Module: OracleSqlParser::Grammar::Expression::Case

Includes:
Treetop::Runtime
Included in:
OracleSqlParser::Grammar::Expression, CaseParser
Defined in:
lib/oracle-sql-parser/grammar/expression/case.rb

Defined Under Namespace

Modules: CaseExpression0, CaseExpression1, ComparisonExpr0, ElseClause0, ElseClause1, ElseExpr0, ReturnExpr0, SearchedCaseExpression0, SearchedCaseExpression1, SimpleCaseExpression0, SimpleCaseExpression1, SimpleCaseExpression2

Instance Method Summary collapse

Instance Method Details

#_nt_case_expression ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 38

def _nt_case_expression
  start_index = index
  if node_cache[:case_expression].has_key?(index)
    cached = node_cache[:case_expression][index]
    if cached
      node_cache[:case_expression][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_case_keyword
  s0 << r1
  if r1
    r3 = _nt_space
    if r3
      r2 = r3
    else
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s0 << r2
    if r2
      i4 = index
      r5 = _nt_simple_case_expression
      if r5
        r5 = SyntaxNode.new(input, (index-1)...index) if r5 == true
        r4 = r5
      else
        r6 = _nt_searched_case_expression
        if r6
          r6 = SyntaxNode.new(input, (index-1)...index) if r6 == true
          r4 = r6
        else
          @index = i4
          r4 = nil
        end
      end
      s0 << r4
      if r4
        r8 = _nt_space
        if r8
          r7 = r8
        else
          r7 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r7
        if r7
          r10 = _nt_else_clause
          if r10
            r9 = r10
          else
            r9 = instantiate_node(SyntaxNode,input, index...index)
          end
          s0 << r9
          if r9
            r12 = _nt_space
            if r12
              r11 = r12
            else
              r11 = instantiate_node(SyntaxNode,input, index...index)
            end
            s0 << r11
            if r11
              r13 = _nt_end_keyword
              s0 << r13
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(CaseExpression0)
    r0.extend(CaseExpression1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:case_expression][start_index] = r0

  r0
end

#_nt_comparison_expr ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 286

def _nt_comparison_expr
  start_index = index
  if node_cache[:comparison_expr].has_key?(index)
    cached = node_cache[:comparison_expr][index]
    if cached
      node_cache[:comparison_expr][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  r0 = _nt_expr
  r0.extend(ComparisonExpr0)
  r0.extend(ComparisonExpr0)

  node_cache[:comparison_expr][start_index] = r0

  r0
end

#_nt_else_clause ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 468

def _nt_else_clause
  start_index = index
  if node_cache[:else_clause].has_key?(index)
    cached = node_cache[:else_clause][index]
    if cached
      node_cache[:else_clause][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_else_keyword
  s0 << r1
  if r1
    r3 = _nt_space
    if r3
      r2 = r3
    else
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s0 << r2
    if r2
      r4 = _nt_else_expr
      s0 << r4
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(ElseClause0)
    r0.extend(ElseClause1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:else_clause][start_index] = r0

  r0
end

#_nt_else_expr ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 338

def _nt_else_expr
  start_index = index
  if node_cache[:else_expr].has_key?(index)
    cached = node_cache[:else_expr][index]
    if cached
      node_cache[:else_expr][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  r0 = _nt_expr
  r0.extend(ElseExpr0)
  r0.extend(ElseExpr0)

  node_cache[:else_expr][start_index] = r0

  r0
end

#_nt_return_expr ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 312

def _nt_return_expr
  start_index = index
  if node_cache[:return_expr].has_key?(index)
    cached = node_cache[:return_expr][index]
    if cached
      node_cache[:return_expr][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  r0 = _nt_expr
  r0.extend(ReturnExpr0)
  r0.extend(ReturnExpr0)

  node_cache[:return_expr][start_index] = r0

  r0
end

#_nt_searched_case_expression ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 385

def _nt_searched_case_expression
  start_index = index
  if node_cache[:searched_case_expression].has_key?(index)
    cached = node_cache[:searched_case_expression][index]
    if cached
      node_cache[:searched_case_expression][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_when_keyword
  s0 << r1
  if r1
    r3 = _nt_space
    if r3
      r2 = r3
    else
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s0 << r2
    if r2
      r4 = _nt_condition
      s0 << r4
      if r4
        r6 = _nt_space
        if r6
          r5 = r6
        else
          r5 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r5
        if r5
          r7 = _nt_then_keyword
          s0 << r7
          if r7
            r9 = _nt_space
            if r9
              r8 = r9
            else
              r8 = instantiate_node(SyntaxNode,input, index...index)
            end
            s0 << r8
            if r8
              r10 = _nt_return_expr
              s0 << r10
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(SearchedCaseExpression0)
    r0.extend(SearchedCaseExpression1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:searched_case_expression][start_index] = r0

  r0
end

#_nt_simple_case_expression ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 183

def _nt_simple_case_expression
  start_index = index
  if node_cache[:simple_case_expression].has_key?(index)
    cached = node_cache[:simple_case_expression][index]
    if cached
      node_cache[:simple_case_expression][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_expr
  s0 << r1
  if r1
    r2 = _nt_space
    s0 << r2
    if r2
      s3, i3 = [], index
      loop do
        i4, s4 = index, []
        r5 = _nt_when_keyword
        s4 << r5
        if r5
          r6 = _nt_space
          s4 << r6
          if r6
            r7 = _nt_comparison_expr
            s4 << r7
            if r7
              r8 = _nt_space
              s4 << r8
              if r8
                r9 = _nt_then_keyword
                s4 << r9
                if r9
                  r11 = _nt_space
                  if r11
                    r10 = r11
                  else
                    r10 = instantiate_node(SyntaxNode,input, index...index)
                  end
                  s4 << r10
                  if r10
                    r12 = _nt_return_expr
                    s4 << r12
                    if r12
                      r14 = _nt_space
                      if r14
                        r13 = r14
                      else
                        r13 = instantiate_node(SyntaxNode,input, index...index)
                      end
                      s4 << r13
                    end
                  end
                end
              end
            end
          end
        end
        if s4.last
          r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
          r4.extend(SimpleCaseExpression0)
        else
          @index = i4
          r4 = nil
        end
        if r4
          s3 << r4
        else
          break
        end
      end
      if s3.empty?
        @index = i3
        r3 = nil
      else
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
      end
      s0 << r3
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(SimpleCaseExpression1)
    r0.extend(SimpleCaseExpression2)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:simple_case_expression][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/oracle-sql-parser/grammar/expression/case.rb', line 8

def root
  @root ||= :case_expression
end