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Parsing support for more XPath operators.

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This still messes up some tests due to botched token precedence (by the looks
of it).
This commit is contained in:
Yorick Peterse committed 2014-06-22 21:27:53 +02:00
1 parent 514c342cab
commit 6a2f4fa82d
4 files changed
+298 -35
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lib/oga/xpath/parser.y
+23 -5
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@@ -6,12 +6,13 @@ class Oga::XPath::Parser
token T_AXIS T_COLON T_COMMA T_FLOAT T_INT T_IDENT
token T_LBRACK T_RBRACK T_LPAREN T_RPAREN T_SLASH T_STRING
token T_PIPE T_AND T_OR T_ADD T_DIV T_MOD T_EQ T_NEQ T_LT T_GT T_LTE T_GTE
token T_SUB T_MUL
options no_result_var
prechigh
left T_EQ T_AXIS
right T_OR
left T_PIPE T_MOD T_DIV T_MUL T_SUB T_ADD
left T_GT T_GTE T_LT T_LTE T_NEQ T_EQ T_AND T_OR
preclow
rule
@@ -57,15 +58,32 @@ rule
;
operator
: expression T_EQ expression { s(:eq, val[0], val[2]) }
| expression T_OR expression { s(:or, val[0], val[2]) }
: expression T_PIPE expression { s(:pipe, val[0], val[2]) }
| expression T_AND expression { s(:and, val[0], val[2]) }
| expression T_OR expression { s(:or, val[0], val[2]) }
| expression T_ADD expression { s(:add, val[0], val[2]) }
| expression T_DIV expression { s(:div, val[0], val[2]) }
| expression T_MOD expression { s(:mod, val[0], val[2]) }
| expression T_EQ expression { s(:eq, val[0], val[2]) }
| expression T_NEQ expression { s(:neq, val[0], val[2]) }
| expression T_LT expression { s(:lt, val[0], val[2]) }
| expression T_GT expression { s(:gt, val[0], val[2]) }
| expression T_LTE expression { s(:lte, val[0], val[2]) }
| expression T_GTE expression { s(:gte, val[0], val[2]) }
| expression T_MUL expression { s(:mul, val[0], val[2]) }
| expression T_SUB expression { s(:sub, val[0], val[2]) }
;
axis
: T_AXIS expression { s(:axis, val[0], val[1]) }
: T_AXIS axis_value { s(:axis, val[0], val[1]) }
| T_AXIS { s(:axis, val[0]) }
;
axis_value
: node_test
| call
;
call
: T_IDENT T_LPAREN T_RPAREN { s(:call, val[0]) }
| T_IDENT T_LPAREN call_args T_RPAREN { s(:call, val[0], *val[2]) }