lcfOS: python/ppci/c3/parser.py annotate

annotate python/ppci/c3/parser.py @ 354:5477e499b039

Added some sort of string functionality

author	Windel Bouwman
date	Thu, 13 Mar 2014 18:59:06 +0100
parents	d1ecc493384e
children	c05ab629976a

rev	line source
254 bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	1 import logging
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	2 from .. import CompilerError
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	3 from .astnodes import Member, Literal, TypeCast, Unop, Binop
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	4 from .astnodes import Assignment, ExpressionStatement, Compound
315 084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	5 from .astnodes import Return, While, If, Empty, For
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	6 from .astnodes import FunctionType, Function, FormalParameter
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	7 from .astnodes import StructureType, DefinedType, PointerType, ArrayType
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	8 from .astnodes import Constant, Variable
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	9 from .astnodes import StructField, Deref, Index
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	10 from .astnodes import Package
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	11 from .astnodes import Identifier
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	12 from .astnodes import FunctionCall
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	13
288 a747a45dcd78 Various styling work Windel Bouwman parents: 284 diff changeset	14
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	15 class Parser:
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	16 """ Parses sourcecode into an abstract syntax tree (AST) """
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	17 def __init__(self, diag):
254 bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	18 self.logger = logging.getLogger('c3')
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	19 self.diag = diag
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	20
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	21 def parseSource(self, tokens):
334 6f4753202b9a Added more recipes Windel Bouwman parents: 315 diff changeset	22 self.logger.debug('Parsing source')
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	23 self.tokens = tokens
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	24 self.token = self.tokens.__next__()
254 bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	25 try:
bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	26 self.parsePackage()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	27 self.mod.ok = True # Valid until proven wrong :)
254 bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	28 return self.mod
bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	29 except CompilerError as e:
bd26dc13f270 Added logger Windel Bouwman parents: 251 diff changeset	30 self.diag.addDiag(e)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	31
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	32 def Error(self, msg):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	33 raise CompilerError(msg, self.token.loc)
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	34
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	35 # Lexer helpers:
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	36 def Consume(self, typ):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	37 if self.Peak == typ:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	38 return self.NextToken()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	39 else:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	40 self.Error('Excected: "{0}", got "{1}"'.format(typ, self.Peak))
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	41
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	42 @property
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	43 def Peak(self):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	44 return self.token.typ
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	45
228 7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	46 @property
7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	47 def CurLoc(self):
7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	48 return self.token.loc
7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	49
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	50 def hasConsumed(self, typ):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	51 if self.Peak == typ:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	52 self.Consume(typ)
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	53 return True
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	54 return False
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	55
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	56 def NextToken(self):
219 1fa3e0050b49 Expanded ad hoc code generator Windel Bouwman parents: 215 diff changeset	57 t = self.token
1fa3e0050b49 Expanded ad hoc code generator Windel Bouwman parents: 215 diff changeset	58 if t.typ != 'END':
1fa3e0050b49 Expanded ad hoc code generator Windel Bouwman parents: 215 diff changeset	59 self.token = self.tokens.__next__()
1fa3e0050b49 Expanded ad hoc code generator Windel Bouwman parents: 215 diff changeset	60 return t
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	61
215 c1ccb1cb4cef Major changes in c3 frontend Windel Bouwman parents: 213 diff changeset	62 def addDeclaration(self, decl):
336 d1ecc493384e Added spiffy armtoken class for bit fiddeling. Added cool test that checks for build repeatability Windel Bouwman parents: 334 diff changeset	63 self.currentPart.add_declaration(decl)
288 a747a45dcd78 Various styling work Windel Bouwman parents: 284 diff changeset	64
251 6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	65 def parseImport(self):
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	66 self.Consume('import')
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	67 name = self.Consume('ID').val
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	68 self.mod.imports.append(name)
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	69 self.Consume(';')
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	70
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	71 def parsePackage(self):
284 05184b95fa16 Moved tests to seperate folder Windel Bouwman parents: 280 diff changeset	72 self.Consume('module')
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	73 name = self.Consume('ID')
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	74 self.Consume(';')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	75 self.mod = Package(name.val, name.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	76 self.currentPart = self.mod
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	77 while self.Peak != 'END':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	78 self.parseTopLevel()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	79 self.Consume('END')
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	80
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	81 def parseTopLevel(self):
251 6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	82 if self.Peak == 'function':
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	83 self.parseFunctionDef()
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	84 elif self.Peak == 'var':
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	85 self.parseVarDef()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	86 # TODO handle variable initialization
251 6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	87 elif self.Peak == 'const':
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	88 self.parseConstDef()
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	89 elif self.Peak == 'type':
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	90 self.parseTypeDef()
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	91 elif self.Peak == 'import':
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	92 self.parseImport()
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	93 else:
6ed3d3a82a63 Added another c3 example. First import attempt Windel Bouwman parents: 232 diff changeset	94 self.Error('Expected function, var, const or type')
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	95
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	96 def parseDesignator(self):
301 6753763d3bec merge codegen into ppci package Windel Bouwman parents: 300 diff changeset	97 """ A designator designates an object with a name. """
225 1c7364bd74c7 Fixed pointer deref Windel Bouwman parents: 222 diff changeset	98 name = self.Consume('ID')
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	99 return Identifier(name.val, name.loc)
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	100
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	101 def parseIdSequence(self):
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	102 ids = [self.Consume('ID')]
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	103 while self.hasConsumed(','):
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	104 ids.append(self.Consume('ID'))
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	105 return ids
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	106
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	107 # Type system
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	108 def PostFixId(self):
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	109 pfe = self.PrimaryExpression_Id()
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	110 while self.Peak in ['.']:
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	111 if self.hasConsumed('.'):
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	112 field = self.Consume('ID')
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	113 pfe = Member(pfe, field.val, field.loc)
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	114 else:
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	115 raise Exception()
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	116 return pfe
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	117
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	118 def PrimaryExpression_Id(self):
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	119 if self.Peak == 'ID':
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	120 return self.parseDesignator()
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	121 self.Error('Expected ID, got {0}'.format(self.Peak))
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	122
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	123 def parse_type_spec(self):
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	124 """ Parse type specification """
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	125 if self.Peak == 'struct':
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	126 self.Consume('struct')
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	127 self.Consume('{')
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	128 mems = []
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	129 while self.Peak != '}':
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	130 mem_t = self.parse_type_spec()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	131 for i in self.parseIdSequence():
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	132 mems.append(StructField(i.val, mem_t))
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	133 self.Consume(';')
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	134 self.Consume('}')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	135 theT = StructureType(mems)
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	136 elif self.Peak == 'enum':
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	137 # TODO)
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	138 raise NotImplementedError()
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	139 else:
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	140 theT = self.PostFixId()
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	141
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	142 # Check for pointer or array suffix:
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	143 while self.Peak in ['*', '[']:
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	144 if self.hasConsumed('*'):
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	145 theT = PointerType(theT)
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	146 elif self.hasConsumed('['):
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	147 if self.Peak == ']':
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	148 size = 0
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	149 self.Consume(']')
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	150 else:
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	151 size = self.Expression()
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	152 self.Consume(']')
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	153 theT = ArrayType(theT, size)
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	154 else:
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	155 raise Exception()
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	156 return theT
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	157
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	158 def parseTypeDef(self):
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	159 self.Consume('type')
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	160 newtype = self.parse_type_spec()
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	161 typename = self.Consume('ID')
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	162 self.Consume(';')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	163 df = DefinedType(typename.val, newtype, typename.loc)
225 1c7364bd74c7 Fixed pointer deref Windel Bouwman parents: 222 diff changeset	164 self.addDeclaration(df)
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	165
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	166 # Variable declarations:
003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	167 def parseVarDef(self):
272 e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	168 self.Consume('var')
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	169 t = self.parse_type_spec()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	170 for name in self.parseIdSequence():
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	171 v = Variable(name.val, t)
272 e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	172 v.loc = name.loc
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	173 self.addDeclaration(v)
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	174 self.Consume(';')
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	175 return Empty()
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	176
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	177 def parseConstDef(self):
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	178 self.Consume('const')
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	179 t = self.parse_type_spec()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	180 while True:
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	181 name = self.Consume('ID')
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	182 self.Consume('=')
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	183 val = self.Expression()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	184 c = Constant(name.val, t, val)
313 04cf4d26a3bc Added constant function Windel Bouwman parents: 311 diff changeset	185 self.addDeclaration(c)
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	186 c.loc = name.loc
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	187 if not self.hasConsumed(','):
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	188 break
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	189 self.Consume(';')
288 a747a45dcd78 Various styling work Windel Bouwman parents: 284 diff changeset	190
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	191 def parseFunctionDef(self):
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	192 loc = self.Consume('function').loc
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	193 returntype = self.parse_type_spec()
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	194 fname = self.Consume('ID').val
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	195 f = Function(fname, loc)
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	196 self.addDeclaration(f)
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	197 savePart = self.currentPart
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	198 self.currentPart = f
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	199 self.Consume('(')
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	200 parameters = []
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	201 if not self.hasConsumed(')'):
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	202 while True:
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	203 typ = self.parse_type_spec()
272 e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	204 name = self.Consume('ID')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	205 param = FormalParameter(name.val, typ)
272 e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	206 param.loc = name.loc
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	207 self.addDeclaration(param)
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	208 parameters.append(param)
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	209 if not self.hasConsumed(','):
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	210 break
272 e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	211 self.Consume(')')
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	212 paramtypes = [p.typ for p in parameters]
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	213 f.typ = FunctionType(paramtypes, returntype)
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	214 f.body = self.parseCompound()
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	215 self.currentPart = savePart
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	216
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	217 def parse_if(self):
272 e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	218 loc = self.Consume('if').loc
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	219 self.Consume('(')
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	220 condition = self.Expression()
e64bae57cda8 refactor ir Windel Bouwman parents: 254 diff changeset	221 self.Consume(')')
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	222 yes = self.Statement()
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	223 no = self.Statement() if self.hasConsumed('else') else Empty()
e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	224 return If(condition, yes, no, loc)
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	225
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	226 def parseWhile(self):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	227 loc = self.Consume('while').loc
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	228 self.Consume('(')
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	229 condition = self.Expression()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	230 self.Consume(')')
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	231 statements = self.Statement()
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	232 return While(condition, statements, loc)
149 74241ca312cc Fixes on parser and semantics Windel Bouwman parents: 148 diff changeset	233
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	234 def parse_for(self):
315 084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	235 loc = self.Consume('for').loc
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	236 self.Consume('(')
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	237 init = self.Statement()
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	238 self.Consume(';')
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	239 condition = self.Expression()
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	240 self.Consume(';')
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	241 final = self.Statement()
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	242 self.Consume(')')
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	243 statements = self.Statement()
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	244 return For(init, condition, final, statements, loc)
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	245
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	246 def parseReturn(self):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	247 loc = self.Consume('return').loc
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	248 if self.Peak == ';':
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	249 expr = Literal(0, loc)
280 02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	250 else:
02385f62f250 Rework from str interface to Instruction interface Windel Bouwman parents: 272 diff changeset	251 expr = self.Expression()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	252 self.Consume(';')
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	253 return Return(expr, loc)
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	254
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	255 def parseCompound(self):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	256 self.Consume('{')
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	257 statements = []
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	258 while not self.hasConsumed('}'):
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	259 statements.append(self.Statement())
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	260 return Compound(statements)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	261
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	262 def Statement(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	263 # Determine statement type based on the pending token:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	264 if self.Peak == 'if':
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	265 return self.parse_if()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	266 elif self.Peak == 'while':
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	267 return self.parseWhile()
315 084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	268 elif self.Peak == 'for':
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	269 return self.parse_for()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	270 elif self.Peak == '{':
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	271 return self.parseCompound()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	272 elif self.hasConsumed(';'):
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	273 return Empty()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	274 elif self.Peak == 'var':
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	275 return self.parseVarDef()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	276 elif self.Peak == 'return':
307 e609d5296ee9 Massive rewrite of codegenerator Windel Bouwman parents: 306 diff changeset	277 return self.parseReturn()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	278 else:
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	279 x = self.UnaryExpression()
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	280 if self.Peak == '=':
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	281 # We enter assignment mode here.
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	282 loc = self.Consume('=').loc
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	283 rhs = self.Expression()
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	284 return Assignment(x, rhs, loc)
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	285 else:
b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	286 return ExpressionStatement(x, x.loc)
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	287
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	288 # Expression section:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	289 # We not implement these C constructs:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	290 # a(2), f = 2
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	291 # and this:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	292 # a = 2 < x : 4 ? 1;
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	293
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	294 def Expression(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	295 exp = self.LogicalAndExpression()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	296 while self.Peak == 'or':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	297 loc = self.Consume('or').loc
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	298 e2 = self.LogicalAndExpression()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	299 exp = Binop(exp, 'or', e2, loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	300 return exp
148 e5263f74b287 Added c3 language frontend initial parser Windel Bouwman parents: diff changeset	301
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	302 def LogicalAndExpression(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	303 o = self.EqualityExpression()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	304 while self.Peak == 'and':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	305 loc = self.Consume('and').loc
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	306 o2 = self.EqualityExpression()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	307 o = Binop(o, 'and', o2, loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	308 return o
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	309
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	310 def EqualityExpression(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	311 ee = self.SimpleExpression()
300 158068af716c yafm Windel Bouwman parents: 296 diff changeset	312 while self.Peak in ['<', '==', '>', '>=', '<=', '!=']:
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	313 op = self.Consume(self.Peak)
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	314 ee2 = self.SimpleExpression()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	315 ee = Binop(ee, op.typ, ee2, op.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	316 return ee
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	317
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	318 def SimpleExpression(self):
232 e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	319 """ Shift operations before + and - ? """
e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	320 e = self.AddExpression()
e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	321 while self.Peak in ['>>', '<<']:
e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	322 op = self.Consume(self.Peak)
e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	323 e2 = self.AddExpression()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	324 e = Binop(e, op.typ, e2, op.loc)
232 e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	325 return e
e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	326
e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	327 def AddExpression(self):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	328 e = self.Term()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	329 while self.Peak in ['+', '-']:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	330 op = self.Consume(self.Peak)
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	331 e2 = self.Term()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	332 e = Binop(e, op.typ, e2, op.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	333 return e
213 003c8a976fff Merge of semantics and parser again .. Windel Bouwman parents: 186 diff changeset	334
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	335 def Term(self):
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	336 t = self.BitwiseOr()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	337 while self.Peak in ['*', '/']:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	338 op = self.Consume(self.Peak)
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	339 t2 = self.BitwiseOr()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	340 t = Binop(t, op.typ, t2, op.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	341 return t
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	342
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	343 def BitwiseOr(self):
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	344 a = self.BitwiseAnd()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	345 while self.Peak == '\|':
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	346 op = self.Consume(self.Peak)
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	347 b = self.BitwiseAnd()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	348 a = Binop(a, op.typ, b, op.loc)
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	349 return a
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	350
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	351 def BitwiseAnd(self):
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	352 a = self.CastExpression()
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	353 while self.Peak == '&':
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	354 op = self.Consume(self.Peak)
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	355 b = self.CastExpression()
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	356 a = Binop(a, op.typ, b, op.loc)
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	357 return a
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	358
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	359 # Domain of unary expressions:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	360
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	361 def CastExpression(self):
228 7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	362 """
7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	363 the C-style type cast conflicts with '(' expr ')'
7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	364 so introduce extra keyword 'cast'
7f18ed9b6b7e Removal of emptystatement class Windel Bouwman parents: 227 diff changeset	365 """
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	366 if self.Peak == 'cast':
230 88a1e0baef65 Added some tests for IR-code Windel Bouwman parents: 228 diff changeset	367 loc = self.Consume('cast').loc
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	368 self.Consume('<')
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	369 t = self.parse_type_spec()
221 848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	370 self.Consume('>')
848c4b15fd0b pointers Windel Bouwman parents: 220 diff changeset	371 self.Consume('(')
232 e621e3ba78d2 Added left shift instruction Windel Bouwman parents: 230 diff changeset	372 ce = self.Expression()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	373 self.Consume(')')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	374 return TypeCast(t, ce, loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	375 else:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	376 return self.UnaryExpression()
230 88a1e0baef65 Added some tests for IR-code Windel Bouwman parents: 228 diff changeset	377
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	378 def UnaryExpression(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	379 if self.Peak in ['&', '*']:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	380 op = self.Consume(self.Peak)
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	381 ce = self.CastExpression()
225 1c7364bd74c7 Fixed pointer deref Windel Bouwman parents: 222 diff changeset	382 if op.val == '*':
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	383 return Deref(ce, op.loc)
225 1c7364bd74c7 Fixed pointer deref Windel Bouwman parents: 222 diff changeset	384 else:
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	385 return Unop(op.typ, ce, op.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	386 else:
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	387 return self.PostFixExpression()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	388
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	389 def PostFixExpression(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	390 pfe = self.PrimaryExpression()
315 084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	391 while self.Peak in ['[', '.', '->', '(', '++']:
308 2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	392 if self.hasConsumed('['):
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	393 i = self.Expression()
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	394 self.Consume(']')
5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	395 pfe = Index(pfe, i, i.loc)
308 2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	396 elif self.hasConsumed('->'):
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	397 field = self.Consume('ID')
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	398 pfe = Deref(pfe, pfe.loc)
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	399 pfe = Member(pfe, field.val, field.loc)
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	400 elif self.hasConsumed('.'):
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	401 field = self.Consume('ID')
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	402 pfe = Member(pfe, field.val, field.loc)
315 084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	403 elif self.Peak == '++':
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	404 loc = self.Consume('++').loc
084cccaa5deb Added console and screen Windel Bouwman parents: 313 diff changeset	405 pfe = Unop('++', pfe, loc)
308 2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	406 elif self.hasConsumed('('):
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	407 # Function call
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	408 args = []
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	409 if not self.hasConsumed(')'):
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	410 args.append(self.Expression())
308 2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	411 while self.hasConsumed(','):
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	412 args.append(self.Expression())
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	413 self.Consume(')')
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	414 pfe = FunctionCall(pfe, args, pfe.loc)
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	415 else:
2e7f55319858 Merged analyse into codegenerator Windel Bouwman parents: 307 diff changeset	416 raise Exception()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	417 return pfe
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	418
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	419 def PrimaryExpression(self):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	420 if self.hasConsumed('('):
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	421 e = self.Expression()
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	422 self.Consume(')')
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	423 return e
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	424 elif self.Peak == 'NUMBER':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	425 val = self.Consume('NUMBER')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	426 return Literal(val.val, val.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	427 elif self.Peak == 'REAL':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	428 val = self.Consume('REAL')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	429 return Literal(val.val, val.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	430 elif self.Peak == 'true':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	431 val = self.Consume('true')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	432 return Literal(True, val.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	433 elif self.Peak == 'false':
3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	434 val = self.Consume('false')
296 9417caea2eb3 Directorized some backend files Windel Bouwman parents: 293 diff changeset	435 return Literal(False, val.loc)
311 ff665880a6b0 Added testcase for kernel and userspace Windel Bouwman parents: 308 diff changeset	436 elif self.Peak == 'STRING':
ff665880a6b0 Added testcase for kernel and userspace Windel Bouwman parents: 308 diff changeset	437 val = self.Consume('STRING')
ff665880a6b0 Added testcase for kernel and userspace Windel Bouwman parents: 308 diff changeset	438 return Literal(val.val, val.loc)
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	439 elif self.Peak == 'ID':
306 b145f8e6050b Start on c3 rewrite Windel Bouwman parents: 301 diff changeset	440 return self.parseDesignator()
220 3f6c30a5d234 Major change in expression parsing to enable pointers and structs Windel Bouwman parents: 219 diff changeset	441 self.Error('Expected NUM, ID or (expr), got {0}'.format(self.Peak))
354 5477e499b039 Added some sort of string functionality Windel Bouwman parents: 336 diff changeset	442

Mercurial > lcfOS

annotate python/ppci/c3/parser.py @ 354:5477e499b039