/
syntax.py
249 lines (206 loc) · 5.44 KB
/
syntax.py
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from semantics import Node
#Complete program
def p_program(p):
'''program : functions MODEL LCURLY vars data model statementblock RCURLY'''
p[0] = Node('program', p[1], p[4], p[5], p[6], p[7])
#Functions
def p_functions(p):
'''functions : function functions
| empty'''
if len(p) > 2: p[0] = Node('functions', p[1], p[2])
else : p[0] = p[1]
def p_function(p):
'''function : FUNC ID LPAREN lparameters RPAREN LCURLY vars data statementblock RCURLY'''
p[0] = Node('function', p[4], p[7], p[8], p[9])
def p_lparameters(p):
'''lparameters : parameter
| parameter parameters
| empty'''
if len(p) > 2 : p[0] = Node('lparameters', p[1], p[2])
else : p[0] = p[1]
def p_parameters(p):
'''parameters : COMMA parameters
| empty'''
if len(p) > 2 : p[0] = Node('parameters', p[2])
else : p[0] = Node('parameters', p[1])
def p_parameter(p):
'''parameter : vartype ID'''
p[0] = Node('parameter', p[1], p[2])
#Variable declaration
def p_vars(p):
'''vars : varblock
| empty'''
p[0] = Node('vars', p[1])
def p_varblock(p):
'varblock : VARS LCURLY lvars RCURLY'
p[0]= Node('varblock', p[3])
def p_lvars(p):
'''lvars : listofvars lvars
| listofvars
| empty'''
if len(p) > 2 : p[0] = Node('lvars', p[1], p[2])
else: p[0] = p[1]
def p_listofvars(p):
'''listofvars : typedeclaration POINTS listofids SEMIC'''
p[0]= Node('listofvars', p[1], p[3])
#Declaration of types
def p_typedeclaration(p):
'''typedeclaration : vartype dimensions'''
p[0] = Node('typedeclaration', p[1], p[2])
def p_dimensions(p):
'''dimensions : LBRACKET expresion RBRACKET dimensions
| empty'''
if len(p) > 2 : p[0] = Node('dimensions', p[1], p[3])
else : p[0] = p[1]
def p_listofids(p):
'''listofids : ID lid'''
p[0] = Node('listofids', p[1], p[2])
def p_lid(p):
'''lid : COMMA listofids
| empty'''
if len(p) > 2 : p[0] = p[2]
else : p[0] = p[1]
#Data
def p_data(p):
'''data : DATA LCURLY asignmany RCURLY'''
p[0] = Node('data', p[3])
def p_asignmany(p):
'''asignmany : asign asignmany
| empty'''
if len(p) > 2 : p[0] = Node('asignmany', p[1], p[2])
else : p[0] = p[1]
def p_asign(p):
'asign : ID EQUALS expresiones SEMIC'
p[0] = Node('asign', p[1], p[3])
def p_expresiones(p):
'''expresiones : expresion COMMA expresiones
| expresion'''
if len(p) > 2 : p[0] = Node ('expresiones', p[1], p[3])
else : p[0] = p[1]
#Expresions
def p_expresion(p):
'''expresion : exp
| exp LESSTHAN exp
| exp LESSEQUAL exp
| exp GREATEREQUAL exp
| exp GREATERTHAN exp
| exp BETWEEN exp'''
if len(p) > 2 :
p[0] = Node('expresion', p[1], p[2], p[3])
else : p[0] = p[1]
def p_exp(p):
'''exp : term
| term PLUS exp
| term MINUS exp'''
if len(p) > 2 : p[0]= Node('expresion', p[1], p[2], p[3])
else: p[0]= p[1]
def p_term(p):
'''term : factor
| factor STAR term
| factor SLASH term'''
if len(p) > 2 :
p[0] = Node('expresion', p[1], p[2], p[3])
else : p[0] = p[1]
def p_factor(p):
'''factor : PLUS constant
| MINUS constant
| constant
| ID
| LPAREN expresion RPAREN'''
if len(p) == 4 : p[0]= Node('expresion', p[1], p[2], p[3])
else:
if len(p) == 3 : p[0] = Node('expresion', p[1], p[2])
else: p[0]= p[1]
#Model
def p_model(p):
'''model : optimize
| optimize where
| statementblock
| empty'''
p[0] = Node('model', p[1])
def p_optimize(p):
'''optimize : MIN LCURLY statement where RCURLY
| MAX LCURLY statement where RCURLY'''
p[0] = Node('optimize', p[3], p[4])
#Statements
def p_statement(p):
'''statement : asign
| expresion
| condition
| write
| optimize
| for
| return
| build
| wherecondition'''
p[0] = Node('statement', p[1])
def p_build(p):
'''build : BUILD expresion SEMIC'''
p[0] = Node('build', p[1])
def p_where(p):
'''where : WHERE LCURLY statementblock RCURLY'''
p[0] = Node('where', p[3])
def p_wherecondition(p):
'''wherecondition : CONDITION expresion SEMIC'''
p[0] = Node('where', p[2])
#Tokens
def p_vartype(p):
'''vartype : TINT
| TFLOAT
| TBOOL'''
p[0] = Node('vartype', p[1])
def p_constant(p):
'''constant : CTEI
| CTEF
| CTESTRING
| CTEBOOL
| id
| functioncall'''
p[0] = p[1]
def p_id(p):
'''id : ID dimensions'''
p[0] = p[1]
######
def p_functioncall(p):
'''functioncall : ID LPAREN expresion RPAREN
| ID LPAREN CTEI RPAREN
| ID LPAREN CTEF RPAREN'''
p[0] = Node('functioncall', p[3])
def p_for(p):
'''for : FOR ID IN DOT ID LCURLY statementblock RCURLY'''
p[0] = Node('for', p[7])
def p_condition(p):
'''condition : IF LPAREN expresion RPAREN statementblock SEMIC
| IF LPAREN expresion RPAREN statementblock ELSE statementblock SEMIC'''
if len(p) > 8 : p[0] = Node('condition', p[1], p[2], p[3], p[4], p[5], p[7], p[8])
else : p[0] = Node('condition', p[1], p[2], p[3], p[4], p[5], p[6])
def p_write(p):
'''write : PRINT LPAREN write2 RPAREN SEMIC'''
p[0] = Node('write', p[3])
def p_write2(p):
'''write2 : expresion
| CTESTRING
| expresion DOT write2
| CTESTRING DOT write2'''
if len(p) > 2 : p[0] = Node('write2', p[1], p[3])
else : p[0] = Node('write2', p[1])
def p_return(p):
'''return : RETURN asign'''
p[0] = Node('return', p[2])
def p_statementblock(p):
'''statementblock : statement statementblock
| statement
| empty'''
if len(p) > 2 :
p[0] = (p[2])
else : p[0]= (p[1])
def p_empty(p):
'empty :'
pass
def p_error(t):
if t is None :
print "Syntax error"
else :
print "Syntax error:"
print t
start = 'program'