36 lines
638 B
Python
36 lines
638 B
Python
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from lexrules import tokens
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from nodes import *
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def p_unit(p):
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'unit : unit_items'
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p[0] = UnitNode([p[1]])
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def p_unit_items(p):
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'unit_items : unit_item unit_items'
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p[0] = Node([p[1]] + p[2].children)
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def p_unit_items_empty(p):
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'unit_items : empty'
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p[0] = p[1]
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def p_unit_item_c_stmt(p):
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'unit_item : c_expr SEMICOLON'
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p[0] = p[1]
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def p_statement(p):
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'statement : expr SEMICOLON'
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p[0] = StatementNode([p[1]])
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def p_expr(p):
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'expr : c_expr'
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p[0] = p[1]
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def p_c_expr(p):
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'c_expr : C LPAREN STRING RPAREN'
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p[0] = CExprNode(p[3])
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def p_empty(p):
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'empty :'
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p[0] = Node()
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