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1229 lines
49 KiB
1229 lines
49 KiB
from copy import deepcopy
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from dataclasses import dataclass
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from enum import Enum, auto
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from typing import Set, Tuple, Dict, Union, List, Optional
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from engine.types import *
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from engine.utils import enlist, base62uuid, base62alp, get_legal_name
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from reconstruct.storage import Context, TableInfo, ColRef
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class ast_node:
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header = []
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types = dict()
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first_order = False
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def __init__(self, parent:Optional["ast_node"], node, context:Optional[Context] = None):
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self.context = parent.context if context is None else context
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self.parent = parent
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self.sql = ''
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self.ccode = ''
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if hasattr(parent, 'datasource'):
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self.datasource = parent.datasource
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else:
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self.datasource = None
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self.init(node)
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self.produce(node)
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self.spawn(node)
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self.consume(node)
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def emit(self, code):
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self.context.emit(code)
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def add(self, code):
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self.sql += code + ' '
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def addc(self, code):
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self.ccode += code + '\n'
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name = 'null'
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def init(self, _):
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if self.parent is None:
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self.context.sql_begin()
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self.add(self.__class__.name.upper())
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def produce(self, _):
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pass
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def spawn(self, _):
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pass
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def consume(self, _):
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if self.parent is None:
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self.emit(self.sql+';\n')
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self.context.sql_end()
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from reconstruct.expr import expr, fastscan
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class projection(ast_node):
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name = 'projection'
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first_order = 'select'
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def init(self, _):
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# skip default init
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pass
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def produce(self, node):
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self.add('SELECT')
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self.has_postproc = False
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if 'select' in node:
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p = node['select']
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self.distinct = False
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elif 'select_distinct' in node:
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p = node['select_distinct']
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self.distinct = True
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self.projections = p if type(p) is list else [p]
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if self.parent is None:
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self.context.sql_begin()
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self.postproc_fname = 'dll_' + base62uuid(6)
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self.context.postproc_begin(self.postproc_fname)
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def spawn(self, node):
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self.datasource = join(self, [], self.context) # datasource is Join instead of TableInfo
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self.assumptions = []
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if 'from' in node:
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from_clause = node['from']['table_source']
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self.datasource = join(self, from_clause)
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if 'assumptions' in node['from']:
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self.assumptions = enlist(node['from']['assumptions'])
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if self.datasource is not None:
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self.datasource_changed = True
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self.prev_datasource = self.context.datasource
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self.context.datasource = self.datasource
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if 'where' in node:
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self.where = filter(self, node['where'])
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else:
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self.where = None
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if type(self.datasource) is join:
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self.datasource.process_join_conditions()
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if 'groupby' in node:
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self.context.special_gb = groupby.check_special(self, node['groupby'])
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def consume(self, node):
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# deal with projections
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out_table_varname = 'out_'+base62uuid(6)
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if 'into' in node:
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out_table_name = node['into']
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else:
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out_table_name = out_table_varname
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self.out_table : TableInfo = TableInfo(out_table_name, [], self.context)
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self.out_table.contextname_cpp = out_table_varname
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cols = []
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self.col_ext : Set[ColRef]= set()
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col_exprs : List[Tuple[str, Types]] = []
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proj_map : Dict[int, List[Union[Types, int, str, expr]]]= dict()
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self.var_table = dict()
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# self.sp_refs = set()
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i = 0
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for proj in self.projections:
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compound = False
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self.datasource.rec = set()
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name = ''
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this_type = AnyT
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if type(proj) is dict or proj == '*':
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if 'value' in proj:
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e = proj['value']
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elif proj == '*':
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e = '*'
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else:
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print('unknown projection', proj)
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proj_expr = expr(self, e)
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sql_expr = expr(self, e, c_code=False)
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this_type = proj_expr.type
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name = proj_expr.sql
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compound = [proj_expr.is_compound > 1] # compound column
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proj_expr.cols_mentioned = self.datasource.rec
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alias = ''
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if 'name' in proj: # renaming column by AS keyword
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alias = proj['name']
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if not proj_expr.is_special:
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if proj_expr.node == '*':
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name = [c.get_full_name() for c in self.datasource.rec]
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this_type = [c.type for c in self.datasource.rec]
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compound = [c.compound for c in self.datasource.rec]
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proj_expr = [expr(self, c.name) for c in self.datasource.rec]
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else:
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y = lambda x:x
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count = lambda : 'count(*)'
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name = enlist(sql_expr.eval(False, y, count=count))
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this_type = enlist(this_type)
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proj_expr = enlist(proj_expr)
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for t, n, pexpr, cp in zip(this_type, name, proj_expr, compound):
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t = VectorT(t) if cp else t
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offset = len(col_exprs)
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if n not in self.var_table:
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self.var_table[n] = offset
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if pexpr.is_ColExpr and type(pexpr.raw_col) is ColRef:
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for _alias in (pexpr.raw_col.table.alias):
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self.var_table[f'{_alias}.'+n] = offset
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proj_map[i] = [t, offset, pexpr]
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col_expr = n + ' AS ' + alias if alias else n
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if alias:
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self.var_table[alias] = offset
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col_exprs.append((col_expr, t))
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i += 1
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else:
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self.context.headers.add('"./server/aggregations.h"')
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self.has_postproc = True
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if self.datasource.rec is not None:
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self.col_ext = self.col_ext.union(self.datasource.rec)
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proj_map[i] = [this_type, proj_expr.sql, proj_expr]
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i += 1
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name = enlist(name)
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disp_name = [get_legal_name(alias if alias else n) for n in name]
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this_type = enlist(this_type)
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elif type(proj) is str:
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col = self.datasource.get_col(proj)
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this_type = col.type
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disp_name = proj
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print('Unknown behavior:', proj, 'is str')
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# name = col.name
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self.datasource.rec = None
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# TODO: Type deduction in Python
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for t, n, c in zip(this_type, disp_name, compound):
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cols.append(ColRef(t, self.out_table, None, n, len(cols), compound=c))
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self.out_table.add_cols(cols, new = False)
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if 'groupby' in node:
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self.group_node = groupby(self, node['groupby'])
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if self.group_node.use_sp_gb:
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self.has_postproc = True
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else:
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self.group_node = None
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if not self.has_postproc and self.distinct:
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self.add('DISTINCT')
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self.col_ext = [c for c in self.col_ext if c.name not in self.var_table] # remove duplicates in self.var_table
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col_ext_names = [c.name for c in self.col_ext]
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self.add(', '.join([c[0] for c in col_exprs] + col_ext_names))
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_base_offset = len(col_exprs)
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for i, col in enumerate(self.col_ext):
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if col.name not in self.var_table:
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offset = i + _base_offset
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self.var_table[col.name] = offset
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for n in (col.table.alias):
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self.var_table[f'{n}.'+col.name] = offset
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def finialize(astnode:ast_node):
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if(astnode is not None):
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self.add(astnode.sql)
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finialize(self.datasource)
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finialize(self.where)
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if self.group_node and not self.group_node.use_sp_gb:
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self.add(self.group_node.sql)
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if self.col_ext or self.group_node and self.group_node.use_sp_gb:
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self.has_postproc = True
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o = self.assumptions
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if 'orderby' in node:
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o.extend(enlist(node['orderby']))
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if o:
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self.add(orderby(self, o).sql)
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if 'outfile' in node:
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self.outfile = outfile(self, node['outfile'], sql = self.sql)
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if not self.has_postproc:
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self.sql += self.outfile.sql
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else:
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self.outfile = None
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# reset special_gb in case of subquery.
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self.context.special_gb = False
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if self.parent is None:
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self.emit(self.sql+';\n')
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else:
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# TODO: subquery, name create tmp-table from subquery w/ alias as name
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pass
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# cpp module codegen
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self.context.has_dll = True
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# extract typed-columns from result-set
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vid2cname = [0]*len(self.var_table)
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self.pyname2cname = dict()
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typenames = [c[1] for c in col_exprs] + [c.type for c in self.col_ext]
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length_name = 'len_' + base62uuid(6)
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self.context.emitc(f'auto {length_name} = server->cnt;')
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for v, idx in self.var_table.items():
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vname = get_legal_name(v) + '_' + base62uuid(3)
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self.pyname2cname[v] = vname
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self.context.emitc(f'auto {vname} = ColRef<{typenames[idx].cname}>({length_name}, server->getCol({idx}));')
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vid2cname[idx] = vname
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# Create table into context
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out_typenames = [None] * len(proj_map)
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for key, val in proj_map.items():
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if type(val[1]) is str:
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x = True
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y = lambda t: self.pyname2cname[t]
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count = lambda : '0'
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if vid2cname:
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count = lambda : f'{vid2cname[0]}.size'
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val[1] = val[2].eval(x, y, count=count)
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if callable(val[1]):
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val[1] = val[1](False)
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if val[0] == LazyT:
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decltypestring = val[2].eval(x,y,gettype=True)(True)
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decltypestring = f'value_type<decays<decltype({decltypestring})>>'
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out_typenames[key] = decltypestring
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else:
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out_typenames[key] = val[0].cname
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if (type(val[2].udf_called) is udf and # should bulkret also be colref?
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val[2].udf_called.return_pattern == udf.ReturnPattern.elemental_return
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or
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self.group_node and
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(self.group_node.use_sp_gb and
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val[2].cols_mentioned.intersection(
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self.datasource.all_cols().difference(self.group_node.refs))
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) and val[2].is_compound # compound val not in key
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# or
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# val[2].is_compound > 1
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# (not self.group_node and val[2].is_compound)
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):
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out_typenames[key] = f'vector_type<{out_typenames[key]}>'
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self.out_table.columns[key].compound = True
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outtable_col_nameslist = ', '.join([f'"{c.name}"' for c in self.out_table.columns])
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self.outtable_col_names = 'names_' + base62uuid(4)
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self.context.emitc(f'const char* {self.outtable_col_names}[] = {{{outtable_col_nameslist}}};')
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# out_typenames = [v[0].cname for v in proj_map.values()]
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self.context.emitc(f'auto {self.out_table.contextname_cpp} = new TableInfo<{",".join(out_typenames)}>("{self.out_table.table_name}", {self.outtable_col_names});')
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# TODO: Inject custom group by code here and flag them in proj_map
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# Type of UDFs? Complex UDFs, ones with static vars?
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if self.group_node is not None and self.group_node.use_sp_gb:
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gb_vartable : Dict[str, Union[str, int]] = deepcopy(self.pyname2cname)
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gb_cexprs : List[str] = []
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for key, val in proj_map.items():
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col_name = 'col_' + base62uuid(6)
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self.context.emitc(f'decltype(auto) {col_name} = {self.out_table.contextname_cpp}->get_col<{key}>();')
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gb_cexprs.append((col_name, val[2]))
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self.group_node.finalize(gb_cexprs, gb_vartable)
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else:
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for i, (key, val) in enumerate(proj_map.items()):
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if type(val[1]) is int:
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self.context.emitc(
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f'{self.out_table.contextname_cpp}->get_col<{key}>().initfrom({vid2cname[val[1]]}, "{cols[i].name}");'
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)
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else:
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# for funcs evaluate f_i(x, ...)
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self.context.emitc(f'{self.out_table.contextname_cpp}->get_col<{key}>() = {val[1]};')
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# print out col_is
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if 'into' not in node:
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self.context.emitc(f'print(*{self.out_table.contextname_cpp});')
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if self.outfile:
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self.outfile.finalize()
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if 'into' in node:
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self.context.emitc(select_into(self, node['into']).ccode)
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if not self.distinct:
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self.finalize()
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def finalize(self):
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self.context.emitc(f'puts("done.");')
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if self.parent is None:
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self.context.sql_end()
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self.context.postproc_end(self.postproc_fname)
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class select_distinct(projection):
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first_order = 'select_distinct'
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def consume(self, node):
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super().consume(node)
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if self.has_postproc:
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self.context.emitc(
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f'{self.out_table.table_name}->distinct();'
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)
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self.finalize()
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class select_into(ast_node):
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def init(self, node):
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if isinstance(self.parent, projection):
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if self.context.has_dll:
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# has postproc put back to monetdb
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self.produce = self.produce_cpp
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else:
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self.produce = self.produce_sql
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else:
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raise ValueError('parent must be projection')
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def produce_cpp(self, node):
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if not hasattr(self.parent, 'out_table'):
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raise Exception('No out_table found.')
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else:
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self.context.headers.add('"./server/table_ext_monetdb.hpp"')
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self.ccode = f'{self.parent.out_table.contextname_cpp}->monetdb_append_table(cxt->alt_server, \"{node}\");'
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def produce_sql(self, node):
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self.sql = f' INTO {node}'
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class orderby(ast_node):
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name = 'order by'
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def produce(self, node):
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if node is None:
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self.sql = ''
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return
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node = enlist(node)
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o_list = []
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for o in node:
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o_str = expr(self, o['value']).sql
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if 'sort' in o and f'{o["sort"]}'.lower() == 'desc':
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o_str += ' ' + 'DESC'
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o_list.append(o_str)
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self.add(', '.join(o_list))
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class scan(ast_node):
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class Position(Enum):
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init = auto()
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front = auto()
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body = auto()
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back = auto()
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fin = auto()
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# TODO: use this for positions for scanner
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class LoopStyle(Enum):
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forloop = auto()
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foreach = auto()
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name = 'scan'
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def __init__(self, parent: "ast_node", node, loop_style = 'for', context: Context = None, const = False, it_name = None):
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self.it_var = it_name
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self.const = "const " if const else ""
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self.loop_style = loop_style
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super().__init__(parent, node, context)
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def init(self, _):
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self.it_var = self.context.get_scan_var() if not self.it_var else self.it_var
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self.datasource = self.context.datasource
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self.initializers = ''
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self.start = ''
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self.front = ''
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self.body = ''
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self.end = '}'
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self.parent.context.scans.append(self)
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def produce(self, node):
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if self.loop_style == 'for_each':
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self.colref = node
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self.start += f'for ({self.const}auto& {self.it_var} : {node}) {{\n'
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else:
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self.start += f"for (uint32_t {self.it_var} = 0; {self.it_var} < {node}; ++{self.it_var}){{\n"
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def add(self, stmt, position = "body"):
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if position == "body":
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self.body += stmt + '\n'
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elif position == "init":
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self.initializers += stmt + '\n'
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else:
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self.front += stmt + '\n'
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def finalize(self):
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self.context.remove_scan(self, self.initializers + self.start + self.front + self.body + self.end)
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class groupby_c(ast_node):
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name = '_groupby'
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def init(self, node : List[Tuple[expr, Set[ColRef]]]):
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self.proj : projection = self.parent
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self.glist : List[Tuple[expr, Set[ColRef]]] = node
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return super().init(node)
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def produce(self, node : List[Tuple[expr, Set[ColRef]]]):
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self.context.headers.add('"./server/hasher.h"')
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self.context.headers.add('unordered_map')
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self.group = 'g' + base62uuid(7)
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self.group_type = 'record_type' + base62uuid(7)
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self.datasource = self.proj.datasource
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self.scanner = None
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self.datasource.rec = set()
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g_contents = ''
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g_contents_list = []
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first_col = ''
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scanner_itname = self.context.get_scan_var()
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for g in self.glist:
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e = expr(self, g[0].node, c_code=True)
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g_str = e.eval(c_code = True, y = lambda c: self.proj.pyname2cname[c])
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# if v is compound expr, create tmp cols
|
|
if not e.is_ColExpr:
|
|
self.context.headers.add('"./server/aggregations.h"')
|
|
tmpcol = 't' + base62uuid(7)
|
|
self.context.emitc(f'auto {tmpcol} = {g_str};')
|
|
e = tmpcol
|
|
else:
|
|
e = g_str
|
|
g_contents_list.append(e)
|
|
first_col = g_contents_list[0]
|
|
g_contents_decltype = [f'decays<decltype({c})::value_t>' for c in g_contents_list]
|
|
g_contents = ', '.join(
|
|
[f'{c}[{scanner_itname}]' for c in g_contents_list]
|
|
)
|
|
self.context.emitc(f'typedef record<{",".join(g_contents_decltype)}> {self.group_type};')
|
|
self.context.emitc(f'unordered_map<{self.group_type}, vector_type<uint32_t>, '
|
|
f'transTypes<{self.group_type}, hasher>> {self.group};')
|
|
self.n_grps = len(self.glist)
|
|
self.scanner = scan(self, first_col + '.size', it_name=scanner_itname)
|
|
self.scanner.add(f'{self.group}[forward_as_tuple({g_contents})].emplace_back({self.scanner.it_var});')
|
|
|
|
def consume(self, _):
|
|
self.scanner.finalize()
|
|
|
|
# def deal_with_assumptions(self, assumption:assumption, out:TableInfo):
|
|
# gscanner = scan(self, self.group)
|
|
# val_var = 'val_'+base62uuid(7)
|
|
# gscanner.add(f'auto &{val_var} = {gscanner.it_var}.second;')
|
|
# gscanner.add(f'{self.datasource.cxt_name}->order_by<{assumption.result()}>(&{val_var});')
|
|
# gscanner.finalize()
|
|
|
|
def finalize(self, cexprs : List[Tuple[str, expr]], var_table : Dict[str, Union[str, int]]):
|
|
gscanner = scan(self, self.group, loop_style = 'for_each')
|
|
key_var = 'key_'+base62uuid(7)
|
|
val_var = 'val_'+base62uuid(7)
|
|
|
|
gscanner.add(f'auto &{key_var} = {gscanner.it_var}.first;', position = 'front')
|
|
gscanner.add(f'auto &{val_var} = {gscanner.it_var}.second;', position = 'front')
|
|
len_var = None
|
|
def define_len_var():
|
|
nonlocal len_var
|
|
if len_var is None:
|
|
len_var = 'len_'+base62uuid(7)
|
|
gscanner.add(f'auto &{len_var} = {val_var}.size;', position = 'front')
|
|
|
|
def get_key_idx (varname : str):
|
|
for i, g in enumerate(self.glist):
|
|
if varname == g[0].eval():
|
|
return i
|
|
return var_table[varname]
|
|
|
|
def get_var_names (varname : str):
|
|
var = get_key_idx(varname)
|
|
if type(var) is str:
|
|
return f'{var}[{val_var}]'
|
|
else:
|
|
return f'get<{var}>({key_var})'
|
|
|
|
def get_var_names_ex (varex : expr):
|
|
sql_code = varex.eval(c_code = False)
|
|
if (sql_code in var_table):
|
|
return get_var_names(sql_code)
|
|
else:
|
|
return varex.eval(c_code=True, y = get_var_names,
|
|
materialize_builtin = materialize_builtin,
|
|
count=lambda:f'{val_var}.size')
|
|
|
|
for ce in cexprs:
|
|
ex = ce[1]
|
|
materialize_builtin = {}
|
|
if type(ex.udf_called) is udf:
|
|
if '_builtin_len' in ex.udf_called.builtin_used:
|
|
define_len_var()
|
|
materialize_builtin['_builtin_len'] = len_var
|
|
if '_builtin_ret' in ex.udf_called.builtin_used:
|
|
define_len_var()
|
|
gscanner.add(f'{ce[0]}.emplace_back({len_var});\n')
|
|
materialize_builtin['_builtin_ret'] = f'{ce[0]}.back()'
|
|
gscanner.add(f'{ex.eval(c_code = True, y=get_var_names, materialize_builtin = materialize_builtin)};\n')
|
|
continue
|
|
gscanner.add(f'{ce[0]}.emplace_back({get_var_names_ex(ex)});\n')
|
|
|
|
gscanner.finalize()
|
|
|
|
self.datasource.groupinfo = None
|
|
|
|
|
|
class groupby(ast_node):
|
|
name = 'group by'
|
|
|
|
@staticmethod
|
|
def check_special(parent, node):
|
|
node = enlist(node)
|
|
for g in node:
|
|
if ('value' in g and
|
|
expr(parent, g['value']).is_special
|
|
):
|
|
return True
|
|
return False
|
|
|
|
def produce(self, node):
|
|
if not isinstance(self.parent, projection):
|
|
raise ValueError('groupby can only be used in projection')
|
|
|
|
node = enlist(node)
|
|
o_list = []
|
|
self.refs = set()
|
|
self.dedicated_glist : List[Tuple[expr, Set[ColRef]]] = []
|
|
self.use_sp_gb = False
|
|
for g in node:
|
|
self.datasource.rec = set()
|
|
g_expr = expr(self, g['value'])
|
|
self.use_sp_gb = self.use_sp_gb or g_expr.is_special
|
|
refs : Set[ColRef] = self.datasource.rec
|
|
self.datasource.rec = None
|
|
if self.parent.col_ext:
|
|
this_sp_ref = refs.difference(self.parent.col_ext)
|
|
self.use_sp_gb = self.use_sp_gb or len(this_sp_ref) > 0
|
|
self.refs.update(refs)
|
|
self.dedicated_glist.append((g_expr, refs))
|
|
g_str = g_expr.eval(c_code = False)
|
|
if 'sort' in g and f'{g["sort"]}'.lower() == 'desc':
|
|
g_str = g_str + ' ' + 'DESC'
|
|
o_list.append(g_str)
|
|
|
|
if not self.use_sp_gb:
|
|
self.dedicated_gb = None
|
|
self.add(', '.join(o_list))
|
|
else:
|
|
for l in self.dedicated_glist:
|
|
# l_exist = l[1].difference(self.parent.col_ext)
|
|
# for l in l_exist:
|
|
# self.parent.var_table.
|
|
self.parent.col_ext.update(l[1])
|
|
|
|
def finalize(self, cexprs : List[Tuple[str, expr]], var_table : Dict[str, Union[str, int]]):
|
|
if self.use_sp_gb:
|
|
self.dedicated_gb = groupby_c(self.parent, self.dedicated_glist)
|
|
self.dedicated_gb.finalize(cexprs, var_table)
|
|
|
|
class join(ast_node):
|
|
name = 'join'
|
|
|
|
def get_joint_cols(self, cols : List[ColRef]):
|
|
joint_cols = set()
|
|
for col in cols:
|
|
joint_cols |= self.joint_cols[col]
|
|
return joint_cols
|
|
|
|
def init(self, _):
|
|
self.joins : List[join] = []
|
|
self.tables : List[TableInfo] = []
|
|
self.tables_dir = dict()
|
|
self.rec = None
|
|
self.top_level = self.parent and isinstance(self.parent, projection)
|
|
self.have_sep = False
|
|
self.joint_cols : Dict[ColRef, Set]= dict() # columns that are joined with this column
|
|
self.children : Set(join) = {}
|
|
self.join_conditions = []
|
|
# self.tmp_name = 'join_' + base62uuid(4)
|
|
# self.datasource = TableInfo(self.tmp_name, [], self.context)
|
|
|
|
def append(self, tbls, __alias = ''):
|
|
alias = lambda t : t + ' ' + __alias if len(__alias) else t
|
|
if type(tbls) is join:
|
|
self.joins.append((alias(tbls.__str__()), tbls.have_sep))
|
|
self.tables += tbls.tables
|
|
self.tables_dir = {**self.tables_dir, **tbls.tables_dir}
|
|
self.join_conditions += tbls.join_conditions
|
|
|
|
elif type(tbls) is TableInfo:
|
|
self.joins.append((alias(tbls.table_name), False))
|
|
self.tables.append(tbls)
|
|
self.tables_dir[tbls.table_name] = tbls
|
|
for a in tbls.alias:
|
|
self.tables_dir[a] = tbls
|
|
|
|
elif type(tbls) is projection:
|
|
self.joins.append((alias(tbls.finalize()), False))
|
|
|
|
def produce(self, node):
|
|
if type(node) is list:
|
|
for d in node:
|
|
self.append(join(self, d))
|
|
|
|
elif type(node) is dict:
|
|
alias = ''
|
|
if 'value' in node:
|
|
table_name = node['value']
|
|
tbl = None
|
|
if 'name' in node:
|
|
alias = node['name']
|
|
if type(table_name) is dict:
|
|
if 'select' in table_name:
|
|
# TODO: subquery, create and register TableInfo in projection
|
|
tbl = projection(self, table_name).finalize()
|
|
else:
|
|
tbl = self.context.tables_byname[table_name]
|
|
if 'name' in node:
|
|
tbl.add_alias(node['name'])
|
|
self.append(tbl, alias)
|
|
else:
|
|
keys = list(node.keys())
|
|
if keys[0].lower().endswith('join'):
|
|
self.have_sep = True
|
|
j = join(self, node[keys[0]])
|
|
self.join_conditions += j.join_conditions
|
|
tablename = f' {keys[0]} {j}'
|
|
if len(keys) > 1 :
|
|
_ex = expr(self, node[keys[1]])
|
|
if keys[1].lower() == 'on':
|
|
self.join_conditions += _ex.join_conditions
|
|
tablename += f' ON {_ex}'
|
|
elif keys[1].lower() == 'using':
|
|
if _ex.is_ColExpr:
|
|
self.join_conditions += (_ex.raw_col, j.get_cols(_ex.raw_col.name))
|
|
tablename += f' USING {_ex}'
|
|
self.joins.append((tablename, self.have_sep))
|
|
self.tables += j.tables
|
|
self.tables_dir = {**self.tables_dir, **j.tables_dir}
|
|
|
|
elif type(node) is str:
|
|
if node in self.context.tables_byname:
|
|
self.append(self.context.tables_byname[node])
|
|
else:
|
|
print(f'Error: table {node} not found.')
|
|
|
|
def get_cols(self, colExpr: str) -> ColRef:
|
|
for t in self.tables:
|
|
if colExpr in t.columns_byname:
|
|
col = t.columns_byname[colExpr]
|
|
if type(self.rec) is set:
|
|
self.rec.add(col)
|
|
return col
|
|
|
|
def parse_col_names(self, colExpr:str) -> ColRef:
|
|
parsedColExpr = colExpr.split('.')
|
|
if len(parsedColExpr) <= 1:
|
|
return self.get_cols(colExpr)
|
|
else:
|
|
datasource = self.tables_dir[parsedColExpr[0]]
|
|
if datasource is None:
|
|
raise ValueError(f'Table name/alias not defined{parsedColExpr[0]}')
|
|
else:
|
|
datasource.rec = self.rec
|
|
ret = datasource.parse_col_names(parsedColExpr[1])
|
|
datasource.rec = None
|
|
return ret
|
|
|
|
# @property
|
|
def all_cols(self):
|
|
ret = set()
|
|
for table in self.tables:
|
|
rec = table.rec
|
|
table.rec = self.rec
|
|
ret.update(table.all_cols())
|
|
table.rec = rec
|
|
return ret
|
|
|
|
# TODO: join condition awareness
|
|
def process_join_conditions(self):
|
|
# This is done after both from
|
|
# and where clause are processed
|
|
print(self.join_conditions)
|
|
|
|
def consume(self, node):
|
|
self.sql = ''
|
|
for j in self.joins:
|
|
if not self.sql or j[1]:
|
|
self.sql += j[0] # using JOIN keyword
|
|
else:
|
|
self.sql += ', ' + j[0] # using comma
|
|
|
|
if node and self.sql and self.top_level:
|
|
self.sql = ' FROM ' + self.sql
|
|
return super().consume(node)
|
|
|
|
def __str__(self):
|
|
return self.sql
|
|
def __repr__(self):
|
|
return self.__str__()
|
|
|
|
|
|
class filter(ast_node):
|
|
name = 'where'
|
|
def produce(self, node):
|
|
filter_expr = expr(self, node)
|
|
self.add(filter_expr.sql)
|
|
self.datasource.join_conditions += filter_expr.join_conditions
|
|
|
|
class create_table(ast_node):
|
|
name = 'create_table'
|
|
first_order = name
|
|
def init(self, node):
|
|
node = node[self.name]
|
|
if 'query' in node:
|
|
if 'name' not in node:
|
|
raise ValueError("Table name not specified")
|
|
projection_node = node['query']
|
|
projection_node['into'] = node['name']
|
|
projection(None, projection_node, self.context)
|
|
self.produce = lambda *_: None
|
|
self.spawn = lambda *_: None
|
|
self.consume = lambda *_: None
|
|
return
|
|
if self.parent is None:
|
|
self.context.sql_begin()
|
|
self.sql = 'CREATE TABLE '
|
|
|
|
def produce(self, node):
|
|
ct = node[self.name]
|
|
tbl = self.context.add_table(ct['name'], ct['columns'])
|
|
self.sql = f'CREATE TABLE {tbl.table_name}('
|
|
columns = []
|
|
for c in tbl.columns:
|
|
columns.append(f'{c.name} {c.type.sqlname}')
|
|
self.sql += ', '.join(columns)
|
|
self.sql += ')'
|
|
if self.context.use_columnstore:
|
|
self.sql += ' engine=ColumnStore'
|
|
|
|
class drop(ast_node):
|
|
name = 'drop'
|
|
first_order = name
|
|
def produce(self, node):
|
|
node = node['drop']
|
|
tbl_name = node['table']
|
|
if tbl_name in self.context.tables_byname:
|
|
tbl_obj = self.context.tables_byname[tbl_name]
|
|
# TODO: delete in postproc engine
|
|
self.context.tables_byname.pop(tbl_name)
|
|
self.context.tables.remove(tbl_obj)
|
|
self.sql += 'TABLE IF EXISTS ' + tbl_name
|
|
return
|
|
elif 'if_exists' not in node or not node['if_exists']:
|
|
print(f'Error: table {tbl_name} not found.')
|
|
self.sql = ''
|
|
|
|
class insert(ast_node):
|
|
name = 'insert'
|
|
first_order = name
|
|
def init(self, node):
|
|
values = node['query']
|
|
complex_query_kw = ['from', 'where', 'groupby', 'having', 'orderby', 'limit']
|
|
if any([kw in values for kw in complex_query_kw]):
|
|
values['into'] = node['insert']
|
|
projection(None, values, self.context)
|
|
self.produce = lambda*_:None
|
|
self.spawn = lambda*_:None
|
|
self.consume = lambda*_:None
|
|
else:
|
|
super().init(node)
|
|
|
|
def produce(self, node):
|
|
values = node['query']['select']
|
|
tbl = node['insert']
|
|
self.sql = f'INSERT INTO {tbl} VALUES('
|
|
# if len(values) != table.n_cols:
|
|
# raise ValueError("Column Mismatch")
|
|
|
|
list_values = []
|
|
for i, s in enumerate(values):
|
|
if 'value' in s:
|
|
list_values.append(f"{s['value']}")
|
|
else:
|
|
# subquery, dispatch to select astnode
|
|
pass
|
|
self.sql += ', '.join(list_values) + ')'
|
|
|
|
|
|
class load(ast_node):
|
|
name="load"
|
|
first_order = name
|
|
def init(self, node):
|
|
self.module = False
|
|
if node['load']['file_type'] == 'module':
|
|
self.produce = self.produce_module
|
|
self.module = True
|
|
elif self.context.dialect == 'MonetDB':
|
|
self.produce = self.produce_monetdb
|
|
else:
|
|
self.produce = self.produce_aq
|
|
if self.parent is None:
|
|
self.context.sql_begin()
|
|
|
|
def produce_module(self, node):
|
|
# create command for exec engine -> done
|
|
# create c++ stub
|
|
# create dummy udf obj for parsing
|
|
# def decode_type(ty : str) -> str:
|
|
# ret = ''
|
|
# back = ''
|
|
# while(ty.startswith('vec')):
|
|
# ret += 'ColRef<'
|
|
# back += '>'
|
|
# ty = ty[3:]
|
|
# ret += ty
|
|
# return ret + back
|
|
node = node['load']
|
|
file = node['file']['literal']
|
|
self.context.queries.append(f'M{file}')
|
|
self.module_name = file
|
|
self.functions = {}
|
|
if 'funcs' in node:
|
|
for f in enlist(node['funcs']):
|
|
fname = f['fname']
|
|
self.context.queries.append(f'F{fname}')
|
|
ret_type = VoidT
|
|
if 'ret_type' in f:
|
|
ret_type = Types.decode(f['ret_type'])
|
|
nargs = 0
|
|
arglist = ''
|
|
if 'vars' in f:
|
|
arglist = []
|
|
for v in enlist(f['vars']):
|
|
arglist.append(f'{Types.decode(v["type"]).cname} {v["arg"]}')
|
|
nargs = len(arglist)
|
|
arglist = ', '.join(arglist)
|
|
# create c++ stub
|
|
cpp_stub = f'{ret_type.cname} (*{fname})({arglist}) = nullptr;'
|
|
self.context.module_stubs += cpp_stub + '\n'
|
|
self.context.module_map[fname] = cpp_stub
|
|
#registration for parser
|
|
self.functions[fname] = user_module_function(fname, nargs, ret_type, self.context)
|
|
self.context.module_init_loc = len(self.context.queries)
|
|
|
|
def produce_aq(self, node):
|
|
node = node['load']
|
|
s1 = 'LOAD DATA INFILE '
|
|
s2 = 'INTO TABLE '
|
|
s3 = 'FIELDS TERMINATED BY '
|
|
self.sql = f'{s1} \"{node["file"]["literal"]}\" {s2} {node["table"]}'
|
|
if 'term' in node:
|
|
self.sql += f' {s3} \"{node["term"]["literal"]}\"'
|
|
|
|
def produce_monetdb(self, node):
|
|
node = node['load']
|
|
s1 = f'COPY OFFSET 2 INTO {node["table"]} FROM '
|
|
s2 = ' ON SERVER '
|
|
s3 = ' USING DELIMITERS '
|
|
import os
|
|
p = os.path.abspath(node['file']['literal']).replace('\\', '/')
|
|
|
|
self.sql = f'{s1} \'{p}\' {s2} '
|
|
if 'term' in node:
|
|
self.sql += f' {s3} \'{node["term"]["literal"]}\''
|
|
|
|
class outfile(ast_node):
|
|
name="_outfile"
|
|
def __init__(self, parent, node, context = None, *, sql = None):
|
|
self.node = node
|
|
super().__init__(parent, node, context)
|
|
self.sql = sql if sql else ''
|
|
|
|
def init(self, _):
|
|
assert(isinstance(self.parent, projection))
|
|
if not self.parent.has_postproc:
|
|
if self.context.dialect == 'MonetDB':
|
|
self.produce = self.produce_monetdb
|
|
else:
|
|
self.produce = self.produce_aq
|
|
|
|
return super().init(_)
|
|
def produce_aq(self, node):
|
|
filename = node['loc']['literal'] if 'loc' in node else node['literal']
|
|
self.sql += f'INTO OUTFILE "{filename}"'
|
|
if 'term' in node:
|
|
self.sql += f' FIELDS TERMINATED BY \"{node["term"]["literal"]}\"'
|
|
|
|
def produce_monetdb(self, node):
|
|
filename = node['loc']['literal'] if 'loc' in node else node['literal']
|
|
import os
|
|
p = os.path.abspath('.').replace('\\', '/') + '/' + filename
|
|
self.sql = f'COPY {self.sql} INTO "{p}"'
|
|
d = '\t'
|
|
e = '\n'
|
|
if 'term' in node:
|
|
d = node['term']['literal']
|
|
self.sql += f' delimiters \'{d}\', \'{e}\''
|
|
|
|
def finalize(self):
|
|
filename = self.node['loc']['literal'] if 'loc' in self.node else self.node['literal']
|
|
sep = ',' if 'term' not in self.node else self.node['term']['literal']
|
|
file_pointer = 'fp_' + base62uuid(6)
|
|
self.addc(f'FILE* {file_pointer} = fopen("{filename}", "w");')
|
|
self.addc(f'{self.parent.out_table.contextname_cpp}->printall("{sep}", "\\n", nullptr, {file_pointer});')
|
|
self.addc(f'fclose({file_pointer});')
|
|
self.context.ccode += self.ccode
|
|
|
|
class udf(ast_node):
|
|
name = 'udf'
|
|
first_order = name
|
|
@staticmethod
|
|
def try_init_udf(context : Context):
|
|
if context.udf is None:
|
|
context.udf = '/*UDF Start*/\n'
|
|
context.headers.add('\"./udf.hpp\"')
|
|
|
|
@dataclass
|
|
class builtin_var:
|
|
enabled : bool = False
|
|
_type : Types = AnyT
|
|
all = ('_builtin_len', '_builtin_ret')
|
|
|
|
def decltypecall(self, c_code = False, *args):
|
|
from engine.types import fn_behavior
|
|
class dummy:
|
|
def __init__(self, name):
|
|
self.cname = name + '_gettype'
|
|
self.sqlname = self.cname
|
|
return fn_behavior(dummy(self.cname), c_code, *args)
|
|
|
|
def __call__(self, c_code = False, *args):
|
|
from engine.types import fn_behavior
|
|
builtin_args = [f'{{{n}()}}' for n, v in self.builtin.items() if v.enabled]
|
|
return fn_behavior(self, c_code, *args, *builtin_args)
|
|
|
|
def return_type(self, *_ : Types):
|
|
return LazyT
|
|
|
|
def init(self, _):
|
|
self.builtin : Dict[str, udf.builtin_var] = {
|
|
'_builtin_len' : udf.builtin_var(False, UIntT),
|
|
'_builtin_ret' : udf.builtin_var(False, Types(
|
|
255, name = 'generic_ref', cname = 'auto&'
|
|
))
|
|
}
|
|
self.var_table = {}
|
|
self.args = []
|
|
udf.try_init_udf(self.context)
|
|
self.vecs = set()
|
|
self.code_list = []
|
|
self.builtin_used = None
|
|
|
|
def add(self, *code):
|
|
ccode = ''
|
|
for c in code:
|
|
if type(c) is str:
|
|
ccode += c
|
|
else:
|
|
self.code_list.append(ccode)
|
|
self.code_list.append(c)
|
|
ccode = ''
|
|
if ccode:
|
|
self.code_list.append(ccode)
|
|
|
|
|
|
def produce(self, node):
|
|
from engine.utils import get_legal_name, check_legal_name
|
|
node = node[self.name]
|
|
# register udf
|
|
self.agg = 'Agg' in node
|
|
self.cname = get_legal_name(node['fname'])
|
|
self.sqlname = self.cname
|
|
self.context.udf_map[self.cname] = self
|
|
if self.agg:
|
|
self.context.udf_agg_map[self.cname] = self
|
|
self.add(f'auto {self.cname} = [](')
|
|
|
|
def get_block(self, ind, node):
|
|
if 'stmt' in node:
|
|
old_ind = ind
|
|
ind += '\t'
|
|
next_stmt = enlist(node['stmt'])
|
|
if len(next_stmt) > 1:
|
|
self.add(f' {{\n')
|
|
self.get_stmt(ind ,next_stmt)
|
|
self.add(f'{old_ind}}}\n')
|
|
else:
|
|
self.get_stmt(ind, next_stmt)
|
|
|
|
def get_cname(self, x:str):
|
|
return self.var_table[x]
|
|
|
|
def get_assignment(self, ind, node, *, types = 'auto', sep = ';\n'):
|
|
var_ex = expr(self, node['var'], c_code=True, supress_undefined = True)
|
|
ex = expr(self, node['expr'], c_code=True)
|
|
var = var_ex.eval(y=self.get_cname)
|
|
if var in self.var_table or hasattr(var_ex, 'builtin_var'):
|
|
op = '='
|
|
if 'op' in node and node['op'] != ':=':
|
|
op = node['op']
|
|
e = ex.eval(y=self.get_cname)
|
|
def assign_behavior(decltypestr = False):
|
|
nonlocal ind, var, op, e, sep
|
|
v = var(decltypestr) if callable(var) else var
|
|
_e = e(decltypestr) if callable(e) else e
|
|
if v == '_builtin_ret':
|
|
return f'{ind}return {_e}{sep}'
|
|
elif '_builtin_ret' not in _e:
|
|
return f'{ind}{v} {op} {_e}{sep}'
|
|
else:
|
|
return ''
|
|
self.add(assign_behavior)
|
|
else:
|
|
cvar = get_legal_name(var)
|
|
self.var_table[var] = cvar
|
|
self.add(f'{ind}{types} {cvar} = ', ex.eval(y=self.get_cname), sep)
|
|
|
|
def get_stmt(self, ind, node):
|
|
node = enlist(node)
|
|
for n in node:
|
|
if 'if' in n:
|
|
_ifnode = n['if']
|
|
self.add(f'{ind}if(', expr(self, _ifnode["cond"]).eval(y=self.get_cname), ')')
|
|
if 'stmt' in _ifnode:
|
|
self.get_block(ind, _ifnode)
|
|
else:
|
|
self.add('\n')
|
|
self.get_stmt(ind + '\t', _ifnode)
|
|
if 'elif' in _ifnode:
|
|
for e in n['elif']:
|
|
self.add(f'{ind}else if(', expr(self, e["cond"]).eval(y=self.get_cname), ')')
|
|
self.get_block(ind, e)
|
|
if 'else' in _ifnode:
|
|
self.add(f'{ind}else ')
|
|
self.get_block(ind, _ifnode['else'])
|
|
|
|
elif 'for' in n:
|
|
_fornode = n['for']
|
|
defs = _fornode['defs']
|
|
self.add(f'{ind}for({"auto " if len(enlist(defs["op"])) != 0 else ";"}')
|
|
def get_inline_assignments(node, end = '; '):
|
|
var = enlist(node['var'])
|
|
op = enlist(node['op'])
|
|
expr = enlist(node['expr'])
|
|
len_node = len(enlist(op))
|
|
for i, (v, o, e) in enumerate(zip(var, op, expr)):
|
|
self.get_assignment('', {'var' : v, 'op' : o, 'expr' : e}, types = '', sep = ', ' if i != len_node - 1 else end)
|
|
get_inline_assignments(defs)
|
|
self.add(expr(self, _fornode["cond"]).eval(y=self.get_cname), '; ')
|
|
get_inline_assignments(_fornode['tail'], ') ')
|
|
if 'stmt' in _fornode:
|
|
self.get_block(ind, _fornode)
|
|
else:
|
|
self.add('\n')
|
|
self.get_stmt(ind + '\t', _fornode)
|
|
elif 'assignment' in n:
|
|
assign = n['assignment']
|
|
self.get_assignment(ind, assign)
|
|
|
|
|
|
def consume(self, node):
|
|
from engine.utils import get_legal_name, check_legal_name
|
|
node = node[self.name]
|
|
|
|
if 'params' in node:
|
|
for args in node['params']:
|
|
cname = get_legal_name(args)
|
|
self.var_table[args] = cname
|
|
self.args.append(cname)
|
|
front = [*self.code_list, ', '.join([f'const auto& {a}' for a in self.args])]
|
|
self.code_list = []
|
|
|
|
self.with_storage = False
|
|
self.with_statics = False
|
|
self.static_decl : Optional[List[str]] = None
|
|
ind = '\t'
|
|
if 'static_decl' in node:
|
|
self.add(') {\n')
|
|
curr = node['static_decl']
|
|
self.with_statics = True
|
|
if 'var' in curr and 'expr' in curr:
|
|
if len(curr['var']) != len(curr['expr']):
|
|
print("Error: every static variable must be initialized.")
|
|
self.static_decl = []
|
|
for v, e in zip(curr['var'], curr['expr']):
|
|
cname = get_legal_name(v)
|
|
self.var_table[v] = cname
|
|
self.static_decl.append(f'{cname} = ', expr(self, e, c_code=True).eval(self.get_cname))
|
|
self.add(f'{ind}static auto {"; static auto ".join(self.static_decl)};\n')
|
|
self.add(f'{ind}auto reset = [=]() {{ {"; ".join(self.static_decl)}; }};\n')
|
|
self.add(f'{ind}auto call = []({", ".join([f"decltype({a}) {a}" for a in self.args])}')
|
|
ind = '\t\t'
|
|
front = [*front, *self.code_list]
|
|
self.code_list = []
|
|
if 'stmt' in node:
|
|
self.get_stmt(ind, node['stmt'])
|
|
# first scan to determine vec types
|
|
# if self.agg:
|
|
# for assign in node['assignment']:
|
|
# var = fastscan(assign['var'])
|
|
# ex = fastscan(assign['expr'])
|
|
# self.vecs.union(var.vec_vars)
|
|
# self.vecs.union(var.requested_lens)
|
|
# self.vecs.union(ex.vec_vars)
|
|
# self.vecs.union(ex.requested_lens)
|
|
# if len(self.vecs) != 0:
|
|
# self.idx_var = 'idx_' + base62uuid(5)
|
|
# self.ccode += f'{ind}auto {self.idx_var} = 0;\n'
|
|
|
|
ret = node['ret']
|
|
def return_call(decltypestr = False):
|
|
if (decltypestr):
|
|
return ''
|
|
ret = ''
|
|
for r in self.return_call:
|
|
if callable(r):
|
|
ret += r(False)
|
|
else:
|
|
ret += r
|
|
return ret
|
|
self.return_call = (f'{ind}return ', expr(self, ret, c_code=True).eval(self.get_cname), ';\n')
|
|
self.add(return_call)
|
|
if self.with_statics:
|
|
self.add('\t};\n')
|
|
self.add('\treturn std::make_pair(reset, call);\n')
|
|
self.add('};\n')
|
|
|
|
#print(self.ccode)
|
|
self.builtin_args = [(name, var._type.cname) for name, var in self.builtin.items() if var.enabled]
|
|
# self.context.udf += front + builtin_argstr + self.ccode + '\n'
|
|
self.finalize(front)
|
|
|
|
def finalize(self, front):
|
|
builtin_argstr = ', ' if len(self.builtin_args) and len(self.args) else ''
|
|
builtin_argstr += ', '.join([f'{t} {n}' for (n, t) in self.builtin_args])
|
|
self.builtin_used = [b for b, v in self.builtin.items() if v.enabled]
|
|
ccode = ''
|
|
def process_recursion(l, decltypestr = False):
|
|
nonlocal ccode
|
|
for c in l:
|
|
if type(c) is str:
|
|
ccode += c
|
|
elif callable(c):
|
|
ccode += c(decltypestr) # a callback function
|
|
else:
|
|
raise ValueError(f'Illegal operation in udf code generation: {c}')
|
|
process_recursion(front)
|
|
ccode += builtin_argstr + ') {\n'
|
|
process_recursion(self.code_list)
|
|
self.context.udf += ccode + '\n'
|
|
ccode = ''
|
|
if self.return_pattern == udf.ReturnPattern.elemental_return:
|
|
ccode += f'auto {self.cname}_gettype = []('
|
|
process_recursion(front[1:], True)
|
|
ccode += ') {\n\tuint32_t _builtin_len = 0;\n'
|
|
process_recursion(self.code_list, True)
|
|
self.context.udf += ccode + '\n'
|
|
|
|
class ReturnPattern(Enum):
|
|
bulk_return = auto()
|
|
elemental_return = auto()
|
|
|
|
@property
|
|
def return_pattern(self):
|
|
if '_builtin_ret' in self.builtin_used:
|
|
return udf.ReturnPattern.elemental_return
|
|
else:
|
|
return udf.ReturnPattern.bulk_return
|
|
|
|
class user_module_function(OperatorBase):
|
|
def __init__(self, name, nargs, ret_type, context : Context):
|
|
super().__init__(name, nargs, lambda *_: ret_type, call=fn_behavior)
|
|
user_module_func[name] = self
|
|
# builtin_operators[name] = self
|
|
udf.try_init_udf(context)
|
|
|
|
def include(objs):
|
|
import inspect
|
|
for _, cls in inspect.getmembers(objs):
|
|
if inspect.isclass(cls) and issubclass(cls, ast_node) and type(cls.first_order) is str:
|
|
ast_node.types[cls.first_order] = cls
|
|
|
|
|
|
import sys
|
|
include(sys.modules[__name__])
|