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+%{
+/***************************************************************************
+ * Copyright (C) 2005 by Alexander Dymo *
+ * adymo@kdevelop.org *
+ * Copyright (C) 2006 by Andreas Pakulat *
+ * apaku@gmx.de *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU Library General Public License as *
+ * published by the Free Software Foundation; either version 2 of the *
+ * License, or (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU Library General Public *
+ * License along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+/**
+@file qmake.yy
+QMake Parser
+
+Simple LALR parser which builds the syntax tree (see @ref QMake::AST).
+
+@todo Recognize comments after statements like:
+SOURCES = foo #regognize me
+
+@fixme Parser fails on files that do not end with a newline
+@fixme 1 shift/reduce conflict in "line_body" rule
+*/
+
+#include <qvaluestack.h>
+#include "qmakeast.h"
+#include <qregexp.h>
+
+#define YYSTYPE_IS_DECLARED
+
+namespace QMake
+{
+ class Lexer;
+
+/**
+The yylval type.
+*/
+struct Result {
+ Result(): node(0) {}
+
+ /**Type of semantic value for simple grammar rules.*/
+ QString value;
+ /**Type of semantic value for grammar rules which are parts of AST.*/
+ AST *node;
+ /**Type of semantic value for "multiline_values" grammar rule.
+ Each line of multiline value is stored as a string in the list.
+
+ For example we have in .pro file:
+ @code
+ SOURCE = foo1.cpp \
+ foo2.cpp \
+ foo3.cpp foo4.cpp
+ @endcode
+ The string list will be populated with three strings:
+ <pre>
+ foo1.cpp
+ foo2.cpp
+ foo3.cpp foo4.cpp
+ </pre>
+ */
+ QStringList values;
+ QString indent;
+};
+
+#define YYSTYPE Result
+typedef Result YYSTYPE;
+}
+
+extern int QMakelex( QMake::Result* yylval, QMake::Lexer* lexer );
+
+/**
+The stack to store ProjectAST pointers when a new child
+ProjectAST is created and filled with statements.
+
+Parser creates root ProjectAST for a .pro file, pushes it onto the stack and starts
+adding statements. Each statement is added as a child StatementAST to the ProjectAST
+currently on the top in the stack.
+
+When a scope or function scope statement is parsed, the child ProjectAST is created
+and pushed onto the stack. Therefore all statements which belong to the scope
+or function scope are added as childs to their direct parent (scope or function scope).
+*/
+//QValueStack<ProjectAST*> projects;
+
+/**
+The current depth of AST node is stored here.
+AST depth is important to know because automatic indentation can
+be easily implemented (the parser itself looses all information
+about indentation).
+*/
+// int depth = 0;
+
+/*
+To debug this parser, put the line below into the next bison file section.
+Don't forget to uncomment "yydebug = 1" line in qmakedriver.cpp.
+%debug
+*/
+%}
+
+%skeleton "lalr1.cc"
+%define "parser_class_name" "Parser"
+%name-prefix="QMake"
+%parse-param { QMake::Lexer* lexer }
+%parse-param { QValueStack<ProjectAST*>& projects }
+%parse-param { int depth }
+%lex-param { QMake::Lexer* lexer }
+%start project
+
+%token ID_SIMPLE
+%token EQ
+%token PLUSEQ
+%token MINUSEQ
+%token STAREQ
+%token TILDEEQ
+%token LBRACE
+%token RBRACE
+%token COLON
+%token NEWLINE
+%token COMMENT
+%token CONT
+%token COMMENT_CONT
+%token RCURLY
+%token LCURLY
+%token ID_ARGS
+%token QUOTED_VARIABLE_VALUE
+%token VARIABLE_VALUE
+%token LIST_WS
+%token ENDOFFILE
+%%
+
+project :
+ {
+ ProjectAST *projectAST = new ProjectAST();
+ projects.push(projectAST);
+ }
+ statements
+ ;
+
+statements : statements statement
+ {
+ projects.top()->addChildAST($<node>2);
+ $<node>2->setDepth(depth);
+ }
+ |
+ ;
+
+statement : variable_assignment
+ {
+ $<node>$ = $<node>1;
+ }
+ | scope
+ {
+ $<node>$ = $<node>1;
+ }
+ | function_call
+ {
+ $<node>$ = $<node>1;
+ }
+ | comment
+ {
+ $<node>$ = $<node>1;
+ }
+ | emptyline
+ {
+ $<node>$ = new NewLineAST();
+ }
+ ;
+
+variable_assignment : ID_SIMPLE operator multiline_values listws NEWLINE
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values = $<values>3 ;
+ node->values.append( $<value>4 );
+ node->values.append( $<value>5 );
+ node->indent = $<indent>3;
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator multiline_values listws ENDOFFILE
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values = $<values>3 ;
+ node->values.append( $<value>4 );
+ node->indent = $<indent>3;
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator multiline_values listws CONT
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values = $<values>3 ;
+ node->values.append( $<value>4 );
+ node->values.append( $<value>5 );
+ node->indent = $<indent>3;
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator multiline_values listws COMMENT_CONT
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values = $<values>3 ;
+ node->values.append( $<value>4 );
+ node->values.append( $<value>5 );
+ node->indent = $<indent>3;
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator listws NEWLINE
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values.append( $<value>3 );
+ node->values.append( $<value>4 );
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator listws ENDOFFILE
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values.append( $<value>3 );
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator listws COMMENT
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values.append( $<value>3 );
+ node->values.append( $<value>4 );
+ $<node>$ = node;
+ }
+ | ID_SIMPLE operator multiline_values listws COMMENT
+ {
+ AssignmentAST *node = new AssignmentAST();
+ node->scopedID = $<value>1;
+ node->op = $<value>2;
+ node->values = $<values>3;
+ node->values.append( $<value>4 );
+ node->values.append( $<value>5 );
+ node->indent = $<indent>3;
+ $<node>$ = node;
+ }
+ ;
+
+possible_value : variable_value | COMMENT_CONT | CONT
+
+multiline_values : multiline_values LIST_WS possible_value
+ {
+ $<values>$.append( $<value>2 );
+ $<values>$.append( $<value>3 );
+ }
+ | multiline_values variable_value
+ {
+ $<values>$.append( $<value>2 );
+ }
+ | multiline_values listws CONT listws possible_value
+ {
+ $<values>$.append( $<value>2 );
+ $<values>$.append( $<value>3 );
+ $<values>$.append( $<value>4 );
+ $<values>$.append( $<value>5 );
+ if( $<indent>4 != "" && $<indent>$ == "" )
+ $<indent>$ = $<indent>4;
+ }
+ | multiline_values listws COMMENT_CONT listws possible_value
+ {
+ $<values>$.append( $<value>2 );
+ $<values>$.append( $<value>3 );
+ $<values>$.append( $<value>4 );
+ $<values>$.append( $<value>5 );
+ if( $<indent>4 != "" && $<indent>$ == "" )
+ $<indent>$ = $<indent>4;
+ }
+ | listws possible_value
+ {
+ $<values>$ = QStringList();
+ $<values>$.append( $<value>1 );
+ $<values>$.append( $<value>2 );
+ }
+ ;
+
+
+variable_value : VARIABLE_VALUE { $<value>$ = $<value>1; }
+ | QUOTED_VARIABLE_VALUE { $<value>$ = $<value>1; }
+ ;
+
+
+listws: LIST_WS
+ {
+ $<value>$ = $<value>1;
+ $<indent>$ = $<value>1;
+ }
+ |
+ {
+ $<value>$ = QString();
+ $<indent>$ = QString();
+ }
+ ;
+operator : EQ
+ {
+ $<value>$ = $<value>1;
+ }
+ | PLUSEQ
+ {
+ $<value>$ = $<value>1;
+ }
+ | MINUSEQ
+ {
+ $<value>$ = $<value>1;
+ }
+ | STAREQ
+ {
+ $<value>$ = $<value>1;
+ }
+ | TILDEEQ
+ {
+ $<value>$ = $<value>1;
+ }
+ ;
+
+scope : ID_SIMPLE
+ {
+ ProjectAST *projectAST = new ProjectAST(ProjectAST::Scope);
+ projects.push(projectAST);
+ projects.top()->scopedID = $<value>1;
+ depth++;
+ }
+ scope_body
+ {
+ $<node>$ = projects.pop();
+ depth--;
+ }
+ ;
+
+function_call : ID_SIMPLE LBRACE function_args RBRACE
+ {
+ ProjectAST *projectAST = new ProjectAST(ProjectAST::FunctionScope);
+ projects.push(projectAST);
+ projects.top()->scopedID = $<value>1;
+ projects.top()->args = $<value>3;
+ depth++;
+
+ //qWarning("%s", $<value>1.ascii());
+ if ($<value>1.contains("include"))
+ {
+ IncludeAST *includeAST = new IncludeAST();
+ includeAST->projectName = $<value>3;
+ projects.top()->addChildAST(includeAST);
+ includeAST->setDepth(depth);
+ }
+ }
+ scope_body
+ else_statement
+ {
+ $<node>$ = projects.pop();
+ depth--;
+ }
+ ;
+
+function_args : ID_ARGS { $<value>$ = $<value>1; }
+ | { $<value>$ = ""; }
+ ;
+
+scope_body : LCURLY statements RCURLY
+ | COLON statement
+ {
+ projects.top()->addChildAST($<node>2);
+ $<node>2->setDepth(depth);
+ }
+ |
+ ;
+
+else_statement : "else" LCURLY
+ {
+ ProjectAST *projectAST = new ProjectAST(ProjectAST::FunctionScope);
+ projects.push(projectAST);
+ projects.top()->scopedID = "else";
+ projects.top()->args = "";
+ depth++;
+ }
+ scope_body RCURLY
+ {
+ $<node>$ = projects.pop();
+ depth--;
+ }
+ |
+ {
+ $<node>$ = new ProjectAST();
+ }
+ ;
+
+comment : COMMENT
+ {
+ CommentAST *node = new CommentAST();
+ node->comment = $<value>1;
+ $<node>$ = node;
+ }
+ ;
+
+emptyline : NEWLINE
+ ;
+
+%%
+
+
+namespace QMake
+{
+ void Parser::error(const location_type& /*l*/, const std::string& m)
+ {
+ std::cerr << m << std::endl;
+ }
+}
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