint8_t c) {
-      return identifier_head(c) or isdigit(c);
-   }
-
-   inline bool
-   identifier_suffix(uint8_t c) {
-      return c == '!' or c == '?';
-   }
-
-   inline bool internal_prefix(uint8_t c) {
-      return c == '%' or c == '$';
-   }
-
-   template<typename L>
-   inline void
-   skip_prefix(L& line, ColumnIndex& idx, uint8_t c) {
-      while (idx < line.size() and line[idx] == c)
-         ++idx;
-   }
-
-   template<typename L, typename T>
-   T& identifier(L& line, ColumnIndex& idx, T& t, Language dialect) {
-      t.category = TokenCategory::Identifier;
-
-      ColumnIndex start = --idx; // idx was ahead by 1.
-      if (dialect == Language::Boot and internal_prefix(line[idx]))
-         skip_prefix(line, idx, line[idx]);
-      bool saw_escape = false;
-      while (idx < line.size()) {
-         if (not identifier_part(line[idx]) and line[idx - 1] != '_')
-            break;
-         else if (line[idx] == '_')
-            saw_escape = true;
-         ++idx;
-      }
-      while (idx < line.size() and identifier_suffix(line[idx]))
-         ++idx;
-
-      if (saw_escape)
-         t.category = TokenCategory::Identifier;
-      else if (auto info = classify(line.sub_string(start, idx))) {
-         t.category = info.category;
-         t.value = info.value;
-      }
-      return t;
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   left_paren_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      punctuator_token(t, TokenValue::OpenParen);
-      if (frag.covering(pos) and frag[pos] == '|') {
-         ++pos;
-         t.value = TokenValue::OpenMetaParen;
-      }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   left_brace_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      punctuator_token(t, TokenValue::OpenBrace);
-      if (frag.covering(pos) and frag[pos] == '|') {
-         ++pos;
-         t.value = TokenValue::OpenMetaBrace;
-      }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   left_bracket_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      punctuator_token(t, TokenValue::OpenBracket);
-      if (frag.covering(pos) and frag[pos] == '|') {
-         ++pos;
-         t.value = TokenValue::OpenMetaBracket;
-      }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   colon_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Colon);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case ':': t.value = TokenValue::ColonColon; ++pos; break;
-         case '=': t.value = TokenValue::ColonEq; ++pos; break;
-         case '-': t.value = TokenValue::ColonDash; ++pos; break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   star_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Star);
-      if (frag.covering(pos) and frag[pos] == '*') {
-         t.value = TokenValue::StarStar;
-         ++pos;
-      }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   slash_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Slash);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '/': t.value = TokenValue::SlashSlash; ++pos; break;
-         case '\\': t.value = TokenValue::SlashBackslash; ++pos; break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   backslash_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Backslash);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '\\': t.value = TokenValue::BackslashBackslash; ++pos; break;
-         case '/': t.value = TokenValue::BackslashSlash; ++pos; break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   less_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Less);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '-': t.value = TokenValue::LeftArrow; ++pos; break;
-         case '<': t.value = TokenValue::OpenChevron; ++pos; break;
-         case '=':
-            t.value = TokenValue::LessEq;
-            if (frag.covering(++pos) and frag[pos] == '>') {
-               t.value = TokenValue::Equiv;
-               ++pos;
-            }
-            break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   equal_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Eq);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '>': t.value = TokenValue::Implies; ++pos; break;
-         case '=':
-            t.value = TokenValue::EqEq;
-            if (frag.covering(++pos) and frag[pos] == '>') {
-               t.value = TokenValue::FatArrow;
-               ++pos;
-            }
-            break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   tilde_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Tilde);
-      if (frag.covering(pos) and frag[pos] == '=') {
-         t.value = TokenValue::TildeEq;
-         ++pos;
-      }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   greater_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Greater);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '=': t.value = TokenValue::GreaterEq; ++pos; break;
-         case '>': t.value = TokenValue::CloseChevron; ++pos; break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   bar_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      punctuator_token(t, TokenValue::Bar);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case ']': t.value = TokenValue::CloseMetaBracket; ++pos; break;
-         case '}': t.value = TokenValue::CloseMetaBrace; ++pos; break;
-         case ')': t.value = TokenValue::CloseMetaParen; ++pos; break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   minus_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Minus); 
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '>': t.value = TokenValue::RightArrow; ++pos; break;
-         case '-':
-            comment_token(t, TokenValue::Wisecrack);
-            pos.column = frag(pos).size();
-            break;
-         }
-   }
-
-
-   template<typename Frag, typename Tok>
-   static void
-   plus_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Plus);
-      if (frag.covering(pos))
-         switch (frag[pos]) {
-         case '+':
-            comment_token(t, TokenValue::Commentary);
-            pos.column = frag(pos).size();
-            break;
-         case '-':
-            if (pos.column + 1 < frag(pos).size()
-                and frag(pos)[pos.column + 1] == '>') {
-               t.value = TokenValue::MapsTo;
-               pos.column += 2;
-            }
-            break;
-         default: break;
-         }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   dot_et_al(Frag& frag, FragmentCursor& pos, Tok& t) {
-      operator_token(t, TokenValue::Dot);
-      if (frag.covering(pos) and frag[pos] == '.') {
-         t.value = TokenValue::DotDot;
-         ++pos;
-      }
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   dollar_et_al(Frag& frag, FragmentCursor& pos, Tok& t, Language dialect) {
-      if (dialect != Language::Boot or not frag.covering(pos)
-          or separator_or_punctuator(frag[pos]))
-         operator_token(t, TokenValue::Dollar);
-      else
-         identifier(frag(pos), pos.column, t, dialect);
-   }
-
-   template<typename Frag, typename Tok>
-   static void
-   sharp_et_al(Frag& frag, FragmentCursor& pos, Tok& t, Language dialect) {
-      if (dialect != Language::Lisp)
-         operator_token(t, TokenValue::Sharp);
-      else if (frag.covering(pos))
-         switch (frag[pos++]) {
-         case '(': punctuator_token(t, TokenValue::SharpLeftParen); break;
-         case '\'': operator_token(t, TokenValue::SharpApostrophe); break;
-         case ':': operator_token(t, TokenValue::SharpColon); break;
-         case '+': punctuator_token(t, TokenValue::SharpPlus); break;
-         case '-': punctuator_token(t, TokenValue::SharpMinus); break;
-         case '.': operator_token(t, TokenValue::SharpDot); break;
-         default: --pos; break;
-         }
-   }
-
-
-   template<typename Frag, typename Tok>
-   Tok Tokenizer<Frag, Tok>::get(Language dialect) {
-      Tok t { };
-      t.start = current_locus();
-      
-      if (eos()) {
-         t.category = TokenCategory::EOS;
-         t.end = current_locus();
-         return t;
-      }
-      else if (isspace(frag[pos])) {
-         skip_whitespace(frag(pos), pos.column);
-         t.category = TokenCategory::Whitespace;
-         t.end = current_locus();
-         return t;
-      }
-      else if (pos.column == line_length() - 1 and frag(pos).back() == '_') {
-         ++pos.line;
-         pos.column = frag(pos).indent;
-      }
-      else if (pos.column == line_length()) {
-         auto indent = indents.top();
-         auto next_indent = next_indentation();
-         t.start = t.end = { next_line_number(), next_indent };
-         if (indent < next_indent) {
-            indents.push(next_indent);
-            ++pos.line;
-            pos.column = next_indent;
-            t.category = TokenCategory::Formatting;
-            t.value = TokenValue::Indent;
-         }
-         else if (indent > next_indent) {
-            indents.pop();
-            t.category = TokenCategory::Formatting;
-            t.value = TokenValue::Unindent;
-         }
-         else {
-            ++pos.line;
-            pos.column = next_indent;
-            t.category = TokenCategory::Formatting;
-            t.value = TokenValue::Justify;
-         }
-         return t;
-      }
-
-      switch (auto c = frag.advance(pos)) {
-      case '#': sharp_et_al(frag, pos, t, dialect); break;
-      case '@': operator_token(t, TokenValue::At); break;
-      case '^': operator_token(t, TokenValue::Caret); break;
-      case '&': punctuator_token(t, TokenValue::Ampersand); break;         
-      case '!': punctuator_token(t, TokenValue::Exclamation); break;
-      case '\'': punctuator_token(t, TokenValue::Apostrophe); break;
-      case ',': punctuator_token(t, TokenValue::Comma); break;
-      case ';': punctuator_token(t, TokenValue::Semicolon); break;
-      case '`': punctuator_token(t, TokenValue::Backquote); break;
-      case '(': left_paren_et_al(frag, pos, t); break;
-      case ')': punctuator_token(t, TokenValue::CloseParen); break;
-      case '{': left_brace_et_al(frag, pos, t); break;
-      case '}': punctuator_token(t, TokenValue::CloseBrace); break;
-      case '[': left_bracket_et_al(frag, pos, t); break;
-      case ']': punctuator_token(t, TokenValue::CloseBracket); break;
-      case ':': colon_et_al(frag, pos, t); break;
-      case '*': star_et_al(frag, pos, t); break;
-      case '/': slash_et_al(frag, pos, t); break;
-      case '\\': backslash_et_al(frag, pos, t); break;
-      case '<': less_et_al(frag, pos, t); break;
-      case '=': equal_et_al(frag, pos, t); break;
-      case '~': tilde_et_al(frag, pos, t); break;
-      case '>': greater_et_al(frag, pos, t); break;
-      case '|': bar_et_al(frag, pos, t); break;
-      case '-': minus_et_al(frag, pos, t); break;
-      case '+': plus_et_al(frag, pos, t); break;
-      case '.': dot_et_al(frag, pos, t); break;
-      case '"': string_literal(frag, pos, t); break;
-      case '$': dollar_et_al(frag, pos, t, dialect); break;
-
-      default:
-         if (isdigit(c))
-            number(frag(pos), pos.column, t);
-         else if (identifier_head(c))
-            identifier(frag(pos), pos.column, t, dialect);
-         else
-            junk(frag(pos), pos.column, t);
-         break;
-      }
-
-      t.end = { frag(pos).number, pos.column };
-      return t;
-   }
-
-   // -- Token streams.
-   template<typename T>
-   struct TokenStream : std::vector<T> {
-      template<typename Frag>
-      explicit TokenStream(Frag& f, Language dialect = Language::Spad) {
-         Tokenizer<Frag, T> lex { f };
-         while (auto t = lex.get(dialect))
-            this->push_back(t);
-      }
-   };
-}
-
-#endif  // OPENAXIOM_TOKEN_included